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annotate src/string.cpp @ 6420:080aae477331 draft

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(svn r9556) -Documentation: doxygen and comment-style changes. 'R', 'S'.. The end of the preliminary work is near
author belugas <belugas@openttd.org>
date Wed, 04 Apr 2007 01:35:16 +0000
parents a51753c89fad
children 0cbe7df2b293
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rev   line source
5584
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1 /* $Id$ */
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2
6420
080aae477331 (svn r9556) -Documentation: doxygen and comment-style changes. 'R', 'S'.. The end of the preliminary work is near
belugas <belugas@openttd.org>
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3 /** @file string.cpp */
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4
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5 #include "stdafx.h"
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6 #include "openttd.h"
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7 #include "functions.h"
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8 #include "string.h"
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9 #include "macros.h"
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10 #include "table/control_codes.h"
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11 #include "helpers.hpp"
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13 #include <stdarg.h>
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14 #include <ctype.h> // required for tolower()
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16 void ttd_strlcat(char *dst, const char *src, size_t size)
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17 {
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18 assert(size > 0);
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19 for (; size > 0 && *dst != '\0'; --size, ++dst) {}
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20 assert(size > 0);
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21 while (--size > 0 && *src != '\0') *dst++ = *src++;
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22 *dst = '\0';
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23 }
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26 void ttd_strlcpy(char *dst, const char *src, size_t size)
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27 {
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28 assert(size > 0);
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29 while (--size > 0 && *src != '\0') *dst++ = *src++;
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30 *dst = '\0';
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31 }
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34 char* strecat(char* dst, const char* src, const char* last)
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35 {
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36 assert(dst <= last);
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37 for (; *dst != '\0'; ++dst)
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38 if (dst == last) return dst;
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39 for (; *src != '\0' && dst != last; ++dst, ++src) *dst = *src;
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40 *dst = '\0';
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41 return strecpy(dst, src, last);
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42 }
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43
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45 char* strecpy(char* dst, const char* src, const char* last)
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46 {
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47 assert(dst <= last);
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48 for (; *src != '\0' && dst != last; ++dst, ++src) *dst = *src;
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49 *dst = '\0';
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50 #if 1
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51 if (dst == last && *src != '\0') {
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52 error("String too long for destination buffer");
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53 }
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54 #endif
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55 return dst;
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56 }
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57
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59 char* CDECL str_fmt(const char* str, ...)
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60 {
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61 char buf[4096];
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62 va_list va;
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63 int len;
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64
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65 va_start(va, str);
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66 len = vsnprintf(buf, lengthof(buf), str, va);
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67 va_end(va);
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68 char* p = MallocT<char>(len + 1);
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69 if (p != NULL) memcpy(p, buf, len + 1);
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70 return p;
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71 }
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74 void str_validate(char *str)
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75 {
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76 char *dst = str;
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77 WChar c;
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78 size_t len;
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79
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80 for (len = Utf8Decode(&c, str); c != '\0'; len = Utf8Decode(&c, str)) {
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81 if (IsPrintable(c) && (c < SCC_SPRITE_START || c > SCC_SPRITE_END ||
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82 IsValidChar(c - SCC_SPRITE_START, CS_ALPHANUMERAL))) {
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83 /* Copy the character back. Even if dst is current the same as str
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84 * (i.e. no characters have been changed) this is quicker than
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85 * moving the pointers ahead by len */
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86 do {
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87 *dst++ = *str++;
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88 } while (--len != 0);
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89 } else {
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90 /* Replace the undesirable character with a question mark */
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91 str += len;
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92 *dst++ = '?';
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93 }
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94 }
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95
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96 *dst = '\0';
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97 }
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98
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99
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100 void str_strip_colours(char *str)
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101 {
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102 char *dst = str;
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103 WChar c;
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104 size_t len;
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105
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106 for (len = Utf8Decode(&c, str); c != '\0'; len = Utf8Decode(&c, str)) {
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107 if (c < SCC_BLUE || c > SCC_BLACK) {
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108 /* Copy the character back. Even if dst is current the same as str
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109 * (i.e. no characters have been changed) this is quicker than
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110 * moving the pointers ahead by len */
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111 do {
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KUDr <KUDr@openttd.org>
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112 *dst++ = *str++;
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113 } while (--len != 0);
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114 } else {
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115 /* Just skip (strip) the colour codes */
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116 str += len;
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117 }
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118 }
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119 *dst = '\0';
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120 }
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121
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122 /** Convert a given ASCII string to lowercase.
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123 * NOTE: only support ASCII characters, no UTF8 fancy. As currently
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124 * the function is only used to lowercase data-filenames if they are
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125 * not found, this is sufficient. If more, or general functionality is
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126 * needed, look to r7271 where it was removed because it was broken when
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127 * using certain locales: eg in Turkish the uppercase 'I' was converted to
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128 * '?', so just revert to the old functionality
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129 * @param str string to convert */
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130 void strtolower(char *str)
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131 {
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132 for (; *str != '\0'; str++) *str = tolower(*str);
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133 }
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134
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135 /**
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136 * Only allow certain keys. You can define the filter to be used. This makes
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137 * sure no invalid keys can get into an editbox, like BELL.
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138 * @param key character to be checked
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139 * @param afilter the filter to use
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140 * @return true or false depending if the character is printable/valid or not
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141 */
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142 bool IsValidChar(WChar key, CharSetFilter afilter)
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143 {
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144 switch (afilter) {
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145 case CS_ALPHANUMERAL: return IsPrintable(key);
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146 case CS_NUMERAL: return (key >= '0' && key <= '9');
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KUDr <KUDr@openttd.org>
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147 case CS_ALPHA: return IsPrintable(key) && !(key >= '0' && key <= '9');
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148 }
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149
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150 return false;
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151 }
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152
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153 #ifdef WIN32
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154 int CDECL snprintf(char *str, size_t size, const char *format, ...)
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155 {
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156 va_list ap;
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157 int ret;
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158
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159 va_start(ap, format);
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160 ret = vsnprintf(str, size, format, ap);
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161 va_end(ap);
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162 return ret;
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163 }
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164
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165 #ifdef _MSC_VER
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166 /* *nprintf broken, not POSIX compliant, MSDN description
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167 * - If len < count, then len characters are stored in buffer, a null-terminator is appended, and len is returned.
e33e8fe4c97d (svn r8089) -[win32] MS-borkedness: All *nprintf functions are broken, but we didn't test to fix it ourselves when 'len = count'.
Darkvater <Darkvater@openttd.org>
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168 * - If len = count, then len characters are stored in buffer, no null-terminator is appended, and len is returned.
e33e8fe4c97d (svn r8089) -[win32] MS-borkedness: All *nprintf functions are broken, but we didn't test to fix it ourselves when 'len = count'.
Darkvater <Darkvater@openttd.org>
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169 * - If len > count, then count characters are stored in buffer, no null-terminator is appended, and a negative value is returned
e33e8fe4c97d (svn r8089) -[win32] MS-borkedness: All *nprintf functions are broken, but we didn't test to fix it ourselves when 'len = count'.
Darkvater <Darkvater@openttd.org>
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170 */
5584
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171 int CDECL vsnprintf(char *str, size_t size, const char *format, va_list ap)
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172 {
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173 int ret;
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174 ret = _vsnprintf(str, size, format, ap);
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Darkvater <Darkvater@openttd.org>
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175 if (ret < 0 || ret == size) str[size - 1] = '\0';
5584
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176 return ret;
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177 }
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178 #endif /* _MSC_VER */
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179
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180 #endif /* WIN32 */
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181
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182
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183 /** Convert the md5sum to a hexadecimal string representation
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184 * @param buf buffer to put the md5sum into
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185 * @param last last character of buffer (usually lastof(buf))
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186 * @param md5sum the md5sum itself
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187 * @return a pointer to the next character after the md5sum */
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Darkvater <Darkvater@openttd.org>
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188 char *md5sumToString(char *buf, const char *last, const uint8 md5sum[16])
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189 {
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190 char *p = buf;
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191
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Darkvater <Darkvater@openttd.org>
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192 for (uint i = 0; i < 16; i++) {
395bfe9e1f77 (svn r8093) -Codechange: Add a function to get a string representation of an MD5SUM and use it.
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193 p += snprintf(p, last + 1 - p, "%02X", md5sum[i]);
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194 if (p >= last) break;
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195 }
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196
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197 return p;
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198 }
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199
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200
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201 /* UTF-8 handling routines */
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202
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203
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204 /* Decode and consume the next UTF-8 encoded character
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205 * @param c Buffer to place decoded character.
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206 * @param s Character stream to retrieve character from.
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207 * @return Number of characters in the sequence.
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208 */
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209 size_t Utf8Decode(WChar *c, const char *s)
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210 {
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211 assert(c != NULL);
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212
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213 if (!HASBIT(s[0], 7)) {
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214 /* Single byte character: 0xxxxxxx */
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diff changeset
215 *c = s[0];
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KUDr <KUDr@openttd.org>
parents:
diff changeset
216 return 1;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
217 } else if (GB(s[0], 5, 3) == 6) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
218 if (IsUtf8Part(s[1])) {
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parents:
diff changeset
219 /* Double byte character: 110xxxxx 10xxxxxx */
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KUDr <KUDr@openttd.org>
parents:
diff changeset
220 *c = GB(s[0], 0, 5) << 6 | GB(s[1], 0, 6);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
221 if (*c >= 0x80) return 2;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
222 }
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KUDr <KUDr@openttd.org>
parents:
diff changeset
223 } else if (GB(s[0], 4, 4) == 14) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
224 if (IsUtf8Part(s[1]) && IsUtf8Part(s[2])) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
225 /* Triple byte character: 1110xxxx 10xxxxxx 10xxxxxx */
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KUDr <KUDr@openttd.org>
parents:
diff changeset
226 *c = GB(s[0], 0, 4) << 12 | GB(s[1], 0, 6) << 6 | GB(s[2], 0, 6);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
227 if (*c >= 0x800) return 3;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
228 }
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KUDr <KUDr@openttd.org>
parents:
diff changeset
229 } else if (GB(s[0], 3, 5) == 30) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
230 if (IsUtf8Part(s[1]) && IsUtf8Part(s[2]) && IsUtf8Part(s[3])) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
231 /* 4 byte character: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
232 *c = GB(s[0], 0, 3) << 18 | GB(s[1], 0, 6) << 12 | GB(s[2], 0, 6) << 6 | GB(s[3], 0, 6);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
233 if (*c >= 0x10000 && *c <= 0x10FFFF) return 4;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
234 }
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KUDr <KUDr@openttd.org>
parents:
diff changeset
235 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
236
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KUDr <KUDr@openttd.org>
parents:
diff changeset
237 //DEBUG(misc, 1, "[utf8] invalid UTF-8 sequence");
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KUDr <KUDr@openttd.org>
parents:
diff changeset
238 *c = '?';
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KUDr <KUDr@openttd.org>
parents:
diff changeset
239 return 1;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
240 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
241
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
242
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
243 /* Encode a unicode character and place it in the buffer
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parents:
diff changeset
244 * @param buf Buffer to place character.
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KUDr <KUDr@openttd.org>
parents:
diff changeset
245 * @param c Unicode character to encode.
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KUDr <KUDr@openttd.org>
parents:
diff changeset
246 * @return Number of characters in the encoded sequence.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
247 */
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KUDr <KUDr@openttd.org>
parents:
diff changeset
248 size_t Utf8Encode(char *buf, WChar c)
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KUDr <KUDr@openttd.org>
parents:
diff changeset
249 {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
250 if (c < 0x80) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
251 *buf = c;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
252 return 1;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
253 } else if (c < 0x800) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
254 *buf++ = 0xC0 + GB(c, 6, 5);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
255 *buf = 0x80 + GB(c, 0, 6);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
256 return 2;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
257 } else if (c < 0x10000) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
258 *buf++ = 0xE0 + GB(c, 12, 4);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
259 *buf++ = 0x80 + GB(c, 6, 6);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
260 *buf = 0x80 + GB(c, 0, 6);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
261 return 3;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
262 } else if (c < 0x110000) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
263 *buf++ = 0xF0 + GB(c, 18, 3);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
264 *buf++ = 0x80 + GB(c, 12, 6);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
265 *buf++ = 0x80 + GB(c, 6, 6);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
266 *buf = 0x80 + GB(c, 0, 6);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
267 return 4;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
268 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
269
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KUDr <KUDr@openttd.org>
parents:
diff changeset
270 //DEBUG(misc, 1, "[utf8] can't UTF-8 encode value 0x%X", c);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
271 *buf = '?';
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
272 return 1;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
273 }
6215
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
274
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
275 /**
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
276 * Properly terminate an UTF8 string to some maximum length
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
277 * @param s string to check if it needs additional trimming
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
278 * @param maxlen the maximum length the buffer can have.
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
279 * @return the new length in bytes of the string (eg. strlen(new_string))
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
280 * @NOTE maxlen is the string length _INCLUDING_ the terminating '\0'
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
281 */
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
282 size_t Utf8TrimString(char *s, size_t maxlen)
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
283 {
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
284 size_t length = 0;
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
285
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
286 for (const char *ptr = strchr(s, '\0'); *s != '\0';) {
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
287 size_t len = Utf8EncodedCharLen(*s);
6274
a51753c89fad (svn r9083) -Codechange: Be more lenient when trimming UTF-8 strings and don't terminate the string when an invalid encoding is encountered, but only focus on maximum length.
Darkvater <Darkvater@openttd.org>
parents: 6218
diff changeset
288 /* Silently ignore invalid UTF8 sequences, our only concern trimming */
a51753c89fad (svn r9083) -Codechange: Be more lenient when trimming UTF-8 strings and don't terminate the string when an invalid encoding is encountered, but only focus on maximum length.
Darkvater <Darkvater@openttd.org>
parents: 6218
diff changeset
289 if (len == 0) len = 1;
6215
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
290
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
291 /* Take care when a hard cutoff was made for the string and
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
292 * the last UTF8 sequence is invalid */
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
293 if (length + len >= maxlen || (s + len > ptr)) break;
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
294 s += len;
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
295 length += len;
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
296 }
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
297
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
298 *s = '\0';
8e906f3312ec (svn r9012) -Fix/Feature (UTF8): When cutting strings into multiple lines also take into consideration whitespace characters of more than 1 byte length (eg IDEOGRAPHIC SPACE, IsWhitespace() function). When trimming such strings, account for multiple-byte long sequences so use *Utf8PrevChar(v) = '\0'.
Darkvater <Darkvater@openttd.org>
parents: 5634
diff changeset
299 return length;
6218
937dd20781cd (svn r9015) -Fix
tron <tron@openttd.org>
parents: 6215
diff changeset
300 }