author | rubidium |
Thu, 01 Feb 2007 15:49:12 +0000 | |
changeset 5893 | 7e431a4abebb |
parent 5634 | ba6b9ebe197a |
child 6215 | bbd141b026b5 |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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#include "stdafx.h" |
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#include "openttd.h" |
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#include "functions.h" |
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#include "string.h" |
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#include "macros.h" |
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#include "table/control_codes.h" |
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(svn r8038) -Merge: the cpp branch. Effort of KUDr, Celestar, glx, Smoovius, stillunknown and pv2b.
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#include "helpers.hpp" |
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#include <stdarg.h> |
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#include <ctype.h> // required for tolower() |
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void ttd_strlcat(char *dst, const char *src, size_t size) |
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{ |
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assert(size > 0); |
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for (; size > 0 && *dst != '\0'; --size, ++dst) {} |
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assert(size > 0); |
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while (--size > 0 && *src != '\0') *dst++ = *src++; |
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*dst = '\0'; |
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} |
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void ttd_strlcpy(char *dst, const char *src, size_t size) |
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{ |
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assert(size > 0); |
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while (--size > 0 && *src != '\0') *dst++ = *src++; |
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*dst = '\0'; |
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} |
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char* strecat(char* dst, const char* src, const char* last) |
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{ |
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assert(dst <= last); |
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for (; *dst != '\0'; ++dst) |
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if (dst == last) return dst; |
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for (; *src != '\0' && dst != last; ++dst, ++src) *dst = *src; |
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*dst = '\0'; |
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return strecpy(dst, src, last); |
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} |
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char* strecpy(char* dst, const char* src, const char* last) |
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{ |
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assert(dst <= last); |
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for (; *src != '\0' && dst != last; ++dst, ++src) *dst = *src; |
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*dst = '\0'; |
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#if 1 |
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if (dst == last && *src != '\0') { |
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error("String too long for destination buffer"); |
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} |
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#endif |
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return dst; |
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} |
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char* CDECL str_fmt(const char* str, ...) |
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{ |
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char buf[4096]; |
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va_list va; |
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int len; |
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va_start(va, str); |
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len = vsnprintf(buf, lengthof(buf), str, va); |
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va_end(va); |
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char* p = MallocT<char>(len + 1); |
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if (p != NULL) memcpy(p, buf, len + 1); |
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return p; |
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} |
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void str_validate(char *str) |
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{ |
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char *dst = str; |
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WChar c; |
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size_t len; |
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|
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for (len = Utf8Decode(&c, str); c != '\0'; len = Utf8Decode(&c, str)) { |
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if (IsPrintable(c) && (c < SCC_SPRITE_START || c > SCC_SPRITE_END || |
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IsValidChar(c - SCC_SPRITE_START, CS_ALPHANUMERAL))) { |
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/* Copy the character back. Even if dst is current the same as str |
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* (i.e. no characters have been changed) this is quicker than |
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* moving the pointers ahead by len */ |
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do { |
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*dst++ = *str++; |
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} while (--len != 0); |
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} else { |
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/* Replace the undesirable character with a question mark */ |
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str += len; |
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*dst++ = '?'; |
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} |
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} |
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|
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*dst = '\0'; |
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} |
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|
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void str_strip_colours(char *str) |
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{ |
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char *dst = str; |
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WChar c; |
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size_t len; |
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103 |
|
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for (len = Utf8Decode(&c, str); c != '\0'; len = Utf8Decode(&c, str)) { |
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if (c < SCC_BLUE || c > SCC_BLACK) { |
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106 |
/* Copy the character back. Even if dst is current the same as str |
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107 |
* (i.e. no characters have been changed) this is quicker than |
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* moving the pointers ahead by len */ |
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109 |
do { |
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110 |
*dst++ = *str++; |
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} while (--len != 0); |
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112 |
} else { |
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113 |
/* Just skip (strip) the colour codes */ |
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str += len; |
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115 |
} |
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116 |
} |
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*dst = '\0'; |
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} |
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119 |
|
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120 |
/** Convert a given ASCII string to lowercase. |
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* NOTE: only support ASCII characters, no UTF8 fancy. As currently |
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* the function is only used to lowercase data-filenames if they are |
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* not found, this is sufficient. If more, or general functionality is |
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* needed, look to r7271 where it was removed because it was broken when |
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* using certain locales: eg in Turkish the uppercase 'I' was converted to |
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126 |
* '?', so just revert to the old functionality */ |
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void strtolower(char *str) |
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128 |
{ |
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for (; *str != '\0'; str++) *str = tolower(*str); |
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130 |
} |
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131 |
|
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132 |
/** |
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* Only allow certain keys. You can define the filter to be used. This makes |
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134 |
* sure no invalid keys can get into an editbox, like BELL. |
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* @param key character to be checked |
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* @param afilter the filter to use |
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* @return true or false depending if the character is printable/valid or not |
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138 |
*/ |
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139 |
bool IsValidChar(WChar key, CharSetFilter afilter) |
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140 |
{ |
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141 |
switch (afilter) { |
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case CS_ALPHANUMERAL: return IsPrintable(key); |
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case CS_NUMERAL: return (key >= '0' && key <= '9'); |
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case CS_ALPHA: return IsPrintable(key) && !(key >= '0' && key <= '9'); |
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145 |
} |
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146 |
|
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return false; |
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148 |
} |
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149 |
|
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150 |
#ifdef WIN32 |
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int CDECL snprintf(char *str, size_t size, const char *format, ...) |
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152 |
{ |
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153 |
va_list ap; |
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int ret; |
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155 |
|
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va_start(ap, format); |
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ret = vsnprintf(str, size, format, ap); |
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va_end(ap); |
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159 |
return ret; |
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160 |
} |
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161 |
|
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162 |
#ifdef _MSC_VER |
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163 |
/* *nprintf broken, not POSIX compliant, MSDN description |
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* - If len < count, then len characters are stored in buffer, a null-terminator is appended, and len is returned. |
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* - If len = count, then len characters are stored in buffer, no null-terminator is appended, and len is returned. |
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* - If len > count, then count characters are stored in buffer, no null-terminator is appended, and a negative value is returned |
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167 |
*/ |
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int CDECL vsnprintf(char *str, size_t size, const char *format, va_list ap) |
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169 |
{ |
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170 |
int ret; |
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ret = _vsnprintf(str, size, format, ap); |
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if (ret < 0 || ret == size) str[size - 1] = '\0'; |
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173 |
return ret; |
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174 |
} |
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175 |
#endif /* _MSC_VER */ |
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176 |
|
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177 |
#endif /* WIN32 */ |
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178 |
|
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179 |
|
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180 |
/** Convert the md5sum to a hexadecimal string representation |
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181 |
* @param buf buffer to put the md5sum into |
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182 |
* @param last last character of buffer (usually lastof(buf)) |
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183 |
* @param md5sum the md5sum itself |
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184 |
* @return a pointer to the next character after the md5sum */ |
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185 |
char *md5sumToString(char *buf, const char *last, const uint8 md5sum[16]) |
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186 |
{ |
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187 |
char *p = buf; |
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188 |
|
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189 |
for (uint i = 0; i < 16; i++) { |
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190 |
p += snprintf(p, last + 1 - p, "%02X", md5sum[i]); |
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191 |
if (p >= last) break; |
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192 |
} |
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193 |
|
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194 |
return p; |
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195 |
} |
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196 |
|
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197 |
|
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198 |
/* UTF-8 handling routines */ |
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199 |
|
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200 |
|
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201 |
/* Decode and consume the next UTF-8 encoded character |
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202 |
* @param c Buffer to place decoded character. |
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203 |
* @param s Character stream to retrieve character from. |
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204 |
* @return Number of characters in the sequence. |
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205 |
*/ |
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206 |
size_t Utf8Decode(WChar *c, const char *s) |
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207 |
{ |
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208 |
assert(c != NULL); |
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209 |
|
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210 |
if (!HASBIT(s[0], 7)) { |
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211 |
/* Single byte character: 0xxxxxxx */ |
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212 |
*c = s[0]; |
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213 |
return 1; |
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214 |
} else if (GB(s[0], 5, 3) == 6) { |
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215 |
if (IsUtf8Part(s[1])) { |
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216 |
/* Double byte character: 110xxxxx 10xxxxxx */ |
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217 |
*c = GB(s[0], 0, 5) << 6 | GB(s[1], 0, 6); |
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218 |
if (*c >= 0x80) return 2; |
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219 |
} |
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220 |
} else if (GB(s[0], 4, 4) == 14) { |
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221 |
if (IsUtf8Part(s[1]) && IsUtf8Part(s[2])) { |
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222 |
/* Triple byte character: 1110xxxx 10xxxxxx 10xxxxxx */ |
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223 |
*c = GB(s[0], 0, 4) << 12 | GB(s[1], 0, 6) << 6 | GB(s[2], 0, 6); |
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224 |
if (*c >= 0x800) return 3; |
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225 |
} |
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226 |
} else if (GB(s[0], 3, 5) == 30) { |
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if (IsUtf8Part(s[1]) && IsUtf8Part(s[2]) && IsUtf8Part(s[3])) { |
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/* 4 byte character: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */ |
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*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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if (*c >= 0x10000 && *c <= 0x10FFFF) return 4; |
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} |
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} |
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|
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//DEBUG(misc, 1, "[utf8] invalid UTF-8 sequence"); |
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*c = '?'; |
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return 1; |
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} |
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|
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|
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/* Encode a unicode character and place it in the buffer |
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* @param buf Buffer to place character. |
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* @param c Unicode character to encode. |
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* @return Number of characters in the encoded sequence. |
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*/ |
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size_t Utf8Encode(char *buf, WChar c) |
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{ |
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if (c < 0x80) { |
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*buf = c; |
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return 1; |
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} else if (c < 0x800) { |
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*buf++ = 0xC0 + GB(c, 6, 5); |
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*buf = 0x80 + GB(c, 0, 6); |
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return 2; |
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} else if (c < 0x10000) { |
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*buf++ = 0xE0 + GB(c, 12, 4); |
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*buf++ = 0x80 + GB(c, 6, 6); |
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*buf = 0x80 + GB(c, 0, 6); |
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return 3; |
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} else if (c < 0x110000) { |
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*buf++ = 0xF0 + GB(c, 18, 3); |
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*buf++ = 0x80 + GB(c, 12, 6); |
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*buf++ = 0x80 + GB(c, 6, 6); |
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*buf = 0x80 + GB(c, 0, 6); |
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return 4; |
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} |
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|
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//DEBUG(misc, 1, "[utf8] can't UTF-8 encode value 0x%X", c); |
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*buf = '?'; |
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return 1; |
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} |