00001
00002
00005 #include "stdafx.h"
00006 #include "debug.h"
00007 #include "core/alloc_func.hpp"
00008 #include "core/math_func.hpp"
00009 #include "string_func.h"
00010
00011 #include "table/control_codes.h"
00012
00013 #include <stdarg.h>
00014 #include <ctype.h>
00015
00026 static int CDECL vseprintf(char *str, const char *last, const char *format, va_list ap)
00027 {
00028 if (str >= last) return 0;
00029 size_t size = last - str;
00030 return min((int)size, vsnprintf(str, size, format, ap));
00031 }
00032
00033 void ttd_strlcat(char *dst, const char *src, size_t size)
00034 {
00035 assert(size > 0);
00036 while (size > 0 && *dst != '\0') {
00037 size--;
00038 dst++;
00039 }
00040
00041 ttd_strlcpy(dst, src, size);
00042 }
00043
00044
00045 void ttd_strlcpy(char *dst, const char *src, size_t size)
00046 {
00047 assert(size > 0);
00048 while (--size > 0 && *src != '\0') {
00049 *dst++ = *src++;
00050 }
00051 *dst = '\0';
00052 }
00053
00054
00055 char *strecat(char *dst, const char *src, const char *last)
00056 {
00057 assert(dst <= last);
00058 while (*dst != '\0') {
00059 if (dst == last) return dst;
00060 dst++;
00061 }
00062
00063 return strecpy(dst, src, last);
00064 }
00065
00066
00067 char *strecpy(char *dst, const char *src, const char *last)
00068 {
00069 assert(dst <= last);
00070 while (dst != last && *src != '\0') {
00071 *dst++ = *src++;
00072 }
00073 *dst = '\0';
00074
00075 if (dst == last && *src != '\0') {
00076 #ifdef STRGEN
00077 error("String too long for destination buffer");
00078 #else
00079 DEBUG(misc, 0, "String too long for destination buffer");
00080 #endif
00081 }
00082 return dst;
00083 }
00084
00085
00086 char *CDECL str_fmt(const char *str, ...)
00087 {
00088 char buf[4096];
00089 va_list va;
00090
00091 va_start(va, str);
00092 int len = vseprintf(buf, lastof(buf), str, va);
00093 va_end(va);
00094 char *p = MallocT<char>(len + 1);
00095 memcpy(p, buf, len + 1);
00096 return p;
00097 }
00098
00099
00100 void str_validate(char *str, bool allow_newlines, bool ignore)
00101 {
00102 char *dst = str;
00103 WChar c;
00104 size_t len;
00105
00106 for (len = Utf8Decode(&c, str); c != '\0'; len = Utf8Decode(&c, str)) {
00107 if (IsPrintable(c) && (c < SCC_SPRITE_START || c > SCC_SPRITE_END ||
00108 IsValidChar(c - SCC_SPRITE_START, CS_ALPHANUMERAL))) {
00109
00110
00111
00112 do {
00113 *dst++ = *str++;
00114 } while (--len != 0);
00115 } else if (allow_newlines && c == '\n') {
00116 *dst++ = *str++;
00117 } else {
00118 if (allow_newlines && c == '\r' && str[1] == '\n') {
00119 str += len;
00120 continue;
00121 }
00122 assert(c != '\r');
00123
00124 str += len;
00125 if (!ignore) *dst++ = '?';
00126 }
00127 }
00128
00129 *dst = '\0';
00130 }
00131
00132
00133 void str_strip_colours(char *str)
00134 {
00135 char *dst = str;
00136 WChar c;
00137 size_t len;
00138
00139 for (len = Utf8Decode(&c, str); c != '\0'; len = Utf8Decode(&c, str)) {
00140 if (c < SCC_BLUE || c > SCC_BLACK) {
00141
00142
00143
00144 do {
00145 *dst++ = *str++;
00146 } while (--len != 0);
00147 } else {
00148
00149 str += len;
00150 }
00151 }
00152 *dst = '\0';
00153 }
00154
00163 void strtolower(char *str)
00164 {
00165 for (; *str != '\0'; str++) *str = tolower(*str);
00166 }
00167
00175 bool IsValidChar(WChar key, CharSetFilter afilter)
00176 {
00177 switch (afilter) {
00178 case CS_ALPHANUMERAL: return IsPrintable(key);
00179 case CS_NUMERAL: return (key >= '0' && key <= '9');
00180 case CS_ALPHA: return IsPrintable(key) && !(key >= '0' && key <= '9');
00181 }
00182
00183 return false;
00184 }
00185
00186 #ifdef WIN32
00187
00188 #if (__MINGW32_MAJOR_VERSION < 3) || ((__MINGW32_MAJOR_VERSION == 3) && (__MINGW32_MINOR_VERSION < 14))
00189 int CDECL snprintf(char *str, size_t size, const char *format, ...)
00190 {
00191 va_list ap;
00192 int ret;
00193
00194 va_start(ap, format);
00195 ret = vsnprintf(str, size, format, ap);
00196 va_end(ap);
00197 return ret;
00198 }
00199 #endif
00200
00201 #ifdef _MSC_VER
00202
00203
00204
00205
00206
00207 int CDECL vsnprintf(char *str, size_t size, const char *format, va_list ap)
00208 {
00209 int ret;
00210 ret = _vsnprintf(str, size, format, ap);
00211 if (ret < 0 || ret == size) str[size - 1] = '\0';
00212 return ret;
00213 }
00214 #endif
00215
00216 #endif
00217
00227 int CDECL seprintf(char *str, const char *last, const char *format, ...)
00228 {
00229 va_list ap;
00230
00231 va_start(ap, format);
00232 int ret = vseprintf(str, last, format, ap);
00233 va_end(ap);
00234 return ret;
00235 }
00236
00237
00243 char *md5sumToString(char *buf, const char *last, const uint8 md5sum[16])
00244 {
00245 char *p = buf;
00246
00247 for (uint i = 0; i < 16; i++) {
00248 p += seprintf(p, last, "%02X", md5sum[i]);
00249 }
00250
00251 return p;
00252 }
00253
00254
00255
00256
00257
00258
00259
00260
00261
00262
00263 size_t Utf8Decode(WChar *c, const char *s)
00264 {
00265 assert(c != NULL);
00266
00267 if (!HasBit(s[0], 7)) {
00268
00269 *c = s[0];
00270 return 1;
00271 } else if (GB(s[0], 5, 3) == 6) {
00272 if (IsUtf8Part(s[1])) {
00273
00274 *c = GB(s[0], 0, 5) << 6 | GB(s[1], 0, 6);
00275 if (*c >= 0x80) return 2;
00276 }
00277 } else if (GB(s[0], 4, 4) == 14) {
00278 if (IsUtf8Part(s[1]) && IsUtf8Part(s[2])) {
00279
00280 *c = GB(s[0], 0, 4) << 12 | GB(s[1], 0, 6) << 6 | GB(s[2], 0, 6);
00281 if (*c >= 0x800) return 3;
00282 }
00283 } else if (GB(s[0], 3, 5) == 30) {
00284 if (IsUtf8Part(s[1]) && IsUtf8Part(s[2]) && IsUtf8Part(s[3])) {
00285
00286 *c = GB(s[0], 0, 3) << 18 | GB(s[1], 0, 6) << 12 | GB(s[2], 0, 6) << 6 | GB(s[3], 0, 6);
00287 if (*c >= 0x10000 && *c <= 0x10FFFF) return 4;
00288 }
00289 }
00290
00291
00292 *c = '?';
00293 return 1;
00294 }
00295
00296
00297
00298
00299
00300
00301
00302 size_t Utf8Encode(char *buf, WChar c)
00303 {
00304 if (c < 0x80) {
00305 *buf = c;
00306 return 1;
00307 } else if (c < 0x800) {
00308 *buf++ = 0xC0 + GB(c, 6, 5);
00309 *buf = 0x80 + GB(c, 0, 6);
00310 return 2;
00311 } else if (c < 0x10000) {
00312 *buf++ = 0xE0 + GB(c, 12, 4);
00313 *buf++ = 0x80 + GB(c, 6, 6);
00314 *buf = 0x80 + GB(c, 0, 6);
00315 return 3;
00316 } else if (c < 0x110000) {
00317 *buf++ = 0xF0 + GB(c, 18, 3);
00318 *buf++ = 0x80 + GB(c, 12, 6);
00319 *buf++ = 0x80 + GB(c, 6, 6);
00320 *buf = 0x80 + GB(c, 0, 6);
00321 return 4;
00322 }
00323
00324
00325 *buf = '?';
00326 return 1;
00327 }
00328
00336 size_t Utf8TrimString(char *s, size_t maxlen)
00337 {
00338 size_t length = 0;
00339
00340 for (const char *ptr = strchr(s, '\0'); *s != '\0';) {
00341 size_t len = Utf8EncodedCharLen(*s);
00342
00343 if (len == 0) len = 1;
00344
00345
00346
00347 if (length + len >= maxlen || (s + len > ptr)) break;
00348 s += len;
00349 length += len;
00350 }
00351
00352 *s = '\0';
00353 return length;
00354 }
00355
00356 #ifndef _GNU_SOURCE
00357 #include "core/math_func.hpp"
00358 char *strndup(const char *s, size_t len)
00359 {
00360 len = min(strlen(s), len);
00361 char *tmp = CallocT<char>(len + 1);
00362 memcpy(tmp, s, len);
00363 return tmp;
00364 }
00365 #endif
00366
00367 #ifdef DEFINE_STRCASESTR
00368 const char *strcasestr(const char *haystack, const char *needle)
00369 {
00370 size_t hay_len = strlen(haystack);
00371 size_t needle_len = strlen(needle);
00372 while (hay_len >= needle_len) {
00373 if (strncasecmp(haystack, needle, needle_len) == 0) return haystack;
00374
00375 haystack++;
00376 hay_len--;
00377 }
00378
00379 return NULL;
00380 }
00381 #endif