00001
00002
00003
00004
00005
00006
00007
00008
00009
00012 #include "stdafx.h"
00013 #include "debug.h"
00014 #include "core/alloc_func.hpp"
00015 #include "core/math_func.hpp"
00016 #include "string_func.h"
00017
00018 #include "table/control_codes.h"
00019
00020 #include <stdarg.h>
00021 #include <ctype.h>
00022
00023 #ifdef _MSC_VER
00024 #include <errno.h>
00025 #endif
00026
00027 #ifdef WITH_ICU
00028
00029 #include <unicode/ustring.h>
00030 #include "language.h"
00031 #include "gfx_func.h"
00032 #endif
00033
00044 static int CDECL vseprintf(char *str, const char *last, const char *format, va_list ap)
00045 {
00046 ptrdiff_t diff = last - str;
00047 if (diff < 0) return 0;
00048 return min((int)diff, vsnprintf(str, diff + 1, format, ap));
00049 }
00050
00065 void ttd_strlcat(char *dst, const char *src, size_t size)
00066 {
00067 assert(size > 0);
00068 while (size > 0 && *dst != '\0') {
00069 size--;
00070 dst++;
00071 }
00072
00073 ttd_strlcpy(dst, src, size);
00074 }
00075
00076
00091 void ttd_strlcpy(char *dst, const char *src, size_t size)
00092 {
00093 assert(size > 0);
00094 while (--size > 0 && *src != '\0') {
00095 *dst++ = *src++;
00096 }
00097 *dst = '\0';
00098 }
00099
00100
00117 char *strecat(char *dst, const char *src, const char *last)
00118 {
00119 assert(dst <= last);
00120 while (*dst != '\0') {
00121 if (dst == last) return dst;
00122 dst++;
00123 }
00124
00125 return strecpy(dst, src, last);
00126 }
00127
00128
00145 char *strecpy(char *dst, const char *src, const char *last)
00146 {
00147 assert(dst <= last);
00148 while (dst != last && *src != '\0') {
00149 *dst++ = *src++;
00150 }
00151 *dst = '\0';
00152
00153 if (dst == last && *src != '\0') {
00154 #ifdef STRGEN
00155 error("String too long for destination buffer");
00156 #else
00157 DEBUG(misc, 0, "String too long for destination buffer");
00158 #endif
00159 }
00160 return dst;
00161 }
00162
00163
00164 char *CDECL str_fmt(const char *str, ...)
00165 {
00166 char buf[4096];
00167 va_list va;
00168
00169 va_start(va, str);
00170 int len = vseprintf(buf, lastof(buf), str, va);
00171 va_end(va);
00172 char *p = MallocT<char>(len + 1);
00173 memcpy(p, buf, len + 1);
00174 return p;
00175 }
00176
00177
00186 void str_validate(char *str, const char *last, bool allow_newlines, bool ignore)
00187 {
00188
00189
00190 char *dst = str;
00191 while (str <= last && *str != '\0') {
00192 size_t len = Utf8EncodedCharLen(*str);
00193
00194
00195
00196
00197
00198 if ((len == 0 && str + 4 > last) || str + len > last) break;
00199
00200 WChar c;
00201 len = Utf8Decode(&c, str);
00202
00203
00204
00205 if (c == '\0') break;
00206
00207 if (IsPrintable(c) && (c < SCC_SPRITE_START || c > SCC_SPRITE_END)) {
00208
00209
00210
00211 do {
00212 *dst++ = *str++;
00213 } while (--len != 0);
00214 } else if (allow_newlines && c == '\n') {
00215 *dst++ = *str++;
00216 } else {
00217 if (allow_newlines && c == '\r' && str[1] == '\n') {
00218 str += len;
00219 continue;
00220 }
00221
00222 str += len;
00223 if (!ignore) *dst++ = '?';
00224
00225
00226
00227
00228
00229 if (c == SCC_SETX) {
00230 str++;
00231 } else if (c == SCC_SETXY) {
00232 str += 2;
00233 }
00234 }
00235 }
00236
00237 *dst = '\0';
00238 }
00239
00247 bool StrValid(const char *str, const char *last)
00248 {
00249
00250
00251 while (str <= last && *str != '\0') {
00252 size_t len = Utf8EncodedCharLen(*str);
00253
00254
00255
00256
00257 if (len == 0 || str + len > last) return false;
00258
00259 WChar c;
00260 len = Utf8Decode(&c, str);
00261 if (!IsPrintable(c) || (c >= SCC_SPRITE_START && c <= SCC_SPRITE_END)) {
00262 return false;
00263 }
00264
00265 str += len;
00266 }
00267
00268 return *str == '\0';
00269 }
00270
00272 void str_strip_colours(char *str)
00273 {
00274 char *dst = str;
00275 WChar c;
00276 size_t len;
00277
00278 for (len = Utf8Decode(&c, str); c != '\0'; len = Utf8Decode(&c, str)) {
00279 if (c < SCC_BLUE || c > SCC_BLACK) {
00280
00281
00282
00283 do {
00284 *dst++ = *str++;
00285 } while (--len != 0);
00286 } else {
00287
00288 str += len;
00289 }
00290 }
00291 *dst = '\0';
00292 }
00293
00300 size_t Utf8StringLength(const char *s)
00301 {
00302 size_t len = 0;
00303 const char *t = s;
00304 while (Utf8Consume(&t) != 0) len++;
00305 return len;
00306 }
00307
00308
00319 void strtolower(char *str)
00320 {
00321 for (; *str != '\0'; str++) *str = tolower(*str);
00322 }
00323
00331 bool IsValidChar(WChar key, CharSetFilter afilter)
00332 {
00333 switch (afilter) {
00334 case CS_ALPHANUMERAL: return IsPrintable(key);
00335 case CS_NUMERAL: return (key >= '0' && key <= '9');
00336 case CS_NUMERAL_SPACE: return (key >= '0' && key <= '9') || key == ' ';
00337 case CS_ALPHA: return IsPrintable(key) && !(key >= '0' && key <= '9');
00338 case CS_HEXADECIMAL: return (key >= '0' && key <= '9') || (key >= 'a' && key <= 'f') || (key >= 'A' && key <= 'F');
00339 }
00340
00341 return false;
00342 }
00343
00344 #ifdef WIN32
00345
00346 #if (__MINGW32_MAJOR_VERSION < 3) || ((__MINGW32_MAJOR_VERSION == 3) && (__MINGW32_MINOR_VERSION < 14))
00347 int CDECL snprintf(char *str, size_t size, const char *format, ...)
00348 {
00349 va_list ap;
00350 int ret;
00351
00352 va_start(ap, format);
00353 ret = vsnprintf(str, size, format, ap);
00354 va_end(ap);
00355 return ret;
00356 }
00357 #endif
00358
00359 #ifdef _MSC_VER
00360
00367 int CDECL vsnprintf(char *str, size_t size, const char *format, va_list ap)
00368 {
00369 if (size == 0) return 0;
00370
00371 errno = 0;
00372 int ret = _vsnprintf(str, size, format, ap);
00373
00374 if (ret < 0) {
00375 if (errno != ERANGE) {
00376
00377
00378 NOT_REACHED();
00379 }
00380 } else if ((size_t)ret < size) {
00381
00382
00383
00384 return ret;
00385 }
00386
00387
00388
00389 str[size - 1] = '\0';
00390 return (int)size;
00391 }
00392 #endif
00393
00394 #endif
00395
00405 int CDECL seprintf(char *str, const char *last, const char *format, ...)
00406 {
00407 va_list ap;
00408
00409 va_start(ap, format);
00410 int ret = vseprintf(str, last, format, ap);
00411 va_end(ap);
00412 return ret;
00413 }
00414
00415
00423 char *md5sumToString(char *buf, const char *last, const uint8 md5sum[16])
00424 {
00425 char *p = buf;
00426
00427 for (uint i = 0; i < 16; i++) {
00428 p += seprintf(p, last, "%02X", md5sum[i]);
00429 }
00430
00431 return p;
00432 }
00433
00434
00435
00436
00437
00444 size_t Utf8Decode(WChar *c, const char *s)
00445 {
00446 assert(c != NULL);
00447
00448 if (!HasBit(s[0], 7)) {
00449
00450 *c = s[0];
00451 return 1;
00452 } else if (GB(s[0], 5, 3) == 6) {
00453 if (IsUtf8Part(s[1])) {
00454
00455 *c = GB(s[0], 0, 5) << 6 | GB(s[1], 0, 6);
00456 if (*c >= 0x80) return 2;
00457 }
00458 } else if (GB(s[0], 4, 4) == 14) {
00459 if (IsUtf8Part(s[1]) && IsUtf8Part(s[2])) {
00460
00461 *c = GB(s[0], 0, 4) << 12 | GB(s[1], 0, 6) << 6 | GB(s[2], 0, 6);
00462 if (*c >= 0x800) return 3;
00463 }
00464 } else if (GB(s[0], 3, 5) == 30) {
00465 if (IsUtf8Part(s[1]) && IsUtf8Part(s[2]) && IsUtf8Part(s[3])) {
00466
00467 *c = GB(s[0], 0, 3) << 18 | GB(s[1], 0, 6) << 12 | GB(s[2], 0, 6) << 6 | GB(s[3], 0, 6);
00468 if (*c >= 0x10000 && *c <= 0x10FFFF) return 4;
00469 }
00470 }
00471
00472
00473 *c = '?';
00474 return 1;
00475 }
00476
00477
00484 size_t Utf8Encode(char *buf, WChar c)
00485 {
00486 if (c < 0x80) {
00487 *buf = c;
00488 return 1;
00489 } else if (c < 0x800) {
00490 *buf++ = 0xC0 + GB(c, 6, 5);
00491 *buf = 0x80 + GB(c, 0, 6);
00492 return 2;
00493 } else if (c < 0x10000) {
00494 *buf++ = 0xE0 + GB(c, 12, 4);
00495 *buf++ = 0x80 + GB(c, 6, 6);
00496 *buf = 0x80 + GB(c, 0, 6);
00497 return 3;
00498 } else if (c < 0x110000) {
00499 *buf++ = 0xF0 + GB(c, 18, 3);
00500 *buf++ = 0x80 + GB(c, 12, 6);
00501 *buf++ = 0x80 + GB(c, 6, 6);
00502 *buf = 0x80 + GB(c, 0, 6);
00503 return 4;
00504 }
00505
00506
00507 *buf = '?';
00508 return 1;
00509 }
00510
00518 size_t Utf8TrimString(char *s, size_t maxlen)
00519 {
00520 size_t length = 0;
00521
00522 for (const char *ptr = strchr(s, '\0'); *s != '\0';) {
00523 size_t len = Utf8EncodedCharLen(*s);
00524
00525 if (len == 0) len = 1;
00526
00527
00528
00529 if (length + len >= maxlen || (s + len > ptr)) break;
00530 s += len;
00531 length += len;
00532 }
00533
00534 *s = '\0';
00535 return length;
00536 }
00537
00538 #ifdef DEFINE_STRNDUP
00539 #include "core/math_func.hpp"
00540 char *strndup(const char *s, size_t len)
00541 {
00542 len = min(strlen(s), len);
00543 char *tmp = CallocT<char>(len + 1);
00544 memcpy(tmp, s, len);
00545 return tmp;
00546 }
00547 #endif
00548
00549 #ifdef DEFINE_STRCASESTR
00550 char *strcasestr(const char *haystack, const char *needle)
00551 {
00552 size_t hay_len = strlen(haystack);
00553 size_t needle_len = strlen(needle);
00554 while (hay_len >= needle_len) {
00555 if (strncasecmp(haystack, needle, needle_len) == 0) return const_cast<char *>(haystack);
00556
00557 haystack++;
00558 hay_len--;
00559 }
00560
00561 return NULL;
00562 }
00563 #endif
00564
00572 int strnatcmp(const char *s1, const char *s2)
00573 {
00574 #ifdef WITH_ICU
00575 if (_current_collator != NULL) {
00576 UErrorCode status = U_ZERO_ERROR;
00577 int result;
00578
00579
00580 #if U_ICU_VERSION_MAJOR_NUM > 4 || (U_ICU_VERSION_MAJOR_NUM == 4 && U_ICU_VERSION_MINOR_NUM >= 2)
00581
00582 result = _current_collator->compareUTF8(s1, s2, status);
00583 #else
00584 UChar buffer1[DRAW_STRING_BUFFER];
00585 u_strFromUTF8Lenient(buffer1, lengthof(buffer1), NULL, s1, -1, &status);
00586 UChar buffer2[DRAW_STRING_BUFFER];
00587 u_strFromUTF8Lenient(buffer2, lengthof(buffer2), NULL, s2, -1, &status);
00588
00589 result = _current_collator->compare(buffer1, buffer2, status);
00590 #endif
00591 if (U_SUCCESS(status)) return result;
00592 }
00593
00594 #endif
00595
00596
00597 return strcasecmp(s1, s2);
00598 }