1 | /* |
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2 | * tclCmdIL.c -- |
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3 | * |
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4 | * This file contains the top-level command routines for most of the Tcl |
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5 | * built-in commands whose names begin with the letters I through L. It |
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6 | * contains only commands in the generic core (i.e. those that don't |
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7 | * depend much upon UNIX facilities). |
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8 | * |
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9 | * Copyright (c) 1987-1993 The Regents of the University of California. |
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10 | * Copyright (c) 1993-1997 Lucent Technologies. |
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11 | * Copyright (c) 1994-1997 Sun Microsystems, Inc. |
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12 | * Copyright (c) 1998-1999 by Scriptics Corporation. |
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13 | * Copyright (c) 2001 by Kevin B. Kenny. All rights reserved. |
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14 | * Copyright (c) 2005 Donal K. Fellows. |
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15 | * |
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16 | * See the file "license.terms" for information on usage and redistribution of |
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17 | * this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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18 | * |
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19 | * RCS: @(#) $Id: tclCmdIL.c,v 1.137 2008/03/14 19:46:17 dgp Exp $ |
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20 | */ |
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21 | |
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22 | #include "tclInt.h" |
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23 | #include "tclRegexp.h" |
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24 | |
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25 | /* |
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26 | * During execution of the "lsort" command, structures of the following type |
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27 | * are used to arrange the objects being sorted into a collection of linked |
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28 | * lists. |
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29 | */ |
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30 | |
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31 | typedef struct SortElement { |
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32 | union { |
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33 | char *strValuePtr; |
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34 | long intValue; |
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35 | double doubleValue; |
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36 | Tcl_Obj *objValuePtr; |
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37 | } index; |
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38 | Tcl_Obj *objPtr; /* Object being sorted, or its index. */ |
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39 | struct SortElement *nextPtr;/* Next element in the list, or NULL for end |
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40 | * of list. */ |
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41 | } SortElement; |
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42 | |
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43 | /* |
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44 | * These function pointer types are used with the "lsearch" and "lsort" |
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45 | * commands to facilitate the "-nocase" option. |
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46 | */ |
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47 | |
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48 | typedef int (*SortStrCmpFn_t) (const char *, const char *); |
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49 | typedef int (*SortMemCmpFn_t) (const void *, const void *, size_t); |
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50 | |
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51 | /* |
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52 | * The "lsort" command needs to pass certain information down to the function |
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53 | * that compares two list elements, and the comparison function needs to pass |
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54 | * success or failure information back up to the top-level "lsort" command. |
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55 | * The following structure is used to pass this information. |
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56 | */ |
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57 | |
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58 | typedef struct SortInfo { |
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59 | int isIncreasing; /* Nonzero means sort in increasing order. */ |
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60 | int sortMode; /* The sort mode. One of SORTMODE_* values |
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61 | * defined below. */ |
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62 | Tcl_Obj *compareCmdPtr; /* The Tcl comparison command when sortMode is |
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63 | * SORTMODE_COMMAND. Pre-initialized to hold |
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64 | * base of command. */ |
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65 | int *indexv; /* If the -index option was specified, this |
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66 | * holds the indexes contained in the list |
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67 | * supplied as an argument to that option. |
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68 | * NULL if no indexes supplied, and points to |
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69 | * singleIndex field when only one |
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70 | * supplied. */ |
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71 | int indexc; /* Number of indexes in indexv array. */ |
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72 | int singleIndex; /* Static space for common index case. */ |
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73 | int unique; |
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74 | int numElements; |
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75 | Tcl_Interp *interp; /* The interpreter in which the sort is being |
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76 | * done. */ |
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77 | int resultCode; /* Completion code for the lsort command. If |
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78 | * an error occurs during the sort this is |
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79 | * changed from TCL_OK to TCL_ERROR. */ |
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80 | } SortInfo; |
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81 | |
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82 | /* |
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83 | * The "sortMode" field of the SortInfo structure can take on any of the |
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84 | * following values. |
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85 | */ |
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86 | |
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87 | #define SORTMODE_ASCII 0 |
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88 | #define SORTMODE_INTEGER 1 |
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89 | #define SORTMODE_REAL 2 |
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90 | #define SORTMODE_COMMAND 3 |
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91 | #define SORTMODE_DICTIONARY 4 |
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92 | #define SORTMODE_ASCII_NC 8 |
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93 | |
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94 | /* |
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95 | * Magic values for the index field of the SortInfo structure. Note that the |
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96 | * index "end-1" will be translated to SORTIDX_END-1, etc. |
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97 | */ |
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98 | |
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99 | #define SORTIDX_NONE -1 /* Not indexed; use whole value. */ |
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100 | #define SORTIDX_END -2 /* Indexed from end. */ |
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101 | |
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102 | /* |
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103 | * Forward declarations for procedures defined in this file: |
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104 | */ |
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105 | |
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106 | static int DictionaryCompare(char *left, char *right); |
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107 | static int InfoArgsCmd(ClientData dummy, Tcl_Interp *interp, |
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108 | int objc, Tcl_Obj *CONST objv[]); |
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109 | static int InfoBodyCmd(ClientData dummy, Tcl_Interp *interp, |
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110 | int objc, Tcl_Obj *CONST objv[]); |
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111 | static int InfoCmdCountCmd(ClientData dummy, Tcl_Interp *interp, |
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112 | int objc, Tcl_Obj *CONST objv[]); |
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113 | static int InfoCommandsCmd(ClientData dummy, Tcl_Interp *interp, |
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114 | int objc, Tcl_Obj *CONST objv[]); |
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115 | static int InfoCompleteCmd(ClientData dummy, Tcl_Interp *interp, |
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116 | int objc, Tcl_Obj *CONST objv[]); |
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117 | static int InfoDefaultCmd(ClientData dummy, Tcl_Interp *interp, |
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118 | int objc, Tcl_Obj *CONST objv[]); |
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119 | /* TIP #280 - New 'info' subcommand 'frame' */ |
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120 | static int InfoFrameCmd(ClientData dummy, Tcl_Interp *interp, |
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121 | int objc, Tcl_Obj *CONST objv[]); |
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122 | static int InfoFunctionsCmd(ClientData dummy, Tcl_Interp *interp, |
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123 | int objc, Tcl_Obj *CONST objv[]); |
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124 | static int InfoHostnameCmd(ClientData dummy, Tcl_Interp *interp, |
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125 | int objc, Tcl_Obj *CONST objv[]); |
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126 | static int InfoLevelCmd(ClientData dummy, Tcl_Interp *interp, |
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127 | int objc, Tcl_Obj *CONST objv[]); |
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128 | static int InfoLibraryCmd(ClientData dummy, Tcl_Interp *interp, |
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129 | int objc, Tcl_Obj *CONST objv[]); |
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130 | static int InfoLoadedCmd(ClientData dummy, Tcl_Interp *interp, |
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131 | int objc, Tcl_Obj *CONST objv[]); |
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132 | static int InfoNameOfExecutableCmd(ClientData dummy, |
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133 | Tcl_Interp *interp, int objc, |
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134 | Tcl_Obj *CONST objv[]); |
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135 | static int InfoPatchLevelCmd(ClientData dummy, Tcl_Interp *interp, |
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136 | int objc, Tcl_Obj *CONST objv[]); |
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137 | static int InfoProcsCmd(ClientData dummy, Tcl_Interp *interp, |
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138 | int objc, Tcl_Obj *CONST objv[]); |
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139 | static int InfoScriptCmd(ClientData dummy, Tcl_Interp *interp, |
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140 | int objc, Tcl_Obj *CONST objv[]); |
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141 | static int InfoSharedlibCmd(ClientData dummy, Tcl_Interp *interp, |
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142 | int objc, Tcl_Obj *CONST objv[]); |
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143 | static int InfoTclVersionCmd(ClientData dummy, Tcl_Interp *interp, |
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144 | int objc, Tcl_Obj *CONST objv[]); |
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145 | static SortElement * MergeLists(SortElement *leftPtr, SortElement *rightPtr, |
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146 | SortInfo *infoPtr); |
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147 | static int SortCompare(SortElement *firstPtr, SortElement *second, |
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148 | SortInfo *infoPtr); |
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149 | static Tcl_Obj * SelectObjFromSublist(Tcl_Obj *firstPtr, |
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150 | SortInfo *infoPtr); |
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151 | |
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152 | /* |
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153 | * Array of values describing how to implement each standard subcommand of the |
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154 | * "info" command. |
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155 | */ |
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156 | |
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157 | static const EnsembleImplMap defaultInfoMap[] = { |
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158 | {"args", InfoArgsCmd, NULL}, |
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159 | {"body", InfoBodyCmd, NULL}, |
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160 | {"cmdcount", InfoCmdCountCmd, NULL}, |
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161 | {"commands", InfoCommandsCmd, NULL}, |
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162 | {"complete", InfoCompleteCmd, NULL}, |
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163 | {"default", InfoDefaultCmd, NULL}, |
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164 | {"exists", TclInfoExistsCmd, TclCompileInfoExistsCmd}, |
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165 | {"frame", InfoFrameCmd, NULL}, |
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166 | {"functions", InfoFunctionsCmd, NULL}, |
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167 | {"globals", TclInfoGlobalsCmd, NULL}, |
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168 | {"hostname", InfoHostnameCmd, NULL}, |
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169 | {"level", InfoLevelCmd, NULL}, |
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170 | {"library", InfoLibraryCmd, NULL}, |
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171 | {"loaded", InfoLoadedCmd, NULL}, |
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172 | {"locals", TclInfoLocalsCmd, NULL}, |
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173 | {"nameofexecutable", InfoNameOfExecutableCmd, NULL}, |
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174 | {"patchlevel", InfoPatchLevelCmd, NULL}, |
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175 | {"procs", InfoProcsCmd, NULL}, |
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176 | {"script", InfoScriptCmd, NULL}, |
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177 | {"sharedlibextension", InfoSharedlibCmd, NULL}, |
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178 | {"tclversion", InfoTclVersionCmd, NULL}, |
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179 | {"vars", TclInfoVarsCmd, NULL}, |
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180 | {NULL, NULL, NULL} |
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181 | }; |
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182 | |
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183 | /* |
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184 | *---------------------------------------------------------------------- |
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185 | * |
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186 | * Tcl_IfObjCmd -- |
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187 | * |
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188 | * This procedure is invoked to process the "if" Tcl command. See the |
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189 | * user documentation for details on what it does. |
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190 | * |
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191 | * With the bytecode compiler, this procedure is only called when a |
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192 | * command name is computed at runtime, and is "if" or the name to which |
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193 | * "if" was renamed: e.g., "set z if; $z 1 {puts foo}" |
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194 | * |
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195 | * Results: |
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196 | * A standard Tcl result. |
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197 | * |
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198 | * Side effects: |
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199 | * See the user documentation. |
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200 | * |
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201 | *---------------------------------------------------------------------- |
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202 | */ |
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203 | |
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204 | int |
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205 | Tcl_IfObjCmd( |
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206 | ClientData dummy, /* Not used. */ |
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207 | Tcl_Interp *interp, /* Current interpreter. */ |
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208 | int objc, /* Number of arguments. */ |
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209 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
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210 | { |
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211 | int thenScriptIndex = 0; /* "then" script to be evaled after syntax |
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212 | * check. */ |
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213 | Interp *iPtr = (Interp *) interp; |
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214 | int i, result, value; |
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215 | char *clause; |
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216 | |
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217 | i = 1; |
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218 | while (1) { |
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219 | /* |
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220 | * At this point in the loop, objv and objc refer to an expression to |
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221 | * test, either for the main expression or an expression following an |
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222 | * "elseif". The arguments after the expression must be "then" |
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223 | * (optional) and a script to execute if the expression is true. |
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224 | */ |
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225 | |
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226 | if (i >= objc) { |
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227 | clause = TclGetString(objv[i-1]); |
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228 | Tcl_AppendResult(interp, "wrong # args: ", |
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229 | "no expression after \"", clause, "\" argument", NULL); |
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230 | return TCL_ERROR; |
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231 | } |
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232 | if (!thenScriptIndex) { |
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233 | result = Tcl_ExprBooleanObj(interp, objv[i], &value); |
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234 | if (result != TCL_OK) { |
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235 | return result; |
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236 | } |
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237 | } |
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238 | i++; |
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239 | if (i >= objc) { |
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240 | missingScript: |
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241 | clause = TclGetString(objv[i-1]); |
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242 | Tcl_AppendResult(interp, "wrong # args: ", |
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243 | "no script following \"", clause, "\" argument", NULL); |
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244 | return TCL_ERROR; |
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245 | } |
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246 | clause = TclGetString(objv[i]); |
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247 | if ((i < objc) && (strcmp(clause, "then") == 0)) { |
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248 | i++; |
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249 | } |
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250 | if (i >= objc) { |
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251 | goto missingScript; |
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252 | } |
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253 | if (value) { |
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254 | thenScriptIndex = i; |
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255 | value = 0; |
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256 | } |
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257 | |
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258 | /* |
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259 | * The expression evaluated to false. Skip the command, then see if |
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260 | * there is an "else" or "elseif" clause. |
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261 | */ |
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262 | |
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263 | i++; |
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264 | if (i >= objc) { |
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265 | if (thenScriptIndex) { |
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266 | /* |
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267 | * TIP #280. Make invoking context available to branch. |
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268 | */ |
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269 | |
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270 | return TclEvalObjEx(interp, objv[thenScriptIndex], 0, |
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271 | iPtr->cmdFramePtr, thenScriptIndex); |
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272 | } |
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273 | return TCL_OK; |
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274 | } |
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275 | clause = TclGetString(objv[i]); |
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276 | if ((clause[0] == 'e') && (strcmp(clause, "elseif") == 0)) { |
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277 | i++; |
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278 | continue; |
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279 | } |
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280 | break; |
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281 | } |
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282 | |
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283 | /* |
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284 | * Couldn't find a "then" or "elseif" clause to execute. Check now for an |
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285 | * "else" clause. We know that there's at least one more argument when we |
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286 | * get here. |
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287 | */ |
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288 | |
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289 | if (strcmp(clause, "else") == 0) { |
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290 | i++; |
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291 | if (i >= objc) { |
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292 | Tcl_AppendResult(interp, "wrong # args: ", |
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293 | "no script following \"else\" argument", NULL); |
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294 | return TCL_ERROR; |
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295 | } |
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296 | } |
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297 | if (i < objc - 1) { |
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298 | Tcl_AppendResult(interp, "wrong # args: ", |
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299 | "extra words after \"else\" clause in \"if\" command", NULL); |
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300 | return TCL_ERROR; |
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301 | } |
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302 | if (thenScriptIndex) { |
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303 | /* |
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304 | * TIP #280. Make invoking context available to branch/else. |
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305 | */ |
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306 | |
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307 | return TclEvalObjEx(interp, objv[thenScriptIndex], 0, |
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308 | iPtr->cmdFramePtr, thenScriptIndex); |
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309 | } |
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310 | return TclEvalObjEx(interp, objv[i], 0, iPtr->cmdFramePtr, i); |
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311 | } |
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312 | |
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313 | /* |
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314 | *---------------------------------------------------------------------- |
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315 | * |
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316 | * Tcl_IncrObjCmd -- |
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317 | * |
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318 | * This procedure is invoked to process the "incr" Tcl command. See the |
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319 | * user documentation for details on what it does. |
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320 | * |
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321 | * With the bytecode compiler, this procedure is only called when a |
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322 | * command name is computed at runtime, and is "incr" or the name to |
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323 | * which "incr" was renamed: e.g., "set z incr; $z i -1" |
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324 | * |
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325 | * Results: |
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326 | * A standard Tcl result. |
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327 | * |
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328 | * Side effects: |
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329 | * See the user documentation. |
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330 | * |
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331 | *---------------------------------------------------------------------- |
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332 | */ |
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333 | |
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334 | int |
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335 | Tcl_IncrObjCmd( |
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336 | ClientData dummy, /* Not used. */ |
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337 | Tcl_Interp *interp, /* Current interpreter. */ |
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338 | int objc, /* Number of arguments. */ |
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339 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
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340 | { |
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341 | Tcl_Obj *newValuePtr, *incrPtr; |
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342 | |
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343 | if ((objc != 2) && (objc != 3)) { |
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344 | Tcl_WrongNumArgs(interp, 1, objv, "varName ?increment?"); |
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345 | return TCL_ERROR; |
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346 | } |
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347 | |
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348 | if (objc == 3) { |
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349 | incrPtr = objv[2]; |
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350 | } else { |
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351 | incrPtr = Tcl_NewIntObj(1); |
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352 | } |
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353 | Tcl_IncrRefCount(incrPtr); |
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354 | newValuePtr = TclIncrObjVar2(interp, objv[1], NULL, |
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355 | incrPtr, TCL_LEAVE_ERR_MSG); |
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356 | Tcl_DecrRefCount(incrPtr); |
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357 | |
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358 | if (newValuePtr == NULL) { |
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359 | return TCL_ERROR; |
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360 | } |
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361 | |
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362 | /* |
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363 | * Set the interpreter's object result to refer to the variable's new |
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364 | * value object. |
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365 | */ |
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366 | |
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367 | Tcl_SetObjResult(interp, newValuePtr); |
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368 | return TCL_OK; |
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369 | } |
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370 | |
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371 | /* |
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372 | *---------------------------------------------------------------------- |
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373 | * |
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374 | * TclInitInfoCmd -- |
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375 | * |
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376 | * This function is called to create the "info" Tcl command. See the user |
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377 | * documentation for details on what it does. |
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378 | * |
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379 | * Results: |
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380 | * FIXME |
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381 | * |
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382 | * Side effects: |
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383 | * none |
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384 | * |
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385 | *---------------------------------------------------------------------- |
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386 | */ |
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387 | |
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388 | Tcl_Command |
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389 | TclInitInfoCmd( |
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390 | Tcl_Interp *interp) /* Current interpreter. */ |
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391 | { |
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392 | return TclMakeEnsemble(interp, "info", defaultInfoMap); |
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393 | } |
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394 | |
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395 | /* |
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396 | *---------------------------------------------------------------------- |
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397 | * |
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398 | * InfoArgsCmd -- |
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399 | * |
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400 | * Called to implement the "info args" command that returns the argument |
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401 | * list for a procedure. Handles the following syntax: |
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402 | * |
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403 | * info args procName |
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404 | * |
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405 | * Results: |
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406 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
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407 | * |
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408 | * Side effects: |
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409 | * Returns a result in the interpreter's result object. If there is an |
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410 | * error, the result is an error message. |
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411 | * |
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412 | *---------------------------------------------------------------------- |
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413 | */ |
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414 | |
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415 | static int |
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416 | InfoArgsCmd( |
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417 | ClientData dummy, /* Not used. */ |
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418 | Tcl_Interp *interp, /* Current interpreter. */ |
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419 | int objc, /* Number of arguments. */ |
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420 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
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421 | { |
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422 | register Interp *iPtr = (Interp *) interp; |
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423 | char *name; |
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424 | Proc *procPtr; |
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425 | CompiledLocal *localPtr; |
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426 | Tcl_Obj *listObjPtr; |
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427 | |
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428 | if (objc != 2) { |
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429 | Tcl_WrongNumArgs(interp, 1, objv, "procname"); |
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430 | return TCL_ERROR; |
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431 | } |
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432 | |
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433 | name = TclGetString(objv[1]); |
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434 | procPtr = TclFindProc(iPtr, name); |
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435 | if (procPtr == NULL) { |
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436 | Tcl_AppendResult(interp, "\"", name, "\" isn't a procedure", NULL); |
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437 | return TCL_ERROR; |
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438 | } |
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439 | |
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440 | /* |
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441 | * Build a return list containing the arguments. |
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442 | */ |
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443 | |
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444 | listObjPtr = Tcl_NewListObj(0, NULL); |
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445 | for (localPtr = procPtr->firstLocalPtr; localPtr != NULL; |
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446 | localPtr = localPtr->nextPtr) { |
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447 | if (TclIsVarArgument(localPtr)) { |
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448 | Tcl_ListObjAppendElement(interp, listObjPtr, |
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449 | Tcl_NewStringObj(localPtr->name, -1)); |
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450 | } |
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451 | } |
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452 | Tcl_SetObjResult(interp, listObjPtr); |
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453 | return TCL_OK; |
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454 | } |
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455 | |
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456 | /* |
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457 | *---------------------------------------------------------------------- |
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458 | * |
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459 | * InfoBodyCmd -- |
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460 | * |
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461 | * Called to implement the "info body" command that returns the body for |
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462 | * a procedure. Handles the following syntax: |
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463 | * |
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464 | * info body procName |
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465 | * |
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466 | * Results: |
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467 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
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468 | * |
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469 | * Side effects: |
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470 | * Returns a result in the interpreter's result object. If there is an |
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471 | * error, the result is an error message. |
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472 | * |
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473 | *---------------------------------------------------------------------- |
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474 | */ |
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475 | |
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476 | static int |
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477 | InfoBodyCmd( |
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478 | ClientData dummy, /* Not used. */ |
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479 | Tcl_Interp *interp, /* Current interpreter. */ |
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480 | int objc, /* Number of arguments. */ |
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481 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
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482 | { |
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483 | register Interp *iPtr = (Interp *) interp; |
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484 | char *name; |
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485 | Proc *procPtr; |
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486 | Tcl_Obj *bodyPtr, *resultPtr; |
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487 | |
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488 | if (objc != 2) { |
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489 | Tcl_WrongNumArgs(interp, 1, objv, "procname"); |
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490 | return TCL_ERROR; |
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491 | } |
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492 | |
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493 | name = TclGetString(objv[1]); |
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494 | procPtr = TclFindProc(iPtr, name); |
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495 | if (procPtr == NULL) { |
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496 | Tcl_AppendResult(interp, "\"", name, "\" isn't a procedure", NULL); |
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497 | return TCL_ERROR; |
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498 | } |
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499 | |
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500 | /* |
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501 | * Here we used to return procPtr->bodyPtr, except when the body was |
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502 | * bytecompiled - in that case, the return was a copy of the body's string |
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503 | * rep. In order to better isolate the implementation details of the |
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504 | * compiler/engine subsystem, we now always return a copy of the string |
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505 | * rep. It is important to return a copy so that later manipulations of |
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506 | * the object do not invalidate the internal rep. |
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507 | */ |
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508 | |
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509 | bodyPtr = procPtr->bodyPtr; |
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510 | if (bodyPtr->bytes == NULL) { |
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511 | /* |
---|
512 | * The string rep might not be valid if the procedure has never been |
---|
513 | * run before. [Bug #545644] |
---|
514 | */ |
---|
515 | |
---|
516 | (void) TclGetString(bodyPtr); |
---|
517 | } |
---|
518 | resultPtr = Tcl_NewStringObj(bodyPtr->bytes, bodyPtr->length); |
---|
519 | |
---|
520 | Tcl_SetObjResult(interp, resultPtr); |
---|
521 | return TCL_OK; |
---|
522 | } |
---|
523 | |
---|
524 | /* |
---|
525 | *---------------------------------------------------------------------- |
---|
526 | * |
---|
527 | * InfoCmdCountCmd -- |
---|
528 | * |
---|
529 | * Called to implement the "info cmdcount" command that returns the |
---|
530 | * number of commands that have been executed. Handles the following |
---|
531 | * syntax: |
---|
532 | * |
---|
533 | * info cmdcount |
---|
534 | * |
---|
535 | * Results: |
---|
536 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
537 | * |
---|
538 | * Side effects: |
---|
539 | * Returns a result in the interpreter's result object. If there is an |
---|
540 | * error, the result is an error message. |
---|
541 | * |
---|
542 | *---------------------------------------------------------------------- |
---|
543 | */ |
---|
544 | |
---|
545 | static int |
---|
546 | InfoCmdCountCmd( |
---|
547 | ClientData dummy, /* Not used. */ |
---|
548 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
549 | int objc, /* Number of arguments. */ |
---|
550 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
551 | { |
---|
552 | Interp *iPtr = (Interp *) interp; |
---|
553 | |
---|
554 | if (objc != 1) { |
---|
555 | Tcl_WrongNumArgs(interp, 1, objv, NULL); |
---|
556 | return TCL_ERROR; |
---|
557 | } |
---|
558 | |
---|
559 | Tcl_SetObjResult(interp, Tcl_NewIntObj(iPtr->cmdCount)); |
---|
560 | return TCL_OK; |
---|
561 | } |
---|
562 | |
---|
563 | /* |
---|
564 | *---------------------------------------------------------------------- |
---|
565 | * |
---|
566 | * InfoCommandsCmd -- |
---|
567 | * |
---|
568 | * Called to implement the "info commands" command that returns the list |
---|
569 | * of commands in the interpreter that match an optional pattern. The |
---|
570 | * pattern, if any, consists of an optional sequence of namespace names |
---|
571 | * separated by "::" qualifiers, which is followed by a glob-style |
---|
572 | * pattern that restricts which commands are returned. Handles the |
---|
573 | * following syntax: |
---|
574 | * |
---|
575 | * info commands ?pattern? |
---|
576 | * |
---|
577 | * Results: |
---|
578 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
579 | * |
---|
580 | * Side effects: |
---|
581 | * Returns a result in the interpreter's result object. If there is an |
---|
582 | * error, the result is an error message. |
---|
583 | * |
---|
584 | *---------------------------------------------------------------------- |
---|
585 | */ |
---|
586 | |
---|
587 | static int |
---|
588 | InfoCommandsCmd( |
---|
589 | ClientData dummy, /* Not used. */ |
---|
590 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
591 | int objc, /* Number of arguments. */ |
---|
592 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
593 | { |
---|
594 | char *cmdName, *pattern; |
---|
595 | CONST char *simplePattern; |
---|
596 | register Tcl_HashEntry *entryPtr; |
---|
597 | Tcl_HashSearch search; |
---|
598 | Namespace *nsPtr; |
---|
599 | Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp); |
---|
600 | Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp); |
---|
601 | Tcl_Obj *listPtr, *elemObjPtr; |
---|
602 | int specificNsInPattern = 0;/* Init. to avoid compiler warning. */ |
---|
603 | Tcl_Command cmd; |
---|
604 | int i; |
---|
605 | |
---|
606 | /* |
---|
607 | * Get the pattern and find the "effective namespace" in which to list |
---|
608 | * commands. |
---|
609 | */ |
---|
610 | |
---|
611 | if (objc == 1) { |
---|
612 | simplePattern = NULL; |
---|
613 | nsPtr = currNsPtr; |
---|
614 | specificNsInPattern = 0; |
---|
615 | } else if (objc == 2) { |
---|
616 | /* |
---|
617 | * From the pattern, get the effective namespace and the simple |
---|
618 | * pattern (no namespace qualifiers or ::'s) at the end. If an error |
---|
619 | * was found while parsing the pattern, return it. Otherwise, if the |
---|
620 | * namespace wasn't found, just leave nsPtr NULL: we will return an |
---|
621 | * empty list since no commands there can be found. |
---|
622 | */ |
---|
623 | |
---|
624 | Namespace *dummy1NsPtr, *dummy2NsPtr; |
---|
625 | |
---|
626 | pattern = TclGetString(objv[1]); |
---|
627 | TclGetNamespaceForQualName(interp, pattern, (Namespace *) NULL, 0, |
---|
628 | &nsPtr, &dummy1NsPtr, &dummy2NsPtr, &simplePattern); |
---|
629 | |
---|
630 | if (nsPtr != NULL) { /* We successfully found the pattern's ns. */ |
---|
631 | specificNsInPattern = (strcmp(simplePattern, pattern) != 0); |
---|
632 | } |
---|
633 | } else { |
---|
634 | Tcl_WrongNumArgs(interp, 1, objv, "?pattern?"); |
---|
635 | return TCL_ERROR; |
---|
636 | } |
---|
637 | |
---|
638 | /* |
---|
639 | * Exit as quickly as possible if we couldn't find the namespace. |
---|
640 | */ |
---|
641 | |
---|
642 | if (nsPtr == NULL) { |
---|
643 | return TCL_OK; |
---|
644 | } |
---|
645 | |
---|
646 | /* |
---|
647 | * Scan through the effective namespace's command table and create a list |
---|
648 | * with all commands that match the pattern. If a specific namespace was |
---|
649 | * requested in the pattern, qualify the command names with the namespace |
---|
650 | * name. |
---|
651 | */ |
---|
652 | |
---|
653 | listPtr = Tcl_NewListObj(0, NULL); |
---|
654 | |
---|
655 | if (simplePattern != NULL && TclMatchIsTrivial(simplePattern)) { |
---|
656 | /* |
---|
657 | * Special case for when the pattern doesn't include any of glob's |
---|
658 | * special characters. This lets us avoid scans of any hash tables. |
---|
659 | */ |
---|
660 | |
---|
661 | entryPtr = Tcl_FindHashEntry(&nsPtr->cmdTable, simplePattern); |
---|
662 | if (entryPtr != NULL) { |
---|
663 | if (specificNsInPattern) { |
---|
664 | cmd = (Tcl_Command) Tcl_GetHashValue(entryPtr); |
---|
665 | elemObjPtr = Tcl_NewObj(); |
---|
666 | Tcl_GetCommandFullName(interp, cmd, elemObjPtr); |
---|
667 | } else { |
---|
668 | cmdName = Tcl_GetHashKey(&nsPtr->cmdTable, entryPtr); |
---|
669 | elemObjPtr = Tcl_NewStringObj(cmdName, -1); |
---|
670 | } |
---|
671 | Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr); |
---|
672 | Tcl_SetObjResult(interp, listPtr); |
---|
673 | return TCL_OK; |
---|
674 | } |
---|
675 | if ((nsPtr != globalNsPtr) && !specificNsInPattern) { |
---|
676 | Tcl_HashTable *tablePtr = NULL; /* Quell warning. */ |
---|
677 | |
---|
678 | for (i=0 ; i<nsPtr->commandPathLength ; i++) { |
---|
679 | Namespace *pathNsPtr = nsPtr->commandPathArray[i].nsPtr; |
---|
680 | |
---|
681 | if (pathNsPtr == NULL) { |
---|
682 | continue; |
---|
683 | } |
---|
684 | tablePtr = &pathNsPtr->cmdTable; |
---|
685 | entryPtr = Tcl_FindHashEntry(tablePtr, simplePattern); |
---|
686 | if (entryPtr != NULL) { |
---|
687 | break; |
---|
688 | } |
---|
689 | } |
---|
690 | if (entryPtr == NULL) { |
---|
691 | tablePtr = &globalNsPtr->cmdTable; |
---|
692 | entryPtr = Tcl_FindHashEntry(tablePtr, simplePattern); |
---|
693 | } |
---|
694 | if (entryPtr != NULL) { |
---|
695 | cmdName = Tcl_GetHashKey(tablePtr, entryPtr); |
---|
696 | Tcl_ListObjAppendElement(interp, listPtr, |
---|
697 | Tcl_NewStringObj(cmdName, -1)); |
---|
698 | Tcl_SetObjResult(interp, listPtr); |
---|
699 | return TCL_OK; |
---|
700 | } |
---|
701 | } |
---|
702 | } else if (nsPtr->commandPathLength == 0 || specificNsInPattern) { |
---|
703 | /* |
---|
704 | * The pattern is non-trivial, but either there is no explicit path or |
---|
705 | * there is an explicit namespace in the pattern. In both cases, the |
---|
706 | * old matching scheme is perfect. |
---|
707 | */ |
---|
708 | |
---|
709 | entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search); |
---|
710 | while (entryPtr != NULL) { |
---|
711 | cmdName = Tcl_GetHashKey(&nsPtr->cmdTable, entryPtr); |
---|
712 | if ((simplePattern == NULL) |
---|
713 | || Tcl_StringMatch(cmdName, simplePattern)) { |
---|
714 | if (specificNsInPattern) { |
---|
715 | cmd = (Tcl_Command) Tcl_GetHashValue(entryPtr); |
---|
716 | elemObjPtr = Tcl_NewObj(); |
---|
717 | Tcl_GetCommandFullName(interp, cmd, elemObjPtr); |
---|
718 | } else { |
---|
719 | elemObjPtr = Tcl_NewStringObj(cmdName, -1); |
---|
720 | } |
---|
721 | Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr); |
---|
722 | } |
---|
723 | entryPtr = Tcl_NextHashEntry(&search); |
---|
724 | } |
---|
725 | |
---|
726 | /* |
---|
727 | * If the effective namespace isn't the global :: namespace, and a |
---|
728 | * specific namespace wasn't requested in the pattern, then add in all |
---|
729 | * global :: commands that match the simple pattern. Of course, we add |
---|
730 | * in only those commands that aren't hidden by a command in the |
---|
731 | * effective namespace. |
---|
732 | */ |
---|
733 | |
---|
734 | if ((nsPtr != globalNsPtr) && !specificNsInPattern) { |
---|
735 | entryPtr = Tcl_FirstHashEntry(&globalNsPtr->cmdTable, &search); |
---|
736 | while (entryPtr != NULL) { |
---|
737 | cmdName = Tcl_GetHashKey(&globalNsPtr->cmdTable, entryPtr); |
---|
738 | if ((simplePattern == NULL) |
---|
739 | || Tcl_StringMatch(cmdName, simplePattern)) { |
---|
740 | if (Tcl_FindHashEntry(&nsPtr->cmdTable,cmdName) == NULL) { |
---|
741 | Tcl_ListObjAppendElement(interp, listPtr, |
---|
742 | Tcl_NewStringObj(cmdName, -1)); |
---|
743 | } |
---|
744 | } |
---|
745 | entryPtr = Tcl_NextHashEntry(&search); |
---|
746 | } |
---|
747 | } |
---|
748 | } else { |
---|
749 | /* |
---|
750 | * The pattern is non-trivial (can match more than one command name), |
---|
751 | * there is an explicit path, and there is no explicit namespace in |
---|
752 | * the pattern. This means that we have to traverse the path to |
---|
753 | * discover all the commands defined. |
---|
754 | */ |
---|
755 | |
---|
756 | Tcl_HashTable addedCommandsTable; |
---|
757 | int isNew; |
---|
758 | int foundGlobal = (nsPtr == globalNsPtr); |
---|
759 | |
---|
760 | /* |
---|
761 | * We keep a hash of the objects already added to the result list. |
---|
762 | */ |
---|
763 | |
---|
764 | Tcl_InitObjHashTable(&addedCommandsTable); |
---|
765 | |
---|
766 | entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search); |
---|
767 | while (entryPtr != NULL) { |
---|
768 | cmdName = Tcl_GetHashKey(&nsPtr->cmdTable, entryPtr); |
---|
769 | if ((simplePattern == NULL) |
---|
770 | || Tcl_StringMatch(cmdName, simplePattern)) { |
---|
771 | elemObjPtr = Tcl_NewStringObj(cmdName, -1); |
---|
772 | Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr); |
---|
773 | (void) Tcl_CreateHashEntry(&addedCommandsTable, |
---|
774 | (char *)elemObjPtr, &isNew); |
---|
775 | } |
---|
776 | entryPtr = Tcl_NextHashEntry(&search); |
---|
777 | } |
---|
778 | |
---|
779 | /* |
---|
780 | * Search the path next. |
---|
781 | */ |
---|
782 | |
---|
783 | for (i=0 ; i<nsPtr->commandPathLength ; i++) { |
---|
784 | Namespace *pathNsPtr = nsPtr->commandPathArray[i].nsPtr; |
---|
785 | |
---|
786 | if (pathNsPtr == NULL) { |
---|
787 | continue; |
---|
788 | } |
---|
789 | if (pathNsPtr == globalNsPtr) { |
---|
790 | foundGlobal = 1; |
---|
791 | } |
---|
792 | entryPtr = Tcl_FirstHashEntry(&pathNsPtr->cmdTable, &search); |
---|
793 | while (entryPtr != NULL) { |
---|
794 | cmdName = Tcl_GetHashKey(&pathNsPtr->cmdTable, entryPtr); |
---|
795 | if ((simplePattern == NULL) |
---|
796 | || Tcl_StringMatch(cmdName, simplePattern)) { |
---|
797 | elemObjPtr = Tcl_NewStringObj(cmdName, -1); |
---|
798 | (void) Tcl_CreateHashEntry(&addedCommandsTable, |
---|
799 | (char *) elemObjPtr, &isNew); |
---|
800 | if (isNew) { |
---|
801 | Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr); |
---|
802 | } else { |
---|
803 | TclDecrRefCount(elemObjPtr); |
---|
804 | } |
---|
805 | } |
---|
806 | entryPtr = Tcl_NextHashEntry(&search); |
---|
807 | } |
---|
808 | } |
---|
809 | |
---|
810 | /* |
---|
811 | * If the effective namespace isn't the global :: namespace, and a |
---|
812 | * specific namespace wasn't requested in the pattern, then add in all |
---|
813 | * global :: commands that match the simple pattern. Of course, we add |
---|
814 | * in only those commands that aren't hidden by a command in the |
---|
815 | * effective namespace. |
---|
816 | */ |
---|
817 | |
---|
818 | if (!foundGlobal) { |
---|
819 | entryPtr = Tcl_FirstHashEntry(&globalNsPtr->cmdTable, &search); |
---|
820 | while (entryPtr != NULL) { |
---|
821 | cmdName = Tcl_GetHashKey(&globalNsPtr->cmdTable, entryPtr); |
---|
822 | if ((simplePattern == NULL) |
---|
823 | || Tcl_StringMatch(cmdName, simplePattern)) { |
---|
824 | elemObjPtr = Tcl_NewStringObj(cmdName, -1); |
---|
825 | if (Tcl_FindHashEntry(&addedCommandsTable, |
---|
826 | (char *) elemObjPtr) == NULL) { |
---|
827 | Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr); |
---|
828 | } else { |
---|
829 | TclDecrRefCount(elemObjPtr); |
---|
830 | } |
---|
831 | } |
---|
832 | entryPtr = Tcl_NextHashEntry(&search); |
---|
833 | } |
---|
834 | } |
---|
835 | |
---|
836 | Tcl_DeleteHashTable(&addedCommandsTable); |
---|
837 | } |
---|
838 | |
---|
839 | Tcl_SetObjResult(interp, listPtr); |
---|
840 | return TCL_OK; |
---|
841 | } |
---|
842 | |
---|
843 | /* |
---|
844 | *---------------------------------------------------------------------- |
---|
845 | * |
---|
846 | * InfoCompleteCmd -- |
---|
847 | * |
---|
848 | * Called to implement the "info complete" command that determines |
---|
849 | * whether a string is a complete Tcl command. Handles the following |
---|
850 | * syntax: |
---|
851 | * |
---|
852 | * info complete command |
---|
853 | * |
---|
854 | * Results: |
---|
855 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
856 | * |
---|
857 | * Side effects: |
---|
858 | * Returns a result in the interpreter's result object. If there is an |
---|
859 | * error, the result is an error message. |
---|
860 | * |
---|
861 | *---------------------------------------------------------------------- |
---|
862 | */ |
---|
863 | |
---|
864 | static int |
---|
865 | InfoCompleteCmd( |
---|
866 | ClientData dummy, /* Not used. */ |
---|
867 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
868 | int objc, /* Number of arguments. */ |
---|
869 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
870 | { |
---|
871 | if (objc != 2) { |
---|
872 | Tcl_WrongNumArgs(interp, 1, objv, "command"); |
---|
873 | return TCL_ERROR; |
---|
874 | } |
---|
875 | |
---|
876 | Tcl_SetObjResult(interp, Tcl_NewBooleanObj( |
---|
877 | TclObjCommandComplete(objv[1]))); |
---|
878 | return TCL_OK; |
---|
879 | } |
---|
880 | |
---|
881 | /* |
---|
882 | *---------------------------------------------------------------------- |
---|
883 | * |
---|
884 | * InfoDefaultCmd -- |
---|
885 | * |
---|
886 | * Called to implement the "info default" command that returns the |
---|
887 | * default value for a procedure argument. Handles the following syntax: |
---|
888 | * |
---|
889 | * info default procName arg varName |
---|
890 | * |
---|
891 | * Results: |
---|
892 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
893 | * |
---|
894 | * Side effects: |
---|
895 | * Returns a result in the interpreter's result object. If there is an |
---|
896 | * error, the result is an error message. |
---|
897 | * |
---|
898 | *---------------------------------------------------------------------- |
---|
899 | */ |
---|
900 | |
---|
901 | static int |
---|
902 | InfoDefaultCmd( |
---|
903 | ClientData dummy, /* Not used. */ |
---|
904 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
905 | int objc, /* Number of arguments. */ |
---|
906 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
907 | { |
---|
908 | Interp *iPtr = (Interp *) interp; |
---|
909 | char *procName, *argName, *varName; |
---|
910 | Proc *procPtr; |
---|
911 | CompiledLocal *localPtr; |
---|
912 | Tcl_Obj *valueObjPtr; |
---|
913 | |
---|
914 | if (objc != 4) { |
---|
915 | Tcl_WrongNumArgs(interp, 1, objv, "procname arg varname"); |
---|
916 | return TCL_ERROR; |
---|
917 | } |
---|
918 | |
---|
919 | procName = TclGetString(objv[1]); |
---|
920 | argName = TclGetString(objv[2]); |
---|
921 | |
---|
922 | procPtr = TclFindProc(iPtr, procName); |
---|
923 | if (procPtr == NULL) { |
---|
924 | Tcl_AppendResult(interp, "\"", procName, "\" isn't a procedure",NULL); |
---|
925 | return TCL_ERROR; |
---|
926 | } |
---|
927 | |
---|
928 | for (localPtr = procPtr->firstLocalPtr; localPtr != NULL; |
---|
929 | localPtr = localPtr->nextPtr) { |
---|
930 | if (TclIsVarArgument(localPtr) |
---|
931 | && (strcmp(argName, localPtr->name) == 0)) { |
---|
932 | if (localPtr->defValuePtr != NULL) { |
---|
933 | valueObjPtr = Tcl_ObjSetVar2(interp, objv[3], NULL, |
---|
934 | localPtr->defValuePtr, 0); |
---|
935 | if (valueObjPtr == NULL) { |
---|
936 | goto defStoreError; |
---|
937 | } |
---|
938 | Tcl_SetObjResult(interp, Tcl_NewIntObj(1)); |
---|
939 | } else { |
---|
940 | Tcl_Obj *nullObjPtr = Tcl_NewObj(); |
---|
941 | valueObjPtr = Tcl_ObjSetVar2(interp, objv[3], NULL, |
---|
942 | nullObjPtr, 0); |
---|
943 | if (valueObjPtr == NULL) { |
---|
944 | goto defStoreError; |
---|
945 | } |
---|
946 | Tcl_SetObjResult(interp, Tcl_NewIntObj(0)); |
---|
947 | } |
---|
948 | return TCL_OK; |
---|
949 | } |
---|
950 | } |
---|
951 | |
---|
952 | Tcl_AppendResult(interp, "procedure \"", procName, |
---|
953 | "\" doesn't have an argument \"", argName, "\"", NULL); |
---|
954 | return TCL_ERROR; |
---|
955 | |
---|
956 | defStoreError: |
---|
957 | varName = TclGetString(objv[3]); |
---|
958 | Tcl_AppendResult(interp, "couldn't store default value in variable \"", |
---|
959 | varName, "\"", NULL); |
---|
960 | return TCL_ERROR; |
---|
961 | } |
---|
962 | |
---|
963 | /* |
---|
964 | *---------------------------------------------------------------------- |
---|
965 | * |
---|
966 | * TclInfoExistsCmd -- |
---|
967 | * |
---|
968 | * Called to implement the "info exists" command that determines whether |
---|
969 | * a variable exists. Handles the following syntax: |
---|
970 | * |
---|
971 | * info exists varName |
---|
972 | * |
---|
973 | * Results: |
---|
974 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
975 | * |
---|
976 | * Side effects: |
---|
977 | * Returns a result in the interpreter's result object. If there is an |
---|
978 | * error, the result is an error message. |
---|
979 | * |
---|
980 | *---------------------------------------------------------------------- |
---|
981 | */ |
---|
982 | |
---|
983 | int |
---|
984 | TclInfoExistsCmd( |
---|
985 | ClientData dummy, /* Not used. */ |
---|
986 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
987 | int objc, /* Number of arguments. */ |
---|
988 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
989 | { |
---|
990 | char *varName; |
---|
991 | Var *varPtr; |
---|
992 | |
---|
993 | if (objc != 2) { |
---|
994 | Tcl_WrongNumArgs(interp, 1, objv, "varName"); |
---|
995 | return TCL_ERROR; |
---|
996 | } |
---|
997 | |
---|
998 | varName = TclGetString(objv[1]); |
---|
999 | varPtr = TclVarTraceExists(interp, varName); |
---|
1000 | |
---|
1001 | Tcl_SetObjResult(interp, |
---|
1002 | Tcl_NewBooleanObj(varPtr && varPtr->value.objPtr)); |
---|
1003 | return TCL_OK; |
---|
1004 | } |
---|
1005 | |
---|
1006 | /* |
---|
1007 | *---------------------------------------------------------------------- |
---|
1008 | * |
---|
1009 | * InfoFrameCmd -- |
---|
1010 | * TIP #280 |
---|
1011 | * |
---|
1012 | * Called to implement the "info frame" command that returns the location |
---|
1013 | * of either the currently executing command, or its caller. Handles the |
---|
1014 | * following syntax: |
---|
1015 | * |
---|
1016 | * info frame ?number? |
---|
1017 | * |
---|
1018 | * Results: |
---|
1019 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1020 | * |
---|
1021 | * Side effects: |
---|
1022 | * Returns a result in the interpreter's result object. If there is an |
---|
1023 | * error, the result is an error message. |
---|
1024 | * |
---|
1025 | *---------------------------------------------------------------------- |
---|
1026 | */ |
---|
1027 | |
---|
1028 | static int |
---|
1029 | InfoFrameCmd( |
---|
1030 | ClientData dummy, /* Not used. */ |
---|
1031 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1032 | int objc, /* Number of arguments. */ |
---|
1033 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1034 | { |
---|
1035 | Interp *iPtr = (Interp *) interp; |
---|
1036 | int level; |
---|
1037 | CmdFrame *framePtr; |
---|
1038 | |
---|
1039 | if (objc == 1) { |
---|
1040 | /* |
---|
1041 | * Just "info frame". |
---|
1042 | */ |
---|
1043 | |
---|
1044 | int levels = |
---|
1045 | (iPtr->cmdFramePtr == NULL ? 0 : iPtr->cmdFramePtr->level); |
---|
1046 | |
---|
1047 | Tcl_SetIntObj(Tcl_GetObjResult(interp), levels); |
---|
1048 | return TCL_OK; |
---|
1049 | } else if (objc != 2) { |
---|
1050 | Tcl_WrongNumArgs(interp, 1, objv, "?number?"); |
---|
1051 | return TCL_ERROR; |
---|
1052 | } |
---|
1053 | |
---|
1054 | /* |
---|
1055 | * We've got "info frame level" and must parse the level first. |
---|
1056 | */ |
---|
1057 | |
---|
1058 | if (TclGetIntFromObj(interp, objv[1], &level) != TCL_OK) { |
---|
1059 | return TCL_ERROR; |
---|
1060 | } |
---|
1061 | if (level <= 0) { |
---|
1062 | /* |
---|
1063 | * Negative levels are adressing relative to the current frame's |
---|
1064 | * depth. |
---|
1065 | */ |
---|
1066 | |
---|
1067 | if (iPtr->cmdFramePtr == NULL) { |
---|
1068 | levelError: |
---|
1069 | Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "bad level \"", |
---|
1070 | TclGetString(objv[1]), "\"", NULL); |
---|
1071 | return TCL_ERROR; |
---|
1072 | } |
---|
1073 | |
---|
1074 | /* |
---|
1075 | * Convert to absolute. |
---|
1076 | */ |
---|
1077 | |
---|
1078 | level += iPtr->cmdFramePtr->level; |
---|
1079 | } |
---|
1080 | |
---|
1081 | for (framePtr = iPtr->cmdFramePtr; framePtr != NULL; |
---|
1082 | framePtr = framePtr->nextPtr) { |
---|
1083 | if (framePtr->level == level) { |
---|
1084 | break; |
---|
1085 | } |
---|
1086 | } |
---|
1087 | if (framePtr == NULL) { |
---|
1088 | goto levelError; |
---|
1089 | } |
---|
1090 | |
---|
1091 | Tcl_SetObjResult(interp, TclInfoFrame(interp, framePtr)); |
---|
1092 | return TCL_OK; |
---|
1093 | } |
---|
1094 | |
---|
1095 | /* |
---|
1096 | *---------------------------------------------------------------------- |
---|
1097 | * |
---|
1098 | * TclInfoFrame -- |
---|
1099 | * |
---|
1100 | * Core of InfoFrameCmd, returns TIP280 dict for a given frame. |
---|
1101 | * |
---|
1102 | * Results: |
---|
1103 | * Returns TIP280 dict. |
---|
1104 | * |
---|
1105 | * Side effects: |
---|
1106 | * None. |
---|
1107 | * |
---|
1108 | *---------------------------------------------------------------------- |
---|
1109 | */ |
---|
1110 | |
---|
1111 | Tcl_Obj * |
---|
1112 | TclInfoFrame( |
---|
1113 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1114 | CmdFrame *framePtr) /* Frame to get info for. */ |
---|
1115 | { |
---|
1116 | Interp *iPtr = (Interp *) interp; |
---|
1117 | Tcl_Obj *lv[20]; /* Keep uptodate when more keys are added to |
---|
1118 | * the dict. */ |
---|
1119 | int lc = 0; |
---|
1120 | /* |
---|
1121 | * This array is indexed by the TCL_LOCATION_... values, except |
---|
1122 | * for _LAST. |
---|
1123 | */ |
---|
1124 | static CONST char *typeString[TCL_LOCATION_LAST] = { |
---|
1125 | "eval", "eval", "eval", "precompiled", "source", "proc" |
---|
1126 | }; |
---|
1127 | Tcl_Obj *tmpObj; |
---|
1128 | |
---|
1129 | /* |
---|
1130 | * Pull the information and construct the dictionary to return, as list. |
---|
1131 | * Regarding use of the CmdFrame fields see tclInt.h, and its definition. |
---|
1132 | */ |
---|
1133 | |
---|
1134 | #define ADD_PAIR(name, value) \ |
---|
1135 | TclNewLiteralStringObj(tmpObj, name); \ |
---|
1136 | lv[lc++] = tmpObj; \ |
---|
1137 | lv[lc++] = (value) |
---|
1138 | |
---|
1139 | switch (framePtr->type) { |
---|
1140 | case TCL_LOCATION_EVAL: |
---|
1141 | /* |
---|
1142 | * Evaluation, dynamic script. Type, line, cmd, the latter through |
---|
1143 | * str. |
---|
1144 | */ |
---|
1145 | |
---|
1146 | ADD_PAIR("type", Tcl_NewStringObj(typeString[framePtr->type], -1)); |
---|
1147 | ADD_PAIR("line", Tcl_NewIntObj(framePtr->line[0])); |
---|
1148 | ADD_PAIR("cmd", Tcl_NewStringObj(framePtr->cmd.str.cmd, |
---|
1149 | framePtr->cmd.str.len)); |
---|
1150 | break; |
---|
1151 | |
---|
1152 | case TCL_LOCATION_EVAL_LIST: |
---|
1153 | /* |
---|
1154 | * List optimized evaluation. Type, line, cmd, the latter through |
---|
1155 | * listPtr, possibly a frame. |
---|
1156 | */ |
---|
1157 | |
---|
1158 | ADD_PAIR("type", Tcl_NewStringObj(typeString[framePtr->type], -1)); |
---|
1159 | ADD_PAIR("line", Tcl_NewIntObj(framePtr->line[0])); |
---|
1160 | |
---|
1161 | /* |
---|
1162 | * We put a duplicate of the command list obj into the result to |
---|
1163 | * ensure that the 'pure List'-property of the command itself is not |
---|
1164 | * destroyed. Otherwise the query here would disable the list |
---|
1165 | * optimization path in Tcl_EvalObjEx. |
---|
1166 | */ |
---|
1167 | |
---|
1168 | ADD_PAIR("cmd", Tcl_DuplicateObj(framePtr->cmd.listPtr)); |
---|
1169 | break; |
---|
1170 | |
---|
1171 | case TCL_LOCATION_PREBC: |
---|
1172 | /* |
---|
1173 | * Precompiled. Result contains the type as signal, nothing else. |
---|
1174 | */ |
---|
1175 | |
---|
1176 | ADD_PAIR("type", Tcl_NewStringObj(typeString[framePtr->type], -1)); |
---|
1177 | break; |
---|
1178 | |
---|
1179 | case TCL_LOCATION_BC: { |
---|
1180 | /* |
---|
1181 | * Execution of bytecode. Talk to the BC engine to fill out the frame. |
---|
1182 | */ |
---|
1183 | |
---|
1184 | Proc *procPtr = |
---|
1185 | framePtr->framePtr ? framePtr->framePtr->procPtr : NULL; |
---|
1186 | CmdFrame *fPtr; |
---|
1187 | |
---|
1188 | fPtr = (CmdFrame *) TclStackAlloc(interp, sizeof(CmdFrame)); |
---|
1189 | *fPtr = *framePtr; |
---|
1190 | |
---|
1191 | /* |
---|
1192 | * Note: |
---|
1193 | * Type BC => f.data.eval.path is not used. |
---|
1194 | * f.data.tebc.codePtr is used instead. |
---|
1195 | */ |
---|
1196 | |
---|
1197 | TclGetSrcInfoForPc(fPtr); |
---|
1198 | |
---|
1199 | /* |
---|
1200 | * Now filled: cmd.str.(cmd,len), line |
---|
1201 | * Possibly modified: type, path! |
---|
1202 | */ |
---|
1203 | |
---|
1204 | ADD_PAIR("type", Tcl_NewStringObj(typeString[fPtr->type], -1)); |
---|
1205 | ADD_PAIR("line", Tcl_NewIntObj(fPtr->line[0])); |
---|
1206 | |
---|
1207 | if (fPtr->type == TCL_LOCATION_SOURCE) { |
---|
1208 | ADD_PAIR("file", fPtr->data.eval.path); |
---|
1209 | |
---|
1210 | /* |
---|
1211 | * Death of reference by TclGetSrcInfoForPc. |
---|
1212 | */ |
---|
1213 | |
---|
1214 | Tcl_DecrRefCount(fPtr->data.eval.path); |
---|
1215 | } |
---|
1216 | |
---|
1217 | ADD_PAIR("cmd", |
---|
1218 | Tcl_NewStringObj(fPtr->cmd.str.cmd, fPtr->cmd.str.len)); |
---|
1219 | |
---|
1220 | if (procPtr != NULL) { |
---|
1221 | Tcl_HashEntry *namePtr = procPtr->cmdPtr->hPtr; |
---|
1222 | |
---|
1223 | if (namePtr) { |
---|
1224 | /* |
---|
1225 | * This is a regular command. |
---|
1226 | */ |
---|
1227 | |
---|
1228 | char *procName = Tcl_GetHashKey(namePtr->tablePtr, namePtr); |
---|
1229 | char *nsName = procPtr->cmdPtr->nsPtr->fullName; |
---|
1230 | |
---|
1231 | ADD_PAIR("proc", Tcl_NewStringObj(nsName, -1)); |
---|
1232 | |
---|
1233 | if (strcmp(nsName, "::") != 0) { |
---|
1234 | Tcl_AppendToObj(lv[lc-1], "::", -1); |
---|
1235 | } |
---|
1236 | Tcl_AppendToObj(lv[lc-1], procName, -1); |
---|
1237 | } else if (procPtr->cmdPtr->clientData) { |
---|
1238 | ExtraFrameInfo *efiPtr = procPtr->cmdPtr->clientData; |
---|
1239 | int i; |
---|
1240 | |
---|
1241 | /* |
---|
1242 | * This is a non-standard command. Luckily, it's told us how |
---|
1243 | * to render extra information about its frame. |
---|
1244 | */ |
---|
1245 | |
---|
1246 | for (i=0 ; i<efiPtr->length ; i++) { |
---|
1247 | lv[lc++] = Tcl_NewStringObj(efiPtr->fields[i].name, -1); |
---|
1248 | if (efiPtr->fields[i].proc) { |
---|
1249 | lv[lc++] = efiPtr->fields[i].proc( |
---|
1250 | efiPtr->fields[i].clientData); |
---|
1251 | } else { |
---|
1252 | lv[lc++] = efiPtr->fields[i].clientData; |
---|
1253 | } |
---|
1254 | } |
---|
1255 | } |
---|
1256 | } |
---|
1257 | TclStackFree(interp, fPtr); |
---|
1258 | break; |
---|
1259 | } |
---|
1260 | |
---|
1261 | case TCL_LOCATION_SOURCE: |
---|
1262 | /* |
---|
1263 | * Evaluation of a script file. |
---|
1264 | */ |
---|
1265 | |
---|
1266 | ADD_PAIR("type", Tcl_NewStringObj(typeString[framePtr->type], -1)); |
---|
1267 | ADD_PAIR("line", Tcl_NewIntObj(framePtr->line[0])); |
---|
1268 | ADD_PAIR("file", framePtr->data.eval.path); |
---|
1269 | |
---|
1270 | /* |
---|
1271 | * Refcount framePtr->data.eval.path goes up when lv is converted into |
---|
1272 | * the result list object. |
---|
1273 | */ |
---|
1274 | |
---|
1275 | ADD_PAIR("cmd", Tcl_NewStringObj(framePtr->cmd.str.cmd, |
---|
1276 | framePtr->cmd.str.len)); |
---|
1277 | break; |
---|
1278 | |
---|
1279 | case TCL_LOCATION_PROC: |
---|
1280 | Tcl_Panic("TCL_LOCATION_PROC found in standard frame"); |
---|
1281 | break; |
---|
1282 | } |
---|
1283 | |
---|
1284 | /* |
---|
1285 | * 'level'. Common to all frame types. Conditional on having an associated |
---|
1286 | * _visible_ CallFrame. |
---|
1287 | */ |
---|
1288 | |
---|
1289 | if ((framePtr->framePtr != NULL) && (iPtr->varFramePtr != NULL)) { |
---|
1290 | CallFrame *current = framePtr->framePtr; |
---|
1291 | CallFrame *top = iPtr->varFramePtr; |
---|
1292 | CallFrame *idx; |
---|
1293 | |
---|
1294 | for (idx=top ; idx!=NULL ; idx=idx->callerVarPtr) { |
---|
1295 | if (idx == current) { |
---|
1296 | int c = framePtr->framePtr->level; |
---|
1297 | int t = iPtr->varFramePtr->level; |
---|
1298 | |
---|
1299 | ADD_PAIR("level", Tcl_NewIntObj(t - c)); |
---|
1300 | break; |
---|
1301 | } |
---|
1302 | } |
---|
1303 | } |
---|
1304 | |
---|
1305 | return Tcl_NewListObj(lc, lv); |
---|
1306 | } |
---|
1307 | |
---|
1308 | /* |
---|
1309 | *---------------------------------------------------------------------- |
---|
1310 | * |
---|
1311 | * InfoFunctionsCmd -- |
---|
1312 | * |
---|
1313 | * Called to implement the "info functions" command that returns the list |
---|
1314 | * of math functions matching an optional pattern. Handles the following |
---|
1315 | * syntax: |
---|
1316 | * |
---|
1317 | * info functions ?pattern? |
---|
1318 | * |
---|
1319 | * Results: |
---|
1320 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1321 | * |
---|
1322 | * Side effects: |
---|
1323 | * Returns a result in the interpreter's result object. If there is an |
---|
1324 | * error, the result is an error message. |
---|
1325 | * |
---|
1326 | *---------------------------------------------------------------------- |
---|
1327 | */ |
---|
1328 | |
---|
1329 | static int |
---|
1330 | InfoFunctionsCmd( |
---|
1331 | ClientData dummy, /* Not used. */ |
---|
1332 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1333 | int objc, /* Number of arguments. */ |
---|
1334 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1335 | { |
---|
1336 | char *pattern; |
---|
1337 | |
---|
1338 | if (objc == 1) { |
---|
1339 | pattern = NULL; |
---|
1340 | } else if (objc == 2) { |
---|
1341 | pattern = TclGetString(objv[1]); |
---|
1342 | } else { |
---|
1343 | Tcl_WrongNumArgs(interp, 1, objv, "?pattern?"); |
---|
1344 | return TCL_ERROR; |
---|
1345 | } |
---|
1346 | |
---|
1347 | Tcl_SetObjResult(interp, Tcl_ListMathFuncs(interp, pattern)); |
---|
1348 | return TCL_OK; |
---|
1349 | } |
---|
1350 | |
---|
1351 | /* |
---|
1352 | *---------------------------------------------------------------------- |
---|
1353 | * |
---|
1354 | * InfoHostnameCmd -- |
---|
1355 | * |
---|
1356 | * Called to implement the "info hostname" command that returns the host |
---|
1357 | * name. Handles the following syntax: |
---|
1358 | * |
---|
1359 | * info hostname |
---|
1360 | * |
---|
1361 | * Results: |
---|
1362 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1363 | * |
---|
1364 | * Side effects: |
---|
1365 | * Returns a result in the interpreter's result object. If there is an |
---|
1366 | * error, the result is an error message. |
---|
1367 | * |
---|
1368 | *---------------------------------------------------------------------- |
---|
1369 | */ |
---|
1370 | |
---|
1371 | static int |
---|
1372 | InfoHostnameCmd( |
---|
1373 | ClientData dummy, /* Not used. */ |
---|
1374 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1375 | int objc, /* Number of arguments. */ |
---|
1376 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1377 | { |
---|
1378 | CONST char *name; |
---|
1379 | |
---|
1380 | if (objc != 1) { |
---|
1381 | Tcl_WrongNumArgs(interp, 1, objv, NULL); |
---|
1382 | return TCL_ERROR; |
---|
1383 | } |
---|
1384 | |
---|
1385 | name = Tcl_GetHostName(); |
---|
1386 | if (name) { |
---|
1387 | Tcl_SetObjResult(interp, Tcl_NewStringObj(name, -1)); |
---|
1388 | return TCL_OK; |
---|
1389 | } |
---|
1390 | Tcl_SetResult(interp, "unable to determine name of host", TCL_STATIC); |
---|
1391 | return TCL_ERROR; |
---|
1392 | } |
---|
1393 | |
---|
1394 | /* |
---|
1395 | *---------------------------------------------------------------------- |
---|
1396 | * |
---|
1397 | * InfoLevelCmd -- |
---|
1398 | * |
---|
1399 | * Called to implement the "info level" command that returns information |
---|
1400 | * about the call stack. Handles the following syntax: |
---|
1401 | * |
---|
1402 | * info level ?number? |
---|
1403 | * |
---|
1404 | * Results: |
---|
1405 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1406 | * |
---|
1407 | * Side effects: |
---|
1408 | * Returns a result in the interpreter's result object. If there is an |
---|
1409 | * error, the result is an error message. |
---|
1410 | * |
---|
1411 | *---------------------------------------------------------------------- |
---|
1412 | */ |
---|
1413 | |
---|
1414 | static int |
---|
1415 | InfoLevelCmd( |
---|
1416 | ClientData dummy, /* Not used. */ |
---|
1417 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1418 | int objc, /* Number of arguments. */ |
---|
1419 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1420 | { |
---|
1421 | Interp *iPtr = (Interp *) interp; |
---|
1422 | |
---|
1423 | if (objc == 1) { /* Just "info level" */ |
---|
1424 | Tcl_SetObjResult(interp, Tcl_NewIntObj(iPtr->varFramePtr->level)); |
---|
1425 | return TCL_OK; |
---|
1426 | } |
---|
1427 | |
---|
1428 | if (objc == 2) { |
---|
1429 | int level; |
---|
1430 | CallFrame *framePtr, *rootFramePtr = iPtr->rootFramePtr; |
---|
1431 | |
---|
1432 | if (TclGetIntFromObj(interp, objv[1], &level) != TCL_OK) { |
---|
1433 | return TCL_ERROR; |
---|
1434 | } |
---|
1435 | if (level <= 0) { |
---|
1436 | if (iPtr->varFramePtr == rootFramePtr) { |
---|
1437 | goto levelError; |
---|
1438 | } |
---|
1439 | level += iPtr->varFramePtr->level; |
---|
1440 | } |
---|
1441 | for (framePtr=iPtr->varFramePtr ; framePtr!=rootFramePtr; |
---|
1442 | framePtr=framePtr->callerVarPtr) { |
---|
1443 | if (framePtr->level == level) { |
---|
1444 | break; |
---|
1445 | } |
---|
1446 | } |
---|
1447 | if (framePtr == rootFramePtr) { |
---|
1448 | goto levelError; |
---|
1449 | } |
---|
1450 | |
---|
1451 | Tcl_SetObjResult(interp, |
---|
1452 | Tcl_NewListObj(framePtr->objc, framePtr->objv)); |
---|
1453 | return TCL_OK; |
---|
1454 | } |
---|
1455 | |
---|
1456 | Tcl_WrongNumArgs(interp, 1, objv, "?number?"); |
---|
1457 | return TCL_ERROR; |
---|
1458 | |
---|
1459 | levelError: |
---|
1460 | Tcl_AppendResult(interp, "bad level \"", TclGetString(objv[1]), "\"", |
---|
1461 | NULL); |
---|
1462 | return TCL_ERROR; |
---|
1463 | } |
---|
1464 | |
---|
1465 | /* |
---|
1466 | *---------------------------------------------------------------------- |
---|
1467 | * |
---|
1468 | * InfoLibraryCmd -- |
---|
1469 | * |
---|
1470 | * Called to implement the "info library" command that returns the |
---|
1471 | * library directory for the Tcl installation. Handles the following |
---|
1472 | * syntax: |
---|
1473 | * |
---|
1474 | * info library |
---|
1475 | * |
---|
1476 | * Results: |
---|
1477 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1478 | * |
---|
1479 | * Side effects: |
---|
1480 | * Returns a result in the interpreter's result object. If there is an |
---|
1481 | * error, the result is an error message. |
---|
1482 | * |
---|
1483 | *---------------------------------------------------------------------- |
---|
1484 | */ |
---|
1485 | |
---|
1486 | static int |
---|
1487 | InfoLibraryCmd( |
---|
1488 | ClientData dummy, /* Not used. */ |
---|
1489 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1490 | int objc, /* Number of arguments. */ |
---|
1491 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1492 | { |
---|
1493 | CONST char *libDirName; |
---|
1494 | |
---|
1495 | if (objc != 1) { |
---|
1496 | Tcl_WrongNumArgs(interp, 1, objv, NULL); |
---|
1497 | return TCL_ERROR; |
---|
1498 | } |
---|
1499 | |
---|
1500 | libDirName = Tcl_GetVar(interp, "tcl_library", TCL_GLOBAL_ONLY); |
---|
1501 | if (libDirName != NULL) { |
---|
1502 | Tcl_SetObjResult(interp, Tcl_NewStringObj(libDirName, -1)); |
---|
1503 | return TCL_OK; |
---|
1504 | } |
---|
1505 | Tcl_SetResult(interp, "no library has been specified for Tcl",TCL_STATIC); |
---|
1506 | return TCL_ERROR; |
---|
1507 | } |
---|
1508 | |
---|
1509 | /* |
---|
1510 | *---------------------------------------------------------------------- |
---|
1511 | * |
---|
1512 | * InfoLoadedCmd -- |
---|
1513 | * |
---|
1514 | * Called to implement the "info loaded" command that returns the |
---|
1515 | * packages that have been loaded into an interpreter. Handles the |
---|
1516 | * following syntax: |
---|
1517 | * |
---|
1518 | * info loaded ?interp? |
---|
1519 | * |
---|
1520 | * Results: |
---|
1521 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1522 | * |
---|
1523 | * Side effects: |
---|
1524 | * Returns a result in the interpreter's result object. If there is an |
---|
1525 | * error, the result is an error message. |
---|
1526 | * |
---|
1527 | *---------------------------------------------------------------------- |
---|
1528 | */ |
---|
1529 | |
---|
1530 | static int |
---|
1531 | InfoLoadedCmd( |
---|
1532 | ClientData dummy, /* Not used. */ |
---|
1533 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1534 | int objc, /* Number of arguments. */ |
---|
1535 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1536 | { |
---|
1537 | char *interpName; |
---|
1538 | int result; |
---|
1539 | |
---|
1540 | if ((objc != 1) && (objc != 2)) { |
---|
1541 | Tcl_WrongNumArgs(interp, 1, objv, "?interp?"); |
---|
1542 | return TCL_ERROR; |
---|
1543 | } |
---|
1544 | |
---|
1545 | if (objc == 1) { /* Get loaded pkgs in all interpreters. */ |
---|
1546 | interpName = NULL; |
---|
1547 | } else { /* Get pkgs just in specified interp. */ |
---|
1548 | interpName = TclGetString(objv[1]); |
---|
1549 | } |
---|
1550 | result = TclGetLoadedPackages(interp, interpName); |
---|
1551 | return result; |
---|
1552 | } |
---|
1553 | |
---|
1554 | /* |
---|
1555 | *---------------------------------------------------------------------- |
---|
1556 | * |
---|
1557 | * InfoNameOfExecutableCmd -- |
---|
1558 | * |
---|
1559 | * Called to implement the "info nameofexecutable" command that returns |
---|
1560 | * the name of the binary file running this application. Handles the |
---|
1561 | * following syntax: |
---|
1562 | * |
---|
1563 | * info nameofexecutable |
---|
1564 | * |
---|
1565 | * Results: |
---|
1566 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1567 | * |
---|
1568 | * Side effects: |
---|
1569 | * Returns a result in the interpreter's result object. If there is an |
---|
1570 | * error, the result is an error message. |
---|
1571 | * |
---|
1572 | *---------------------------------------------------------------------- |
---|
1573 | */ |
---|
1574 | |
---|
1575 | static int |
---|
1576 | InfoNameOfExecutableCmd( |
---|
1577 | ClientData dummy, /* Not used. */ |
---|
1578 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1579 | int objc, /* Number of arguments. */ |
---|
1580 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1581 | { |
---|
1582 | if (objc != 1) { |
---|
1583 | Tcl_WrongNumArgs(interp, 1, objv, NULL); |
---|
1584 | return TCL_ERROR; |
---|
1585 | } |
---|
1586 | Tcl_SetObjResult(interp, TclGetObjNameOfExecutable()); |
---|
1587 | return TCL_OK; |
---|
1588 | } |
---|
1589 | |
---|
1590 | /* |
---|
1591 | *---------------------------------------------------------------------- |
---|
1592 | * |
---|
1593 | * InfoPatchLevelCmd -- |
---|
1594 | * |
---|
1595 | * Called to implement the "info patchlevel" command that returns the |
---|
1596 | * default value for an argument to a procedure. Handles the following |
---|
1597 | * syntax: |
---|
1598 | * |
---|
1599 | * info patchlevel |
---|
1600 | * |
---|
1601 | * Results: |
---|
1602 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1603 | * |
---|
1604 | * Side effects: |
---|
1605 | * Returns a result in the interpreter's result object. If there is an |
---|
1606 | * error, the result is an error message. |
---|
1607 | * |
---|
1608 | *---------------------------------------------------------------------- |
---|
1609 | */ |
---|
1610 | |
---|
1611 | static int |
---|
1612 | InfoPatchLevelCmd( |
---|
1613 | ClientData dummy, /* Not used. */ |
---|
1614 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1615 | int objc, /* Number of arguments. */ |
---|
1616 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1617 | { |
---|
1618 | CONST char *patchlevel; |
---|
1619 | |
---|
1620 | if (objc != 1) { |
---|
1621 | Tcl_WrongNumArgs(interp, 1, objv, NULL); |
---|
1622 | return TCL_ERROR; |
---|
1623 | } |
---|
1624 | |
---|
1625 | patchlevel = Tcl_GetVar(interp, "tcl_patchLevel", |
---|
1626 | (TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG)); |
---|
1627 | if (patchlevel != NULL) { |
---|
1628 | Tcl_SetObjResult(interp, Tcl_NewStringObj(patchlevel, -1)); |
---|
1629 | return TCL_OK; |
---|
1630 | } |
---|
1631 | return TCL_ERROR; |
---|
1632 | } |
---|
1633 | |
---|
1634 | /* |
---|
1635 | *---------------------------------------------------------------------- |
---|
1636 | * |
---|
1637 | * InfoProcsCmd -- |
---|
1638 | * |
---|
1639 | * Called to implement the "info procs" command that returns the list of |
---|
1640 | * procedures in the interpreter that match an optional pattern. The |
---|
1641 | * pattern, if any, consists of an optional sequence of namespace names |
---|
1642 | * separated by "::" qualifiers, which is followed by a glob-style |
---|
1643 | * pattern that restricts which commands are returned. Handles the |
---|
1644 | * following syntax: |
---|
1645 | * |
---|
1646 | * info procs ?pattern? |
---|
1647 | * |
---|
1648 | * Results: |
---|
1649 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1650 | * |
---|
1651 | * Side effects: |
---|
1652 | * Returns a result in the interpreter's result object. If there is an |
---|
1653 | * error, the result is an error message. |
---|
1654 | * |
---|
1655 | *---------------------------------------------------------------------- |
---|
1656 | */ |
---|
1657 | |
---|
1658 | static int |
---|
1659 | InfoProcsCmd( |
---|
1660 | ClientData dummy, /* Not used. */ |
---|
1661 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1662 | int objc, /* Number of arguments. */ |
---|
1663 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1664 | { |
---|
1665 | char *cmdName, *pattern; |
---|
1666 | CONST char *simplePattern; |
---|
1667 | Namespace *nsPtr; |
---|
1668 | #ifdef INFO_PROCS_SEARCH_GLOBAL_NS |
---|
1669 | Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp); |
---|
1670 | #endif |
---|
1671 | Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp); |
---|
1672 | Tcl_Obj *listPtr, *elemObjPtr; |
---|
1673 | int specificNsInPattern = 0;/* Init. to avoid compiler warning. */ |
---|
1674 | register Tcl_HashEntry *entryPtr; |
---|
1675 | Tcl_HashSearch search; |
---|
1676 | Command *cmdPtr, *realCmdPtr; |
---|
1677 | |
---|
1678 | /* |
---|
1679 | * Get the pattern and find the "effective namespace" in which to list |
---|
1680 | * procs. |
---|
1681 | */ |
---|
1682 | |
---|
1683 | if (objc == 1) { |
---|
1684 | simplePattern = NULL; |
---|
1685 | nsPtr = currNsPtr; |
---|
1686 | specificNsInPattern = 0; |
---|
1687 | } else if (objc == 2) { |
---|
1688 | /* |
---|
1689 | * From the pattern, get the effective namespace and the simple |
---|
1690 | * pattern (no namespace qualifiers or ::'s) at the end. If an error |
---|
1691 | * was found while parsing the pattern, return it. Otherwise, if the |
---|
1692 | * namespace wasn't found, just leave nsPtr NULL: we will return an |
---|
1693 | * empty list since no commands there can be found. |
---|
1694 | */ |
---|
1695 | |
---|
1696 | Namespace *dummy1NsPtr, *dummy2NsPtr; |
---|
1697 | |
---|
1698 | pattern = TclGetString(objv[1]); |
---|
1699 | TclGetNamespaceForQualName(interp, pattern, (Namespace *) NULL, |
---|
1700 | /*flags*/ 0, &nsPtr, &dummy1NsPtr, &dummy2NsPtr, |
---|
1701 | &simplePattern); |
---|
1702 | |
---|
1703 | if (nsPtr != NULL) { /* We successfully found the pattern's ns. */ |
---|
1704 | specificNsInPattern = (strcmp(simplePattern, pattern) != 0); |
---|
1705 | } |
---|
1706 | } else { |
---|
1707 | Tcl_WrongNumArgs(interp, 1, objv, "?pattern?"); |
---|
1708 | return TCL_ERROR; |
---|
1709 | } |
---|
1710 | |
---|
1711 | if (nsPtr == NULL) { |
---|
1712 | return TCL_OK; |
---|
1713 | } |
---|
1714 | |
---|
1715 | /* |
---|
1716 | * Scan through the effective namespace's command table and create a list |
---|
1717 | * with all procs that match the pattern. If a specific namespace was |
---|
1718 | * requested in the pattern, qualify the command names with the namespace |
---|
1719 | * name. |
---|
1720 | */ |
---|
1721 | |
---|
1722 | listPtr = Tcl_NewListObj(0, NULL); |
---|
1723 | #ifndef INFO_PROCS_SEARCH_GLOBAL_NS |
---|
1724 | if (simplePattern != NULL && TclMatchIsTrivial(simplePattern)) { |
---|
1725 | entryPtr = Tcl_FindHashEntry(&nsPtr->cmdTable, simplePattern); |
---|
1726 | if (entryPtr != NULL) { |
---|
1727 | cmdPtr = (Command *) Tcl_GetHashValue(entryPtr); |
---|
1728 | |
---|
1729 | if (!TclIsProc(cmdPtr)) { |
---|
1730 | realCmdPtr = (Command *) |
---|
1731 | TclGetOriginalCommand((Tcl_Command) cmdPtr); |
---|
1732 | if (realCmdPtr != NULL && TclIsProc(realCmdPtr)) { |
---|
1733 | goto simpleProcOK; |
---|
1734 | } |
---|
1735 | } else { |
---|
1736 | simpleProcOK: |
---|
1737 | if (specificNsInPattern) { |
---|
1738 | elemObjPtr = Tcl_NewObj(); |
---|
1739 | Tcl_GetCommandFullName(interp, (Tcl_Command) cmdPtr, |
---|
1740 | elemObjPtr); |
---|
1741 | } else { |
---|
1742 | elemObjPtr = Tcl_NewStringObj(simplePattern, -1); |
---|
1743 | } |
---|
1744 | Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr); |
---|
1745 | } |
---|
1746 | } |
---|
1747 | } else |
---|
1748 | #endif /* !INFO_PROCS_SEARCH_GLOBAL_NS */ |
---|
1749 | { |
---|
1750 | entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search); |
---|
1751 | while (entryPtr != NULL) { |
---|
1752 | cmdName = Tcl_GetHashKey(&nsPtr->cmdTable, entryPtr); |
---|
1753 | if ((simplePattern == NULL) |
---|
1754 | || Tcl_StringMatch(cmdName, simplePattern)) { |
---|
1755 | cmdPtr = (Command *) Tcl_GetHashValue(entryPtr); |
---|
1756 | |
---|
1757 | if (!TclIsProc(cmdPtr)) { |
---|
1758 | realCmdPtr = (Command *) |
---|
1759 | TclGetOriginalCommand((Tcl_Command) cmdPtr); |
---|
1760 | if (realCmdPtr != NULL && TclIsProc(realCmdPtr)) { |
---|
1761 | goto procOK; |
---|
1762 | } |
---|
1763 | } else { |
---|
1764 | procOK: |
---|
1765 | if (specificNsInPattern) { |
---|
1766 | elemObjPtr = Tcl_NewObj(); |
---|
1767 | Tcl_GetCommandFullName(interp, (Tcl_Command) cmdPtr, |
---|
1768 | elemObjPtr); |
---|
1769 | } else { |
---|
1770 | elemObjPtr = Tcl_NewStringObj(cmdName, -1); |
---|
1771 | } |
---|
1772 | Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr); |
---|
1773 | } |
---|
1774 | } |
---|
1775 | entryPtr = Tcl_NextHashEntry(&search); |
---|
1776 | } |
---|
1777 | |
---|
1778 | /* |
---|
1779 | * If the effective namespace isn't the global :: namespace, and a |
---|
1780 | * specific namespace wasn't requested in the pattern, then add in all |
---|
1781 | * global :: procs that match the simple pattern. Of course, we add in |
---|
1782 | * only those procs that aren't hidden by a proc in the effective |
---|
1783 | * namespace. |
---|
1784 | */ |
---|
1785 | |
---|
1786 | #ifdef INFO_PROCS_SEARCH_GLOBAL_NS |
---|
1787 | /* |
---|
1788 | * If "info procs" worked like "info commands", returning the commands |
---|
1789 | * also seen in the global namespace, then you would include this |
---|
1790 | * code. As this could break backwards compatibilty with 8.0-8.2, we |
---|
1791 | * decided not to "fix" it in 8.3, leaving the behavior slightly |
---|
1792 | * different. |
---|
1793 | */ |
---|
1794 | |
---|
1795 | if ((nsPtr != globalNsPtr) && !specificNsInPattern) { |
---|
1796 | entryPtr = Tcl_FirstHashEntry(&globalNsPtr->cmdTable, &search); |
---|
1797 | while (entryPtr != NULL) { |
---|
1798 | cmdName = Tcl_GetHashKey(&globalNsPtr->cmdTable, entryPtr); |
---|
1799 | if ((simplePattern == NULL) |
---|
1800 | || Tcl_StringMatch(cmdName, simplePattern)) { |
---|
1801 | if (Tcl_FindHashEntry(&nsPtr->cmdTable,cmdName) == NULL) { |
---|
1802 | cmdPtr = (Command *) Tcl_GetHashValue(entryPtr); |
---|
1803 | realCmdPtr = (Command *) TclGetOriginalCommand( |
---|
1804 | (Tcl_Command) cmdPtr); |
---|
1805 | |
---|
1806 | if (TclIsProc(cmdPtr) || ((realCmdPtr != NULL) |
---|
1807 | && TclIsProc(realCmdPtr))) { |
---|
1808 | Tcl_ListObjAppendElement(interp, listPtr, |
---|
1809 | Tcl_NewStringObj(cmdName, -1)); |
---|
1810 | } |
---|
1811 | } |
---|
1812 | } |
---|
1813 | entryPtr = Tcl_NextHashEntry(&search); |
---|
1814 | } |
---|
1815 | } |
---|
1816 | #endif |
---|
1817 | } |
---|
1818 | |
---|
1819 | Tcl_SetObjResult(interp, listPtr); |
---|
1820 | return TCL_OK; |
---|
1821 | } |
---|
1822 | |
---|
1823 | /* |
---|
1824 | *---------------------------------------------------------------------- |
---|
1825 | * |
---|
1826 | * InfoScriptCmd -- |
---|
1827 | * |
---|
1828 | * Called to implement the "info script" command that returns the script |
---|
1829 | * file that is currently being evaluated. Handles the following syntax: |
---|
1830 | * |
---|
1831 | * info script ?newName? |
---|
1832 | * |
---|
1833 | * If newName is specified, it will set that as the internal name. |
---|
1834 | * |
---|
1835 | * Results: |
---|
1836 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1837 | * |
---|
1838 | * Side effects: |
---|
1839 | * Returns a result in the interpreter's result object. If there is an |
---|
1840 | * error, the result is an error message. It may change the internal |
---|
1841 | * script filename. |
---|
1842 | * |
---|
1843 | *---------------------------------------------------------------------- |
---|
1844 | */ |
---|
1845 | |
---|
1846 | static int |
---|
1847 | InfoScriptCmd( |
---|
1848 | ClientData dummy, /* Not used. */ |
---|
1849 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1850 | int objc, /* Number of arguments. */ |
---|
1851 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1852 | { |
---|
1853 | Interp *iPtr = (Interp *) interp; |
---|
1854 | if ((objc != 1) && (objc != 2)) { |
---|
1855 | Tcl_WrongNumArgs(interp, 1, objv, "?filename?"); |
---|
1856 | return TCL_ERROR; |
---|
1857 | } |
---|
1858 | |
---|
1859 | if (objc == 2) { |
---|
1860 | if (iPtr->scriptFile != NULL) { |
---|
1861 | Tcl_DecrRefCount(iPtr->scriptFile); |
---|
1862 | } |
---|
1863 | iPtr->scriptFile = objv[1]; |
---|
1864 | Tcl_IncrRefCount(iPtr->scriptFile); |
---|
1865 | } |
---|
1866 | if (iPtr->scriptFile != NULL) { |
---|
1867 | Tcl_SetObjResult(interp, iPtr->scriptFile); |
---|
1868 | } |
---|
1869 | return TCL_OK; |
---|
1870 | } |
---|
1871 | |
---|
1872 | /* |
---|
1873 | *---------------------------------------------------------------------- |
---|
1874 | * |
---|
1875 | * InfoSharedlibCmd -- |
---|
1876 | * |
---|
1877 | * Called to implement the "info sharedlibextension" command that returns |
---|
1878 | * the file extension used for shared libraries. Handles the following |
---|
1879 | * syntax: |
---|
1880 | * |
---|
1881 | * info sharedlibextension |
---|
1882 | * |
---|
1883 | * Results: |
---|
1884 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1885 | * |
---|
1886 | * Side effects: |
---|
1887 | * Returns a result in the interpreter's result object. If there is an |
---|
1888 | * error, the result is an error message. |
---|
1889 | * |
---|
1890 | *---------------------------------------------------------------------- |
---|
1891 | */ |
---|
1892 | |
---|
1893 | static int |
---|
1894 | InfoSharedlibCmd( |
---|
1895 | ClientData dummy, /* Not used. */ |
---|
1896 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1897 | int objc, /* Number of arguments. */ |
---|
1898 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1899 | { |
---|
1900 | if (objc != 1) { |
---|
1901 | Tcl_WrongNumArgs(interp, 1, objv, NULL); |
---|
1902 | return TCL_ERROR; |
---|
1903 | } |
---|
1904 | |
---|
1905 | #ifdef TCL_SHLIB_EXT |
---|
1906 | Tcl_SetObjResult(interp, Tcl_NewStringObj(TCL_SHLIB_EXT, -1)); |
---|
1907 | #endif |
---|
1908 | return TCL_OK; |
---|
1909 | } |
---|
1910 | |
---|
1911 | /* |
---|
1912 | *---------------------------------------------------------------------- |
---|
1913 | * |
---|
1914 | * InfoTclVersionCmd -- |
---|
1915 | * |
---|
1916 | * Called to implement the "info tclversion" command that returns the |
---|
1917 | * version number for this Tcl library. Handles the following syntax: |
---|
1918 | * |
---|
1919 | * info tclversion |
---|
1920 | * |
---|
1921 | * Results: |
---|
1922 | * Returns TCL_OK if successful and TCL_ERROR if there is an error. |
---|
1923 | * |
---|
1924 | * Side effects: |
---|
1925 | * Returns a result in the interpreter's result object. If there is an |
---|
1926 | * error, the result is an error message. |
---|
1927 | * |
---|
1928 | *---------------------------------------------------------------------- |
---|
1929 | */ |
---|
1930 | |
---|
1931 | static int |
---|
1932 | InfoTclVersionCmd( |
---|
1933 | ClientData dummy, /* Not used. */ |
---|
1934 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1935 | int objc, /* Number of arguments. */ |
---|
1936 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
1937 | { |
---|
1938 | Tcl_Obj *version; |
---|
1939 | |
---|
1940 | if (objc != 1) { |
---|
1941 | Tcl_WrongNumArgs(interp, 1, objv, NULL); |
---|
1942 | return TCL_ERROR; |
---|
1943 | } |
---|
1944 | |
---|
1945 | version = Tcl_GetVar2Ex(interp, "tcl_version", NULL, |
---|
1946 | (TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG)); |
---|
1947 | if (version != NULL) { |
---|
1948 | Tcl_SetObjResult(interp, version); |
---|
1949 | return TCL_OK; |
---|
1950 | } |
---|
1951 | return TCL_ERROR; |
---|
1952 | } |
---|
1953 | |
---|
1954 | /* |
---|
1955 | *---------------------------------------------------------------------- |
---|
1956 | * |
---|
1957 | * Tcl_JoinObjCmd -- |
---|
1958 | * |
---|
1959 | * This procedure is invoked to process the "join" Tcl command. See the |
---|
1960 | * user documentation for details on what it does. |
---|
1961 | * |
---|
1962 | * Results: |
---|
1963 | * A standard Tcl object result. |
---|
1964 | * |
---|
1965 | * Side effects: |
---|
1966 | * See the user documentation. |
---|
1967 | * |
---|
1968 | *---------------------------------------------------------------------- |
---|
1969 | */ |
---|
1970 | |
---|
1971 | int |
---|
1972 | Tcl_JoinObjCmd( |
---|
1973 | ClientData dummy, /* Not used. */ |
---|
1974 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
1975 | int objc, /* Number of arguments. */ |
---|
1976 | Tcl_Obj *CONST objv[]) /* The argument objects. */ |
---|
1977 | { |
---|
1978 | int listLen, i; |
---|
1979 | Tcl_Obj *resObjPtr, *joinObjPtr, **elemPtrs; |
---|
1980 | |
---|
1981 | if ((objc < 2) || (objc > 3)) { |
---|
1982 | Tcl_WrongNumArgs(interp, 1, objv, "list ?joinString?"); |
---|
1983 | return TCL_ERROR; |
---|
1984 | } |
---|
1985 | |
---|
1986 | /* |
---|
1987 | * Make sure the list argument is a list object and get its length and a |
---|
1988 | * pointer to its array of element pointers. |
---|
1989 | */ |
---|
1990 | |
---|
1991 | if (TclListObjGetElements(interp, objv[1], &listLen, |
---|
1992 | &elemPtrs) != TCL_OK) { |
---|
1993 | return TCL_ERROR; |
---|
1994 | } |
---|
1995 | |
---|
1996 | joinObjPtr = (objc == 2) ? Tcl_NewStringObj(" ", 1) : objv[2]; |
---|
1997 | Tcl_IncrRefCount(joinObjPtr); |
---|
1998 | |
---|
1999 | resObjPtr = Tcl_NewObj(); |
---|
2000 | for (i = 0; i < listLen; i++) { |
---|
2001 | if (i > 0) { |
---|
2002 | Tcl_AppendObjToObj(resObjPtr, joinObjPtr); |
---|
2003 | } |
---|
2004 | Tcl_AppendObjToObj(resObjPtr, elemPtrs[i]); |
---|
2005 | } |
---|
2006 | Tcl_DecrRefCount(joinObjPtr); |
---|
2007 | Tcl_SetObjResult(interp, resObjPtr); |
---|
2008 | return TCL_OK; |
---|
2009 | } |
---|
2010 | |
---|
2011 | /* |
---|
2012 | *---------------------------------------------------------------------- |
---|
2013 | * |
---|
2014 | * Tcl_LassignObjCmd -- |
---|
2015 | * |
---|
2016 | * This object-based procedure is invoked to process the "lassign" Tcl |
---|
2017 | * command. See the user documentation for details on what it does. |
---|
2018 | * |
---|
2019 | * Results: |
---|
2020 | * A standard Tcl object result. |
---|
2021 | * |
---|
2022 | * Side effects: |
---|
2023 | * See the user documentation. |
---|
2024 | * |
---|
2025 | *---------------------------------------------------------------------- |
---|
2026 | */ |
---|
2027 | |
---|
2028 | int |
---|
2029 | Tcl_LassignObjCmd( |
---|
2030 | ClientData dummy, /* Not used. */ |
---|
2031 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
2032 | int objc, /* Number of arguments. */ |
---|
2033 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
2034 | { |
---|
2035 | Tcl_Obj *listCopyPtr; |
---|
2036 | Tcl_Obj **listObjv; /* The contents of the list. */ |
---|
2037 | int listObjc; /* The length of the list. */ |
---|
2038 | int code = TCL_OK; |
---|
2039 | |
---|
2040 | if (objc < 3) { |
---|
2041 | Tcl_WrongNumArgs(interp, 1, objv, "list varName ?varName ...?"); |
---|
2042 | return TCL_ERROR; |
---|
2043 | } |
---|
2044 | |
---|
2045 | listCopyPtr = TclListObjCopy(interp, objv[1]); |
---|
2046 | if (listCopyPtr == NULL) { |
---|
2047 | return TCL_ERROR; |
---|
2048 | } |
---|
2049 | |
---|
2050 | TclListObjGetElements(NULL, listCopyPtr, &listObjc, &listObjv); |
---|
2051 | |
---|
2052 | objc -= 2; |
---|
2053 | objv += 2; |
---|
2054 | while (code == TCL_OK && objc > 0 && listObjc > 0) { |
---|
2055 | if (NULL == Tcl_ObjSetVar2(interp, *objv++, NULL, |
---|
2056 | *listObjv++, TCL_LEAVE_ERR_MSG)) { |
---|
2057 | code = TCL_ERROR; |
---|
2058 | } |
---|
2059 | objc--; listObjc--; |
---|
2060 | } |
---|
2061 | |
---|
2062 | if (code == TCL_OK && objc > 0) { |
---|
2063 | Tcl_Obj *emptyObj; |
---|
2064 | TclNewObj(emptyObj); |
---|
2065 | Tcl_IncrRefCount(emptyObj); |
---|
2066 | while (code == TCL_OK && objc-- > 0) { |
---|
2067 | if (NULL == Tcl_ObjSetVar2(interp, *objv++, NULL, |
---|
2068 | emptyObj, TCL_LEAVE_ERR_MSG)) { |
---|
2069 | code = TCL_ERROR; |
---|
2070 | } |
---|
2071 | } |
---|
2072 | Tcl_DecrRefCount(emptyObj); |
---|
2073 | } |
---|
2074 | |
---|
2075 | if (code == TCL_OK && listObjc > 0) { |
---|
2076 | Tcl_SetObjResult(interp, Tcl_NewListObj(listObjc, listObjv)); |
---|
2077 | } |
---|
2078 | |
---|
2079 | Tcl_DecrRefCount(listCopyPtr); |
---|
2080 | return code; |
---|
2081 | } |
---|
2082 | |
---|
2083 | /* |
---|
2084 | *---------------------------------------------------------------------- |
---|
2085 | * |
---|
2086 | * Tcl_LindexObjCmd -- |
---|
2087 | * |
---|
2088 | * This object-based procedure is invoked to process the "lindex" Tcl |
---|
2089 | * command. See the user documentation for details on what it does. |
---|
2090 | * |
---|
2091 | * Results: |
---|
2092 | * A standard Tcl object result. |
---|
2093 | * |
---|
2094 | * Side effects: |
---|
2095 | * See the user documentation. |
---|
2096 | * |
---|
2097 | *---------------------------------------------------------------------- |
---|
2098 | */ |
---|
2099 | |
---|
2100 | int |
---|
2101 | Tcl_LindexObjCmd( |
---|
2102 | ClientData dummy, /* Not used. */ |
---|
2103 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
2104 | int objc, /* Number of arguments. */ |
---|
2105 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
2106 | { |
---|
2107 | |
---|
2108 | Tcl_Obj *elemPtr; /* Pointer to the element being extracted. */ |
---|
2109 | |
---|
2110 | if (objc < 2) { |
---|
2111 | Tcl_WrongNumArgs(interp, 1, objv, "list ?index...?"); |
---|
2112 | return TCL_ERROR; |
---|
2113 | } |
---|
2114 | |
---|
2115 | /* |
---|
2116 | * If objc==3, then objv[2] may be either a single index or a list of |
---|
2117 | * indices: go to TclLindexList to determine which. If objc>=4, or |
---|
2118 | * objc==2, then objv[2 .. objc-2] are all single indices and processed as |
---|
2119 | * such in TclLindexFlat. |
---|
2120 | */ |
---|
2121 | |
---|
2122 | if (objc == 3) { |
---|
2123 | elemPtr = TclLindexList(interp, objv[1], objv[2]); |
---|
2124 | } else { |
---|
2125 | elemPtr = TclLindexFlat(interp, objv[1], objc-2, objv+2); |
---|
2126 | } |
---|
2127 | |
---|
2128 | /* |
---|
2129 | * Set the interpreter's object result to the last element extracted. |
---|
2130 | */ |
---|
2131 | |
---|
2132 | if (elemPtr == NULL) { |
---|
2133 | return TCL_ERROR; |
---|
2134 | } else { |
---|
2135 | Tcl_SetObjResult(interp, elemPtr); |
---|
2136 | Tcl_DecrRefCount(elemPtr); |
---|
2137 | return TCL_OK; |
---|
2138 | } |
---|
2139 | } |
---|
2140 | |
---|
2141 | /* |
---|
2142 | *---------------------------------------------------------------------- |
---|
2143 | * |
---|
2144 | * Tcl_LinsertObjCmd -- |
---|
2145 | * |
---|
2146 | * This object-based procedure is invoked to process the "linsert" Tcl |
---|
2147 | * command. See the user documentation for details on what it does. |
---|
2148 | * |
---|
2149 | * Results: |
---|
2150 | * A new Tcl list object formed by inserting zero or more elements into a |
---|
2151 | * list. |
---|
2152 | * |
---|
2153 | * Side effects: |
---|
2154 | * See the user documentation. |
---|
2155 | * |
---|
2156 | *---------------------------------------------------------------------- |
---|
2157 | */ |
---|
2158 | |
---|
2159 | int |
---|
2160 | Tcl_LinsertObjCmd( |
---|
2161 | ClientData dummy, /* Not used. */ |
---|
2162 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
2163 | register int objc, /* Number of arguments. */ |
---|
2164 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
2165 | { |
---|
2166 | Tcl_Obj *listPtr; |
---|
2167 | int index, len, result; |
---|
2168 | |
---|
2169 | if (objc < 4) { |
---|
2170 | Tcl_WrongNumArgs(interp, 1, objv, "list index element ?element ...?"); |
---|
2171 | return TCL_ERROR; |
---|
2172 | } |
---|
2173 | |
---|
2174 | result = TclListObjLength(interp, objv[1], &len); |
---|
2175 | if (result != TCL_OK) { |
---|
2176 | return result; |
---|
2177 | } |
---|
2178 | |
---|
2179 | /* |
---|
2180 | * Get the index. "end" is interpreted to be the index after the last |
---|
2181 | * element, such that using it will cause any inserted elements to be |
---|
2182 | * appended to the list. |
---|
2183 | */ |
---|
2184 | |
---|
2185 | result = TclGetIntForIndexM(interp, objv[2], /*end*/ len, &index); |
---|
2186 | if (result != TCL_OK) { |
---|
2187 | return result; |
---|
2188 | } |
---|
2189 | if (index > len) { |
---|
2190 | index = len; |
---|
2191 | } |
---|
2192 | |
---|
2193 | /* |
---|
2194 | * If the list object is unshared we can modify it directly. Otherwise we |
---|
2195 | * create a copy to modify: this is "copy on write". |
---|
2196 | */ |
---|
2197 | |
---|
2198 | listPtr = objv[1]; |
---|
2199 | if (Tcl_IsShared(listPtr)) { |
---|
2200 | listPtr = TclListObjCopy(NULL, listPtr); |
---|
2201 | } |
---|
2202 | |
---|
2203 | if ((objc == 4) && (index == len)) { |
---|
2204 | /* |
---|
2205 | * Special case: insert one element at the end of the list. |
---|
2206 | */ |
---|
2207 | |
---|
2208 | Tcl_ListObjAppendElement(NULL, listPtr, objv[3]); |
---|
2209 | } else { |
---|
2210 | Tcl_ListObjReplace(NULL, listPtr, index, 0, (objc-3), &(objv[3])); |
---|
2211 | } |
---|
2212 | |
---|
2213 | /* |
---|
2214 | * Set the interpreter's object result. |
---|
2215 | */ |
---|
2216 | |
---|
2217 | Tcl_SetObjResult(interp, listPtr); |
---|
2218 | return TCL_OK; |
---|
2219 | } |
---|
2220 | |
---|
2221 | /* |
---|
2222 | *---------------------------------------------------------------------- |
---|
2223 | * |
---|
2224 | * Tcl_ListObjCmd -- |
---|
2225 | * |
---|
2226 | * This procedure is invoked to process the "list" Tcl command. See the |
---|
2227 | * user documentation for details on what it does. |
---|
2228 | * |
---|
2229 | * Results: |
---|
2230 | * A standard Tcl object result. |
---|
2231 | * |
---|
2232 | * Side effects: |
---|
2233 | * See the user documentation. |
---|
2234 | * |
---|
2235 | *---------------------------------------------------------------------- |
---|
2236 | */ |
---|
2237 | |
---|
2238 | int |
---|
2239 | Tcl_ListObjCmd( |
---|
2240 | ClientData dummy, /* Not used. */ |
---|
2241 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
2242 | register int objc, /* Number of arguments. */ |
---|
2243 | register Tcl_Obj *CONST objv[]) |
---|
2244 | /* The argument objects. */ |
---|
2245 | { |
---|
2246 | /* |
---|
2247 | * If there are no list elements, the result is an empty object. |
---|
2248 | * Otherwise set the interpreter's result object to be a list object. |
---|
2249 | */ |
---|
2250 | |
---|
2251 | if (objc > 1) { |
---|
2252 | Tcl_SetObjResult(interp, Tcl_NewListObj((objc-1), &(objv[1]))); |
---|
2253 | } |
---|
2254 | return TCL_OK; |
---|
2255 | } |
---|
2256 | |
---|
2257 | /* |
---|
2258 | *---------------------------------------------------------------------- |
---|
2259 | * |
---|
2260 | * Tcl_LlengthObjCmd -- |
---|
2261 | * |
---|
2262 | * This object-based procedure is invoked to process the "llength" Tcl |
---|
2263 | * command. See the user documentation for details on what it does. |
---|
2264 | * |
---|
2265 | * Results: |
---|
2266 | * A standard Tcl object result. |
---|
2267 | * |
---|
2268 | * Side effects: |
---|
2269 | * See the user documentation. |
---|
2270 | * |
---|
2271 | *---------------------------------------------------------------------- |
---|
2272 | */ |
---|
2273 | |
---|
2274 | int |
---|
2275 | Tcl_LlengthObjCmd( |
---|
2276 | ClientData dummy, /* Not used. */ |
---|
2277 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
2278 | int objc, /* Number of arguments. */ |
---|
2279 | register Tcl_Obj *CONST objv[]) |
---|
2280 | /* Argument objects. */ |
---|
2281 | { |
---|
2282 | int listLen, result; |
---|
2283 | |
---|
2284 | if (objc != 2) { |
---|
2285 | Tcl_WrongNumArgs(interp, 1, objv, "list"); |
---|
2286 | return TCL_ERROR; |
---|
2287 | } |
---|
2288 | |
---|
2289 | result = TclListObjLength(interp, objv[1], &listLen); |
---|
2290 | if (result != TCL_OK) { |
---|
2291 | return result; |
---|
2292 | } |
---|
2293 | |
---|
2294 | /* |
---|
2295 | * Set the interpreter's object result to an integer object holding the |
---|
2296 | * length. |
---|
2297 | */ |
---|
2298 | |
---|
2299 | Tcl_SetObjResult(interp, Tcl_NewIntObj(listLen)); |
---|
2300 | return TCL_OK; |
---|
2301 | } |
---|
2302 | |
---|
2303 | /* |
---|
2304 | *---------------------------------------------------------------------- |
---|
2305 | * |
---|
2306 | * Tcl_LrangeObjCmd -- |
---|
2307 | * |
---|
2308 | * This procedure is invoked to process the "lrange" Tcl command. See the |
---|
2309 | * user documentation for details on what it does. |
---|
2310 | * |
---|
2311 | * Results: |
---|
2312 | * A standard Tcl object result. |
---|
2313 | * |
---|
2314 | * Side effects: |
---|
2315 | * See the user documentation. |
---|
2316 | * |
---|
2317 | *---------------------------------------------------------------------- |
---|
2318 | */ |
---|
2319 | |
---|
2320 | int |
---|
2321 | Tcl_LrangeObjCmd( |
---|
2322 | ClientData notUsed, /* Not used. */ |
---|
2323 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
2324 | int objc, /* Number of arguments. */ |
---|
2325 | register Tcl_Obj *CONST objv[]) |
---|
2326 | /* Argument objects. */ |
---|
2327 | { |
---|
2328 | Tcl_Obj *listPtr, **elemPtrs; |
---|
2329 | int listLen, first, result; |
---|
2330 | |
---|
2331 | if (objc != 4) { |
---|
2332 | Tcl_WrongNumArgs(interp, 1, objv, "list first last"); |
---|
2333 | return TCL_ERROR; |
---|
2334 | } |
---|
2335 | |
---|
2336 | /* |
---|
2337 | * Make sure the list argument is a list object and get its length and a |
---|
2338 | * pointer to its array of element pointers. |
---|
2339 | */ |
---|
2340 | |
---|
2341 | listPtr = TclListObjCopy(interp, objv[1]); |
---|
2342 | if (listPtr == NULL) { |
---|
2343 | return TCL_ERROR; |
---|
2344 | } |
---|
2345 | TclListObjGetElements(NULL, listPtr, &listLen, &elemPtrs); |
---|
2346 | |
---|
2347 | result = TclGetIntForIndexM(interp, objv[2], /*endValue*/ listLen - 1, |
---|
2348 | &first); |
---|
2349 | if (result == TCL_OK) { |
---|
2350 | int last; |
---|
2351 | |
---|
2352 | if (first < 0) { |
---|
2353 | first = 0; |
---|
2354 | } |
---|
2355 | |
---|
2356 | result = TclGetIntForIndexM(interp, objv[3], /*endValue*/ listLen - 1, |
---|
2357 | &last); |
---|
2358 | if (result == TCL_OK) { |
---|
2359 | if (last >= listLen) { |
---|
2360 | last = (listLen - 1); |
---|
2361 | } |
---|
2362 | |
---|
2363 | if (first <= last) { |
---|
2364 | int numElems = (last - first + 1); |
---|
2365 | |
---|
2366 | Tcl_SetObjResult(interp, |
---|
2367 | Tcl_NewListObj(numElems, &(elemPtrs[first]))); |
---|
2368 | } |
---|
2369 | } |
---|
2370 | } |
---|
2371 | |
---|
2372 | Tcl_DecrRefCount(listPtr); |
---|
2373 | return result; |
---|
2374 | } |
---|
2375 | |
---|
2376 | /* |
---|
2377 | *---------------------------------------------------------------------- |
---|
2378 | * |
---|
2379 | * Tcl_LrepeatObjCmd -- |
---|
2380 | * |
---|
2381 | * This procedure is invoked to process the "lrepeat" Tcl command. See |
---|
2382 | * the user documentation for details on what it does. |
---|
2383 | * |
---|
2384 | * Results: |
---|
2385 | * A standard Tcl object result. |
---|
2386 | * |
---|
2387 | * Side effects: |
---|
2388 | * See the user documentation. |
---|
2389 | * |
---|
2390 | *---------------------------------------------------------------------- |
---|
2391 | */ |
---|
2392 | |
---|
2393 | int |
---|
2394 | Tcl_LrepeatObjCmd( |
---|
2395 | ClientData dummy, /* Not used. */ |
---|
2396 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
2397 | register int objc, /* Number of arguments. */ |
---|
2398 | register Tcl_Obj *CONST objv[]) |
---|
2399 | /* The argument objects. */ |
---|
2400 | { |
---|
2401 | int elementCount, i, result; |
---|
2402 | Tcl_Obj *listPtr, **dataArray; |
---|
2403 | List *listRepPtr; |
---|
2404 | |
---|
2405 | /* |
---|
2406 | * Check arguments for legality: |
---|
2407 | * lrepeat posInt value ?value ...? |
---|
2408 | */ |
---|
2409 | |
---|
2410 | if (objc < 3) { |
---|
2411 | Tcl_WrongNumArgs(interp, 1, objv, "positiveCount value ?value ...?"); |
---|
2412 | return TCL_ERROR; |
---|
2413 | } |
---|
2414 | result = TclGetIntFromObj(interp, objv[1], &elementCount); |
---|
2415 | if (result == TCL_ERROR) { |
---|
2416 | return TCL_ERROR; |
---|
2417 | } |
---|
2418 | if (elementCount < 1) { |
---|
2419 | Tcl_AppendResult(interp, "must have a count of at least 1", NULL); |
---|
2420 | return TCL_ERROR; |
---|
2421 | } |
---|
2422 | |
---|
2423 | /* |
---|
2424 | * Skip forward to the interesting arguments now we've finished parsing. |
---|
2425 | */ |
---|
2426 | |
---|
2427 | objc -= 2; |
---|
2428 | objv += 2; |
---|
2429 | |
---|
2430 | /* |
---|
2431 | * Get an empty list object that is allocated large enough to hold each |
---|
2432 | * init value elementCount times. |
---|
2433 | */ |
---|
2434 | |
---|
2435 | listPtr = Tcl_NewListObj(elementCount*objc, NULL); |
---|
2436 | listRepPtr = (List *) listPtr->internalRep.twoPtrValue.ptr1; |
---|
2437 | listRepPtr->elemCount = elementCount*objc; |
---|
2438 | dataArray = &listRepPtr->elements; |
---|
2439 | |
---|
2440 | /* |
---|
2441 | * Set the elements. Note that we handle the common degenerate case of a |
---|
2442 | * single value being repeated separately to permit the compiler as much |
---|
2443 | * room as possible to optimize a loop that might be run a very large |
---|
2444 | * number of times. |
---|
2445 | */ |
---|
2446 | |
---|
2447 | if (objc == 1) { |
---|
2448 | register Tcl_Obj *tmpPtr = objv[0]; |
---|
2449 | |
---|
2450 | tmpPtr->refCount += elementCount; |
---|
2451 | for (i=0 ; i<elementCount ; i++) { |
---|
2452 | dataArray[i] = tmpPtr; |
---|
2453 | } |
---|
2454 | } else { |
---|
2455 | int j, k = 0; |
---|
2456 | |
---|
2457 | for (i=0 ; i<elementCount ; i++) { |
---|
2458 | for (j=0 ; j<objc ; j++) { |
---|
2459 | Tcl_IncrRefCount(objv[j]); |
---|
2460 | dataArray[k++] = objv[j]; |
---|
2461 | } |
---|
2462 | } |
---|
2463 | } |
---|
2464 | |
---|
2465 | Tcl_SetObjResult(interp, listPtr); |
---|
2466 | return TCL_OK; |
---|
2467 | } |
---|
2468 | |
---|
2469 | /* |
---|
2470 | *---------------------------------------------------------------------- |
---|
2471 | * |
---|
2472 | * Tcl_LreplaceObjCmd -- |
---|
2473 | * |
---|
2474 | * This object-based procedure is invoked to process the "lreplace" Tcl |
---|
2475 | * command. See the user documentation for details on what it does. |
---|
2476 | * |
---|
2477 | * Results: |
---|
2478 | * A new Tcl list object formed by replacing zero or more elements of a |
---|
2479 | * list. |
---|
2480 | * |
---|
2481 | * Side effects: |
---|
2482 | * See the user documentation. |
---|
2483 | * |
---|
2484 | *---------------------------------------------------------------------- |
---|
2485 | */ |
---|
2486 | |
---|
2487 | int |
---|
2488 | Tcl_LreplaceObjCmd( |
---|
2489 | ClientData dummy, /* Not used. */ |
---|
2490 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
2491 | int objc, /* Number of arguments. */ |
---|
2492 | Tcl_Obj *CONST objv[]) /* Argument objects. */ |
---|
2493 | { |
---|
2494 | register Tcl_Obj *listPtr; |
---|
2495 | int first, last, listLen, numToDelete, result; |
---|
2496 | |
---|
2497 | if (objc < 4) { |
---|
2498 | Tcl_WrongNumArgs(interp, 1, objv, |
---|
2499 | "list first last ?element element ...?"); |
---|
2500 | return TCL_ERROR; |
---|
2501 | } |
---|
2502 | |
---|
2503 | result = TclListObjLength(interp, objv[1], &listLen); |
---|
2504 | if (result != TCL_OK) { |
---|
2505 | return result; |
---|
2506 | } |
---|
2507 | |
---|
2508 | /* |
---|
2509 | * Get the first and last indexes. "end" is interpreted to be the index |
---|
2510 | * for the last element, such that using it will cause that element to be |
---|
2511 | * included for deletion. |
---|
2512 | */ |
---|
2513 | |
---|
2514 | result = TclGetIntForIndexM(interp, objv[2], /*end*/ listLen-1, &first); |
---|
2515 | if (result != TCL_OK) { |
---|
2516 | return result; |
---|
2517 | } |
---|
2518 | |
---|
2519 | result = TclGetIntForIndexM(interp, objv[3], /*end*/ listLen-1, &last); |
---|
2520 | if (result != TCL_OK) { |
---|
2521 | return result; |
---|
2522 | } |
---|
2523 | |
---|
2524 | if (first < 0) { |
---|
2525 | first = 0; |
---|
2526 | } |
---|
2527 | |
---|
2528 | /* |
---|
2529 | * Complain if the user asked for a start element that is greater than the |
---|
2530 | * list length. This won't ever trigger for the "end-*" case as that will |
---|
2531 | * be properly constrained by TclGetIntForIndex because we use listLen-1 |
---|
2532 | * (to allow for replacing the last elem). |
---|
2533 | */ |
---|
2534 | |
---|
2535 | if ((first >= listLen) && (listLen > 0)) { |
---|
2536 | Tcl_AppendResult(interp, "list doesn't contain element ", |
---|
2537 | TclGetString(objv[2]), NULL); |
---|
2538 | return TCL_ERROR; |
---|
2539 | } |
---|
2540 | if (last >= listLen) { |
---|
2541 | last = (listLen - 1); |
---|
2542 | } |
---|
2543 | if (first <= last) { |
---|
2544 | numToDelete = (last - first + 1); |
---|
2545 | } else { |
---|
2546 | numToDelete = 0; |
---|
2547 | } |
---|
2548 | |
---|
2549 | /* |
---|
2550 | * If the list object is unshared we can modify it directly, otherwise we |
---|
2551 | * create a copy to modify: this is "copy on write". |
---|
2552 | */ |
---|
2553 | |
---|
2554 | listPtr = objv[1]; |
---|
2555 | if (Tcl_IsShared(listPtr)) { |
---|
2556 | listPtr = TclListObjCopy(NULL, listPtr); |
---|
2557 | } |
---|
2558 | |
---|
2559 | /* |
---|
2560 | * Note that we call Tcl_ListObjReplace even when numToDelete == 0 and |
---|
2561 | * objc == 4. In this case, the list value of listPtr is not changed (no |
---|
2562 | * elements are removed or added), but by making the call we are assured |
---|
2563 | * we end up with a list in canonical form. Resist any temptation to |
---|
2564 | * optimize this case away. |
---|
2565 | */ |
---|
2566 | |
---|
2567 | Tcl_ListObjReplace(NULL, listPtr, first, numToDelete, objc-4, &(objv[4])); |
---|
2568 | |
---|
2569 | /* |
---|
2570 | * Set the interpreter's object result. |
---|
2571 | */ |
---|
2572 | |
---|
2573 | Tcl_SetObjResult(interp, listPtr); |
---|
2574 | return TCL_OK; |
---|
2575 | } |
---|
2576 | |
---|
2577 | /* |
---|
2578 | *---------------------------------------------------------------------- |
---|
2579 | * |
---|
2580 | * Tcl_LreverseObjCmd -- |
---|
2581 | * |
---|
2582 | * This procedure is invoked to process the "lreverse" Tcl command. See |
---|
2583 | * the user documentation for details on what it does. |
---|
2584 | * |
---|
2585 | * Results: |
---|
2586 | * A standard Tcl result. |
---|
2587 | * |
---|
2588 | * Side effects: |
---|
2589 | * See the user documentation. |
---|
2590 | * |
---|
2591 | *---------------------------------------------------------------------- |
---|
2592 | */ |
---|
2593 | |
---|
2594 | int |
---|
2595 | Tcl_LreverseObjCmd( |
---|
2596 | ClientData clientData, /* Not used. */ |
---|
2597 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
2598 | int objc, /* Number of arguments. */ |
---|
2599 | Tcl_Obj *CONST objv[]) /* Argument values. */ |
---|
2600 | { |
---|
2601 | Tcl_Obj **elemv; |
---|
2602 | int elemc, i, j; |
---|
2603 | |
---|
2604 | if (objc != 2) { |
---|
2605 | Tcl_WrongNumArgs(interp, 1, objv, "list"); |
---|
2606 | return TCL_ERROR; |
---|
2607 | } |
---|
2608 | if (TclListObjGetElements(interp, objv[1], &elemc, &elemv) != TCL_OK) { |
---|
2609 | return TCL_ERROR; |
---|
2610 | } |
---|
2611 | |
---|
2612 | /* |
---|
2613 | * If the list is empty, just return it [Bug 1876793] |
---|
2614 | */ |
---|
2615 | |
---|
2616 | if (!elemc) { |
---|
2617 | Tcl_SetObjResult(interp, objv[1]); |
---|
2618 | return TCL_OK; |
---|
2619 | } |
---|
2620 | |
---|
2621 | if (Tcl_IsShared(objv[1])) { |
---|
2622 | Tcl_Obj *resultObj, **dataArray; |
---|
2623 | List *listPtr; |
---|
2624 | |
---|
2625 | makeNewReversedList: |
---|
2626 | resultObj = Tcl_NewListObj(elemc, NULL); |
---|
2627 | listPtr = (List *) resultObj->internalRep.twoPtrValue.ptr1; |
---|
2628 | listPtr->elemCount = elemc; |
---|
2629 | dataArray = &listPtr->elements; |
---|
2630 | |
---|
2631 | for (i=0,j=elemc-1 ; i<elemc ; i++,j--) { |
---|
2632 | dataArray[j] = elemv[i]; |
---|
2633 | Tcl_IncrRefCount(elemv[i]); |
---|
2634 | } |
---|
2635 | |
---|
2636 | Tcl_SetObjResult(interp, resultObj); |
---|
2637 | } else { |
---|
2638 | /* |
---|
2639 | * It is theoretically possible for a list object to have a shared |
---|
2640 | * internal representation, but be an unshared object. Check for this |
---|
2641 | * and use the "shared" code if we have that problem. [Bug 1675044] |
---|
2642 | */ |
---|
2643 | |
---|
2644 | if (((List *) objv[1]->internalRep.twoPtrValue.ptr1)->refCount > 1) { |
---|
2645 | goto makeNewReversedList; |
---|
2646 | } |
---|
2647 | |
---|
2648 | /* |
---|
2649 | * Not shared, so swap "in place". This relies on Tcl_LOGE above |
---|
2650 | * returning a pointer to the live array of Tcl_Obj values. |
---|
2651 | */ |
---|
2652 | |
---|
2653 | for (i=0,j=elemc-1 ; i<j ; i++,j--) { |
---|
2654 | Tcl_Obj *tmp = elemv[i]; |
---|
2655 | |
---|
2656 | elemv[i] = elemv[j]; |
---|
2657 | elemv[j] = tmp; |
---|
2658 | } |
---|
2659 | TclInvalidateStringRep(objv[1]); |
---|
2660 | Tcl_SetObjResult(interp, objv[1]); |
---|
2661 | } |
---|
2662 | return TCL_OK; |
---|
2663 | } |
---|
2664 | |
---|
2665 | /* |
---|
2666 | *---------------------------------------------------------------------- |
---|
2667 | * |
---|
2668 | * Tcl_LsearchObjCmd -- |
---|
2669 | * |
---|
2670 | * This procedure is invoked to process the "lsearch" Tcl command. See |
---|
2671 | * the user documentation for details on what it does. |
---|
2672 | * |
---|
2673 | * Results: |
---|
2674 | * A standard Tcl result. |
---|
2675 | * |
---|
2676 | * Side effects: |
---|
2677 | * See the user documentation. |
---|
2678 | * |
---|
2679 | *---------------------------------------------------------------------- |
---|
2680 | */ |
---|
2681 | |
---|
2682 | int |
---|
2683 | Tcl_LsearchObjCmd( |
---|
2684 | ClientData clientData, /* Not used. */ |
---|
2685 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
2686 | int objc, /* Number of arguments. */ |
---|
2687 | Tcl_Obj *CONST objv[]) /* Argument values. */ |
---|
2688 | { |
---|
2689 | char *bytes, *patternBytes; |
---|
2690 | int i, match, mode, index, result, listc, length, elemLen; |
---|
2691 | int dataType, isIncreasing, lower, upper, patInt, objInt, offset; |
---|
2692 | int allMatches, inlineReturn, negatedMatch, returnSubindices, noCase; |
---|
2693 | double patDouble, objDouble; |
---|
2694 | SortInfo sortInfo; |
---|
2695 | Tcl_Obj *patObj, **listv, *listPtr, *startPtr, *itemPtr; |
---|
2696 | SortStrCmpFn_t strCmpFn = strcmp; |
---|
2697 | Tcl_RegExp regexp = NULL; |
---|
2698 | static CONST char *options[] = { |
---|
2699 | "-all", "-ascii", "-decreasing", "-dictionary", |
---|
2700 | "-exact", "-glob", "-increasing", "-index", |
---|
2701 | "-inline", "-integer", "-nocase", "-not", |
---|
2702 | "-real", "-regexp", "-sorted", "-start", |
---|
2703 | "-subindices", NULL |
---|
2704 | }; |
---|
2705 | enum options { |
---|
2706 | LSEARCH_ALL, LSEARCH_ASCII, LSEARCH_DECREASING, LSEARCH_DICTIONARY, |
---|
2707 | LSEARCH_EXACT, LSEARCH_GLOB, LSEARCH_INCREASING, LSEARCH_INDEX, |
---|
2708 | LSEARCH_INLINE, LSEARCH_INTEGER, LSEARCH_NOCASE, LSEARCH_NOT, |
---|
2709 | LSEARCH_REAL, LSEARCH_REGEXP, LSEARCH_SORTED, LSEARCH_START, |
---|
2710 | LSEARCH_SUBINDICES |
---|
2711 | }; |
---|
2712 | enum datatypes { |
---|
2713 | ASCII, DICTIONARY, INTEGER, REAL |
---|
2714 | }; |
---|
2715 | enum modes { |
---|
2716 | EXACT, GLOB, REGEXP, SORTED |
---|
2717 | }; |
---|
2718 | |
---|
2719 | mode = GLOB; |
---|
2720 | dataType = ASCII; |
---|
2721 | isIncreasing = 1; |
---|
2722 | allMatches = 0; |
---|
2723 | inlineReturn = 0; |
---|
2724 | returnSubindices = 0; |
---|
2725 | negatedMatch = 0; |
---|
2726 | listPtr = NULL; |
---|
2727 | startPtr = NULL; |
---|
2728 | offset = 0; |
---|
2729 | noCase = 0; |
---|
2730 | sortInfo.compareCmdPtr = NULL; |
---|
2731 | sortInfo.isIncreasing = 1; |
---|
2732 | sortInfo.sortMode = 0; |
---|
2733 | sortInfo.interp = interp; |
---|
2734 | sortInfo.resultCode = TCL_OK; |
---|
2735 | sortInfo.indexv = NULL; |
---|
2736 | sortInfo.indexc = 0; |
---|
2737 | |
---|
2738 | if (objc < 3) { |
---|
2739 | Tcl_WrongNumArgs(interp, 1, objv, "?options? list pattern"); |
---|
2740 | return TCL_ERROR; |
---|
2741 | } |
---|
2742 | |
---|
2743 | for (i = 1; i < objc-2; i++) { |
---|
2744 | if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0, &index) |
---|
2745 | != TCL_OK) { |
---|
2746 | if (startPtr != NULL) { |
---|
2747 | Tcl_DecrRefCount(startPtr); |
---|
2748 | } |
---|
2749 | if (sortInfo.indexc > 1) { |
---|
2750 | ckfree((char *) sortInfo.indexv); |
---|
2751 | } |
---|
2752 | return TCL_ERROR; |
---|
2753 | } |
---|
2754 | switch ((enum options) index) { |
---|
2755 | case LSEARCH_ALL: /* -all */ |
---|
2756 | allMatches = 1; |
---|
2757 | break; |
---|
2758 | case LSEARCH_ASCII: /* -ascii */ |
---|
2759 | dataType = ASCII; |
---|
2760 | break; |
---|
2761 | case LSEARCH_DECREASING: /* -decreasing */ |
---|
2762 | isIncreasing = 0; |
---|
2763 | sortInfo.isIncreasing = 0; |
---|
2764 | break; |
---|
2765 | case LSEARCH_DICTIONARY: /* -dictionary */ |
---|
2766 | dataType = DICTIONARY; |
---|
2767 | break; |
---|
2768 | case LSEARCH_EXACT: /* -increasing */ |
---|
2769 | mode = EXACT; |
---|
2770 | break; |
---|
2771 | case LSEARCH_GLOB: /* -glob */ |
---|
2772 | mode = GLOB; |
---|
2773 | break; |
---|
2774 | case LSEARCH_INCREASING: /* -increasing */ |
---|
2775 | isIncreasing = 1; |
---|
2776 | sortInfo.isIncreasing = 1; |
---|
2777 | break; |
---|
2778 | case LSEARCH_INLINE: /* -inline */ |
---|
2779 | inlineReturn = 1; |
---|
2780 | break; |
---|
2781 | case LSEARCH_INTEGER: /* -integer */ |
---|
2782 | dataType = INTEGER; |
---|
2783 | break; |
---|
2784 | case LSEARCH_NOCASE: /* -nocase */ |
---|
2785 | strCmpFn = strcasecmp; |
---|
2786 | noCase = 1; |
---|
2787 | break; |
---|
2788 | case LSEARCH_NOT: /* -not */ |
---|
2789 | negatedMatch = 1; |
---|
2790 | break; |
---|
2791 | case LSEARCH_REAL: /* -real */ |
---|
2792 | dataType = REAL; |
---|
2793 | break; |
---|
2794 | case LSEARCH_REGEXP: /* -regexp */ |
---|
2795 | mode = REGEXP; |
---|
2796 | break; |
---|
2797 | case LSEARCH_SORTED: /* -sorted */ |
---|
2798 | mode = SORTED; |
---|
2799 | break; |
---|
2800 | case LSEARCH_SUBINDICES: /* -subindices */ |
---|
2801 | returnSubindices = 1; |
---|
2802 | break; |
---|
2803 | case LSEARCH_START: /* -start */ |
---|
2804 | /* |
---|
2805 | * If there was a previous -start option, release its saved index |
---|
2806 | * because it will either be replaced or there will be an error. |
---|
2807 | */ |
---|
2808 | |
---|
2809 | if (startPtr != NULL) { |
---|
2810 | Tcl_DecrRefCount(startPtr); |
---|
2811 | } |
---|
2812 | if (i > objc-4) { |
---|
2813 | if (sortInfo.indexc > 1) { |
---|
2814 | ckfree((char *) sortInfo.indexv); |
---|
2815 | } |
---|
2816 | Tcl_AppendResult(interp, "missing starting index", NULL); |
---|
2817 | return TCL_ERROR; |
---|
2818 | } |
---|
2819 | i++; |
---|
2820 | if (objv[i] == objv[objc - 2]) { |
---|
2821 | /* |
---|
2822 | * Take copy to prevent shimmering problems. Note that it does |
---|
2823 | * not matter if the index obj is also a component of the list |
---|
2824 | * being searched. We only need to copy where the list and the |
---|
2825 | * index are one-and-the-same. |
---|
2826 | */ |
---|
2827 | |
---|
2828 | startPtr = Tcl_DuplicateObj(objv[i]); |
---|
2829 | } else { |
---|
2830 | startPtr = objv[i]; |
---|
2831 | Tcl_IncrRefCount(startPtr); |
---|
2832 | } |
---|
2833 | break; |
---|
2834 | case LSEARCH_INDEX: { /* -index */ |
---|
2835 | Tcl_Obj **indices; |
---|
2836 | int j; |
---|
2837 | |
---|
2838 | if (sortInfo.indexc > 1) { |
---|
2839 | ckfree((char *) sortInfo.indexv); |
---|
2840 | } |
---|
2841 | if (i > objc-4) { |
---|
2842 | if (startPtr != NULL) { |
---|
2843 | Tcl_DecrRefCount(startPtr); |
---|
2844 | } |
---|
2845 | Tcl_AppendResult(interp, |
---|
2846 | "\"-index\" option must be followed by list index", |
---|
2847 | NULL); |
---|
2848 | return TCL_ERROR; |
---|
2849 | } |
---|
2850 | |
---|
2851 | /* |
---|
2852 | * Store the extracted indices for processing by sublist |
---|
2853 | * extraction. Note that we don't do this using objects because |
---|
2854 | * that has shimmering problems. |
---|
2855 | */ |
---|
2856 | |
---|
2857 | i++; |
---|
2858 | if (TclListObjGetElements(interp, objv[i], |
---|
2859 | &sortInfo.indexc, &indices) != TCL_OK) { |
---|
2860 | if (startPtr != NULL) { |
---|
2861 | Tcl_DecrRefCount(startPtr); |
---|
2862 | } |
---|
2863 | return TCL_ERROR; |
---|
2864 | } |
---|
2865 | switch (sortInfo.indexc) { |
---|
2866 | case 0: |
---|
2867 | sortInfo.indexv = NULL; |
---|
2868 | break; |
---|
2869 | case 1: |
---|
2870 | sortInfo.indexv = &sortInfo.singleIndex; |
---|
2871 | break; |
---|
2872 | default: |
---|
2873 | sortInfo.indexv = (int *) |
---|
2874 | ckalloc(sizeof(int) * sortInfo.indexc); |
---|
2875 | } |
---|
2876 | |
---|
2877 | /* |
---|
2878 | * Fill the array by parsing each index. We don't know whether |
---|
2879 | * their scale is sensible yet, but we at least perform the |
---|
2880 | * syntactic check here. |
---|
2881 | */ |
---|
2882 | |
---|
2883 | for (j=0 ; j<sortInfo.indexc ; j++) { |
---|
2884 | if (TclGetIntForIndexM(interp, indices[j], SORTIDX_END, |
---|
2885 | &sortInfo.indexv[j]) != TCL_OK) { |
---|
2886 | if (sortInfo.indexc > 1) { |
---|
2887 | ckfree((char *) sortInfo.indexv); |
---|
2888 | } |
---|
2889 | Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( |
---|
2890 | "\n (-index option item number %d)", j)); |
---|
2891 | return TCL_ERROR; |
---|
2892 | } |
---|
2893 | } |
---|
2894 | break; |
---|
2895 | } |
---|
2896 | } |
---|
2897 | } |
---|
2898 | |
---|
2899 | /* |
---|
2900 | * Subindices only make sense if asked for with -index option set. |
---|
2901 | */ |
---|
2902 | |
---|
2903 | if (returnSubindices && sortInfo.indexc==0) { |
---|
2904 | if (startPtr != NULL) { |
---|
2905 | Tcl_DecrRefCount(startPtr); |
---|
2906 | } |
---|
2907 | Tcl_AppendResult(interp, |
---|
2908 | "-subindices cannot be used without -index option", NULL); |
---|
2909 | return TCL_ERROR; |
---|
2910 | } |
---|
2911 | |
---|
2912 | if ((enum modes) mode == REGEXP) { |
---|
2913 | /* |
---|
2914 | * We can shimmer regexp/list if listv[i] == pattern, so get the |
---|
2915 | * regexp rep before the list rep. First time round, omit the interp |
---|
2916 | * and hope that the compilation will succeed. If it fails, we'll |
---|
2917 | * recompile in "expensive" mode with a place to put error messages. |
---|
2918 | */ |
---|
2919 | |
---|
2920 | regexp = Tcl_GetRegExpFromObj(NULL, objv[objc - 1], |
---|
2921 | TCL_REG_ADVANCED | TCL_REG_NOSUB | |
---|
2922 | (noCase ? TCL_REG_NOCASE : 0)); |
---|
2923 | if (regexp == NULL) { |
---|
2924 | /* |
---|
2925 | * Failed to compile the RE. Try again without the TCL_REG_NOSUB |
---|
2926 | * flag in case the RE had sub-expressions in it [Bug 1366683]. If |
---|
2927 | * this fails, an error message will be left in the interpreter. |
---|
2928 | */ |
---|
2929 | |
---|
2930 | regexp = Tcl_GetRegExpFromObj(interp, objv[objc - 1], |
---|
2931 | TCL_REG_ADVANCED | (noCase ? TCL_REG_NOCASE : 0)); |
---|
2932 | } |
---|
2933 | |
---|
2934 | if (regexp == NULL) { |
---|
2935 | if (startPtr != NULL) { |
---|
2936 | Tcl_DecrRefCount(startPtr); |
---|
2937 | } |
---|
2938 | if (sortInfo.indexc > 1) { |
---|
2939 | ckfree((char *) sortInfo.indexv); |
---|
2940 | } |
---|
2941 | return TCL_ERROR; |
---|
2942 | } |
---|
2943 | } |
---|
2944 | |
---|
2945 | /* |
---|
2946 | * Make sure the list argument is a list object and get its length and a |
---|
2947 | * pointer to its array of element pointers. |
---|
2948 | */ |
---|
2949 | |
---|
2950 | result = TclListObjGetElements(interp, objv[objc - 2], &listc, &listv); |
---|
2951 | if (result != TCL_OK) { |
---|
2952 | if (startPtr != NULL) { |
---|
2953 | Tcl_DecrRefCount(startPtr); |
---|
2954 | } |
---|
2955 | if (sortInfo.indexc > 1) { |
---|
2956 | ckfree((char *) sortInfo.indexv); |
---|
2957 | } |
---|
2958 | return result; |
---|
2959 | } |
---|
2960 | |
---|
2961 | /* |
---|
2962 | * Get the user-specified start offset. |
---|
2963 | */ |
---|
2964 | |
---|
2965 | if (startPtr) { |
---|
2966 | result = TclGetIntForIndexM(interp, startPtr, listc-1, &offset); |
---|
2967 | Tcl_DecrRefCount(startPtr); |
---|
2968 | if (result != TCL_OK) { |
---|
2969 | if (sortInfo.indexc > 1) { |
---|
2970 | ckfree((char *) sortInfo.indexv); |
---|
2971 | } |
---|
2972 | return result; |
---|
2973 | } |
---|
2974 | if (offset < 0) { |
---|
2975 | offset = 0; |
---|
2976 | } |
---|
2977 | |
---|
2978 | /* |
---|
2979 | * If the search started past the end of the list, we just return a |
---|
2980 | * "did not match anything at all" result straight away. [Bug 1374778] |
---|
2981 | */ |
---|
2982 | |
---|
2983 | if (offset > listc-1) { |
---|
2984 | if (sortInfo.indexc > 1) { |
---|
2985 | ckfree((char *) sortInfo.indexv); |
---|
2986 | } |
---|
2987 | if (allMatches || inlineReturn) { |
---|
2988 | Tcl_ResetResult(interp); |
---|
2989 | } else { |
---|
2990 | Tcl_SetObjResult(interp, Tcl_NewIntObj(-1)); |
---|
2991 | } |
---|
2992 | return TCL_OK; |
---|
2993 | } |
---|
2994 | } |
---|
2995 | |
---|
2996 | patObj = objv[objc - 1]; |
---|
2997 | patternBytes = NULL; |
---|
2998 | if ((enum modes) mode == EXACT || (enum modes) mode == SORTED) { |
---|
2999 | switch ((enum datatypes) dataType) { |
---|
3000 | case ASCII: |
---|
3001 | case DICTIONARY: |
---|
3002 | patternBytes = TclGetStringFromObj(patObj, &length); |
---|
3003 | break; |
---|
3004 | case INTEGER: |
---|
3005 | result = TclGetIntFromObj(interp, patObj, &patInt); |
---|
3006 | if (result != TCL_OK) { |
---|
3007 | if (sortInfo.indexc > 1) { |
---|
3008 | ckfree((char *) sortInfo.indexv); |
---|
3009 | } |
---|
3010 | return result; |
---|
3011 | } |
---|
3012 | |
---|
3013 | /* |
---|
3014 | * List representation might have been shimmered; restore it. [Bug |
---|
3015 | * 1844789] |
---|
3016 | */ |
---|
3017 | |
---|
3018 | TclListObjGetElements(NULL, objv[objc - 2], &listc, &listv); |
---|
3019 | break; |
---|
3020 | case REAL: |
---|
3021 | result = Tcl_GetDoubleFromObj(interp, patObj, &patDouble); |
---|
3022 | if (result != TCL_OK) { |
---|
3023 | if (sortInfo.indexc > 1) { |
---|
3024 | ckfree((char *) sortInfo.indexv); |
---|
3025 | } |
---|
3026 | return result; |
---|
3027 | } |
---|
3028 | |
---|
3029 | /* |
---|
3030 | * List representation might have been shimmered; restore it. [Bug |
---|
3031 | * 1844789] |
---|
3032 | */ |
---|
3033 | |
---|
3034 | TclListObjGetElements(NULL, objv[objc - 2], &listc, &listv); |
---|
3035 | break; |
---|
3036 | } |
---|
3037 | } else { |
---|
3038 | patternBytes = TclGetStringFromObj(patObj, &length); |
---|
3039 | } |
---|
3040 | |
---|
3041 | /* |
---|
3042 | * Set default index value to -1, indicating failure; if we find the item |
---|
3043 | * in the course of our search, index will be set to the correct value. |
---|
3044 | */ |
---|
3045 | |
---|
3046 | index = -1; |
---|
3047 | match = 0; |
---|
3048 | |
---|
3049 | if ((enum modes) mode == SORTED && !allMatches && !negatedMatch) { |
---|
3050 | /* |
---|
3051 | * If the data is sorted, we can do a more intelligent search. Note |
---|
3052 | * that there is no point in being smart when -all was specified; in |
---|
3053 | * that case, we have to look at all items anyway, and there is no |
---|
3054 | * sense in doing this when the match sense is inverted. |
---|
3055 | */ |
---|
3056 | |
---|
3057 | lower = offset - 1; |
---|
3058 | upper = listc; |
---|
3059 | while (lower + 1 != upper && sortInfo.resultCode == TCL_OK) { |
---|
3060 | i = (lower + upper)/2; |
---|
3061 | if (sortInfo.indexc != 0) { |
---|
3062 | itemPtr = SelectObjFromSublist(listv[i], &sortInfo); |
---|
3063 | if (sortInfo.resultCode != TCL_OK) { |
---|
3064 | if (sortInfo.indexc > 1) { |
---|
3065 | ckfree((char *) sortInfo.indexv); |
---|
3066 | } |
---|
3067 | return sortInfo.resultCode; |
---|
3068 | } |
---|
3069 | } else { |
---|
3070 | itemPtr = listv[i]; |
---|
3071 | } |
---|
3072 | switch ((enum datatypes) dataType) { |
---|
3073 | case ASCII: |
---|
3074 | bytes = TclGetString(itemPtr); |
---|
3075 | match = strCmpFn(patternBytes, bytes); |
---|
3076 | break; |
---|
3077 | case DICTIONARY: |
---|
3078 | bytes = TclGetString(itemPtr); |
---|
3079 | match = DictionaryCompare(patternBytes, bytes); |
---|
3080 | break; |
---|
3081 | case INTEGER: |
---|
3082 | result = TclGetIntFromObj(interp, itemPtr, &objInt); |
---|
3083 | if (result != TCL_OK) { |
---|
3084 | if (sortInfo.indexc > 1) { |
---|
3085 | ckfree((char *) sortInfo.indexv); |
---|
3086 | } |
---|
3087 | return result; |
---|
3088 | } |
---|
3089 | if (patInt == objInt) { |
---|
3090 | match = 0; |
---|
3091 | } else if (patInt < objInt) { |
---|
3092 | match = -1; |
---|
3093 | } else { |
---|
3094 | match = 1; |
---|
3095 | } |
---|
3096 | break; |
---|
3097 | case REAL: |
---|
3098 | result = Tcl_GetDoubleFromObj(interp, itemPtr, &objDouble); |
---|
3099 | if (result != TCL_OK) { |
---|
3100 | if (sortInfo.indexc > 1) { |
---|
3101 | ckfree((char *) sortInfo.indexv); |
---|
3102 | } |
---|
3103 | return result; |
---|
3104 | } |
---|
3105 | if (patDouble == objDouble) { |
---|
3106 | match = 0; |
---|
3107 | } else if (patDouble < objDouble) { |
---|
3108 | match = -1; |
---|
3109 | } else { |
---|
3110 | match = 1; |
---|
3111 | } |
---|
3112 | break; |
---|
3113 | } |
---|
3114 | if (match == 0) { |
---|
3115 | /* |
---|
3116 | * Normally, binary search is written to stop when it finds a |
---|
3117 | * match. If there are duplicates of an element in the list, |
---|
3118 | * our first match might not be the first occurance. |
---|
3119 | * Consider: 0 0 0 1 1 1 2 2 2 |
---|
3120 | * |
---|
3121 | * To maintain consistancy with standard lsearch semantics, we |
---|
3122 | * must find the leftmost occurance of the pattern in the |
---|
3123 | * list. Thus we don't just stop searching here. This |
---|
3124 | * variation means that a search always makes log n |
---|
3125 | * comparisons (normal binary search might "get lucky" with an |
---|
3126 | * early comparison). |
---|
3127 | */ |
---|
3128 | |
---|
3129 | index = i; |
---|
3130 | upper = i; |
---|
3131 | } else if (match > 0) { |
---|
3132 | if (isIncreasing) { |
---|
3133 | lower = i; |
---|
3134 | } else { |
---|
3135 | upper = i; |
---|
3136 | } |
---|
3137 | } else { |
---|
3138 | if (isIncreasing) { |
---|
3139 | upper = i; |
---|
3140 | } else { |
---|
3141 | lower = i; |
---|
3142 | } |
---|
3143 | } |
---|
3144 | } |
---|
3145 | |
---|
3146 | } else { |
---|
3147 | /* |
---|
3148 | * We need to do a linear search, because (at least one) of: |
---|
3149 | * - our matcher can only tell equal vs. not equal |
---|
3150 | * - our matching sense is negated |
---|
3151 | * - we're building a list of all matched items |
---|
3152 | */ |
---|
3153 | |
---|
3154 | if (allMatches) { |
---|
3155 | listPtr = Tcl_NewListObj(0, NULL); |
---|
3156 | } |
---|
3157 | for (i = offset; i < listc; i++) { |
---|
3158 | match = 0; |
---|
3159 | if (sortInfo.indexc != 0) { |
---|
3160 | itemPtr = SelectObjFromSublist(listv[i], &sortInfo); |
---|
3161 | if (sortInfo.resultCode != TCL_OK) { |
---|
3162 | if (listPtr != NULL) { |
---|
3163 | Tcl_DecrRefCount(listPtr); |
---|
3164 | } |
---|
3165 | if (sortInfo.indexc > 1) { |
---|
3166 | ckfree((char *) sortInfo.indexv); |
---|
3167 | } |
---|
3168 | return sortInfo.resultCode; |
---|
3169 | } |
---|
3170 | } else { |
---|
3171 | itemPtr = listv[i]; |
---|
3172 | } |
---|
3173 | |
---|
3174 | switch ((enum modes) mode) { |
---|
3175 | case SORTED: |
---|
3176 | case EXACT: |
---|
3177 | switch ((enum datatypes) dataType) { |
---|
3178 | case ASCII: |
---|
3179 | bytes = TclGetStringFromObj(itemPtr, &elemLen); |
---|
3180 | if (length == elemLen) { |
---|
3181 | /* |
---|
3182 | * This split allows for more optimal compilation of |
---|
3183 | * memcmp/strcasecmp. |
---|
3184 | */ |
---|
3185 | |
---|
3186 | if (noCase) { |
---|
3187 | match = (strcasecmp(bytes, patternBytes) == 0); |
---|
3188 | } else { |
---|
3189 | match = (memcmp(bytes, patternBytes, |
---|
3190 | (size_t) length) == 0); |
---|
3191 | } |
---|
3192 | } |
---|
3193 | break; |
---|
3194 | |
---|
3195 | case DICTIONARY: |
---|
3196 | bytes = TclGetString(itemPtr); |
---|
3197 | match = (DictionaryCompare(bytes, patternBytes) == 0); |
---|
3198 | break; |
---|
3199 | |
---|
3200 | case INTEGER: |
---|
3201 | result = TclGetIntFromObj(interp, itemPtr, &objInt); |
---|
3202 | if (result != TCL_OK) { |
---|
3203 | if (listPtr != NULL) { |
---|
3204 | Tcl_DecrRefCount(listPtr); |
---|
3205 | } |
---|
3206 | if (sortInfo.indexc > 1) { |
---|
3207 | ckfree((char *) sortInfo.indexv); |
---|
3208 | } |
---|
3209 | return result; |
---|
3210 | } |
---|
3211 | match = (objInt == patInt); |
---|
3212 | break; |
---|
3213 | |
---|
3214 | case REAL: |
---|
3215 | result = Tcl_GetDoubleFromObj(interp,itemPtr, &objDouble); |
---|
3216 | if (result != TCL_OK) { |
---|
3217 | if (listPtr) { |
---|
3218 | Tcl_DecrRefCount(listPtr); |
---|
3219 | } |
---|
3220 | if (sortInfo.indexc > 1) { |
---|
3221 | ckfree((char *) sortInfo.indexv); |
---|
3222 | } |
---|
3223 | return result; |
---|
3224 | } |
---|
3225 | match = (objDouble == patDouble); |
---|
3226 | break; |
---|
3227 | } |
---|
3228 | break; |
---|
3229 | |
---|
3230 | case GLOB: |
---|
3231 | match = Tcl_StringCaseMatch(TclGetString(itemPtr), |
---|
3232 | patternBytes, noCase); |
---|
3233 | break; |
---|
3234 | |
---|
3235 | case REGEXP: |
---|
3236 | match = Tcl_RegExpExecObj(interp, regexp, itemPtr, 0, 0, 0); |
---|
3237 | if (match < 0) { |
---|
3238 | Tcl_DecrRefCount(patObj); |
---|
3239 | if (listPtr != NULL) { |
---|
3240 | Tcl_DecrRefCount(listPtr); |
---|
3241 | } |
---|
3242 | if (sortInfo.indexc > 1) { |
---|
3243 | ckfree((char *) sortInfo.indexv); |
---|
3244 | } |
---|
3245 | return TCL_ERROR; |
---|
3246 | } |
---|
3247 | break; |
---|
3248 | } |
---|
3249 | |
---|
3250 | /* |
---|
3251 | * Invert match condition for -not. |
---|
3252 | */ |
---|
3253 | |
---|
3254 | if (negatedMatch) { |
---|
3255 | match = !match; |
---|
3256 | } |
---|
3257 | if (!match) { |
---|
3258 | continue; |
---|
3259 | } |
---|
3260 | if (!allMatches) { |
---|
3261 | index = i; |
---|
3262 | break; |
---|
3263 | } else if (inlineReturn) { |
---|
3264 | /* |
---|
3265 | * Note that these appends are not expected to fail. |
---|
3266 | */ |
---|
3267 | |
---|
3268 | if (returnSubindices && (sortInfo.indexc != 0)) { |
---|
3269 | itemPtr = SelectObjFromSublist(listv[i], &sortInfo); |
---|
3270 | } else { |
---|
3271 | itemPtr = listv[i]; |
---|
3272 | } |
---|
3273 | Tcl_ListObjAppendElement(interp, listPtr, itemPtr); |
---|
3274 | } else if (returnSubindices) { |
---|
3275 | int j; |
---|
3276 | |
---|
3277 | itemPtr = Tcl_NewIntObj(i); |
---|
3278 | for (j=0 ; j<sortInfo.indexc ; j++) { |
---|
3279 | Tcl_ListObjAppendElement(interp, itemPtr, |
---|
3280 | Tcl_NewIntObj(sortInfo.indexv[j])); |
---|
3281 | } |
---|
3282 | Tcl_ListObjAppendElement(interp, listPtr, itemPtr); |
---|
3283 | } else { |
---|
3284 | Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewIntObj(i)); |
---|
3285 | } |
---|
3286 | } |
---|
3287 | } |
---|
3288 | |
---|
3289 | /* |
---|
3290 | * Return everything or a single value. |
---|
3291 | */ |
---|
3292 | |
---|
3293 | if (allMatches) { |
---|
3294 | Tcl_SetObjResult(interp, listPtr); |
---|
3295 | } else if (!inlineReturn) { |
---|
3296 | if (returnSubindices) { |
---|
3297 | int j; |
---|
3298 | |
---|
3299 | itemPtr = Tcl_NewIntObj(index); |
---|
3300 | for (j=0 ; j<sortInfo.indexc ; j++) { |
---|
3301 | Tcl_ListObjAppendElement(interp, itemPtr, |
---|
3302 | Tcl_NewIntObj(sortInfo.indexv[j])); |
---|
3303 | } |
---|
3304 | Tcl_SetObjResult(interp, itemPtr); |
---|
3305 | } else { |
---|
3306 | Tcl_SetObjResult(interp, Tcl_NewIntObj(index)); |
---|
3307 | } |
---|
3308 | } else if (index < 0) { |
---|
3309 | /* |
---|
3310 | * Is this superfluous? The result should be a blank object by |
---|
3311 | * default... |
---|
3312 | */ |
---|
3313 | |
---|
3314 | Tcl_SetObjResult(interp, Tcl_NewObj()); |
---|
3315 | } else { |
---|
3316 | Tcl_SetObjResult(interp, listv[index]); |
---|
3317 | } |
---|
3318 | |
---|
3319 | /* |
---|
3320 | * Cleanup the index list array. |
---|
3321 | */ |
---|
3322 | |
---|
3323 | if (sortInfo.indexc > 1) { |
---|
3324 | ckfree((char *) sortInfo.indexv); |
---|
3325 | } |
---|
3326 | return TCL_OK; |
---|
3327 | } |
---|
3328 | |
---|
3329 | /* |
---|
3330 | *---------------------------------------------------------------------- |
---|
3331 | * |
---|
3332 | * Tcl_LsetObjCmd -- |
---|
3333 | * |
---|
3334 | * This procedure is invoked to process the "lset" Tcl command. See the |
---|
3335 | * user documentation for details on what it does. |
---|
3336 | * |
---|
3337 | * Results: |
---|
3338 | * A standard Tcl result. |
---|
3339 | * |
---|
3340 | * Side effects: |
---|
3341 | * See the user documentation. |
---|
3342 | * |
---|
3343 | *---------------------------------------------------------------------- |
---|
3344 | */ |
---|
3345 | |
---|
3346 | int |
---|
3347 | Tcl_LsetObjCmd( |
---|
3348 | ClientData clientData, /* Not used. */ |
---|
3349 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
3350 | int objc, /* Number of arguments. */ |
---|
3351 | Tcl_Obj *CONST objv[]) /* Argument values. */ |
---|
3352 | { |
---|
3353 | Tcl_Obj *listPtr; /* Pointer to the list being altered. */ |
---|
3354 | Tcl_Obj *finalValuePtr; /* Value finally assigned to the variable. */ |
---|
3355 | |
---|
3356 | /* |
---|
3357 | * Check parameter count. |
---|
3358 | */ |
---|
3359 | |
---|
3360 | if (objc < 3) { |
---|
3361 | Tcl_WrongNumArgs(interp, 1, objv, "listVar index ?index...? value"); |
---|
3362 | return TCL_ERROR; |
---|
3363 | } |
---|
3364 | |
---|
3365 | /* |
---|
3366 | * Look up the list variable's value. |
---|
3367 | */ |
---|
3368 | |
---|
3369 | listPtr = Tcl_ObjGetVar2(interp, objv[1], (Tcl_Obj *) NULL, |
---|
3370 | TCL_LEAVE_ERR_MSG); |
---|
3371 | if (listPtr == NULL) { |
---|
3372 | return TCL_ERROR; |
---|
3373 | } |
---|
3374 | |
---|
3375 | /* |
---|
3376 | * Substitute the value in the value. Return either the value or else an |
---|
3377 | * unshared copy of it. |
---|
3378 | */ |
---|
3379 | |
---|
3380 | if (objc == 4) { |
---|
3381 | finalValuePtr = TclLsetList(interp, listPtr, objv[2], objv[3]); |
---|
3382 | } else { |
---|
3383 | finalValuePtr = TclLsetFlat(interp, listPtr, objc-3, objv+2, |
---|
3384 | objv[objc-1]); |
---|
3385 | } |
---|
3386 | |
---|
3387 | /* |
---|
3388 | * If substitution has failed, bail out. |
---|
3389 | */ |
---|
3390 | |
---|
3391 | if (finalValuePtr == NULL) { |
---|
3392 | return TCL_ERROR; |
---|
3393 | } |
---|
3394 | |
---|
3395 | /* |
---|
3396 | * Finally, update the variable so that traces fire. |
---|
3397 | */ |
---|
3398 | |
---|
3399 | listPtr = Tcl_ObjSetVar2(interp, objv[1], NULL, finalValuePtr, |
---|
3400 | TCL_LEAVE_ERR_MSG); |
---|
3401 | Tcl_DecrRefCount(finalValuePtr); |
---|
3402 | if (listPtr == NULL) { |
---|
3403 | return TCL_ERROR; |
---|
3404 | } |
---|
3405 | |
---|
3406 | /* |
---|
3407 | * Return the new value of the variable as the interpreter result. |
---|
3408 | */ |
---|
3409 | |
---|
3410 | Tcl_SetObjResult(interp, listPtr); |
---|
3411 | return TCL_OK; |
---|
3412 | } |
---|
3413 | |
---|
3414 | /* |
---|
3415 | *---------------------------------------------------------------------- |
---|
3416 | * |
---|
3417 | * Tcl_LsortObjCmd -- |
---|
3418 | * |
---|
3419 | * This procedure is invoked to process the "lsort" Tcl command. See the |
---|
3420 | * user documentation for details on what it does. |
---|
3421 | * |
---|
3422 | * Results: |
---|
3423 | * A standard Tcl result. |
---|
3424 | * |
---|
3425 | * Side effects: |
---|
3426 | * See the user documentation. |
---|
3427 | * |
---|
3428 | *---------------------------------------------------------------------- |
---|
3429 | */ |
---|
3430 | |
---|
3431 | int |
---|
3432 | Tcl_LsortObjCmd( |
---|
3433 | ClientData clientData, /* Not used. */ |
---|
3434 | Tcl_Interp *interp, /* Current interpreter. */ |
---|
3435 | int objc, /* Number of arguments. */ |
---|
3436 | Tcl_Obj *CONST objv[]) /* Argument values. */ |
---|
3437 | { |
---|
3438 | int i, j, index, unique, indices, length, nocase = 0, sortMode, indexc; |
---|
3439 | Tcl_Obj *resultPtr, *cmdPtr, **listObjPtrs, *listObj, *indexPtr; |
---|
3440 | SortElement *elementArray, *elementPtr; |
---|
3441 | SortInfo sortInfo; /* Information about this sort that needs to |
---|
3442 | * be passed to the comparison function. */ |
---|
3443 | static CONST char *switches[] = { |
---|
3444 | "-ascii", "-command", "-decreasing", "-dictionary", "-increasing", |
---|
3445 | "-index", "-indices", "-integer", "-nocase", "-real", "-unique", NULL |
---|
3446 | }; |
---|
3447 | enum Lsort_Switches { |
---|
3448 | LSORT_ASCII, LSORT_COMMAND, LSORT_DECREASING, LSORT_DICTIONARY, |
---|
3449 | LSORT_INCREASING, LSORT_INDEX, LSORT_INDICES, LSORT_INTEGER, |
---|
3450 | LSORT_NOCASE, LSORT_REAL, LSORT_UNIQUE |
---|
3451 | }; |
---|
3452 | |
---|
3453 | /* |
---|
3454 | * The subList array below holds pointers to temporary lists built during |
---|
3455 | * the merge sort. Element i of the array holds a list of length 2**i. |
---|
3456 | */ |
---|
3457 | # define NUM_LISTS 30 |
---|
3458 | SortElement *subList[NUM_LISTS+1]; |
---|
3459 | |
---|
3460 | if (objc < 2) { |
---|
3461 | Tcl_WrongNumArgs(interp, 1, objv, "?options? list"); |
---|
3462 | return TCL_ERROR; |
---|
3463 | } |
---|
3464 | |
---|
3465 | /* |
---|
3466 | * Parse arguments to set up the mode for the sort. |
---|
3467 | */ |
---|
3468 | |
---|
3469 | sortInfo.isIncreasing = 1; |
---|
3470 | sortInfo.sortMode = SORTMODE_ASCII; |
---|
3471 | sortInfo.indexv = NULL; |
---|
3472 | sortInfo.indexc = 0; |
---|
3473 | sortInfo.unique = 0; |
---|
3474 | sortInfo.interp = interp; |
---|
3475 | sortInfo.resultCode = TCL_OK; |
---|
3476 | cmdPtr = NULL; |
---|
3477 | unique = 0; |
---|
3478 | indices = 0; |
---|
3479 | for (i = 1; i < objc-1; i++) { |
---|
3480 | if (Tcl_GetIndexFromObj(interp, objv[i], switches, "option", 0, |
---|
3481 | &index) != TCL_OK) { |
---|
3482 | return TCL_ERROR; |
---|
3483 | } |
---|
3484 | switch ((enum Lsort_Switches) index) { |
---|
3485 | case LSORT_ASCII: |
---|
3486 | sortInfo.sortMode = SORTMODE_ASCII; |
---|
3487 | break; |
---|
3488 | case LSORT_COMMAND: |
---|
3489 | if (i == (objc-2)) { |
---|
3490 | if (sortInfo.indexc > 1) { |
---|
3491 | ckfree((char *) sortInfo.indexv); |
---|
3492 | } |
---|
3493 | Tcl_AppendResult(interp, |
---|
3494 | "\"-command\" option must be followed " |
---|
3495 | "by comparison command", NULL); |
---|
3496 | return TCL_ERROR; |
---|
3497 | } |
---|
3498 | sortInfo.sortMode = SORTMODE_COMMAND; |
---|
3499 | cmdPtr = objv[i+1]; |
---|
3500 | i++; |
---|
3501 | break; |
---|
3502 | case LSORT_DECREASING: |
---|
3503 | sortInfo.isIncreasing = 0; |
---|
3504 | break; |
---|
3505 | case LSORT_DICTIONARY: |
---|
3506 | sortInfo.sortMode = SORTMODE_DICTIONARY; |
---|
3507 | break; |
---|
3508 | case LSORT_INCREASING: |
---|
3509 | sortInfo.isIncreasing = 1; |
---|
3510 | break; |
---|
3511 | case LSORT_INDEX: { |
---|
3512 | Tcl_Obj **indices; |
---|
3513 | |
---|
3514 | if (sortInfo.indexc > 1) { |
---|
3515 | ckfree((char *) sortInfo.indexv); |
---|
3516 | } |
---|
3517 | if (i == (objc-2)) { |
---|
3518 | Tcl_AppendResult(interp, "\"-index\" option must be " |
---|
3519 | "followed by list index", NULL); |
---|
3520 | return TCL_ERROR; |
---|
3521 | } |
---|
3522 | |
---|
3523 | /* |
---|
3524 | * Take copy to prevent shimmering problems. |
---|
3525 | */ |
---|
3526 | |
---|
3527 | if (TclListObjGetElements(interp, objv[i+1], &sortInfo.indexc, |
---|
3528 | &indices) != TCL_OK) { |
---|
3529 | return TCL_ERROR; |
---|
3530 | } |
---|
3531 | switch (sortInfo.indexc) { |
---|
3532 | case 0: |
---|
3533 | sortInfo.indexv = NULL; |
---|
3534 | break; |
---|
3535 | case 1: |
---|
3536 | sortInfo.indexv = &sortInfo.singleIndex; |
---|
3537 | break; |
---|
3538 | default: |
---|
3539 | sortInfo.indexv = (int *) |
---|
3540 | ckalloc(sizeof(int) * sortInfo.indexc); |
---|
3541 | } |
---|
3542 | |
---|
3543 | /* |
---|
3544 | * Fill the array by parsing each index. We don't know whether |
---|
3545 | * their scale is sensible yet, but we at least perform the |
---|
3546 | * syntactic check here. |
---|
3547 | */ |
---|
3548 | |
---|
3549 | for (j=0 ; j<sortInfo.indexc ; j++) { |
---|
3550 | if (TclGetIntForIndexM(interp, indices[j], SORTIDX_END, |
---|
3551 | &sortInfo.indexv[j]) != TCL_OK) { |
---|
3552 | if (sortInfo.indexc > 1) { |
---|
3553 | ckfree((char *) sortInfo.indexv); |
---|
3554 | } |
---|
3555 | Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( |
---|
3556 | "\n (-index option item number %d)", j)); |
---|
3557 | return TCL_ERROR; |
---|
3558 | } |
---|
3559 | } |
---|
3560 | i++; |
---|
3561 | break; |
---|
3562 | } |
---|
3563 | case LSORT_INTEGER: |
---|
3564 | sortInfo.sortMode = SORTMODE_INTEGER; |
---|
3565 | break; |
---|
3566 | case LSORT_NOCASE: |
---|
3567 | nocase = 1; |
---|
3568 | break; |
---|
3569 | case LSORT_REAL: |
---|
3570 | sortInfo.sortMode = SORTMODE_REAL; |
---|
3571 | break; |
---|
3572 | case LSORT_UNIQUE: |
---|
3573 | unique = 1; |
---|
3574 | sortInfo.unique = 1; |
---|
3575 | break; |
---|
3576 | case LSORT_INDICES: |
---|
3577 | indices = 1; |
---|
3578 | break; |
---|
3579 | } |
---|
3580 | } |
---|
3581 | if (nocase && (sortInfo.sortMode == SORTMODE_ASCII)) { |
---|
3582 | sortInfo.sortMode = SORTMODE_ASCII_NC; |
---|
3583 | } |
---|
3584 | |
---|
3585 | listObj = objv[objc-1]; |
---|
3586 | |
---|
3587 | if (sortInfo.sortMode == SORTMODE_COMMAND) { |
---|
3588 | Tcl_Obj *newCommandPtr, *newObjPtr; |
---|
3589 | |
---|
3590 | /* |
---|
3591 | * When sorting using a command, we are reentrant and therefore might |
---|
3592 | * have the representation of the list being sorted shimmered out from |
---|
3593 | * underneath our feet. Take a copy (cheap) to prevent this. [Bug |
---|
3594 | * 1675116] |
---|
3595 | */ |
---|
3596 | |
---|
3597 | listObj = TclListObjCopy(interp, listObj); |
---|
3598 | if (listObj == NULL) { |
---|
3599 | if (sortInfo.indexc > 1) { |
---|
3600 | ckfree((char *) sortInfo.indexv); |
---|
3601 | } |
---|
3602 | return TCL_ERROR; |
---|
3603 | } |
---|
3604 | |
---|
3605 | /* |
---|
3606 | * The existing command is a list. We want to flatten it, append two |
---|
3607 | * dummy arguments on the end, and replace these arguments later. |
---|
3608 | */ |
---|
3609 | |
---|
3610 | newCommandPtr = Tcl_DuplicateObj(cmdPtr); |
---|
3611 | TclNewObj(newObjPtr); |
---|
3612 | Tcl_IncrRefCount(newCommandPtr); |
---|
3613 | if (Tcl_ListObjAppendElement(interp, newCommandPtr, newObjPtr) |
---|
3614 | != TCL_OK) { |
---|
3615 | TclDecrRefCount(newCommandPtr); |
---|
3616 | TclDecrRefCount(listObj); |
---|
3617 | Tcl_IncrRefCount(newObjPtr); |
---|
3618 | TclDecrRefCount(newObjPtr); |
---|
3619 | if (sortInfo.indexc > 1) { |
---|
3620 | ckfree((char *) sortInfo.indexv); |
---|
3621 | } |
---|
3622 | return TCL_ERROR; |
---|
3623 | } |
---|
3624 | Tcl_ListObjAppendElement(interp, newCommandPtr, Tcl_NewObj()); |
---|
3625 | sortInfo.compareCmdPtr = newCommandPtr; |
---|
3626 | } |
---|
3627 | |
---|
3628 | sortInfo.resultCode = TclListObjGetElements(interp, listObj, |
---|
3629 | &length, &listObjPtrs); |
---|
3630 | if (sortInfo.resultCode != TCL_OK || length <= 0) { |
---|
3631 | goto done; |
---|
3632 | } |
---|
3633 | sortInfo.numElements = length; |
---|
3634 | |
---|
3635 | indexc = sortInfo.indexc; |
---|
3636 | sortMode = sortInfo.sortMode; |
---|
3637 | if ((sortMode == SORTMODE_ASCII_NC) |
---|
3638 | || (sortMode == SORTMODE_DICTIONARY)) { |
---|
3639 | /* |
---|
3640 | * For this function's purpose all string-based modes are equivalent |
---|
3641 | */ |
---|
3642 | |
---|
3643 | sortMode = SORTMODE_ASCII; |
---|
3644 | } |
---|
3645 | |
---|
3646 | /* |
---|
3647 | * Initialize the sublists. After the following loop, subList[i] will |
---|
3648 | * contain a sorted sublist of length 2**i. Use one extra subList at the |
---|
3649 | * end, always at NULL, to indicate the end of the lists. |
---|
3650 | */ |
---|
3651 | |
---|
3652 | for (j=0 ; j<=NUM_LISTS ; j++) { |
---|
3653 | subList[j] = NULL; |
---|
3654 | } |
---|
3655 | |
---|
3656 | /* |
---|
3657 | * The following loop creates a SortElement for each list element and |
---|
3658 | * begins sorting it into the sublists as it appears. |
---|
3659 | */ |
---|
3660 | |
---|
3661 | elementArray = (SortElement *) ckalloc( length * sizeof(SortElement)); |
---|
3662 | |
---|
3663 | for (i=0; i < length; i++){ |
---|
3664 | if (indexc) { |
---|
3665 | /* |
---|
3666 | * If this is an indexed sort, retrieve the corresponding element |
---|
3667 | */ |
---|
3668 | indexPtr = SelectObjFromSublist(listObjPtrs[i], &sortInfo); |
---|
3669 | if (sortInfo.resultCode != TCL_OK) { |
---|
3670 | goto done1; |
---|
3671 | } |
---|
3672 | } else { |
---|
3673 | indexPtr = listObjPtrs[i]; |
---|
3674 | } |
---|
3675 | |
---|
3676 | /* |
---|
3677 | * Determine the "value" of this object for sorting purposes |
---|
3678 | */ |
---|
3679 | |
---|
3680 | if (sortMode == SORTMODE_ASCII) { |
---|
3681 | elementArray[i].index.strValuePtr = TclGetString(indexPtr); |
---|
3682 | } else if (sortMode == SORTMODE_INTEGER) { |
---|
3683 | long a; |
---|
3684 | if (TclGetLongFromObj(sortInfo.interp, indexPtr, &a) != TCL_OK) { |
---|
3685 | sortInfo.resultCode = TCL_ERROR; |
---|
3686 | goto done1; |
---|
3687 | } |
---|
3688 | elementArray[i].index.intValue = a; |
---|
3689 | } else if (sortInfo.sortMode == SORTMODE_REAL) { |
---|
3690 | double a; |
---|
3691 | if (Tcl_GetDoubleFromObj(sortInfo.interp, indexPtr, &a) != TCL_OK) { |
---|
3692 | sortInfo.resultCode = TCL_ERROR; |
---|
3693 | goto done1; |
---|
3694 | } |
---|
3695 | elementArray[i].index.doubleValue = a; |
---|
3696 | } else { |
---|
3697 | elementArray[i].index.objValuePtr = indexPtr; |
---|
3698 | } |
---|
3699 | |
---|
3700 | /* |
---|
3701 | * Determine the representation of this element in the result: either |
---|
3702 | * the objPtr itself, or its index in the original list. |
---|
3703 | */ |
---|
3704 | |
---|
3705 | elementArray[i].objPtr = (indices ? INT2PTR(i) : listObjPtrs[i]); |
---|
3706 | |
---|
3707 | /* |
---|
3708 | * Merge this element in the pre-existing sublists (and merge together |
---|
3709 | * sublists when we have two of the same size). |
---|
3710 | */ |
---|
3711 | |
---|
3712 | elementArray[i].nextPtr = NULL; |
---|
3713 | elementPtr = &elementArray[i]; |
---|
3714 | for (j=0 ; subList[j] ; j++) { |
---|
3715 | elementPtr = MergeLists(subList[j], elementPtr, &sortInfo); |
---|
3716 | subList[j] = NULL; |
---|
3717 | } |
---|
3718 | if (j >= NUM_LISTS) { |
---|
3719 | j = NUM_LISTS-1; |
---|
3720 | } |
---|
3721 | subList[j] = elementPtr; |
---|
3722 | } |
---|
3723 | |
---|
3724 | /* |
---|
3725 | * Merge all sublists |
---|
3726 | */ |
---|
3727 | |
---|
3728 | elementPtr = subList[0]; |
---|
3729 | for (j=1 ; j<NUM_LISTS ; j++) { |
---|
3730 | elementPtr = MergeLists(subList[j], elementPtr, &sortInfo); |
---|
3731 | } |
---|
3732 | |
---|
3733 | |
---|
3734 | /* |
---|
3735 | * Now store the sorted elements in the result list. |
---|
3736 | */ |
---|
3737 | |
---|
3738 | if (sortInfo.resultCode == TCL_OK) { |
---|
3739 | List *listRepPtr; |
---|
3740 | Tcl_Obj **newArray, *objPtr; |
---|
3741 | int i; |
---|
3742 | |
---|
3743 | resultPtr = Tcl_NewListObj(sortInfo.numElements, NULL); |
---|
3744 | listRepPtr = (List *) resultPtr->internalRep.twoPtrValue.ptr1; |
---|
3745 | newArray = &listRepPtr->elements; |
---|
3746 | if (indices) { |
---|
3747 | for (i = 0; elementPtr != NULL ; elementPtr = elementPtr->nextPtr){ |
---|
3748 | objPtr = Tcl_NewIntObj(PTR2INT(elementPtr->objPtr)); |
---|
3749 | newArray[i++] = objPtr; |
---|
3750 | Tcl_IncrRefCount(objPtr); |
---|
3751 | } |
---|
3752 | } else { |
---|
3753 | for (i = 0; elementPtr != NULL ; elementPtr = elementPtr->nextPtr){ |
---|
3754 | objPtr = elementPtr->objPtr; |
---|
3755 | newArray[i++] = objPtr; |
---|
3756 | Tcl_IncrRefCount(objPtr); |
---|
3757 | } |
---|
3758 | } |
---|
3759 | listRepPtr->elemCount = i; |
---|
3760 | Tcl_SetObjResult(interp, resultPtr); |
---|
3761 | } |
---|
3762 | |
---|
3763 | done1: |
---|
3764 | ckfree((char *)elementArray); |
---|
3765 | |
---|
3766 | done: |
---|
3767 | if (sortInfo.sortMode == SORTMODE_COMMAND) { |
---|
3768 | TclDecrRefCount(sortInfo.compareCmdPtr); |
---|
3769 | TclDecrRefCount(listObj); |
---|
3770 | sortInfo.compareCmdPtr = NULL; |
---|
3771 | } |
---|
3772 | if (sortInfo.indexc > 1) { |
---|
3773 | ckfree((char *) sortInfo.indexv); |
---|
3774 | } |
---|
3775 | return sortInfo.resultCode; |
---|
3776 | } |
---|
3777 | |
---|
3778 | /* |
---|
3779 | *---------------------------------------------------------------------- |
---|
3780 | * |
---|
3781 | * MergeLists - |
---|
3782 | * |
---|
3783 | * This procedure combines two sorted lists of SortElement structures |
---|
3784 | * into a single sorted list. |
---|
3785 | * |
---|
3786 | * Results: |
---|
3787 | * The unified list of SortElement structures. |
---|
3788 | * |
---|
3789 | * Side effects: |
---|
3790 | * If infoPtr->unique is set then infoPtr->numElements may be updated. |
---|
3791 | * Possibly others, if a user-defined comparison command does something |
---|
3792 | * weird. |
---|
3793 | * |
---|
3794 | * Note: |
---|
3795 | * If infoPtr->unique is set, the merge assumes that there are no |
---|
3796 | * "repeated" elements in each of the left and right lists. In that case, |
---|
3797 | * if any element of the left list is equivalent to one in the right list |
---|
3798 | * it is omitted from the merged list. |
---|
3799 | * This simplified mechanism works because of the special way |
---|
3800 | * our MergeSort creates the sublists to be merged and will fail to |
---|
3801 | * eliminate all repeats in the general case where they are already |
---|
3802 | * present in either the left or right list. A general code would need to |
---|
3803 | * skip adjacent initial repeats in the left and right lists before |
---|
3804 | * comparing their initial elements, at each step. |
---|
3805 | *---------------------------------------------------------------------- |
---|
3806 | */ |
---|
3807 | |
---|
3808 | static SortElement * |
---|
3809 | MergeLists( |
---|
3810 | SortElement *leftPtr, /* First list to be merged; may be NULL. */ |
---|
3811 | SortElement *rightPtr, /* Second list to be merged; may be NULL. */ |
---|
3812 | SortInfo *infoPtr) /* Information needed by the comparison |
---|
3813 | * operator. */ |
---|
3814 | { |
---|
3815 | SortElement *headPtr, *tailPtr; |
---|
3816 | int cmp; |
---|
3817 | |
---|
3818 | if (leftPtr == NULL) { |
---|
3819 | return rightPtr; |
---|
3820 | } |
---|
3821 | if (rightPtr == NULL) { |
---|
3822 | return leftPtr; |
---|
3823 | } |
---|
3824 | cmp = SortCompare(leftPtr, rightPtr, infoPtr); |
---|
3825 | if (cmp > 0 || (cmp == 0 && infoPtr->unique)) { |
---|
3826 | if (cmp == 0) { |
---|
3827 | infoPtr->numElements--; |
---|
3828 | leftPtr = leftPtr->nextPtr; |
---|
3829 | } |
---|
3830 | tailPtr = rightPtr; |
---|
3831 | rightPtr = rightPtr->nextPtr; |
---|
3832 | } else { |
---|
3833 | tailPtr = leftPtr; |
---|
3834 | leftPtr = leftPtr->nextPtr; |
---|
3835 | } |
---|
3836 | headPtr = tailPtr; |
---|
3837 | if (!infoPtr->unique) { |
---|
3838 | while ((leftPtr != NULL) && (rightPtr != NULL)) { |
---|
3839 | cmp = SortCompare(leftPtr, rightPtr, infoPtr); |
---|
3840 | if (cmp > 0) { |
---|
3841 | tailPtr->nextPtr = rightPtr; |
---|
3842 | tailPtr = rightPtr; |
---|
3843 | rightPtr = rightPtr->nextPtr; |
---|
3844 | } else { |
---|
3845 | tailPtr->nextPtr = leftPtr; |
---|
3846 | tailPtr = leftPtr; |
---|
3847 | leftPtr = leftPtr->nextPtr; |
---|
3848 | } |
---|
3849 | } |
---|
3850 | } else { |
---|
3851 | while ((leftPtr != NULL) && (rightPtr != NULL)) { |
---|
3852 | cmp = SortCompare(leftPtr, rightPtr, infoPtr); |
---|
3853 | if (cmp >= 0) { |
---|
3854 | if (cmp == 0) { |
---|
3855 | infoPtr->numElements--; |
---|
3856 | leftPtr = leftPtr->nextPtr; |
---|
3857 | } |
---|
3858 | tailPtr->nextPtr = rightPtr; |
---|
3859 | tailPtr = rightPtr; |
---|
3860 | rightPtr = rightPtr->nextPtr; |
---|
3861 | } else { |
---|
3862 | tailPtr->nextPtr = leftPtr; |
---|
3863 | tailPtr = leftPtr; |
---|
3864 | leftPtr = leftPtr->nextPtr; |
---|
3865 | } |
---|
3866 | } |
---|
3867 | } |
---|
3868 | if (leftPtr != NULL) { |
---|
3869 | tailPtr->nextPtr = leftPtr; |
---|
3870 | } else { |
---|
3871 | tailPtr->nextPtr = rightPtr; |
---|
3872 | } |
---|
3873 | return headPtr; |
---|
3874 | } |
---|
3875 | |
---|
3876 | /* |
---|
3877 | *---------------------------------------------------------------------- |
---|
3878 | * |
---|
3879 | * SortCompare -- |
---|
3880 | * |
---|
3881 | * This procedure is invoked by MergeLists to determine the proper |
---|
3882 | * ordering between two elements. |
---|
3883 | * |
---|
3884 | * Results: |
---|
3885 | * A negative results means the the first element comes before the |
---|
3886 | * second, and a positive results means that the second element should |
---|
3887 | * come first. A result of zero means the two elements are equal and it |
---|
3888 | * doesn't matter which comes first. |
---|
3889 | * |
---|
3890 | * Side effects: |
---|
3891 | * None, unless a user-defined comparison command does something weird. |
---|
3892 | * |
---|
3893 | *---------------------------------------------------------------------- |
---|
3894 | */ |
---|
3895 | |
---|
3896 | static int |
---|
3897 | SortCompare( |
---|
3898 | SortElement *elemPtr1, SortElement *elemPtr2, |
---|
3899 | /* Values to be compared. */ |
---|
3900 | SortInfo *infoPtr) /* Information passed from the top-level |
---|
3901 | * "lsort" command. */ |
---|
3902 | { |
---|
3903 | int order = 0; |
---|
3904 | |
---|
3905 | if (infoPtr->sortMode == SORTMODE_ASCII) { |
---|
3906 | order = strcmp(elemPtr1->index.strValuePtr, |
---|
3907 | elemPtr2->index.strValuePtr); |
---|
3908 | } else if (infoPtr->sortMode == SORTMODE_ASCII_NC) { |
---|
3909 | order = strcasecmp(elemPtr1->index.strValuePtr, |
---|
3910 | elemPtr2->index.strValuePtr); |
---|
3911 | } else if (infoPtr->sortMode == SORTMODE_DICTIONARY) { |
---|
3912 | order = DictionaryCompare(elemPtr1->index.strValuePtr, |
---|
3913 | elemPtr2->index.strValuePtr); |
---|
3914 | } else if (infoPtr->sortMode == SORTMODE_INTEGER) { |
---|
3915 | long a, b; |
---|
3916 | |
---|
3917 | a = elemPtr1->index.intValue; |
---|
3918 | b = elemPtr2->index.intValue; |
---|
3919 | order = ((a >= b) - (a <= b)); |
---|
3920 | } else if (infoPtr->sortMode == SORTMODE_REAL) { |
---|
3921 | double a, b; |
---|
3922 | |
---|
3923 | a = elemPtr1->index.doubleValue; |
---|
3924 | b = elemPtr2->index.doubleValue; |
---|
3925 | order = ((a >= b) - (a <= b)); |
---|
3926 | } else { |
---|
3927 | Tcl_Obj **objv, *paramObjv[2]; |
---|
3928 | int objc; |
---|
3929 | Tcl_Obj *objPtr1, *objPtr2; |
---|
3930 | |
---|
3931 | if (infoPtr->resultCode != TCL_OK) { |
---|
3932 | /* |
---|
3933 | * Once an error has occurred, skip any future comparisons so as |
---|
3934 | * to preserve the error message in sortInterp->result. |
---|
3935 | */ |
---|
3936 | |
---|
3937 | return 0; |
---|
3938 | } |
---|
3939 | |
---|
3940 | |
---|
3941 | objPtr1 = elemPtr1->index.objValuePtr; |
---|
3942 | objPtr2 = elemPtr2->index.objValuePtr; |
---|
3943 | |
---|
3944 | paramObjv[0] = objPtr1; |
---|
3945 | paramObjv[1] = objPtr2; |
---|
3946 | |
---|
3947 | /* |
---|
3948 | * We made space in the command list for the two things to compare. |
---|
3949 | * Replace them and evaluate the result. |
---|
3950 | */ |
---|
3951 | |
---|
3952 | TclListObjLength(infoPtr->interp, infoPtr->compareCmdPtr, &objc); |
---|
3953 | Tcl_ListObjReplace(infoPtr->interp, infoPtr->compareCmdPtr, objc - 2, |
---|
3954 | 2, 2, paramObjv); |
---|
3955 | TclListObjGetElements(infoPtr->interp, infoPtr->compareCmdPtr, |
---|
3956 | &objc, &objv); |
---|
3957 | |
---|
3958 | infoPtr->resultCode = Tcl_EvalObjv(infoPtr->interp, objc, objv, 0); |
---|
3959 | |
---|
3960 | if (infoPtr->resultCode != TCL_OK) { |
---|
3961 | Tcl_AddErrorInfo(infoPtr->interp, |
---|
3962 | "\n (-compare command)"); |
---|
3963 | return 0; |
---|
3964 | } |
---|
3965 | |
---|
3966 | /* |
---|
3967 | * Parse the result of the command. |
---|
3968 | */ |
---|
3969 | |
---|
3970 | if (TclGetIntFromObj(infoPtr->interp, |
---|
3971 | Tcl_GetObjResult(infoPtr->interp), &order) != TCL_OK) { |
---|
3972 | Tcl_ResetResult(infoPtr->interp); |
---|
3973 | Tcl_AppendResult(infoPtr->interp, |
---|
3974 | "-compare command returned non-integer result", NULL); |
---|
3975 | infoPtr->resultCode = TCL_ERROR; |
---|
3976 | return 0; |
---|
3977 | } |
---|
3978 | } |
---|
3979 | if (!infoPtr->isIncreasing) { |
---|
3980 | order = -order; |
---|
3981 | } |
---|
3982 | return order; |
---|
3983 | } |
---|
3984 | |
---|
3985 | /* |
---|
3986 | *---------------------------------------------------------------------- |
---|
3987 | * |
---|
3988 | * DictionaryCompare |
---|
3989 | * |
---|
3990 | * This function compares two strings as if they were being used in an |
---|
3991 | * index or card catalog. The case of alphabetic characters is ignored, |
---|
3992 | * except to break ties. Thus "B" comes before "b" but after "a". Also, |
---|
3993 | * integers embedded in the strings compare in numerical order. In other |
---|
3994 | * words, "x10y" comes after "x9y", not * before it as it would when |
---|
3995 | * using strcmp(). |
---|
3996 | * |
---|
3997 | * Results: |
---|
3998 | * A negative result means that the first element comes before the |
---|
3999 | * second, and a positive result means that the second element should |
---|
4000 | * come first. A result of zero means the two elements are equal and it |
---|
4001 | * doesn't matter which comes first. |
---|
4002 | * |
---|
4003 | * Side effects: |
---|
4004 | * None. |
---|
4005 | * |
---|
4006 | *---------------------------------------------------------------------- |
---|
4007 | */ |
---|
4008 | |
---|
4009 | static int |
---|
4010 | DictionaryCompare( |
---|
4011 | char *left, char *right) /* The strings to compare. */ |
---|
4012 | { |
---|
4013 | Tcl_UniChar uniLeft, uniRight, uniLeftLower, uniRightLower; |
---|
4014 | int diff, zeros; |
---|
4015 | int secondaryDiff = 0; |
---|
4016 | |
---|
4017 | while (1) { |
---|
4018 | if (isdigit(UCHAR(*right)) /* INTL: digit */ |
---|
4019 | && isdigit(UCHAR(*left))) { /* INTL: digit */ |
---|
4020 | /* |
---|
4021 | * There are decimal numbers embedded in the two strings. Compare |
---|
4022 | * them as numbers, rather than strings. If one number has more |
---|
4023 | * leading zeros than the other, the number with more leading |
---|
4024 | * zeros sorts later, but only as a secondary choice. |
---|
4025 | */ |
---|
4026 | |
---|
4027 | zeros = 0; |
---|
4028 | while ((*right == '0') && (isdigit(UCHAR(right[1])))) { |
---|
4029 | right++; |
---|
4030 | zeros--; |
---|
4031 | } |
---|
4032 | while ((*left == '0') && (isdigit(UCHAR(left[1])))) { |
---|
4033 | left++; |
---|
4034 | zeros++; |
---|
4035 | } |
---|
4036 | if (secondaryDiff == 0) { |
---|
4037 | secondaryDiff = zeros; |
---|
4038 | } |
---|
4039 | |
---|
4040 | /* |
---|
4041 | * The code below compares the numbers in the two strings without |
---|
4042 | * ever converting them to integers. It does this by first |
---|
4043 | * comparing the lengths of the numbers and then comparing the |
---|
4044 | * digit values. |
---|
4045 | */ |
---|
4046 | |
---|
4047 | diff = 0; |
---|
4048 | while (1) { |
---|
4049 | if (diff == 0) { |
---|
4050 | diff = UCHAR(*left) - UCHAR(*right); |
---|
4051 | } |
---|
4052 | right++; |
---|
4053 | left++; |
---|
4054 | if (!isdigit(UCHAR(*right))) { /* INTL: digit */ |
---|
4055 | if (isdigit(UCHAR(*left))) { /* INTL: digit */ |
---|
4056 | return 1; |
---|
4057 | } else { |
---|
4058 | /* |
---|
4059 | * The two numbers have the same length. See if their |
---|
4060 | * values are different. |
---|
4061 | */ |
---|
4062 | |
---|
4063 | if (diff != 0) { |
---|
4064 | return diff; |
---|
4065 | } |
---|
4066 | break; |
---|
4067 | } |
---|
4068 | } else if (!isdigit(UCHAR(*left))) { /* INTL: digit */ |
---|
4069 | return -1; |
---|
4070 | } |
---|
4071 | } |
---|
4072 | continue; |
---|
4073 | } |
---|
4074 | |
---|
4075 | /* |
---|
4076 | * Convert character to Unicode for comparison purposes. If either |
---|
4077 | * string is at the terminating null, do a byte-wise comparison and |
---|
4078 | * bail out immediately. |
---|
4079 | */ |
---|
4080 | |
---|
4081 | if ((*left != '\0') && (*right != '\0')) { |
---|
4082 | left += Tcl_UtfToUniChar(left, &uniLeft); |
---|
4083 | right += Tcl_UtfToUniChar(right, &uniRight); |
---|
4084 | |
---|
4085 | /* |
---|
4086 | * Convert both chars to lower for the comparison, because |
---|
4087 | * dictionary sorts are case insensitve. Covert to lower, not |
---|
4088 | * upper, so chars between Z and a will sort before A (where most |
---|
4089 | * other interesting punctuations occur). |
---|
4090 | */ |
---|
4091 | |
---|
4092 | uniLeftLower = Tcl_UniCharToLower(uniLeft); |
---|
4093 | uniRightLower = Tcl_UniCharToLower(uniRight); |
---|
4094 | } else { |
---|
4095 | diff = UCHAR(*left) - UCHAR(*right); |
---|
4096 | break; |
---|
4097 | } |
---|
4098 | |
---|
4099 | diff = uniLeftLower - uniRightLower; |
---|
4100 | if (diff) { |
---|
4101 | return diff; |
---|
4102 | } |
---|
4103 | if (secondaryDiff == 0) { |
---|
4104 | if (Tcl_UniCharIsUpper(uniLeft) && Tcl_UniCharIsLower(uniRight)) { |
---|
4105 | secondaryDiff = -1; |
---|
4106 | } else if (Tcl_UniCharIsUpper(uniRight) |
---|
4107 | && Tcl_UniCharIsLower(uniLeft)) { |
---|
4108 | secondaryDiff = 1; |
---|
4109 | } |
---|
4110 | } |
---|
4111 | } |
---|
4112 | if (diff == 0) { |
---|
4113 | diff = secondaryDiff; |
---|
4114 | } |
---|
4115 | return diff; |
---|
4116 | } |
---|
4117 | |
---|
4118 | /* |
---|
4119 | *---------------------------------------------------------------------- |
---|
4120 | * |
---|
4121 | * SelectObjFromSublist -- |
---|
4122 | * |
---|
4123 | * This procedure is invoked from lsearch and SortCompare. It is used for |
---|
4124 | * implementing the -index option, for the lsort and lsearch commands. |
---|
4125 | * |
---|
4126 | * Results: |
---|
4127 | * Returns NULL if a failure occurs, and sets the result in the infoPtr. |
---|
4128 | * Otherwise returns the Tcl_Obj* to the item. |
---|
4129 | * |
---|
4130 | * Side effects: |
---|
4131 | * None. |
---|
4132 | * |
---|
4133 | * Note: |
---|
4134 | * No reference counting is done, as the result is only used internally |
---|
4135 | * and never passed directly to user code. |
---|
4136 | * |
---|
4137 | *---------------------------------------------------------------------- |
---|
4138 | */ |
---|
4139 | |
---|
4140 | static Tcl_Obj * |
---|
4141 | SelectObjFromSublist( |
---|
4142 | Tcl_Obj *objPtr, /* Obj to select sublist from. */ |
---|
4143 | SortInfo *infoPtr) /* Information passed from the top-level |
---|
4144 | * "lsearch" or "lsort" command. */ |
---|
4145 | { |
---|
4146 | int i; |
---|
4147 | |
---|
4148 | /* |
---|
4149 | * Quick check for case when no "-index" option is there. |
---|
4150 | */ |
---|
4151 | |
---|
4152 | if (infoPtr->indexc == 0) { |
---|
4153 | return objPtr; |
---|
4154 | } |
---|
4155 | |
---|
4156 | /* |
---|
4157 | * Iterate over the indices, traversing through the nested sublists as we |
---|
4158 | * go. |
---|
4159 | */ |
---|
4160 | |
---|
4161 | for (i=0 ; i<infoPtr->indexc ; i++) { |
---|
4162 | int listLen, index; |
---|
4163 | Tcl_Obj *currentObj; |
---|
4164 | |
---|
4165 | if (TclListObjLength(infoPtr->interp, objPtr, &listLen) != TCL_OK) { |
---|
4166 | infoPtr->resultCode = TCL_ERROR; |
---|
4167 | return NULL; |
---|
4168 | } |
---|
4169 | index = infoPtr->indexv[i]; |
---|
4170 | |
---|
4171 | /* |
---|
4172 | * Adjust for end-based indexing. |
---|
4173 | */ |
---|
4174 | |
---|
4175 | if (index < SORTIDX_NONE) { |
---|
4176 | index += listLen + 1; |
---|
4177 | } |
---|
4178 | |
---|
4179 | if (Tcl_ListObjIndex(infoPtr->interp, objPtr, index, |
---|
4180 | ¤tObj) != TCL_OK) { |
---|
4181 | infoPtr->resultCode = TCL_ERROR; |
---|
4182 | return NULL; |
---|
4183 | } |
---|
4184 | if (currentObj == NULL) { |
---|
4185 | char buffer[TCL_INTEGER_SPACE]; |
---|
4186 | |
---|
4187 | TclFormatInt(buffer, index); |
---|
4188 | Tcl_AppendResult(infoPtr->interp, "element ", buffer, |
---|
4189 | " missing from sublist \"", TclGetString(objPtr), "\"", |
---|
4190 | NULL); |
---|
4191 | infoPtr->resultCode = TCL_ERROR; |
---|
4192 | return NULL; |
---|
4193 | } |
---|
4194 | objPtr = currentObj; |
---|
4195 | } |
---|
4196 | return objPtr; |
---|
4197 | } |
---|
4198 | |
---|
4199 | /* |
---|
4200 | * Local Variables: |
---|
4201 | * mode: c |
---|
4202 | * c-basic-offset: 4 |
---|
4203 | * fill-column: 78 |
---|
4204 | * End: |
---|
4205 | */ |
---|