# strgen.cpp

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    00001 /* $Id$ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #include "../stdafx.h"
    00013 #include "../core/alloc_func.hpp"
    00014 #include "../core/endian_func.hpp"
    00015 #include "../string_func.h"
    00016 #include "../strings_type.h"
    00017 #include "strgen.h"
    00018 #include "../table/control_codes.h"
    00019
    00020 #include <stdarg.h>
    00021
    00022 #if (!defined(WIN32) && !defined(WIN64)) || defined(__CYGWIN__)
    00023 #include <unistd.h>
    00024 #include <sys/stat.h>
    00025 #endif
    00026
    00027 #if defined WIN32 || defined __WATCOMC__
    00028 #include <direct.h>
    00029 #endif /* WIN32 || __WATCOMC__ */
    00030
    00031 #ifdef __MORPHOS__
    00032 #ifdef stderr
    00033 #undef stderr
    00034 #endif
    00035 #define stderr stdout
    00036 #endif /* __MORPHOS__ */
    00037
    00038 #include "../table/strgen_tables.h"
    00039
    00040 /* Compiles a list of strings into a compiled string list */
    00041
    00042 struct Case {
    00043   int caseidx;
    00044   char *string;
    00045   Case *next;
    00046 };
    00047
    00048 static bool _masterlang;
    00049 static bool _translated;
    00050 static bool _translation;
    00051 static const char *_file = "(unknown file)";
    00052 static int _cur_line;
    00053 static int _errors, _warnings, _show_todo;
    00054
    00055 struct LangString {
    00056   char *name;            // Name of the string
    00057   char *english;         // English text
    00058   char *translated;      // Translated text
    00059   uint16 hash_next;      // next hash entry
    00060   uint16 index;
    00061   int line;              // line of string in source-file
    00062   Case *english_case;    // cases for english
    00063   Case *translated_case; // cases for foreign
    00064 };
    00065
    00066 static LangString *_strings[65536];
    00067
    00068
    00069 #define HASH_SIZE 32767
    00070 static uint16 _hash_head[HASH_SIZE];
    00071
    00072 static byte _put_buf[4096];
    00073 static int _put_pos;
    00074 static int _next_string_id;
    00075
    00076 static uint32 _hash;
    00077 static char _lang_name[32], _lang_ownname[32], _lang_isocode[16];
    00078 static char _lang_digit_group_separator[8];
    00079 static char _lang_digit_group_separator_currency[8];
    00080 static char _lang_digit_decimal_separator[8];
    00081 static byte _lang_pluralform;
    00082 static byte _lang_textdir;
    00083 static uint16 _lang_winlangid;
    00084 static uint8 _lang_newgrflangid;
    00085 #define MAX_NUM_GENDER 8
    00086 static char _genders[MAX_NUM_GENDER][16];
    00087 static uint _numgenders;
    00088
    00089 /* contains the name of all cases. */
    00090 #define MAX_NUM_CASES 50
    00091 static char _cases[MAX_NUM_CASES][16];
    00092 static uint _numcases;
    00093
    00094 static const char *_cur_ident;
    00095
    00096 struct CmdPair {
    00097   const CmdStruct *a;
    00098   const char *v;
    00099 };
    00100
    00101 struct ParsedCommandStruct {
    00102   uint np;
    00103   CmdPair pairs[32];
    00104   const CmdStruct *cmd[32]; // ordered by param #
    00105 };
    00106
    00107 /* Used when generating some advanced commands. */
    00108 static ParsedCommandStruct _cur_pcs;
    00109 static int _cur_argidx;
    00110
    00111 static uint HashStr(const char *s)
    00112 {
    00113   uint hash = 0;
    00114   for (; *s != '\0'; s++) hash = ROL(hash, 3) ^ *s;
    00115   return hash % HASH_SIZE;
    00116 }
    00117
    00118 static void HashAdd(const char *s, LangString *ls)
    00119 {
    00120   uint hash = HashStr(s);
    00121   ls->hash_next = _hash_head[hash];
    00122   _hash_head[hash] = ls->index + 1;
    00123 }
    00124
    00125 static LangString *HashFind(const char *s)
    00126 {
    00127   int idx = _hash_head[HashStr(s)];
    00128
    00129   while (--idx >= 0) {
    00130     LangString *ls = _strings[idx];
    00131
    00132     if (strcmp(ls->name, s) == 0) return ls;
    00133     idx = ls->hash_next;
    00134   }
    00135   return NULL;
    00136 }
    00137
    00138 #ifdef _MSC_VER
    00139 # define LINE_NUM_FMT "(%d)"
    00140 #else
    00141 # define LINE_NUM_FMT ":%d"
    00142 #endif
    00143
    00144 static void CDECL strgen_warning(const char *s, ...) WARN_FORMAT(1, 2);
    00145
    00146 static void CDECL strgen_warning(const char *s, ...)
    00147 {
    00148   char buf[1024];
    00149   va_list va;
    00150   va_start(va, s);
    00151   vsnprintf(buf, lengthof(buf), s, va);
    00152   va_end(va);
    00153   fprintf(stderr, "%s" LINE_NUM_FMT ": warning: %s\n", _file, _cur_line, buf);
    00154   _warnings++;
    00155 }
    00156
    00157 static void CDECL strgen_error(const char *s, ...) WARN_FORMAT(1, 2);
    00158
    00159 static void CDECL strgen_error(const char *s, ...)
    00160 {
    00161   char buf[1024];
    00162   va_list va;
    00163   va_start(va, s);
    00164   vsnprintf(buf, lengthof(buf), s, va);
    00165   va_end(va);
    00166   fprintf(stderr, "%s" LINE_NUM_FMT ": error: %s\n", _file, _cur_line, buf);
    00167   _errors++;
    00168 }
    00169
    00170 void NORETURN CDECL error(const char *s, ...)
    00171 {
    00172   char buf[1024];
    00173   va_list va;
    00174   va_start(va, s);
    00175   vsnprintf(buf, lengthof(buf), s, va);
    00176   va_end(va);
    00177   fprintf(stderr, "%s" LINE_NUM_FMT ": FATAL: %s\n", _file, _cur_line, buf);
    00178   exit(1);
    00179 }
    00180
    00181 static void PutByte(byte c)
    00182 {
    00183   if (_put_pos == lengthof(_put_buf)) error("Put buffer too small");
    00184   _put_buf[_put_pos++] = c;
    00185 }
    00186
    00187
    00188 static void PutUtf8(uint32 value)
    00189 {
    00190   if (value < 0x80) {
    00191     PutByte(value);
    00192   } else if (value < 0x800) {
    00193     PutByte(0xC0 + GB(value,  6, 5));
    00194     PutByte(0x80 + GB(value,  0, 6));
    00195   } else if (value < 0x10000) {
    00196     PutByte(0xE0 + GB(value, 12, 4));
    00197     PutByte(0x80 + GB(value,  6, 6));
    00198     PutByte(0x80 + GB(value,  0, 6));
    00199   } else if (value < 0x110000) {
    00200     PutByte(0xF0 + GB(value, 18, 3));
    00201     PutByte(0x80 + GB(value, 12, 6));
    00202     PutByte(0x80 + GB(value,  6, 6));
    00203     PutByte(0x80 + GB(value,  0, 6));
    00204   } else {
    00205     strgen_warning("Invalid unicode value U+0x%X", value);
    00206   }
    00207 }
    00208
    00209
    00210 size_t Utf8Validate(const char *s)
    00211 {
    00212   uint32 c;
    00213
    00214   if (!HasBit(s[0], 7)) {
    00215     /* 1 byte */
    00216     return 1;
    00217   } else if (GB(s[0], 5, 3) == 6 && IsUtf8Part(s[1])) {
    00218     /* 2 bytes */
    00219     c = GB(s[0], 0, 5) << 6 | GB(s[1], 0, 6);
    00220     if (c >= 0x80) return 2;
    00221   } else if (GB(s[0], 4, 4) == 14 && IsUtf8Part(s[1]) && IsUtf8Part(s[2])) {
    00222     /* 3 bytes */
    00223     c = GB(s[0], 0, 4) << 12 | GB(s[1], 0, 6) << 6 | GB(s[2], 0, 6);
    00224     if (c >= 0x800) return 3;
    00225   } else if (GB(s[0], 3, 5) == 30 && IsUtf8Part(s[1]) && IsUtf8Part(s[2]) && IsUtf8Part(s[3])) {
    00226     /* 4 bytes */
    00227     c = GB(s[0], 0, 3) << 18 | GB(s[1], 0, 6) << 12 | GB(s[2], 0, 6) << 6 | GB(s[3], 0, 6);
    00228     if (c >= 0x10000 && c <= 0x10FFFF) return 4;
    00229   }
    00230
    00231   return 0;
    00232 }
    00233
    00234
    00235 static void EmitSingleChar(char *buf, int value)
    00236 {
    00237   if (*buf != '\0') strgen_warning("Ignoring trailing letters in command");
    00238   PutUtf8(value);
    00239 }
    00240
    00241
    00242 /* The plural specifier looks like
    00243  * {NUM} {PLURAL -1 passenger passengers} then it picks either passenger/passengers depending on the count in NUM */
    00244
    00245 /* This is encoded like
    00246  *  CommandByte <ARG#> <NUM> {Length of each string} {each string} */
    00247
    00248 bool ParseRelNum(char **buf, int *value, int *offset)
    00249 {
    00250   const char *s = *buf;
    00251   char *end;
    00252   bool rel = false;
    00253
    00254   while (*s == ' ' || *s == '\t') s++;
    00255   if (*s == '+') {
    00256     rel = true;
    00257     s++;
    00258   }
    00259   int v = strtol(s, &end, 0);
    00260   if (end == s) return false;
    00261   if (rel || v < 0) {
    00262     *value += v;
    00263   } else {
    00264     *value = v;
    00265   }
    00266   if (offset != NULL && *end == ':') {
    00267     /* Take the Nth within */
    00268     s = end + 1;
    00269     *offset = strtol(s, &end, 0);
    00270     if (end == s) return false;
    00271   }
    00272   *buf = end;
    00273   return true;
    00274 }
    00275
    00276 /* Parse out the next word, or NULL */
    00277 char *ParseWord(char **buf)
    00278 {
    00279   char *s = *buf, *r;
    00280
    00281   while (*s == ' ' || *s == '\t') s++;
    00282   if (*s == '\0') return NULL;
    00283
    00284   if (*s == '"') {
    00285     r = ++s;
    00286     /* parse until next " or NUL */
    00287     for (;;) {
    00288       if (*s == '\0') break;
    00289       if (*s == '"') {
    00290         *s++ = '\0';
    00291         break;
    00292       }
    00293       s++;
    00294     }
    00295   } else {
    00296     /* proceed until whitespace or NUL */
    00297     r = s;
    00298     for (;;) {
    00299       if (*s == '\0') break;
    00300       if (*s == ' ' || *s == '\t') {
    00301         *s++ = '\0';
    00302         break;
    00303       }
    00304       s++;
    00305     }
    00306   }
    00307   *buf = s;
    00308   return r;
    00309 }
    00310
    00311 /* Forward declaration */
    00312 static int TranslateArgumentIdx(int arg, int offset = 0);
    00313
    00314 static void EmitWordList(const char * const *words, uint nw)
    00315 {
    00316   PutByte(nw);
    00317   for (uint i = 0; i < nw; i++) PutByte(strlen(words[i]) + 1);
    00318   for (uint i = 0; i < nw; i++) {
    00319     for (uint j = 0; words[i][j] != '\0'; j++) PutByte(words[i][j]);
    00320     PutByte(0);
    00321   }
    00322 }
    00323
    00324 static void EmitPlural(char *buf, int value)
    00325 {
    00326   int argidx = _cur_argidx;
    00327   int offset = 0;
    00328   const char *words[5];
    00329   int nw = 0;
    00330
    00331   /* Parse out the number, if one exists. Otherwise default to prev arg. */
    00332   if (!ParseRelNum(&buf, &argidx, &offset)) argidx--;
    00333
    00334   /* Parse each string */
    00335   for (nw = 0; nw < 5; nw++) {
    00336     words[nw] = ParseWord(&buf);
    00337     if (words[nw] == NULL) break;
    00338   }
    00339
    00340   if (nw == 0) {
    00341     error("%s: No plural words", _cur_ident);
    00342   }
    00343
    00344   if (_plural_forms[_lang_pluralform].plural_count != nw) {
    00345     if (_translated) {
    00346       error("%s: Invalid number of plural forms. Expecting %d, found %d.", _cur_ident,
    00347         _plural_forms[_lang_pluralform].plural_count, nw);
    00348     } else {
    00349       if ((_show_todo & 2) != 0) strgen_warning("'%s' is untranslated. Tweaking english string to allow compilation for plural forms", _cur_ident);
    00350       if (nw > _plural_forms[_lang_pluralform].plural_count) {
    00351         nw = _plural_forms[_lang_pluralform].plural_count;
    00352       } else {
    00353         for (; nw < _plural_forms[_lang_pluralform].plural_count; nw++) {
    00354           words[nw] = words[nw - 1];
    00355         }
    00356       }
    00357     }
    00358   }
    00359
    00360   PutUtf8(SCC_PLURAL_LIST);
    00361   PutByte(TranslateArgumentIdx(argidx, offset));
    00362   EmitWordList(words, nw);
    00363 }
    00364
    00365
    00366 static void EmitGender(char *buf, int value)
    00367 {
    00368   int argidx = _cur_argidx;
    00369   int offset = 0;
    00370   uint nw;
    00371
    00372   if (buf[0] == '=') {
    00373     buf++;
    00374
    00375     /* This is a {G=DER} command */
    00376     for (nw = 0; ; nw++) {
    00377       if (nw >= MAX_NUM_GENDER) error("G argument '%s' invalid", buf);
    00378       if (strcmp(buf, _genders[nw]) == 0) break;
    00379     }
    00380     /* now nw contains the gender index */
    00381     PutUtf8(SCC_GENDER_INDEX);
    00382     PutByte(nw);
    00383   } else {
    00384     const char *words[MAX_NUM_GENDER];
    00385
    00386     /* This is a {G 0 foo bar two} command.
    00387      * If no relative number exists, default to +0 */
    00388     if (!ParseRelNum(&buf, &argidx, &offset)) {}
    00389
    00390     for (nw = 0; nw < MAX_NUM_GENDER; nw++) {
    00391       words[nw] = ParseWord(&buf);
    00392       if (words[nw] == NULL) break;
    00393     }
    00394     if (nw != _numgenders) error("Bad # of arguments for gender command");
    00395     PutUtf8(SCC_GENDER_LIST);
    00396     PutByte(TranslateArgumentIdx(argidx, offset));
    00397     EmitWordList(words, nw);
    00398   }
    00399 }
    00400
    00401 static const CmdStruct *FindCmd(const char *s, int len)
    00402 {
    00403   for (const CmdStruct *cs = _cmd_structs; cs != endof(_cmd_structs); cs++) {
    00404     if (strncmp(cs->cmd, s, len) == 0 && cs->cmd[len] == '\0') return cs;
    00405   }
    00406   return NULL;
    00407 }
    00408
    00409 static uint ResolveCaseName(const char *str, uint len)
    00410 {
    00411   for (uint i = 0; i < MAX_NUM_CASES; i++) {
    00412     if (memcmp(_cases[i], str, len) == 0 && _cases[i][len] == 0) return i + 1;
    00413   }
    00414   error("Invalid case-name '%s'", str);
    00415 }
    00416
    00417
    00418 /* returns NULL on eof
    00419  * else returns command struct */
    00420 static const CmdStruct *ParseCommandString(const char **str, char *param, int *argno, int *casei)
    00421 {
    00422   const char *s = *str, *start;
    00423   char c;
    00424
    00425   *argno = -1;
    00426   *casei = -1;
    00427
    00428   /* Scan to the next command, exit if there's no next command. */
    00429   for (; *s != '{'; s++) {
    00430     if (*s == '\0') return NULL;
    00431   }
    00432   s++; // Skip past the {
    00433
    00434   if (*s >= '0' && *s <= '9') {
    00435     char *end;
    00436
    00437     *argno = strtoul(s, &end, 0);
    00438     if (*end != ':') error("missing arg #");
    00439     s = end + 1;
    00440   }
    00441
    00442   /* parse command name */
    00443   start = s;
    00444   do {
    00445     c = *s++;
    00446   } while (c != '}' && c != ' ' && c != '=' && c != '.' && c != 0);
    00447
    00448   const CmdStruct *cmd = FindCmd(start, s - start - 1);
    00449   if (cmd == NULL) {
    00450     strgen_error("Undefined command '%.*s'", (int)(s - start - 1), start);
    00451     return NULL;
    00452   }
    00453
    00454   if (c == '.') {
    00455     const char *casep = s;
    00456
    00457     if (!(cmd->flags & C_CASE)) {
    00458       error("Command '%s' can't have a case", cmd->cmd);
    00459     }
    00460
    00461     do {
    00462       c = *s++;
    00463     } while (c != '}' && c != ' ' && c != '\0');
    00464     *casei = ResolveCaseName(casep, s - casep - 1);
    00465   }
    00466
    00467   if (c == '\0') {
    00468     strgen_error("Missing } from command '%s'", start);
    00469     return NULL;
    00470   }
    00471
    00472
    00473   if (c != '}') {
    00474     if (c == '=') s--;
    00475     /* copy params */
    00476     start = s;
    00477     for (;;) {
    00478       c = *s++;
    00479       if (c == '}') break;
    00480       if (c == '\0') {
    00481         strgen_error("Missing } from command '%s'", start);
    00482         return NULL;
    00483       }
    00484       if (s - start == 250) error("param command too long");
    00485       *param++ = c;
    00486     }
    00487   }
    00488   *param = '\0';
    00489
    00490   *str = s;
    00491
    00492   return cmd;
    00493 }
    00494
    00495
    00496 static void HandlePragma(char *str)
    00497 {
    00498   if (!memcmp(str, "id ", 3)) {
    00499     _next_string_id = strtoul(str + 3, NULL, 0);
    00500   } else if (!memcmp(str, "name ", 5)) {
    00501     strecpy(_lang_name, str + 5, lastof(_lang_name));
    00502   } else if (!memcmp(str, "ownname ", 8)) {
    00503     strecpy(_lang_ownname, str + 8, lastof(_lang_ownname));
    00504   } else if (!memcmp(str, "isocode ", 8)) {
    00505     strecpy(_lang_isocode, str + 8, lastof(_lang_isocode));
    00506   } else if (!memcmp(str, "plural ", 7)) {
    00507     _lang_pluralform = atoi(str + 7);
    00508     if (_lang_pluralform >= lengthof(_plural_forms))
    00509       error("Invalid pluralform %d", _lang_pluralform);
    00510   } else if (!memcmp(str, "textdir ", 8)) {
    00511     if (!memcmp(str + 8, "ltr", 3)) {
    00512       _lang_textdir = TD_LTR;
    00513     } else if (!memcmp(str + 8, "rtl", 3)) {
    00514       _lang_textdir = TD_RTL;
    00515     } else {
    00516       error("Invalid textdir %s", str + 8);
    00517     }
    00518   } else if (!memcmp(str, "digitsep ", 9)) {
    00519     str += 9;
    00520     strecpy(_lang_digit_group_separator, strcmp(str, "{NBSP}") == 0 ? "\xC2\xA0" : str, lastof(_lang_digit_group_separator));
    00521   } else if (!memcmp(str, "digitsepcur ", 12)) {
    00522     str += 12;
    00523     strecpy(_lang_digit_group_separator_currency, strcmp(str, "{NBSP}") == 0 ? "\xC2\xA0" : str, lastof(_lang_digit_group_separator_currency));
    00524   } else if (!memcmp(str, "decimalsep ", 11)) {
    00525     str += 11;
    00526     strecpy(_lang_digit_decimal_separator, strcmp(str, "{NBSP}") == 0 ? "\xC2\xA0" : str, lastof(_lang_digit_decimal_separator));
    00527   } else if (!memcmp(str, "winlangid ", 10)) {
    00528     const char *buf = str + 10;
    00529     long langid = strtol(buf, NULL, 16);
    00530     if (langid > (long)UINT16_MAX || langid < 0) {
    00531       error("Invalid winlangid %s", buf);
    00532     }
    00533     _lang_winlangid = (uint16)langid;
    00534   } else if (!memcmp(str, "grflangid ", 10)) {
    00535     const char *buf = str + 10;
    00536     long langid = strtol(buf, NULL, 16);
    00537     if (langid >= 0x7F || langid < 0) {
    00538       error("Invalid grflangid %s", buf);
    00539     }
    00540     _lang_newgrflangid = (uint8)langid;
    00541   } else if (!memcmp(str, "gender ", 7)) {
    00542     char *buf = str + 7;
    00543
    00544     for (;;) {
    00545       const char *s = ParseWord(&buf);
    00546
    00547       if (s == NULL) break;
    00548       if (_numgenders >= MAX_NUM_GENDER) error("Too many genders, max %d", MAX_NUM_GENDER);
    00549       strecpy(_genders[_numgenders], s, lastof(_genders[_numgenders]));
    00550       _numgenders++;
    00551     }
    00552   } else if (!memcmp(str, "case ", 5)) {
    00553     char *buf = str + 5;
    00554
    00555     for (;;) {
    00556       const char *s = ParseWord(&buf);
    00557
    00558       if (s == NULL) break;
    00559       if (_numcases >= MAX_NUM_CASES) error("Too many cases, max %d", MAX_NUM_CASES);
    00560       strecpy(_cases[_numcases], s, lastof(_cases[_numcases]));
    00561       _numcases++;
    00562     }
    00563   } else {
    00564     error("unknown pragma '%s'", str);
    00565   }
    00566 }
    00567
    00568 static void ExtractCommandString(ParsedCommandStruct *p, const char *s, bool warnings)
    00569 {
    00570   char param[100];
    00571   int argno;
    00572   int argidx = 0;
    00573   int casei;
    00574
    00575   memset(p, 0, sizeof(*p));
    00576
    00577   for (;;) {
    00578     /* read until next command from a. */
    00579     const CmdStruct *ar = ParseCommandString(&s, param, &argno, &casei);
    00580
    00581     if (ar == NULL) break;
    00582
    00583     /* Sanity checking */
    00584     if (argno != -1 && ar->consumes == 0) error("Non consumer param can't have a paramindex");
    00585
    00586     if (ar->consumes) {
    00587       if (argno != -1) argidx = argno;
    00588       if (argidx < 0 || (uint)argidx >= lengthof(p->cmd)) error("invalid param idx %d", argidx);
    00589       if (p->cmd[argidx] != NULL && p->cmd[argidx] != ar) error("duplicate param idx %d", argidx);
    00590
    00591       p->cmd[argidx++] = ar;
    00592     } else if (!(ar->flags & C_DONTCOUNT)) { // Ignore some of them
    00593       if (p->np >= lengthof(p->pairs)) error("too many commands in string, max " PRINTF_SIZE, lengthof(p->pairs));
    00594       p->pairs[p->np].a = ar;
    00595       p->pairs[p->np].v = param[0] != '\0' ? strdup(param) : "";
    00596       p->np++;
    00597     }
    00598   }
    00599 }
    00600
    00601
    00602 static const CmdStruct *TranslateCmdForCompare(const CmdStruct *a)
    00603 {
    00604   if (a == NULL) return NULL;
    00605
    00606   if (strcmp(a->cmd, "STRING1") == 0 ||
    00607       strcmp(a->cmd, "STRING2") == 0 ||
    00608       strcmp(a->cmd, "STRING3") == 0 ||
    00609       strcmp(a->cmd, "STRING4") == 0 ||
    00610       strcmp(a->cmd, "STRING5") == 0 ||
    00611       strcmp(a->cmd, "RAW_STRING") == 0) {
    00612     return FindCmd("STRING", 6);
    00613   }
    00614
    00615   return a;
    00616 }
    00617
    00618
    00619 static bool CheckCommandsMatch(char *a, char *b, const char *name)
    00620 {
    00621   /* If we're not translating, i.e. we're compiling the base language,
    00622    * it is pointless to do all these checks as it'll always be correct.
    00623    * After all, all checks are based on the base language.
    00624    */
    00625   if (!_translation) return true;
    00626
    00627   ParsedCommandStruct templ;
    00628   ParsedCommandStruct lang;
    00629   bool result = true;
    00630
    00631   ExtractCommandString(&templ, b, true);
    00632   ExtractCommandString(&lang, a, true);
    00633
    00634   /* For each string in templ, see if we find it in lang */
    00635   if (templ.np != lang.np) {
    00636     strgen_warning("%s: template string and language string have a different # of commands", name);
    00637     result = false;
    00638   }
    00639
    00640   for (uint i = 0; i < templ.np; i++) {
    00641     /* see if we find it in lang, and zero it out */
    00642     bool found = false;
    00643     for (uint j = 0; j < lang.np; j++) {
    00644       if (templ.pairs[i].a == lang.pairs[j].a &&
    00645           strcmp(templ.pairs[i].v, lang.pairs[j].v) == 0) {
    00646         /* it was found in both. zero it out from lang so we don't find it again */
    00647         lang.pairs[j].a = NULL;
    00648         found = true;
    00649         break;
    00650       }
    00651     }
    00652
    00653     if (!found) {
    00654       strgen_warning("%s: command '%s' exists in template file but not in language file", name, templ.pairs[i].a->cmd);
    00655       result = false;
    00656     }
    00657   }
    00658
    00659   /* if we reach here, all non consumer commands match up.
    00660    * Check if the non consumer commands match up also. */
    00661   for (uint i = 0; i < lengthof(templ.cmd); i++) {
    00662     if (TranslateCmdForCompare(templ.cmd[i]) != lang.cmd[i]) {
    00663       strgen_warning("%s: Param idx #%d '%s' doesn't match with template command '%s'", name, i,
    00664         lang.cmd[i]  == NULL ? "<empty>" : TranslateCmdForCompare(lang.cmd[i])->cmd,
    00665         templ.cmd[i] == NULL ? "<empty>" : templ.cmd[i]->cmd);
    00666       result = false;
    00667     }
    00668   }
    00669
    00670   return result;
    00671 }
    00672
    00673 static void HandleString(char *str, bool master)
    00674 {
    00675   if (*str == '#') {
    00676     if (str[1] == '#' && str[2] != '#') HandlePragma(str + 2);
    00677     return;
    00678   }
    00679
    00680   /* Ignore comments & blank lines */
    00681   if (*str == ';' || *str == ' ' || *str == '\0') return;
    00682
    00683   char *s = strchr(str, ':');
    00684   if (s == NULL) {
    00685     strgen_error("Line has no ':' delimiter");
    00686     return;
    00687   }
    00688
    00689   char *t;
    00690   /* Trim spaces.
    00691    * After this str points to the command name, and s points to the command contents */
    00692   for (t = s; t > str && (t[-1] == ' ' || t[-1] == '\t'); t--) {}
    00693   *t = 0;
    00694   s++;
    00695
    00696   /* Check string is valid UTF-8 */
    00697   const char *tmp;
    00698   for (tmp = s; *tmp != '\0';) {
    00699     size_t len = Utf8Validate(tmp);
    00700     if (len == 0) error("Invalid UTF-8 sequence in '%s'", s);
    00701     tmp += len;
    00702   }
    00703
    00704   /* Check if the string has a case..
    00705    * The syntax for cases is IDENTNAME.case */
    00706   char *casep = strchr(str, '.');
    00707   if (casep) *casep++ = '\0';
    00708
    00709   /* Check if this string already exists.. */
    00710   LangString *ent = HashFind(str);
    00711
    00712   if (master) {
    00713     if (ent != NULL && casep == NULL) {
    00714       strgen_error("String name '%s' is used multiple times", str);
    00715       return;
    00716     }
    00717
    00718     if (ent == NULL && casep != NULL) {
    00719       strgen_error("Base string name '%s' doesn't exist yet. Define it before defining a case.", str);
    00720       return;
    00721     }
    00722
    00723     if (ent == NULL) {
    00724       if (_strings[_next_string_id]) {
    00725         strgen_error("String ID 0x%X for '%s' already in use by '%s'", _next_string_id, str, _strings[_next_string_id]->name);
    00726         return;
    00727       }
    00728
    00729       /* Allocate a new LangString */
    00730       ent = CallocT<LangString>(1);
    00731       _strings[_next_string_id] = ent;
    00732       ent->index = _next_string_id++;
    00733       ent->name = strdup(str);
    00734       ent->line = _cur_line;
    00735
    00736       HashAdd(str, ent);
    00737     }
    00738
    00739     if (casep != NULL) {
    00740       Case *c = MallocT<Case>(1);
    00741
    00742       c->caseidx = ResolveCaseName(casep, strlen(casep));
    00743       c->string = strdup(s);
    00744       c->next = ent->english_case;
    00745       ent->english_case = c;
    00746     } else {
    00747       ent->english = strdup(s);
    00748     }
    00749
    00750   } else {
    00751     if (ent == NULL) {
    00752       strgen_warning("String name '%s' does not exist in master file", str);
    00753       return;
    00754     }
    00755
    00756     if (ent->translated && casep == NULL) {
    00757       strgen_error("String name '%s' is used multiple times", str);
    00758       return;
    00759     }
    00760
    00761     if (s[0] == ':' && s[1] == '\0' && casep == NULL) {
    00762       /* Special syntax :: means we should just inherit the master string */
    00763       ent->translated = strdup(ent->english);
    00764     } else {
    00765       /* make sure that the commands match */
    00766       if (!CheckCommandsMatch(s, ent->english, str)) return;
    00767
    00768       if (casep != NULL) {
    00769         Case *c = MallocT<Case>(1);
    00770
    00771         c->caseidx = ResolveCaseName(casep, strlen(casep));
    00772         c->string = strdup(s);
    00773         c->next = ent->translated_case;
    00774         ent->translated_case = c;
    00775       } else {
    00776         ent->translated = strdup(s);
    00777         /* If the string was translated, use the line from the
    00778          * translated language so errors in the translated file
    00779          * are properly referenced to. */
    00780         ent->line = _cur_line;
    00781       }
    00782     }
    00783   }
    00784 }
    00785
    00786
    00787 static void rstrip(char *buf)
    00788 {
    00789   int i = strlen(buf);
    00790   while (i > 0 && (buf[i - 1] == '\r' || buf[i - 1] == '\n' || buf[i - 1] == ' ')) i--;
    00791   buf[i] = '\0';
    00792 }
    00793
    00794
    00795 static void ParseFile(const char *file, bool english)
    00796 {
    00797   FILE *in;
    00798   char buf[2048];
    00799
    00800   /* Only look at the final filename to determine whether it's be base language or not */
    00801   const char *cur_file = strrchr(_file, PATHSEPCHAR);
    00802   const char *next_file = strrchr(file, PATHSEPCHAR);
    00803   _translation = next_file != NULL && cur_file != NULL && strcmp(cur_file, next_file) != 0;
    00804   _file = file;
    00805
    00806   /* For each new file we parse, reset the genders, and language codes */
    00807   _numgenders = 0;
    00808   _lang_name[0] = _lang_ownname[0] = _lang_isocode[0] = '\0';
    00809   strecpy(_lang_digit_group_separator, ",", lastof(_lang_digit_group_separator));
    00810   strecpy(_lang_digit_group_separator_currency, ",", lastof(_lang_digit_group_separator_currency));
    00811   strecpy(_lang_digit_decimal_separator, ".", lastof(_lang_digit_decimal_separator));
    00812   _lang_textdir = TD_LTR;
    00813   _lang_winlangid = 0x0000; // neutral language code
    00814   _lang_newgrflangid = 0; // standard english
    00815   /* TODO:!! We can't reset the cases. In case the translated strings
    00816    * derive some strings from english.... */
    00817
    00818   in = fopen(file, "r");
    00819   if (in == NULL) error("Cannot open file");
    00820   _cur_line = 1;
    00821   while (fgets(buf, sizeof(buf), in) != NULL) {
    00822     rstrip(buf);
    00823     HandleString(buf, english);
    00824     _cur_line++;
    00825   }
    00826   fclose(in);
    00827
    00828   if (StrEmpty(_lang_name) || StrEmpty(_lang_ownname) || StrEmpty(_lang_isocode)) {
    00829     error("Language must include ##name, ##ownname and ##isocode");
    00830   }
    00831 }
    00832
    00833
    00834 static uint32 MyHashStr(uint32 hash, const char *s)
    00835 {
    00836   for (; *s != '\0'; s++) {
    00837     hash = ROL(hash, 3) ^ *s;
    00838     hash = (hash & 1 ? hash >> 1 ^ 0xDEADBEEF : hash >> 1);
    00839   }
    00840   return hash;
    00841 }
    00842
    00843
    00844 /* make a hash of the file to get a unique "version number" */
    00845 static void MakeHashOfStrings()
    00846 {
    00847   uint32 hash = 0;
    00848   uint i;
    00849
    00850   for (i = 0; i != lengthof(_strings); i++) {
    00851     const LangString *ls = _strings[i];
    00852
    00853     if (ls != NULL) {
    00854       const CmdStruct *cs;
    00855       const char *s;
    00856       char buf[256];
    00857       int argno;
    00858       int casei;
    00859
    00860       s = ls->name;
    00861       hash ^= i * 0x717239;
    00862       hash = (hash & 1 ? hash >> 1 ^ 0xDEADBEEF : hash >> 1);
    00863       hash = MyHashStr(hash, s + 1);
    00864
    00865       s = ls->english;
    00866       while ((cs = ParseCommandString(&s, buf, &argno, &casei)) != NULL) {
    00867         if (cs->flags & C_DONTCOUNT) continue;
    00868
    00869         hash ^= (cs - _cmd_structs) * 0x1234567;
    00870         hash = (hash & 1 ? hash >> 1 ^ 0xF00BAA4 : hash >> 1);
    00871       }
    00872     }
    00873   }
    00874   _hash = hash;
    00875 }
    00876
    00877
    00878 static uint CountInUse(uint grp)
    00879 {
    00880   int i;
    00881
    00882   for (i = 0x800; --i >= 0;) if (_strings[(grp << 11) + i] != NULL) break;
    00883   return i + 1;
    00884 }
    00885
    00886
    00887 bool CompareFiles(const char *n1, const char *n2)
    00888 {
    00889   FILE *f2 = fopen(n2, "rb");
    00890   if (f2 == NULL) return false;
    00891
    00892   FILE *f1 = fopen(n1, "rb");
    00893   if (f1 == NULL) error("can't open %s", n1);
    00894
    00895   size_t l1, l2;
    00896   do {
    00897     char b1[4096];
    00898     char b2[4096];
    00899     l1 = fread(b1, 1, sizeof(b1), f1);
    00900     l2 = fread(b2, 1, sizeof(b2), f2);
    00901
    00902     if (l1 != l2 || memcmp(b1, b2, l1)) {
    00903       fclose(f2);
    00904       fclose(f1);
    00905       return false;
    00906     }
    00907   } while (l1);
    00908
    00909   fclose(f2);
    00910   fclose(f1);
    00911   return true;
    00912 }
    00913
    00914
    00915 static void WriteStringsH(const char *filename)
    00916 {
    00917   int next = -1;
    00918
    00919   FILE *out = fopen("tmp.xxx", "w");
    00920   if (out == NULL) error("can't open tmp.xxx");
    00921
    00922   fprintf(out, "/* This file is automatically generated. Do not modify */\n\n");
    00923   fprintf(out, "#ifndef TABLE_STRINGS_H\n");
    00924   fprintf(out, "#define TABLE_STRINGS_H\n");
    00925
    00926   for (int i = 0; i != lengthof(_strings); i++) {
    00927     if (_strings[i] != NULL) {
    00928       if (next != i) fprintf(out, "\n");
    00929       fprintf(out, "static const StringID %s = 0x%X;\n", _strings[i]->name, i);
    00930       next = i + 1;
    00931     }
    00932   }
    00933
    00934   fprintf(out, "\nstatic const StringID STR_LAST_STRINGID = 0x%X;\n", next - 1);
    00935
    00936   fprintf(out,
    00937     "\nenum {\n"
    00938     "\tLANGUAGE_PACK_IDENT = 0x474E414C, // Big Endian value for 'LANG' (LE is 0x 4C 41 4E 47)\n"
    00939     "\tLANGUAGE_PACK_VERSION = 0x%X,\n"
    00940     "};\n", (uint)_hash
    00941   );
    00942
    00943   fprintf(out, "\n#endif /* TABLE_STRINGS_H */\n");
    00944
    00945   fclose(out);
    00946
    00947   if (CompareFiles("tmp.xxx", filename)) {
    00948     /* files are equal. tmp.xxx is not needed */
    00949     unlink("tmp.xxx");
    00950   } else {
    00951     /* else rename tmp.xxx into filename */
    00952 #if defined(WIN32) || defined(WIN64)
    00953     unlink(filename);
    00954 #endif
    00955     if (rename("tmp.xxx", filename) == -1) error("rename() failed");
    00956   }
    00957 }
    00958
    00959 static int TranslateArgumentIdx(int argidx, int offset)
    00960 {
    00961   int sum;
    00962
    00963   if (argidx < 0 || (uint)argidx >= lengthof(_cur_pcs.cmd)) {
    00964     error("invalid argidx %d", argidx);
    00965   }
    00966   const CmdStruct *cs = _cur_pcs.cmd[argidx];
    00967   if (cs != NULL && cs->consumes <= offset) {
    00968     error("invalid argidx offset %d:%d\n", argidx, offset);
    00969   }
    00970
    00971   for (int i = sum = 0; i < argidx; i++) {
    00972     const CmdStruct *cs = _cur_pcs.cmd[i];
    00973
    00974     sum += (cs != NULL) ? cs->consumes : 1;
    00975   }
    00976
    00977   return sum + offset;
    00978 }
    00979
    00980 static void PutArgidxCommand()
    00981 {
    00982   PutUtf8(SCC_ARG_INDEX);
    00983   PutByte(TranslateArgumentIdx(_cur_argidx));
    00984 }
    00985
    00986
    00987 static void PutCommandString(const char *str)
    00988 {
    00989   _cur_argidx = 0;
    00990
    00991   while (*str != '\0') {
    00992     /* Process characters as they are until we encounter a { */
    00993     if (*str != '{') {
    00994       PutByte(*str++);
    00995       continue;
    00996     }
    00997
    00998     char param[256];
    00999     int argno;
    01000     int casei;
    01001     const CmdStruct *cs = ParseCommandString(&str, param, &argno, &casei);
    01002     if (cs == NULL) break;
    01003
    01004     if (casei != -1) {
    01005       PutUtf8(SCC_SETCASE); // {SETCASE}
    01006       PutByte(casei);
    01007     }
    01008
    01009     /* For params that consume values, we need to handle the argindex properly */
    01010     if (cs->consumes > 0) {
    01011       /* Check if we need to output a move-param command */
    01012       if (argno != -1 && argno != _cur_argidx) {
    01013         _cur_argidx = argno;
    01014         PutArgidxCommand();
    01015       }
    01016
    01017       /* Output the one from the master string... it's always accurate. */
    01018       cs = _cur_pcs.cmd[_cur_argidx++];
    01019       if (cs == NULL) {
    01020         error("%s: No argument exists at position %d", _cur_ident, _cur_argidx - 1);
    01021       }
    01022     }
    01023
    01024     cs->proc(param, cs->value);
    01025   }
    01026 }
    01027
    01028 static void WriteLength(FILE *f, uint length)
    01029 {
    01030   if (length < 0xC0) {
    01031     fputc(length, f);
    01032   } else if (length < 0x4000) {
    01033     fputc((length >> 8) | 0xC0, f);
    01034     fputc(length & 0xFF, f);
    01035   } else {
    01036     error("string too long");
    01037   }
    01038 }
    01039
    01040
    01041 static void WriteLangfile(const char *filename)
    01042 {
    01043   uint in_use[32];
    01044   LanguagePackHeader hdr;
    01045
    01046   FILE *f = fopen(filename, "wb");
    01047   if (f == NULL) error("can't open %s", filename);
    01048
    01049   memset(&hdr, 0, sizeof(hdr));
    01050   for (int i = 0; i != 32; i++) {
    01051     uint n = CountInUse(i);
    01052
    01053     in_use[i] = n;
    01054     hdr.offsets[i] = TO_LE16(n);
    01055   }
    01056
    01057   /* see line 655: fprintf(..."\tLANGUAGE_PACK_IDENT = 0x474E414C,...) */
    01058   hdr.ident = TO_LE32(0x474E414C); // Big Endian value for 'LANG'
    01059   hdr.version = TO_LE32(_hash);
    01060   hdr.plural_form = _lang_pluralform;
    01061   hdr.text_dir = _lang_textdir;
    01062   hdr.winlangid = TO_LE16(_lang_winlangid);
    01063   hdr.newgrflangid = _lang_newgrflangid;
    01064   strecpy(hdr.name, _lang_name, lastof(hdr.name));
    01065   strecpy(hdr.own_name, _lang_ownname, lastof(hdr.own_name));
    01066   strecpy(hdr.isocode, _lang_isocode, lastof(hdr.isocode));
    01067   strecpy(hdr.digit_group_separator, _lang_digit_group_separator, lastof(hdr.digit_group_separator));
    01068   strecpy(hdr.digit_group_separator_currency, _lang_digit_group_separator_currency, lastof(hdr.digit_group_separator_currency));
    01069   strecpy(hdr.digit_decimal_separator, _lang_digit_decimal_separator, lastof(hdr.digit_decimal_separator));
    01070
    01071   fwrite(&hdr, sizeof(hdr), 1, f);
    01072
    01073   for (int i = 0; i != 32; i++) {
    01074     for (uint j = 0; j != in_use[i]; j++) {
    01075       const LangString *ls = _strings[(i << 11) + j];
    01076       const Case *casep;
    01077       const char *cmdp;
    01078
    01079       /* For undefined strings, just set that it's an empty string */
    01080       if (ls == NULL) {
    01081         WriteLength(f, 0);
    01082         continue;
    01083       }
    01084
    01085       _cur_ident = ls->name;
    01086       _cur_line = ls->line;
    01087
    01088       /* Produce a message if a string doesn't have a translation. */
    01089       if (_show_todo > 0 && ls->translated == NULL) {
    01090         if ((_show_todo & 2) != 0) {
    01091           strgen_warning("'%s' is untranslated", ls->name);
    01092         }
    01093         if ((_show_todo & 1) != 0) {
    01094           const char *s = "<TODO> ";
    01095           while (*s != '\0') PutByte(*s++);
    01096         }
    01097       }
    01098
    01099       /* Extract the strings and stuff from the english command string */
    01100       ExtractCommandString(&_cur_pcs, ls->english, false);
    01101
    01102       if (ls->translated_case != NULL || ls->translated != NULL) {
    01103         casep = ls->translated_case;
    01104         cmdp = ls->translated;
    01105       } else {
    01106         casep = ls->english_case;
    01107         cmdp = ls->english;
    01108       }
    01109
    01110       _translated = _masterlang || (cmdp != ls->english);
    01111
    01112       if (casep != NULL) {
    01113         const Case *c;
    01114         uint num;
    01115
    01116         /* Need to output a case-switch.
    01117          * It has this format
    01118          * <0x9E> <NUM CASES> <CASE1> <LEN1> <STRING1> <CASE2> <LEN2> <STRING2> <CASE3> <LEN3> <STRING3> <STRINGDEFAULT>
    01119          * Each LEN is printed using 2 bytes in big endian order. */
    01120         PutUtf8(SCC_SWITCH_CASE);
    01121         /* Count the number of cases */
    01122         for (num = 0, c = casep; c; c = c->next) num++;
    01123         PutByte(num);
    01124
    01125         /* Write each case */
    01126         for (c = casep; c != NULL; c = c->next) {
    01127           int pos;
    01128
    01129           PutByte(c->caseidx);
    01130           /* Make some space for the 16-bit length */
    01131           pos = _put_pos;
    01132           PutByte(0);
    01133           PutByte(0);
    01134           /* Write string */
    01135           PutCommandString(c->string);
    01136           PutByte(0); // terminate with a zero
    01137           /* Fill in the length */
    01138           _put_buf[pos + 0] = GB(_put_pos - (pos + 2), 8, 8);
    01139           _put_buf[pos + 1] = GB(_put_pos - (pos + 2), 0, 8);
    01140         }
    01141       }
    01142
    01143       if (cmdp != NULL) PutCommandString(cmdp);
    01144
    01145       WriteLength(f, _put_pos);
    01146       fwrite(_put_buf, 1, _put_pos, f);
    01147       _put_pos = 0;
    01148     }
    01149   }
    01150
    01151   fputc(0, f);
    01152   fclose(f);
    01153 }
    01154
    01156 static inline void ottd_mkdir(const char *directory)
    01157 {
    01158 #if defined(WIN32) || defined(__WATCOMC__)
    01159     mkdir(directory);
    01160 #else
    01161     mkdir(directory, 0755);
    01162 #endif
    01163 }
    01164
    01168 static inline char *mkpath(char *buf, size_t buflen, const char *path, const char *file)
    01169 {
    01170   ttd_strlcpy(buf, path, buflen); // copy directory into buffer
    01171
    01172   char *p = strchr(buf, '\0'); // add path seperator if necessary
    01173   if (p[-1] != PATHSEPCHAR && (size_t)(p - buf) + 1 < buflen) *p++ = PATHSEPCHAR;
    01174   ttd_strlcpy(p, file, buflen - (size_t)(p - buf)); // catenate filename at end of buffer
    01175   return buf;
    01176 }
    01177
    01178 #if defined(__MINGW32__)
    01179
    01184 static inline char *replace_pathsep(char *s)
    01185 {
    01186   for (char *c = s; *c != '\0'; c++) if (*c == '/') *c = '\\';
    01187   return s;
    01188 }
    01189 #else
    01190 static inline char *replace_pathsep(char *s) { return s; }
    01191 #endif
    01192
    01193 int CDECL main(int argc, char *argv[])
    01194 {
    01195   char pathbuf[MAX_PATH];
    01196   const char *src_dir = ".";
    01197   const char *dest_dir = NULL;
    01198
    01199   while (argc > 1 && *argv[1] == '-') {
    01200     if (strcmp(argv[1], "-v") == 0 || strcmp(argv[1], "--version") == 0) {
    01201       puts("$Revision$");
    01202       return 0;
    01203     }
    01204
    01205     if (strcmp(argv[1], "-export-commands") == 0) {
    01206       printf("args\tflags\tcommand\treplacement\n");
    01207       for (const CmdStruct *cs = _cmd_structs; cs < endof(_cmd_structs); cs++) {
    01208         char flags;
    01209         switch (cs->value) {
    01210           case 0x200E: case 0x200F: // Implicit BIDI controls
    01211           case 0x202A: case 0x202B: case 0x202C: case 0x202D: case 0x202E: // Explicit BIDI controls
    01212           case 0xA0: // Non breaking space
    01213           case '\n': // Newlines may be added too
    01214           case '{':  // This special
    01215             /* This command may be in the translation when it is not in base */
    01216             flags = 'i';
    01217             break;
    01218
    01219           default:
    01220             if (cs->proc == EmitGender) {
    01221               flags = 'g'; // Command needs number of parameters defined by number of genders
    01222             } else if (cs->proc == EmitPlural) {
    01223               flags = 'p'; // Command needs number of parameters defined by plural value
    01224             } else {
    01225               flags = '0'; // Command needs no parameters
    01226             }
    01227         }
    01228         printf("%i\t%c\t\"%s\"\t\"%s\"\n", cs->consumes, flags, cs->cmd, strstr(cs->cmd, "STRING") ? "STRING" : cs->cmd);
    01229       }
    01230       return 0;
    01231     }
    01232
    01233     if (strcmp(argv[1], "-export-plurals") == 0) {
    01234       printf("count\tdescription\n");
    01235       for (const PluralForm *pf = _plural_forms; pf < endof(_plural_forms); pf++) {
    01236         printf("%i\t\"%s\"\n", pf->plural_count, pf->description);
    01237       }
    01238       return 0;
    01239     }
    01240
    01241     if (strcmp(argv[1], "-export-pragmas") == 0) {
    01242       printf("name\tflags\tdefault\tdescription\n");
    01243       for (size_t i = 0; i < lengthof(_pragmas); i++) {
    01244         printf("\"%s\"\t%s\t\"%s\"\t\"%s\"\n",
    01245             _pragmas[i][0], _pragmas[i][1], _pragmas[i][2], _pragmas[i][3]);
    01246       }
    01247       return 0;
    01248     }
    01249
    01250     if (strcmp(argv[1], "-t") == 0 || strcmp(argv[1], "--todo") == 0) {
    01251       _show_todo |= 1;
    01252       argc--, argv++;
    01253       continue;
    01254     }
    01255
    01256     if (strcmp(argv[1], "-w") == 0 || strcmp(argv[1], "--warning") == 0) {
    01257       _show_todo |= 2;
    01258       argc--, argv++;
    01259       continue;
    01260     }
    01261
    01262     if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0) {
    01263       puts(
    01264         "strgen - $Revision$\n"
    01265         " -v | --version    print version information and exit\n"
    01266         " -t | --todo       replace any untranslated strings with '<TODO>'\n"
    01267         " -w | --warning    print a warning for any untranslated strings\n"
    01268         " -h | -? | --help  print this help message and exit\n"
    01269         " -s | --source_dir search for english.txt in the specified directory\n"
    01270         " -d | --dest_dir   put output file in the specified directory, create if needed\n"
    01271         " -export-commands  export all commands and exit\n"
    01272         " -export-plurals   export all plural forms and exit\n"
    01273         " -export-pragmas   export all pragmas and exit\n"
    01274         " Run without parameters and strgen will search for english.txt and parse it,\n"
    01275         " creating strings.h. Passing an argument, strgen will translate that language\n"
    01276         " file using english.txt as a reference and output <language>.lng."
    01277       );
    01278       return 0;
    01279     }
    01280
    01281     if (argc > 2 && (strcmp(argv[1], "-s") == 0 || strcmp(argv[1], "--source_dir") == 0)) {
    01282       src_dir = replace_pathsep(argv[2]);
    01283       argc -= 2, argv += 2;
    01284       continue;
    01285     }
    01286
    01287     if (argc > 2 && (strcmp(argv[1], "-d") == 0 || strcmp(argv[1], "--dest_dir") == 0)) {
    01288       dest_dir = replace_pathsep(argv[2]);
    01289       argc -= 2, argv += 2;
    01290       continue;
    01291     }
    01292
    01293     fprintf(stderr, "Invalid arguments\n");
    01294     return 0;
    01295   }
    01296
    01297   if (dest_dir == NULL) dest_dir = src_dir; // if dest_dir is not specified, it equals src_dir
    01298
    01299   /* strgen has two modes of operation. If no (free) arguments are passed
    01300    * strgen generates strings.h to the destination directory. If it is supplied
    01301    * with a (free) parameter the program will translate that language to destination
    01302    * directory. As input english.txt is parsed from the source directory */
    01303   if (argc == 1) {
    01304     mkpath(pathbuf, lengthof(pathbuf), src_dir, "english.txt");
    01305
    01306     /* parse master file */
    01307     _masterlang = true;
    01308     ParseFile(pathbuf, true);
    01309     MakeHashOfStrings();
    01310     if (_errors) return 1;
    01311
    01312     /* write strings.h */
    01313     ottd_mkdir(dest_dir);
    01314     mkpath(pathbuf, lengthof(pathbuf), dest_dir, "strings.h");
    01315     WriteStringsH(pathbuf);
    01316   } else if (argc == 2) {
    01317     char *r;
    01318
    01319     mkpath(pathbuf, lengthof(pathbuf), src_dir, "english.txt");
    01320
    01321     /* parse master file and check if target file is correct */
    01322     _masterlang = false;
    01323     ParseFile(pathbuf, true);
    01324     MakeHashOfStrings();
    01325     ParseFile(replace_pathsep(argv[1]), false); // target file
    01326     if (_errors) return 1;
    01327
    01328     /* get the targetfile, strip any directories and append to destination path */
    01329     r = strrchr(argv[1], PATHSEPCHAR);
    01330     mkpath(pathbuf, lengthof(pathbuf), dest_dir, (r != NULL) ? &r[1] : argv[1]);
    01331
    01332     /* rename the .txt (input-extension) to .lng */
    01333     r = strrchr(pathbuf, '.');
    01334     if (r == NULL || strcmp(r, ".txt") != 0) r = strchr(pathbuf, '\0');
    01335     ttd_strlcpy(r, ".lng", (size_t)(r - pathbuf));
    01336     WriteLangfile(pathbuf);
    01337
    01338     /* if showing warnings, print a summary of the language */
    01339     if ((_show_todo & 2) != 0) {
    01340       fprintf(stdout, "%d warnings and %d errors for %s\n", _warnings, _errors, pathbuf);
    01341     }
    01342   } else {
    01343     fprintf(stderr, "Invalid arguments\n");
    01344   }
    01345
    01346   return 0;
    01347 }