[1505] | 1 | /* |
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| 2 | * ORXONOX - the hottest 3D action shooter ever to exist |
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| 3 | * > www.orxonox.net < |
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| 4 | * |
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| 5 | * |
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| 6 | * License notice: |
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| 7 | * |
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| 8 | * This program is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU General Public License |
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| 10 | * as published by the Free Software Foundation; either version 2 |
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| 11 | * of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * This program is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | * GNU General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU General Public License |
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| 19 | * along with this program; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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| 21 | * |
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| 22 | * Author: |
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| 23 | * Fabian 'x3n' Landau |
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| 24 | * Co-authors: |
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| 25 | * Benjamin Grauer |
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| 26 | * |
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| 27 | */ |
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| 28 | |
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[1791] | 29 | /** |
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[2171] | 30 | @file |
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[1791] | 31 | @brief Implementation of several string manipulation functions. |
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| 32 | */ |
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| 33 | |
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[1505] | 34 | #include "String.h" |
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| 35 | |
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| 36 | #include <cctype> |
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| 37 | #include <iostream> |
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| 38 | |
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[2087] | 39 | #include "Convert.h" |
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| 40 | #include "Math.h" |
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[1625] | 41 | |
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[2171] | 42 | namespace orxonox |
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[2087] | 43 | { |
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[2171] | 44 | std::string BLANKSTRING(""); |
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[2087] | 45 | |
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[2171] | 46 | std::string getUniqueNumberString() |
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| 47 | { |
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| 48 | return convertToString(getUniqueNumber()); |
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| 49 | } |
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[1505] | 50 | |
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[2171] | 51 | /** |
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| 52 | @brief Removes all whitespaces from a string. |
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| 53 | @param str The string to strip |
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| 54 | */ |
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| 55 | void strip(std::string* str) |
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| 56 | { |
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| 57 | size_t pos; |
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| 58 | while ((pos = (*str).find(" ")) < (*str).length()) |
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| 59 | (*str).erase(pos, 1); |
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| 60 | while ((pos = (*str).find("\t")) < (*str).length()) |
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| 61 | (*str).erase(pos, 1); |
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| 62 | while ((pos = (*str).find("\n")) < (*str).length()) |
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| 63 | (*str).erase(pos, 1); |
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| 64 | } |
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[1505] | 65 | |
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[2171] | 66 | /** |
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| 67 | @brief Returns a copy of a string without whitespaces. |
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| 68 | @param str The string to strip |
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| 69 | @return The stripped line |
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| 70 | */ |
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| 71 | std::string getStripped(const std::string& str) |
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| 72 | { |
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| 73 | std::string output = std::string(str); |
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| 74 | strip(&output); |
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| 75 | return output; |
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| 76 | } |
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[1505] | 77 | |
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[2171] | 78 | /** |
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| 79 | @brief Returns a copy of a string without trailing whitespaces. |
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| 80 | @param str The string |
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| 81 | @return The modified copy |
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| 82 | */ |
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| 83 | std::string removeTrailingWhitespaces(const std::string& str) |
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| 84 | { |
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| 85 | size_t pos1 = 0; |
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| 86 | int pos2 = str.size() - 1; |
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| 87 | for (; pos1 < str.size() && (str[pos1] == ' ' || str[pos1] == '\t' || str[pos1] == '\n'); pos1++); |
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| 88 | for (; pos2 > 0 && (str[pos2] == ' ' || str[pos2] == '\t' || str[pos2] == '\n'); pos2--); |
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| 89 | return str.substr(pos1, pos2 - pos1 + 1); |
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| 90 | } |
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[1505] | 91 | |
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[2171] | 92 | /** |
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| 93 | @brief Returns the position of the next quote in the string, starting with start. |
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| 94 | @param str The string |
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| 95 | @param start The startposition |
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| 96 | @return The position of the next quote (std::string::npos if there is no next quote) |
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| 97 | */ |
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| 98 | size_t getNextQuote(const std::string& str, size_t start) |
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[1505] | 99 | { |
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[2171] | 100 | size_t quote = start - 1; |
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| 101 | |
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| 102 | while ((quote = str.find('\"', quote + 1)) != std::string::npos) |
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| 103 | { |
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| 104 | size_t backslash = quote; |
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| 105 | size_t numbackslashes = 0; |
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| 106 | for (; backslash > 0; backslash--, numbackslashes++) |
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| 107 | if (str[backslash - 1] != '\\') |
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| 108 | break; |
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| 109 | |
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| 110 | if (numbackslashes % 2 == 0) |
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[1505] | 111 | break; |
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[2171] | 112 | } |
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[1505] | 113 | |
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[2171] | 114 | return quote; |
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[1505] | 115 | } |
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| 116 | |
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[2171] | 117 | /** |
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| 118 | @brief Returns true if pos is between two quotes. |
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| 119 | @param str The string |
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| 120 | @param pos The position to check |
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| 121 | @return True if pos is between two quotes |
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| 122 | */ |
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| 123 | bool isBetweenQuotes(const std::string& str, size_t pos) |
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[1505] | 124 | { |
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[2171] | 125 | if (pos == std::string::npos) |
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[1830] | 126 | return false; |
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[1505] | 127 | |
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[2171] | 128 | size_t quotecount = 0; |
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| 129 | size_t quote = (size_t)-1; |
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| 130 | while ((quote = getNextQuote(str, quote + 1)) < pos) |
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| 131 | { |
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| 132 | if (quote == pos) |
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| 133 | return false; |
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| 134 | quotecount++; |
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| 135 | } |
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[1505] | 136 | |
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[2171] | 137 | if (quote == std::string::npos) |
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| 138 | return false; |
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[1505] | 139 | |
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[2171] | 140 | return ((quotecount % 2) == 1); |
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| 141 | } |
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[1505] | 142 | |
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[2171] | 143 | /** |
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| 144 | @brief Returns true if the string contains something like '..."between quotes"...'. |
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| 145 | @param The string |
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| 146 | @return True if there is something between quotes |
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| 147 | */ |
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| 148 | bool hasStringBetweenQuotes(const std::string& str) |
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| 149 | { |
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| 150 | size_t pos1 = getNextQuote(str, 0); |
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| 151 | size_t pos2 = getNextQuote(str, pos1 + 1); |
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| 152 | return (pos1 != std::string::npos && pos2 != std::string::npos && pos2 > pos1 + 1); |
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| 153 | } |
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[1505] | 154 | |
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[2171] | 155 | /** |
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| 156 | @brief If the string contains something like '..."between quotes"...' then 'between quotes' gets returned (without quotes). |
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| 157 | @param The string |
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| 158 | @param The string between the quotes |
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| 159 | */ |
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| 160 | std::string getStringBetweenQuotes(const std::string& str) |
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| 161 | { |
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| 162 | size_t pos1 = getNextQuote(str, 0); |
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| 163 | size_t pos2 = getNextQuote(str, pos1 + 1); |
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| 164 | if (pos1 != std::string::npos && pos2 != std::string::npos) |
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| 165 | return str.substr(pos1, pos2 - pos1 + 1); |
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| 166 | else |
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| 167 | return ""; |
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| 168 | } |
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[1505] | 169 | |
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[2171] | 170 | /** |
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| 171 | @brief Removes enclosing quotes if available (including whitespaces at the outside of the quotes). |
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| 172 | @brief str The string to strip |
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| 173 | @return The string with removed quotes |
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| 174 | */ |
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| 175 | std::string stripEnclosingQuotes(const std::string& str) |
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[1505] | 176 | { |
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[2171] | 177 | size_t start = std::string::npos; |
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| 178 | size_t end = 0; |
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| 179 | |
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| 180 | for (size_t pos = 0; (pos < str.size()) && (pos < std::string::npos); pos++) |
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[1505] | 181 | { |
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[2171] | 182 | if (str[pos] == '"') |
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| 183 | { |
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| 184 | start = pos; |
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| 185 | break; |
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| 186 | } |
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| 187 | |
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| 188 | if ((str[pos] != ' ') && (str[pos] != '\t') && (str[pos] != '\n')) |
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| 189 | return str; |
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[1505] | 190 | } |
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| 191 | |
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[2171] | 192 | for (size_t pos = str.size() - 1; pos < std::string::npos; pos--) |
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| 193 | { |
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| 194 | if (str[pos] == '"') |
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| 195 | { |
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| 196 | end = pos; |
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| 197 | break; |
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| 198 | } |
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[1505] | 199 | |
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[2171] | 200 | if ((str[pos] != ' ') && (str[pos] != '\t') && (str[pos] != '\n')) |
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| 201 | return str; |
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[1505] | 202 | } |
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| 203 | |
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[2171] | 204 | if ((start != std::string::npos) && (end != 0)) |
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| 205 | return str.substr(start + 1, end - start - 1); |
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| 206 | else |
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[1505] | 207 | return str; |
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| 208 | } |
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| 209 | |
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[2171] | 210 | /** |
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| 211 | @brief Removes enclosing {braces} (braces must be exactly on the beginning and the end of the string). |
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| 212 | @param str The string to strip |
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| 213 | @return The striped string |
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| 214 | */ |
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| 215 | std::string stripEnclosingBraces(const std::string& str) |
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| 216 | { |
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| 217 | std::string output = str; |
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[1505] | 218 | |
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[2171] | 219 | while (output.size() >= 2 && output[0] == '{' && output[output.size() - 1] == '}') |
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| 220 | output = output.substr(1, output.size() - 2); |
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[1505] | 221 | |
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[2171] | 222 | return output; |
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| 223 | } |
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[1505] | 224 | |
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[2171] | 225 | /** |
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| 226 | @brief Determines if a string is a comment (starts with a comment-symbol). |
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| 227 | @param str The string to check |
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| 228 | @return True = it's a comment |
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[1505] | 229 | |
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[2171] | 230 | A comment is defined by a leading '#', '%', ';' or '//'. |
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| 231 | */ |
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| 232 | bool isComment(const std::string& str) |
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| 233 | { |
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| 234 | // Strip the line, whitespaces are disturbing |
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| 235 | std::string teststring = getStripped(str); |
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[1505] | 236 | |
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[2171] | 237 | // There are four possible comment-symbols: |
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| 238 | // 1) #comment in script-language style |
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| 239 | // 2) %comment in matlab style |
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| 240 | // 3) ;comment in unreal tournament config-file style |
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| 241 | // 4) //comment in code style |
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| 242 | if (teststring.size() >= 2) |
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| 243 | { |
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| 244 | if (teststring[0] == '#' || teststring[0] == '%' || teststring[0] == ';' || (teststring[0] == '/' && teststring[1] == '/')) |
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| 245 | return true; |
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| 246 | } |
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| 247 | else if (teststring.size() == 1) |
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| 248 | { |
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| 249 | if (teststring[0] == '#' || teststring[0] == '%' || teststring[0] == ';') |
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| 250 | return true; |
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| 251 | } |
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[1505] | 252 | |
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[2171] | 253 | return false; |
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[1505] | 254 | } |
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[2171] | 255 | |
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| 256 | /** |
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| 257 | @brief Determines if a string is empty (contains only whitespaces). |
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| 258 | @param str The string to check |
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| 259 | @return True = it's empty |
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| 260 | */ |
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| 261 | bool isEmpty(const std::string& str) |
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[1505] | 262 | { |
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[2171] | 263 | std::string temp = getStripped(str); |
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| 264 | return ((temp == "") || (temp.size() == 0)); |
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[1505] | 265 | } |
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| 266 | |
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[2171] | 267 | /** |
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| 268 | @brief Determines if a string contains only numbers and maximal one '.'. |
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| 269 | @param str The string to check |
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| 270 | @return True = it's a number |
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| 271 | */ |
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| 272 | bool isNumeric(const std::string& str) |
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| 273 | { |
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| 274 | bool foundPoint = false; |
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[1505] | 275 | |
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[2171] | 276 | for (std::string::const_iterator it = str.begin(); it != str.end(); ++it) |
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[1505] | 277 | { |
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[2171] | 278 | if (((*it) < '0' || (*it) > '9')) |
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| 279 | { |
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| 280 | if ((*it) != '.' && !foundPoint) |
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| 281 | foundPoint = true; |
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| 282 | else |
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| 283 | return false; |
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| 284 | } |
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[1505] | 285 | } |
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[2171] | 286 | |
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| 287 | return true; |
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[1505] | 288 | } |
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| 289 | |
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[2171] | 290 | /** |
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| 291 | @brief Adds backslashes to the given string which makes special chars visible. Existing slashes will be doubled. |
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| 292 | @param str The string to manipulate |
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| 293 | @return The string with added slashes |
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| 294 | */ |
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| 295 | std::string addSlashes(const std::string& str) |
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| 296 | { |
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| 297 | std::string output = str; |
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[1505] | 298 | |
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[2171] | 299 | for (size_t pos = 0; (pos = output.find('\\', pos)) < std::string::npos; pos += 2) { output.replace(pos, 1, "\\\\"); } |
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| 300 | for (size_t pos = 0; (pos = output.find('\n', pos)) < std::string::npos; pos += 2) { output.replace(pos, 1, "\\n"); } |
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| 301 | for (size_t pos = 0; (pos = output.find('\t', pos)) < std::string::npos; pos += 2) { output.replace(pos, 1, "\\t"); } |
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| 302 | for (size_t pos = 0; (pos = output.find('\v', pos)) < std::string::npos; pos += 2) { output.replace(pos, 1, "\\v"); } |
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| 303 | for (size_t pos = 0; (pos = output.find('\b', pos)) < std::string::npos; pos += 2) { output.replace(pos, 1, "\\b"); } |
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| 304 | for (size_t pos = 0; (pos = output.find('\r', pos)) < std::string::npos; pos += 2) { output.replace(pos, 1, "\\r"); } |
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| 305 | for (size_t pos = 0; (pos = output.find('\f', pos)) < std::string::npos; pos += 2) { output.replace(pos, 1, "\\f"); } |
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| 306 | for (size_t pos = 0; (pos = output.find('\a', pos)) < std::string::npos; pos += 2) { output.replace(pos, 1, "\\a"); } |
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| 307 | for (size_t pos = 0; (pos = output.find('"', pos)) < std::string::npos; pos += 2) { output.replace(pos, 1, "\\\""); } |
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| 308 | for (size_t pos = 0; (pos = output.find('\0', pos)) < std::string::npos; pos += 2) { output.replace(pos, 1, "\\0"); } |
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[1505] | 309 | |
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[2171] | 310 | return output; |
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| 311 | } |
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[1505] | 312 | |
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[2171] | 313 | /** |
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| 314 | @brief Removes backslashes from the given string. Double backslashes are interpreted as one backslash. |
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| 315 | @param str The string to manipulate |
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| 316 | @return The string with removed slashes |
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| 317 | */ |
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| 318 | std::string removeSlashes(const std::string& str) |
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| 319 | { |
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| 320 | if (str.size() <= 1) |
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| 321 | return str; |
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[1505] | 322 | |
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[2171] | 323 | std::string output = ""; |
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| 324 | for (size_t pos = 0; pos < str.size() - 1; ) |
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| 325 | { |
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| 326 | if (str[pos] == '\\') |
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| 327 | { |
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| 328 | if (str[pos + 1] == '\\') { output += '\\'; pos += 2; continue; } |
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| 329 | else if (str[pos + 1] == 'n') { output += '\n'; pos += 2; continue; } |
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| 330 | else if (str[pos + 1] == 't') { output += '\t'; pos += 2; continue; } |
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| 331 | else if (str[pos + 1] == 'v') { output += '\v'; pos += 2; continue; } |
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| 332 | else if (str[pos + 1] == 'b') { output += '\b'; pos += 2; continue; } |
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| 333 | else if (str[pos + 1] == 'r') { output += '\r'; pos += 2; continue; } |
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| 334 | else if (str[pos + 1] == 'f') { output += '\f'; pos += 2; continue; } |
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| 335 | else if (str[pos + 1] == 'a') { output += '\a'; pos += 2; continue; } |
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| 336 | else if (str[pos + 1] == '"') { output += '"'; pos += 2; continue; } |
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| 337 | else if (str[pos + 1] == '0') { output += '\0'; pos += 2; continue; } |
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| 338 | } |
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| 339 | output += str[pos]; |
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| 340 | pos++; |
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| 341 | if (pos == str.size() - 1) |
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| 342 | output += str[pos]; |
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| 343 | } |
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[1505] | 344 | |
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[2171] | 345 | return output; |
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| 346 | } |
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| 347 | |
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| 348 | /** |
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| 349 | @brief Replaces each char between A and Z with its lowercase equivalent. |
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| 350 | @param str The string to convert |
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| 351 | */ |
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| 352 | void lowercase(std::string* str) |
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[1505] | 353 | { |
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[2171] | 354 | for (size_t i = 0; i < str->size(); ++i) |
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[1505] | 355 | { |
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[2171] | 356 | (*str)[i] = (char)tolower((*str)[i]); |
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[1505] | 357 | } |
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| 358 | } |
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| 359 | |
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[2171] | 360 | /** |
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| 361 | @brief Returns a copy of the given string without uppercase chars. |
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| 362 | @param str The string |
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| 363 | @return The copy |
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| 364 | */ |
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| 365 | std::string getLowercase(const std::string& str) |
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| 366 | { |
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| 367 | std::string output = std::string(str); |
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| 368 | lowercase(&output); |
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| 369 | return output; |
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| 370 | } |
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[1505] | 371 | |
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[2171] | 372 | /** |
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| 373 | @brief Replaces each char between a and z with its uppercase equivalent. |
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| 374 | @param str The string to convert |
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| 375 | */ |
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| 376 | void uppercase(std::string* str) |
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[1505] | 377 | { |
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[2171] | 378 | for (size_t i = 0; i < str->size(); ++i) |
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| 379 | { |
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| 380 | (*str)[i] = (char)toupper((*str)[i]); |
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| 381 | } |
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[1505] | 382 | } |
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| 383 | |
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[2171] | 384 | /** |
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| 385 | @brief Returns a copy of the given string without lowercase chars. |
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| 386 | @param str The string |
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| 387 | @return The copy |
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| 388 | */ |
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| 389 | std::string getUppercase(const std::string& str) |
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| 390 | { |
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| 391 | std::string output = std::string(str); |
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| 392 | uppercase(&output); |
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| 393 | return output; |
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| 394 | } |
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[1505] | 395 | |
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[2171] | 396 | /** |
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| 397 | @brief Compares two strings ignoring different casing. |
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| 398 | @param s1 First string |
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| 399 | @param s2 Second string |
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| 400 | */ |
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| 401 | int nocaseCmp(const std::string& s1, const std::string& s2) |
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[1505] | 402 | { |
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[2171] | 403 | std::string::const_iterator it1=s1.begin(); |
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| 404 | std::string::const_iterator it2=s2.begin(); |
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| 405 | |
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| 406 | //stop when either string's end has been reached |
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| 407 | while ( (it1!=s1.end()) && (it2!=s2.end()) ) |
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| 408 | { |
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| 409 | if(::toupper(*it1) != ::toupper(*it2)) //letters differ? |
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| 410 | // return -1 to indicate smaller than, 1 otherwise |
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| 411 | return (::toupper(*it1) < ::toupper(*it2)) ? -1 : 1; |
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| 412 | //proceed to the next character in each string |
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| 413 | ++it1; |
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| 414 | ++it2; |
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| 415 | } |
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| 416 | size_t size1=s1.size(), size2=s2.size();// cache lengths |
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| 417 | //return -1,0 or 1 according to strings' lengths |
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| 418 | if (size1==size2) |
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| 419 | return 0; |
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| 420 | return (size1<size2) ? -1 : 1; |
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[1505] | 421 | } |
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| 422 | |
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| 423 | |
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[2171] | 424 | /** |
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| 425 | @brief Compares the first 'len' chars of two strings ignoring different casing. |
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| 426 | @param s1 First string |
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| 427 | @param s2 Second string |
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| 428 | @param len Maximal number of chars to compare |
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| 429 | */ |
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| 430 | int nocaseCmp(const std::string& s1, const std::string& s2, size_t len) |
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[1505] | 431 | { |
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[2171] | 432 | if (len == 0) |
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| 433 | return 0; |
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| 434 | std::string::const_iterator it1=s1.begin(); |
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| 435 | std::string::const_iterator it2=s2.begin(); |
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[1505] | 436 | |
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[2171] | 437 | //stop when either string's end has been reached |
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| 438 | while ( (it1!=s1.end()) && (it2!=s2.end()) && len-- > 0) |
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| 439 | { |
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| 440 | if(::toupper(*it1) != ::toupper(*it2)) //letters differ? |
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| 441 | // return -1 to indicate smaller than, 1 otherwise |
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| 442 | return (::toupper(*it1) < ::toupper(*it2)) ? -1 : 1; |
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| 443 | //proceed to the next character in each string |
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| 444 | ++it1; |
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| 445 | ++it2; |
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| 446 | } |
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[1505] | 447 | return 0; |
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[2171] | 448 | } |
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[1505] | 449 | |
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[2171] | 450 | /** |
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| 451 | @brief Returns true if the string contains a comment, introduced by #, %, ; or //. |
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| 452 | @param str The string |
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| 453 | @return True if the string contains a comment |
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| 454 | */ |
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| 455 | bool hasComment(const std::string& str) |
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[1505] | 456 | { |
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[2171] | 457 | return (getCommentPosition(str) != std::string::npos); |
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[1505] | 458 | } |
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| 459 | |
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[2171] | 460 | /** |
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| 461 | @brief If the string contains a comment, the comment gets returned (including the comment symbol), an empty string otherwise. |
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| 462 | @param str The string |
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| 463 | @return The comment |
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| 464 | */ |
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| 465 | std::string getComment(const std::string& str) |
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| 466 | { |
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| 467 | return str.substr(getCommentPosition(str)); |
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| 468 | } |
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[1505] | 469 | |
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[2171] | 470 | /** |
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| 471 | @brief If the string contains a comment, the position of the comment-symbol gets returned, std::string::npos otherwise. |
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| 472 | @param str The string |
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| 473 | @return The position |
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| 474 | */ |
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| 475 | size_t getCommentPosition(const std::string& str) |
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| 476 | { |
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| 477 | return getNextCommentPosition(str, 0); |
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| 478 | } |
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[1505] | 479 | |
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[2171] | 480 | /** |
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| 481 | @brief Returns the position of the next comment-symbol, starting with start. |
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| 482 | @param str The string |
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| 483 | @param start The startposition |
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| 484 | @return The position |
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| 485 | */ |
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| 486 | size_t getNextCommentPosition(const std::string& str, size_t start) |
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| 487 | { |
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| 488 | for (size_t i = start; i < str.size(); i++) |
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| 489 | if (isComment(str.substr(i))) |
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| 490 | return i; |
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[1505] | 491 | |
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[2171] | 492 | return std::string::npos; |
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| 493 | } |
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[1505] | 494 | } |
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