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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 #if defined(STRGEN) || defined(SETTINGSGEN)
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
00168 char *CDECL str_fmt(const char *str, ...)
00169 {
00170 char buf[4096];
00171 va_list va;
00172
00173 va_start(va, str);
00174 int len = vseprintf(buf, lastof(buf), str, va);
00175 va_end(va);
00176 char *p = MallocT<char>(len + 1);
00177 memcpy(p, buf, len + 1);
00178 return p;
00179 }
00180
00181
00189 void str_validate(char *str, const char *last, StringValidationSettings settings)
00190 {
00191
00192
00193 char *dst = str;
00194 while (str <= last && *str != '\0') {
00195 size_t len = Utf8EncodedCharLen(*str);
00196
00197
00198
00199
00200
00201 if ((len == 0 && str + 4 > last) || str + len > last) break;
00202
00203 WChar c;
00204 len = Utf8Decode(&c, str);
00205
00206
00207
00208 if (c == '\0') break;
00209
00210 if ((IsPrintable(c) && (c < SCC_SPRITE_START || c > SCC_SPRITE_END)) || ((settings & SVS_ALLOW_CONTROL_CODE) != 0 && IsInsideMM(c, SCC_CONTROL_START, SCC_CONTROL_END))) {
00211
00212
00213
00214 do {
00215 *dst++ = *str++;
00216 } while (--len != 0);
00217 } else if ((settings & SVS_ALLOW_NEWLINE) != 0 && c == '\n') {
00218 *dst++ = *str++;
00219 } else {
00220 if ((settings & SVS_ALLOW_NEWLINE) != 0 && c == '\r' && str[1] == '\n') {
00221 str += len;
00222 continue;
00223 }
00224
00225 str += len;
00226 if ((settings & SVS_REPLACE_WITH_QUESTION_MARK) != 0) *dst++ = '?';
00227
00228
00229
00230
00231
00232 if (c == SCC_SETX) {
00233 str++;
00234 } else if (c == SCC_SETXY) {
00235 str += 2;
00236 }
00237 }
00238 }
00239
00240 *dst = '\0';
00241 }
00242
00250 bool StrValid(const char *str, const char *last)
00251 {
00252
00253
00254 while (str <= last && *str != '\0') {
00255 size_t len = Utf8EncodedCharLen(*str);
00256
00257
00258
00259
00260 if (len == 0 || str + len > last) return false;
00261
00262 WChar c;
00263 len = Utf8Decode(&c, str);
00264 if (!IsPrintable(c) || (c >= SCC_SPRITE_START && c <= SCC_SPRITE_END)) {
00265 return false;
00266 }
00267
00268 str += len;
00269 }
00270
00271 return *str == '\0';
00272 }
00273
00275 void str_strip_colours(char *str)
00276 {
00277 char *dst = str;
00278 WChar c;
00279 size_t len;
00280
00281 for (len = Utf8Decode(&c, str); c != '\0'; len = Utf8Decode(&c, str)) {
00282 if (c < SCC_BLUE || c > SCC_BLACK) {
00283
00284
00285
00286 do {
00287 *dst++ = *str++;
00288 } while (--len != 0);
00289 } else {
00290
00291 str += len;
00292 }
00293 }
00294 *dst = '\0';
00295 }
00296
00303 size_t Utf8StringLength(const char *s)
00304 {
00305 size_t len = 0;
00306 const char *t = s;
00307 while (Utf8Consume(&t) != 0) len++;
00308 return len;
00309 }
00310
00311
00323 bool strtolower(char *str)
00324 {
00325 bool changed = false;
00326 for (; *str != '\0'; str++) {
00327 char new_str = tolower(*str);
00328 changed |= new_str != *str;
00329 *str = new_str;
00330 }
00331 return changed;
00332 }
00333
00341 bool IsValidChar(WChar key, CharSetFilter afilter)
00342 {
00343 switch (afilter) {
00344 case CS_ALPHANUMERAL: return IsPrintable(key);
00345 case CS_NUMERAL: return (key >= '0' && key <= '9');
00346 case CS_NUMERAL_SPACE: return (key >= '0' && key <= '9') || key == ' ';
00347 case CS_ALPHA: return IsPrintable(key) && !(key >= '0' && key <= '9');
00348 case CS_HEXADECIMAL: return (key >= '0' && key <= '9') || (key >= 'a' && key <= 'f') || (key >= 'A' && key <= 'F');
00349 }
00350
00351 return false;
00352 }
00353
00354 #ifdef WIN32
00355
00356 #if (__MINGW32_MAJOR_VERSION < 3) || ((__MINGW32_MAJOR_VERSION == 3) && (__MINGW32_MINOR_VERSION < 14))
00357 int CDECL snprintf(char *str, size_t size, const char *format, ...)
00358 {
00359 va_list ap;
00360 int ret;
00361
00362 va_start(ap, format);
00363 ret = vsnprintf(str, size, format, ap);
00364 va_end(ap);
00365 return ret;
00366 }
00367 #endif
00368
00369 #ifdef _MSC_VER
00370
00377 int CDECL vsnprintf(char *str, size_t size, const char *format, va_list ap)
00378 {
00379 if (size == 0) return 0;
00380
00381 errno = 0;
00382 int ret = _vsnprintf(str, size, format, ap);
00383
00384 if (ret < 0) {
00385 if (errno != ERANGE) {
00386
00387
00388 NOT_REACHED();
00389 }
00390 } else if ((size_t)ret < size) {
00391
00392
00393
00394 return ret;
00395 }
00396
00397
00398
00399 str[size - 1] = '\0';
00400 return (int)size;
00401 }
00402 #endif
00403
00404 #endif
00405
00415 int CDECL seprintf(char *str, const char *last, const char *format, ...)
00416 {
00417 va_list ap;
00418
00419 va_start(ap, format);
00420 int ret = vseprintf(str, last, format, ap);
00421 va_end(ap);
00422 return ret;
00423 }
00424
00425
00433 char *md5sumToString(char *buf, const char *last, const uint8 md5sum[16])
00434 {
00435 char *p = buf;
00436
00437 for (uint i = 0; i < 16; i++) {
00438 p += seprintf(p, last, "%02X", md5sum[i]);
00439 }
00440
00441 return p;
00442 }
00443
00444
00445
00446
00447
00454 size_t Utf8Decode(WChar *c, const char *s)
00455 {
00456 assert(c != NULL);
00457
00458 if (!HasBit(s[0], 7)) {
00459
00460 *c = s[0];
00461 return 1;
00462 } else if (GB(s[0], 5, 3) == 6) {
00463 if (IsUtf8Part(s[1])) {
00464
00465 *c = GB(s[0], 0, 5) << 6 | GB(s[1], 0, 6);
00466 if (*c >= 0x80) return 2;
00467 }
00468 } else if (GB(s[0], 4, 4) == 14) {
00469 if (IsUtf8Part(s[1]) && IsUtf8Part(s[2])) {
00470
00471 *c = GB(s[0], 0, 4) << 12 | GB(s[1], 0, 6) << 6 | GB(s[2], 0, 6);
00472 if (*c >= 0x800) return 3;
00473 }
00474 } else if (GB(s[0], 3, 5) == 30) {
00475 if (IsUtf8Part(s[1]) && IsUtf8Part(s[2]) && IsUtf8Part(s[3])) {
00476
00477 *c = GB(s[0], 0, 3) << 18 | GB(s[1], 0, 6) << 12 | GB(s[2], 0, 6) << 6 | GB(s[3], 0, 6);
00478 if (*c >= 0x10000 && *c <= 0x10FFFF) return 4;
00479 }
00480 }
00481
00482
00483 *c = '?';
00484 return 1;
00485 }
00486
00487
00494 size_t Utf8Encode(char *buf, WChar c)
00495 {
00496 if (c < 0x80) {
00497 *buf = c;
00498 return 1;
00499 } else if (c < 0x800) {
00500 *buf++ = 0xC0 + GB(c, 6, 5);
00501 *buf = 0x80 + GB(c, 0, 6);
00502 return 2;
00503 } else if (c < 0x10000) {
00504 *buf++ = 0xE0 + GB(c, 12, 4);
00505 *buf++ = 0x80 + GB(c, 6, 6);
00506 *buf = 0x80 + GB(c, 0, 6);
00507 return 3;
00508 } else if (c < 0x110000) {
00509 *buf++ = 0xF0 + GB(c, 18, 3);
00510 *buf++ = 0x80 + GB(c, 12, 6);
00511 *buf++ = 0x80 + GB(c, 6, 6);
00512 *buf = 0x80 + GB(c, 0, 6);
00513 return 4;
00514 }
00515
00516
00517 *buf = '?';
00518 return 1;
00519 }
00520
00528 size_t Utf8TrimString(char *s, size_t maxlen)
00529 {
00530 size_t length = 0;
00531
00532 for (const char *ptr = strchr(s, '\0'); *s != '\0';) {
00533 size_t len = Utf8EncodedCharLen(*s);
00534
00535 if (len == 0) len = 1;
00536
00537
00538
00539 if (length + len >= maxlen || (s + len > ptr)) break;
00540 s += len;
00541 length += len;
00542 }
00543
00544 *s = '\0';
00545 return length;
00546 }
00547
00548 #ifdef DEFINE_STRNDUP
00549 #include "core/math_func.hpp"
00550 char *strndup(const char *s, size_t len)
00551 {
00552 len = min(strlen(s), len);
00553 char *tmp = CallocT<char>(len + 1);
00554 memcpy(tmp, s, len);
00555 return tmp;
00556 }
00557 #endif
00558
00559 #ifdef DEFINE_STRCASESTR
00560 char *strcasestr(const char *haystack, const char *needle)
00561 {
00562 size_t hay_len = strlen(haystack);
00563 size_t needle_len = strlen(needle);
00564 while (hay_len >= needle_len) {
00565 if (strncasecmp(haystack, needle, needle_len) == 0) return const_cast<char *>(haystack);
00566
00567 haystack++;
00568 hay_len--;
00569 }
00570
00571 return NULL;
00572 }
00573 #endif
00574
00582 int strnatcmp(const char *s1, const char *s2)
00583 {
00584 #ifdef WITH_ICU
00585 if (_current_collator != NULL) {
00586 UErrorCode status = U_ZERO_ERROR;
00587 int result;
00588
00589
00590 #if U_ICU_VERSION_MAJOR_NUM > 4 || (U_ICU_VERSION_MAJOR_NUM == 4 && U_ICU_VERSION_MINOR_NUM >= 2)
00591
00592 result = _current_collator->compareUTF8(s1, s2, status);
00593 #else
00594 UChar buffer1[DRAW_STRING_BUFFER];
00595 u_strFromUTF8Lenient(buffer1, lengthof(buffer1), NULL, s1, -1, &status);
00596 UChar buffer2[DRAW_STRING_BUFFER];
00597 u_strFromUTF8Lenient(buffer2, lengthof(buffer2), NULL, s2, -1, &status);
00598
00599 result = _current_collator->compare(buffer1, buffer2, status);
00600 #endif
00601 if (U_SUCCESS(status)) return result;
00602 }
00603
00604 #endif
00605
00606
00607 return strcasecmp(s1, s2);
00608 }