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source: orxonox.OLD/trunk/src/lib/shell/shell_buffer.cc @ 5183

Last change on this file since 5183 was 5183, checked in by bensch, 19 years ago

orxonox/trunk: SubString now also can split by whiteSpaces :>
this cost me almost 2 hours… sometimes i think, that i am unable to think…. :/
other times it just works, like when learning some Information Transfer

File size: 4.6 KB
Line 
1/*
2   orxonox - the future of 3D-vertical-scrollers
3
4   Copyright (C) 2004 orx
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10
11   ### File Specific:
12   main-programmer: ...
13   co-programmer: ...
14*/
15
16//#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_
17
18#include "shell_buffer.h"
19#include "debug.h"
20#include "list.h"
21#include "shell.h"
22
23#include "stdlibincl.h"
24
25using namespace std;
26
27
28/**
29 * standard constructor
30 * @todo this constructor is not jet implemented - do it
31*/
32ShellBuffer::ShellBuffer ()
33{
34  ShellBuffer::singletonRef = this;
35
36  this->lineCount = 0;
37  this->keepBufferArray[0] = '\0';
38  this->keepBuffer = false;
39  this->buffer = new tList<char>;
40  this->bufferIterator = this->buffer->getIterator();
41
42  this->setBufferSize(100);
43}
44
45ShellBuffer* ShellBuffer::singletonRef = NULL;
46
47/**
48 * standard deconstructor
49*/
50ShellBuffer::~ShellBuffer ()
51{
52  if (Shell::isInstanciated())
53    delete Shell::getInstance();
54
55  this->flushBuffers();
56  delete bufferIterator;
57  delete buffer;
58
59  ShellBuffer::singletonRef = NULL;
60}
61
62/**
63 * deletes all the Buffers
64 */
65void ShellBuffer::flushBuffers()
66{
67  // delete all the Chars in the Buffers
68  char* charElem = bufferIterator->firstElement();
69  while (charElem != NULL)
70  {
71    delete charElem;
72    charElem = bufferIterator->nextElement();
73  }
74  delete this->bufferIterator;
75  delete this->buffer;
76  this->buffer = new tList<char>;
77  this->bufferIterator = this->buffer->getIterator();
78}
79
80/**
81 * adds a new Line to the List of Buffers
82 * @param line the Line as in the first argument in printf
83 */
84bool ShellBuffer::addBufferLineStatic(const char* line, ...)
85{
86  va_list arguments;
87  va_start(arguments, line);
88
89#if DEBUG < 3
90  if (ShellBuffer::singletonRef == NULL)
91#endif
92
93    vprintf(line, arguments);
94#if DEBUG < 3
95  else
96#else
97  if (ShellBuffer::singletonRef != NULL)
98#endif
99    ShellBuffer::singletonRef->addBufferLine(line, arguments);
100  return true;
101}
102
103/**
104 * add a Line to the List of Buffers
105 * @param line
106 * @param arguments
107 *
108 * This function Adds one line to the buffer.
109 * and displays the line as the First Line of the display-buffer
110 */
111void ShellBuffer::addBufferLine(const char* line, va_list arguments)
112{
113  vsprintf(this->bufferArray, line, arguments);
114
115  char* inputEnd;
116  char* newLineBegin;
117  char* newLineEnd;
118
119   // check if we have something left in the buffers
120  if (unlikely(this->keepBuffer))
121  {
122    strcat(this->keepBufferArray, this->bufferArray);
123    inputEnd = this->keepBufferArray + strlen(this->keepBufferArray);
124    newLineBegin = this->keepBufferArray;
125    this->keepBuffer = false;
126  }
127  else
128  {
129    inputEnd = this->bufferArray + strlen(this->bufferArray);
130    newLineBegin = this->bufferArray;
131  }
132
133   // adding all the new Lines
134  while (newLineBegin < inputEnd)
135  {
136    newLineEnd = strchr(newLineBegin, '\n');
137    if (newLineEnd != NULL && *newLineEnd == '\n')
138      *newLineEnd = '\0';
139    else
140    {
141//       newLineEnd = newLineBegin + strlen(newLineBegin);
142      strcpy(this->keepBufferArray, newLineBegin);
143      this->keepBuffer = true;
144      break;
145    }
146
147    char* addLine = new char[strlen(newLineBegin)+1];
148    strcpy(addLine, newLineBegin);
149
150    this->lineCount++;
151    this->buffer->add(addLine);
152    if (Shell::isInstanciated() && Shell::getInstance()->isActive())
153      Shell::getInstance()->printToDisplayBuffer(addLine);
154
155    if (this->buffer->getSize() > this->bufferSize)
156    {
157      delete this->buffer->firstElement();
158      this->buffer->remove(this->buffer->firstElement());
159    }
160
161    newLineBegin = newLineEnd+1;
162  }
163}
164
165/**
166 * moves the buffer around lineCount lines upwards (negative values move down)
167 * @param lineCount the Count of lines to move upwards
168 *
169 * @todo
170 */
171void ShellBuffer::moveBuffer(unsigned int lineCount)
172{
173}
174
175/**
176 * @param lineNumber the n-th line from the bottom
177 * @returns the Buffer at Line lineNumber
178 */
179const char* ShellBuffer::getBufferLine(unsigned int lineNumber)
180{
181  tIterator<char>* charIterator = this->buffer->getIterator();
182  char* charElem = charIterator->firstElement();
183
184  int i = 1;
185  while (charElem != NULL)
186  {
187    if (i++ < lineNumber)
188    {
189      delete charIterator;
190      return charElem;
191    }
192
193    charElem = charIterator->nextElement();
194  }
195  delete charIterator;
196}
197
198/**
199 * displays some nice output from the Shell
200 */
201void ShellBuffer::debug() const
202{
203  PRINT(3)("Debugging output to console (not this shell)\n");
204
205  char* tmpChar = bufferIterator->firstElement();
206  while(tmpChar != NULL)
207  {
208    printf(tmpChar);
209    tmpChar = bufferIterator->nextElement();
210  }
211}
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