strgen.cpp

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00001 /* $Id: strgen.cpp 19114 2010-02-12 23:47:50Z rubidium $ */
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 FILE *_output_file = NULL;            
00053 static const char *_output_filename = NULL;  
00054 static int _cur_line;                        
00055 static int _errors, _warnings, _show_todo;
00056 
00057 struct LangString {
00058   char *name;            // Name of the string
00059   char *english;         // English text
00060   char *translated;      // Translated text
00061   uint16 hash_next;      // next hash entry
00062   uint16 index;
00063   int line;              // line of string in source-file
00064   Case *english_case;    // cases for english
00065   Case *translated_case; // cases for foreign
00066 };
00067 
00068 static LangString *_strings[65536];
00069 
00070 
00071 #define HASH_SIZE 32767
00072 static uint16 _hash_head[HASH_SIZE];
00073 
00074 static byte _put_buf[4096];
00075 static int _put_pos;
00076 static int _next_string_id;
00077 
00078 static uint32 _hash;
00079 static char _lang_name[32], _lang_ownname[32], _lang_isocode[16];
00080 static char _lang_digit_group_separator[8];
00081 static char _lang_digit_group_separator_currency[8];
00082 static char _lang_digit_decimal_separator[8];
00083 static byte _lang_pluralform;
00084 static byte _lang_textdir;
00085 static uint16 _lang_winlangid;
00086 static uint8 _lang_newgrflangid;
00087 #define MAX_NUM_GENDER 8
00088 static char _genders[MAX_NUM_GENDER][16];
00089 static uint _numgenders;
00090 
00091 /* contains the name of all cases. */
00092 #define MAX_NUM_CASES 50
00093 static char _cases[MAX_NUM_CASES][16];
00094 static uint _numcases;
00095 
00096 static const char *_cur_ident;
00097 
00098 struct CmdPair {
00099   const CmdStruct *a;
00100   const char *v;
00101 };
00102 
00103 struct ParsedCommandStruct {
00104   uint np;
00105   CmdPair pairs[32];
00106   const CmdStruct *cmd[32]; // ordered by param #
00107 };
00108 
00109 /* Used when generating some advanced commands. */
00110 static ParsedCommandStruct _cur_pcs;
00111 static int _cur_argidx;
00112 
00113 static uint HashStr(const char *s)
00114 {
00115   uint hash = 0;
00116   for (; *s != '\0'; s++) hash = ROL(hash, 3) ^ *s;
00117   return hash % HASH_SIZE;
00118 }
00119 
00120 static void HashAdd(const char *s, LangString *ls)
00121 {
00122   uint hash = HashStr(s);
00123   ls->hash_next = _hash_head[hash];
00124   _hash_head[hash] = ls->index + 1;
00125 }
00126 
00127 static LangString *HashFind(const char *s)
00128 {
00129   int idx = _hash_head[HashStr(s)];
00130 
00131   while (--idx >= 0) {
00132     LangString *ls = _strings[idx];
00133 
00134     if (strcmp(ls->name, s) == 0) return ls;
00135     idx = ls->hash_next;
00136   }
00137   return NULL;
00138 }
00139 
00140 #ifdef _MSC_VER
00141 # define LINE_NUM_FMT(s) "%s (%d): warning: %s (" s ")\n"
00142 #else
00143 # define LINE_NUM_FMT(s) "%s: :%d: " s ": %s\n"
00144 #endif
00145 
00146 static void CDECL strgen_warning(const char *s, ...) WARN_FORMAT(1, 2);
00147 
00148 static void CDECL strgen_warning(const char *s, ...)
00149 {
00150   char buf[1024];
00151   va_list va;
00152   va_start(va, s);
00153   vsnprintf(buf, lengthof(buf), s, va);
00154   va_end(va);
00155   fprintf(stderr, LINE_NUM_FMT("warning"), _file, _cur_line, buf);
00156   _warnings++;
00157 }
00158 
00159 static void CDECL strgen_error(const char *s, ...) WARN_FORMAT(1, 2);
00160 
00161 static void CDECL strgen_error(const char *s, ...)
00162 {
00163   char buf[1024];
00164   va_list va;
00165   va_start(va, s);
00166   vsnprintf(buf, lengthof(buf), s, va);
00167   va_end(va);
00168   fprintf(stderr, LINE_NUM_FMT("error"), _file, _cur_line, buf);
00169   _errors++;
00170 }
00171 
00172 void NORETURN CDECL error(const char *s, ...)
00173 {
00174   char buf[1024];
00175   va_list va;
00176   va_start(va, s);
00177   vsnprintf(buf, lengthof(buf), s, va);
00178   va_end(va);
00179   fprintf(stderr, LINE_NUM_FMT("FATAL"), _file, _cur_line, buf);
00180 #ifdef _MSC_VER
00181   fprintf(stderr, LINE_NUM_FMT("warning"), _file, _cur_line, "language is not compiled");
00182 #endif
00183   /* We were writing output to a file, remove it. */
00184   if (_output_file != NULL) {
00185     fclose(_output_file);
00186     unlink(_output_filename);
00187   }
00188   exit(1);
00189 }
00190 
00191 static void PutByte(byte c)
00192 {
00193   if (_put_pos == lengthof(_put_buf)) error("Put buffer too small");
00194   _put_buf[_put_pos++] = c;
00195 }
00196 
00197 
00198 static void PutUtf8(uint32 value)
00199 {
00200   if (value < 0x80) {
00201     PutByte(value);
00202   } else if (value < 0x800) {
00203     PutByte(0xC0 + GB(value,  6, 5));
00204     PutByte(0x80 + GB(value,  0, 6));
00205   } else if (value < 0x10000) {
00206     PutByte(0xE0 + GB(value, 12, 4));
00207     PutByte(0x80 + GB(value,  6, 6));
00208     PutByte(0x80 + GB(value,  0, 6));
00209   } else if (value < 0x110000) {
00210     PutByte(0xF0 + GB(value, 18, 3));
00211     PutByte(0x80 + GB(value, 12, 6));
00212     PutByte(0x80 + GB(value,  6, 6));
00213     PutByte(0x80 + GB(value,  0, 6));
00214   } else {
00215     strgen_warning("Invalid unicode value U+0x%X", value);
00216   }
00217 }
00218 
00219 
00220 size_t Utf8Validate(const char *s)
00221 {
00222   uint32 c;
00223 
00224   if (!HasBit(s[0], 7)) {
00225     /* 1 byte */
00226     return 1;
00227   } else if (GB(s[0], 5, 3) == 6 && IsUtf8Part(s[1])) {
00228     /* 2 bytes */
00229     c = GB(s[0], 0, 5) << 6 | GB(s[1], 0, 6);
00230     if (c >= 0x80) return 2;
00231   } else if (GB(s[0], 4, 4) == 14 && IsUtf8Part(s[1]) && IsUtf8Part(s[2])) {
00232     /* 3 bytes */
00233     c = GB(s[0], 0, 4) << 12 | GB(s[1], 0, 6) << 6 | GB(s[2], 0, 6);
00234     if (c >= 0x800) return 3;
00235   } else if (GB(s[0], 3, 5) == 30 && IsUtf8Part(s[1]) && IsUtf8Part(s[2]) && IsUtf8Part(s[3])) {
00236     /* 4 bytes */
00237     c = GB(s[0], 0, 3) << 18 | GB(s[1], 0, 6) << 12 | GB(s[2], 0, 6) << 6 | GB(s[3], 0, 6);
00238     if (c >= 0x10000 && c <= 0x10FFFF) return 4;
00239   }
00240 
00241   return 0;
00242 }
00243 
00244 
00245 static void EmitSingleChar(char *buf, int value)
00246 {
00247   if (*buf != '\0') strgen_warning("Ignoring trailing letters in command");
00248   PutUtf8(value);
00249 }
00250 
00251 
00252 /* The plural specifier looks like
00253  * {NUM} {PLURAL -1 passenger passengers} then it picks either passenger/passengers depending on the count in NUM */
00254 
00255 /* This is encoded like
00256  *  CommandByte <ARG#> <NUM> {Length of each string} {each string} */
00257 
00258 bool ParseRelNum(char **buf, int *value, int *offset)
00259 {
00260   const char *s = *buf;
00261   char *end;
00262   bool rel = false;
00263 
00264   while (*s == ' ' || *s == '\t') s++;
00265   if (*s == '+') {
00266     rel = true;
00267     s++;
00268   }
00269   int v = strtol(s, &end, 0);
00270   if (end == s) return false;
00271   if (rel || v < 0) {
00272     *value += v;
00273   } else {
00274     *value = v;
00275   }
00276   if (offset != NULL && *end == ':') {
00277     /* Take the Nth within */
00278     s = end + 1;
00279     *offset = strtol(s, &end, 0);
00280     if (end == s) return false;
00281   }
00282   *buf = end;
00283   return true;
00284 }
00285 
00286 /* Parse out the next word, or NULL */
00287 char *ParseWord(char **buf)
00288 {
00289   char *s = *buf, *r;
00290 
00291   while (*s == ' ' || *s == '\t') s++;
00292   if (*s == '\0') return NULL;
00293 
00294   if (*s == '"') {
00295     r = ++s;
00296     /* parse until next " or NUL */
00297     for (;;) {
00298       if (*s == '\0') break;
00299       if (*s == '"') {
00300         *s++ = '\0';
00301         break;
00302       }
00303       s++;
00304     }
00305   } else {
00306     /* proceed until whitespace or NUL */
00307     r = s;
00308     for (;;) {
00309       if (*s == '\0') break;
00310       if (*s == ' ' || *s == '\t') {
00311         *s++ = '\0';
00312         break;
00313       }
00314       s++;
00315     }
00316   }
00317   *buf = s;
00318   return r;
00319 }
00320 
00321 /* Forward declaration */
00322 static int TranslateArgumentIdx(int arg, int offset = 0);
00323 
00324 static void EmitWordList(const char * const *words, uint nw)
00325 {
00326   PutByte(nw);
00327   for (uint i = 0; i < nw; i++) PutByte(strlen(words[i]) + 1);
00328   for (uint i = 0; i < nw; i++) {
00329     for (uint j = 0; words[i][j] != '\0'; j++) PutByte(words[i][j]);
00330     PutByte(0);
00331   }
00332 }
00333 
00334 static void EmitPlural(char *buf, int value)
00335 {
00336   int argidx = _cur_argidx;
00337   int offset = 0;
00338   const char *words[5];
00339   int nw = 0;
00340 
00341   /* Parse out the number, if one exists. Otherwise default to prev arg. */
00342   if (!ParseRelNum(&buf, &argidx, &offset)) argidx--;
00343 
00344   /* Parse each string */
00345   for (nw = 0; nw < 5; nw++) {
00346     words[nw] = ParseWord(&buf);
00347     if (words[nw] == NULL) break;
00348   }
00349 
00350   if (nw == 0) {
00351     error("%s: No plural words", _cur_ident);
00352   }
00353 
00354   if (_plural_forms[_lang_pluralform].plural_count != nw) {
00355     if (_translated) {
00356       error("%s: Invalid number of plural forms. Expecting %d, found %d.", _cur_ident,
00357         _plural_forms[_lang_pluralform].plural_count, nw);
00358     } else {
00359       if ((_show_todo & 2) != 0) strgen_warning("'%s' is untranslated. Tweaking english string to allow compilation for plural forms", _cur_ident);
00360       if (nw > _plural_forms[_lang_pluralform].plural_count) {
00361         nw = _plural_forms[_lang_pluralform].plural_count;
00362       } else {
00363         for (; nw < _plural_forms[_lang_pluralform].plural_count; nw++) {
00364           words[nw] = words[nw - 1];
00365         }
00366       }
00367     }
00368   }
00369 
00370   PutUtf8(SCC_PLURAL_LIST);
00371   PutByte(TranslateArgumentIdx(argidx, offset));
00372   EmitWordList(words, nw);
00373 }
00374 
00375 
00376 static void EmitGender(char *buf, int value)
00377 {
00378   int argidx = _cur_argidx;
00379   int offset = 0;
00380   uint nw;
00381 
00382   if (buf[0] == '=') {
00383     buf++;
00384 
00385     /* This is a {G=DER} command */
00386     for (nw = 0; ; nw++) {
00387       if (nw >= MAX_NUM_GENDER) error("G argument '%s' invalid", buf);
00388       if (strcmp(buf, _genders[nw]) == 0) break;
00389     }
00390     /* now nw contains the gender index */
00391     PutUtf8(SCC_GENDER_INDEX);
00392     PutByte(nw);
00393   } else {
00394     const char *words[MAX_NUM_GENDER];
00395 
00396     /* This is a {G 0 foo bar two} command.
00397      * If no relative number exists, default to +0 */
00398     if (!ParseRelNum(&buf, &argidx, &offset)) {}
00399 
00400     for (nw = 0; nw < MAX_NUM_GENDER; nw++) {
00401       words[nw] = ParseWord(&buf);
00402       if (words[nw] == NULL) break;
00403     }
00404     if (nw != _numgenders) error("Bad # of arguments for gender command");
00405     PutUtf8(SCC_GENDER_LIST);
00406     PutByte(TranslateArgumentIdx(argidx, offset));
00407     EmitWordList(words, nw);
00408   }
00409 }
00410 
00411 static const CmdStruct *FindCmd(const char *s, int len)
00412 {
00413   for (const CmdStruct *cs = _cmd_structs; cs != endof(_cmd_structs); cs++) {
00414     if (strncmp(cs->cmd, s, len) == 0 && cs->cmd[len] == '\0') return cs;
00415   }
00416   return NULL;
00417 }
00418 
00419 static uint ResolveCaseName(const char *str, uint len)
00420 {
00421   for (uint i = 0; i < MAX_NUM_CASES; i++) {
00422     if (memcmp(_cases[i], str, len) == 0 && _cases[i][len] == 0) return i + 1;
00423   }
00424   error("Invalid case-name '%s'", str);
00425 }
00426 
00427 
00428 /* returns NULL on eof
00429  * else returns command struct */
00430 static const CmdStruct *ParseCommandString(const char **str, char *param, int *argno, int *casei)
00431 {
00432   const char *s = *str, *start;
00433   char c;
00434 
00435   *argno = -1;
00436   *casei = -1;
00437 
00438   /* Scan to the next command, exit if there's no next command. */
00439   for (; *s != '{'; s++) {
00440     if (*s == '\0') return NULL;
00441   }
00442   s++; // Skip past the {
00443 
00444   if (*s >= '0' && *s <= '9') {
00445     char *end;
00446 
00447     *argno = strtoul(s, &end, 0);
00448     if (*end != ':') error("missing arg #");
00449     s = end + 1;
00450   }
00451 
00452   /* parse command name */
00453   start = s;
00454   do {
00455     c = *s++;
00456   } while (c != '}' && c != ' ' && c != '=' && c != '.' && c != 0);
00457 
00458   const CmdStruct *cmd = FindCmd(start, s - start - 1);
00459   if (cmd == NULL) {
00460     strgen_error("Undefined command '%.*s'", (int)(s - start - 1), start);
00461     return NULL;
00462   }
00463 
00464   if (c == '.') {
00465     const char *casep = s;
00466 
00467     if (!(cmd->flags & C_CASE)) {
00468       error("Command '%s' can't have a case", cmd->cmd);
00469     }
00470 
00471     do {
00472       c = *s++;
00473     } while (c != '}' && c != ' ' && c != '\0');
00474     *casei = ResolveCaseName(casep, s - casep - 1);
00475   }
00476 
00477   if (c == '\0') {
00478     strgen_error("Missing } from command '%s'", start);
00479     return NULL;
00480   }
00481 
00482 
00483   if (c != '}') {
00484     if (c == '=') s--;
00485     /* copy params */
00486     start = s;
00487     for (;;) {
00488       c = *s++;
00489       if (c == '}') break;
00490       if (c == '\0') {
00491         strgen_error("Missing } from command '%s'", start);
00492         return NULL;
00493       }
00494       if (s - start == 250) error("param command too long");
00495       *param++ = c;
00496     }
00497   }
00498   *param = '\0';
00499 
00500   *str = s;
00501 
00502   return cmd;
00503 }
00504 
00505 
00506 static void HandlePragma(char *str)
00507 {
00508   if (!memcmp(str, "id ", 3)) {
00509     _next_string_id = strtoul(str + 3, NULL, 0);
00510   } else if (!memcmp(str, "name ", 5)) {
00511     strecpy(_lang_name, str + 5, lastof(_lang_name));
00512   } else if (!memcmp(str, "ownname ", 8)) {
00513     strecpy(_lang_ownname, str + 8, lastof(_lang_ownname));
00514   } else if (!memcmp(str, "isocode ", 8)) {
00515     strecpy(_lang_isocode, str + 8, lastof(_lang_isocode));
00516   } else if (!memcmp(str, "plural ", 7)) {
00517     _lang_pluralform = atoi(str + 7);
00518     if (_lang_pluralform >= lengthof(_plural_forms))
00519       error("Invalid pluralform %d", _lang_pluralform);
00520   } else if (!memcmp(str, "textdir ", 8)) {
00521     if (!memcmp(str + 8, "ltr", 3)) {
00522       _lang_textdir = TD_LTR;
00523     } else if (!memcmp(str + 8, "rtl", 3)) {
00524       _lang_textdir = TD_RTL;
00525     } else {
00526       error("Invalid textdir %s", str + 8);
00527     }
00528   } else if (!memcmp(str, "digitsep ", 9)) {
00529     str += 9;
00530     strecpy(_lang_digit_group_separator, strcmp(str, "{NBSP}") == 0 ? "\xC2\xA0" : str, lastof(_lang_digit_group_separator));
00531   } else if (!memcmp(str, "digitsepcur ", 12)) {
00532     str += 12;
00533     strecpy(_lang_digit_group_separator_currency, strcmp(str, "{NBSP}") == 0 ? "\xC2\xA0" : str, lastof(_lang_digit_group_separator_currency));
00534   } else if (!memcmp(str, "decimalsep ", 11)) {
00535     str += 11;
00536     strecpy(_lang_digit_decimal_separator, strcmp(str, "{NBSP}") == 0 ? "\xC2\xA0" : str, lastof(_lang_digit_decimal_separator));
00537   } else if (!memcmp(str, "winlangid ", 10)) {
00538     const char *buf = str + 10;
00539     long langid = strtol(buf, NULL, 16);
00540     if (langid > (long)UINT16_MAX || langid < 0) {
00541       error("Invalid winlangid %s", buf);
00542     }
00543     _lang_winlangid = (uint16)langid;
00544   } else if (!memcmp(str, "grflangid ", 10)) {
00545     const char *buf = str + 10;
00546     long langid = strtol(buf, NULL, 16);
00547     if (langid >= 0x7F || langid < 0) {
00548       error("Invalid grflangid %s", buf);
00549     }
00550     _lang_newgrflangid = (uint8)langid;
00551   } else if (!memcmp(str, "gender ", 7)) {
00552     char *buf = str + 7;
00553 
00554     for (;;) {
00555       const char *s = ParseWord(&buf);
00556 
00557       if (s == NULL) break;
00558       if (_numgenders >= MAX_NUM_GENDER) error("Too many genders, max %d", MAX_NUM_GENDER);
00559       strecpy(_genders[_numgenders], s, lastof(_genders[_numgenders]));
00560       _numgenders++;
00561     }
00562   } else if (!memcmp(str, "case ", 5)) {
00563     char *buf = str + 5;
00564 
00565     for (;;) {
00566       const char *s = ParseWord(&buf);
00567 
00568       if (s == NULL) break;
00569       if (_numcases >= MAX_NUM_CASES) error("Too many cases, max %d", MAX_NUM_CASES);
00570       strecpy(_cases[_numcases], s, lastof(_cases[_numcases]));
00571       _numcases++;
00572     }
00573   } else {
00574     error("unknown pragma '%s'", str);
00575   }
00576 }
00577 
00578 static void ExtractCommandString(ParsedCommandStruct *p, const char *s, bool warnings)
00579 {
00580   char param[100];
00581   int argno;
00582   int argidx = 0;
00583   int casei;
00584 
00585   memset(p, 0, sizeof(*p));
00586 
00587   for (;;) {
00588     /* read until next command from a. */
00589     const CmdStruct *ar = ParseCommandString(&s, param, &argno, &casei);
00590 
00591     if (ar == NULL) break;
00592 
00593     /* Sanity checking */
00594     if (argno != -1 && ar->consumes == 0) error("Non consumer param can't have a paramindex");
00595 
00596     if (ar->consumes) {
00597       if (argno != -1) argidx = argno;
00598       if (argidx < 0 || (uint)argidx >= lengthof(p->cmd)) error("invalid param idx %d", argidx);
00599       if (p->cmd[argidx] != NULL && p->cmd[argidx] != ar) error("duplicate param idx %d", argidx);
00600 
00601       p->cmd[argidx++] = ar;
00602     } else if (!(ar->flags & C_DONTCOUNT)) { // Ignore some of them
00603       if (p->np >= lengthof(p->pairs)) error("too many commands in string, max " PRINTF_SIZE, lengthof(p->pairs));
00604       p->pairs[p->np].a = ar;
00605       p->pairs[p->np].v = param[0] != '\0' ? strdup(param) : "";
00606       p->np++;
00607     }
00608   }
00609 }
00610 
00611 
00612 static const CmdStruct *TranslateCmdForCompare(const CmdStruct *a)
00613 {
00614   if (a == NULL) return NULL;
00615 
00616   if (strcmp(a->cmd, "STRING1") == 0 ||
00617       strcmp(a->cmd, "STRING2") == 0 ||
00618       strcmp(a->cmd, "STRING3") == 0 ||
00619       strcmp(a->cmd, "STRING4") == 0 ||
00620       strcmp(a->cmd, "STRING5") == 0 ||
00621       strcmp(a->cmd, "RAW_STRING") == 0) {
00622     return FindCmd("STRING", 6);
00623   }
00624 
00625   return a;
00626 }
00627 
00628 
00629 static bool CheckCommandsMatch(char *a, char *b, const char *name)
00630 {
00631   /* If we're not translating, i.e. we're compiling the base language,
00632    * it is pointless to do all these checks as it'll always be correct.
00633    * After all, all checks are based on the base language.
00634    */
00635   if (!_translation) return true;
00636 
00637   ParsedCommandStruct templ;
00638   ParsedCommandStruct lang;
00639   bool result = true;
00640 
00641   ExtractCommandString(&templ, b, true);
00642   ExtractCommandString(&lang, a, true);
00643 
00644   /* For each string in templ, see if we find it in lang */
00645   if (templ.np != lang.np) {
00646     strgen_warning("%s: template string and language string have a different # of commands", name);
00647     result = false;
00648   }
00649 
00650   for (uint i = 0; i < templ.np; i++) {
00651     /* see if we find it in lang, and zero it out */
00652     bool found = false;
00653     for (uint j = 0; j < lang.np; j++) {
00654       if (templ.pairs[i].a == lang.pairs[j].a &&
00655           strcmp(templ.pairs[i].v, lang.pairs[j].v) == 0) {
00656         /* it was found in both. zero it out from lang so we don't find it again */
00657         lang.pairs[j].a = NULL;
00658         found = true;
00659         break;
00660       }
00661     }
00662 
00663     if (!found) {
00664       strgen_warning("%s: command '%s' exists in template file but not in language file", name, templ.pairs[i].a->cmd);
00665       result = false;
00666     }
00667   }
00668 
00669   /* if we reach here, all non consumer commands match up.
00670    * Check if the non consumer commands match up also. */
00671   for (uint i = 0; i < lengthof(templ.cmd); i++) {
00672     if (TranslateCmdForCompare(templ.cmd[i]) != lang.cmd[i]) {
00673       strgen_warning("%s: Param idx #%d '%s' doesn't match with template command '%s'", name, i,
00674         lang.cmd[i]  == NULL ? "<empty>" : TranslateCmdForCompare(lang.cmd[i])->cmd,
00675         templ.cmd[i] == NULL ? "<empty>" : templ.cmd[i]->cmd);
00676       result = false;
00677     }
00678   }
00679 
00680   return result;
00681 }
00682 
00683 static void HandleString(char *str, bool master)
00684 {
00685   if (*str == '#') {
00686     if (str[1] == '#' && str[2] != '#') HandlePragma(str + 2);
00687     return;
00688   }
00689 
00690   /* Ignore comments & blank lines */
00691   if (*str == ';' || *str == ' ' || *str == '\0') return;
00692 
00693   char *s = strchr(str, ':');
00694   if (s == NULL) {
00695     strgen_error("Line has no ':' delimiter");
00696     return;
00697   }
00698 
00699   char *t;
00700   /* Trim spaces.
00701    * After this str points to the command name, and s points to the command contents */
00702   for (t = s; t > str && (t[-1] == ' ' || t[-1] == '\t'); t--) {}
00703   *t = 0;
00704   s++;
00705 
00706   /* Check string is valid UTF-8 */
00707   const char *tmp;
00708   for (tmp = s; *tmp != '\0';) {
00709     size_t len = Utf8Validate(tmp);
00710     if (len == 0) error("Invalid UTF-8 sequence in '%s'", s);
00711     tmp += len;
00712   }
00713 
00714   /* Check if the string has a case..
00715    * The syntax for cases is IDENTNAME.case */
00716   char *casep = strchr(str, '.');
00717   if (casep) *casep++ = '\0';
00718 
00719   /* Check if this string already exists.. */
00720   LangString *ent = HashFind(str);
00721 
00722   if (master) {
00723     if (ent != NULL && casep == NULL) {
00724       strgen_error("String name '%s' is used multiple times", str);
00725       return;
00726     }
00727 
00728     if (ent == NULL && casep != NULL) {
00729       strgen_error("Base string name '%s' doesn't exist yet. Define it before defining a case.", str);
00730       return;
00731     }
00732 
00733     if (ent == NULL) {
00734       if (_strings[_next_string_id]) {
00735         strgen_error("String ID 0x%X for '%s' already in use by '%s'", _next_string_id, str, _strings[_next_string_id]->name);
00736         return;
00737       }
00738 
00739       /* Allocate a new LangString */
00740       ent = CallocT<LangString>(1);
00741       _strings[_next_string_id] = ent;
00742       ent->index = _next_string_id++;
00743       ent->name = strdup(str);
00744       ent->line = _cur_line;
00745 
00746       HashAdd(str, ent);
00747     }
00748 
00749     if (casep != NULL) {
00750       Case *c = MallocT<Case>(1);
00751 
00752       c->caseidx = ResolveCaseName(casep, strlen(casep));
00753       c->string = strdup(s);
00754       c->next = ent->english_case;
00755       ent->english_case = c;
00756     } else {
00757       ent->english = strdup(s);
00758     }
00759 
00760   } else {
00761     if (ent == NULL) {
00762       strgen_warning("String name '%s' does not exist in master file", str);
00763       return;
00764     }
00765 
00766     if (ent->translated && casep == NULL) {
00767       strgen_error("String name '%s' is used multiple times", str);
00768       return;
00769     }
00770 
00771     if (s[0] == ':' && s[1] == '\0' && casep == NULL) {
00772       /* Special syntax :: means we should just inherit the master string */
00773       ent->translated = strdup(ent->english);
00774     } else {
00775       /* make sure that the commands match */
00776       if (!CheckCommandsMatch(s, ent->english, str)) return;
00777 
00778       if (casep != NULL) {
00779         Case *c = MallocT<Case>(1);
00780 
00781         c->caseidx = ResolveCaseName(casep, strlen(casep));
00782         c->string = strdup(s);
00783         c->next = ent->translated_case;
00784         ent->translated_case = c;
00785       } else {
00786         ent->translated = strdup(s);
00787         /* If the string was translated, use the line from the
00788          * translated language so errors in the translated file
00789          * are properly referenced to. */
00790         ent->line = _cur_line;
00791       }
00792     }
00793   }
00794 }
00795 
00796 
00797 static void rstrip(char *buf)
00798 {
00799   int i = strlen(buf);
00800   while (i > 0 && (buf[i - 1] == '\r' || buf[i - 1] == '\n' || buf[i - 1] == ' ')) i--;
00801   buf[i] = '\0';
00802 }
00803 
00804 
00805 static void ParseFile(const char *file, bool english)
00806 {
00807   FILE *in;
00808   char buf[2048];
00809 
00810   /* Only look at the final filename to determine whether it's be base language or not */
00811   const char *cur_file = strrchr(_file, PATHSEPCHAR);
00812   const char *next_file = strrchr(file, PATHSEPCHAR);
00813   _translation = next_file != NULL && cur_file != NULL && strcmp(cur_file, next_file) != 0;
00814   _file = file;
00815 
00816   /* For each new file we parse, reset the genders, and language codes */
00817   _numgenders = 0;
00818   _lang_name[0] = _lang_ownname[0] = _lang_isocode[0] = '\0';
00819   strecpy(_lang_digit_group_separator, ",", lastof(_lang_digit_group_separator));
00820   strecpy(_lang_digit_group_separator_currency, ",", lastof(_lang_digit_group_separator_currency));
00821   strecpy(_lang_digit_decimal_separator, ".", lastof(_lang_digit_decimal_separator));
00822   _lang_textdir = TD_LTR;
00823   _lang_winlangid = 0x0000; // neutral language code
00824   _lang_newgrflangid = 0; // standard english
00825   /* TODO:!! We can't reset the cases. In case the translated strings
00826    * derive some strings from english.... */
00827 
00828   in = fopen(file, "r");
00829   if (in == NULL) error("Cannot open file");
00830   _cur_line = 1;
00831   while (fgets(buf, sizeof(buf), in) != NULL) {
00832     rstrip(buf);
00833     HandleString(buf, english);
00834     _cur_line++;
00835   }
00836   fclose(in);
00837 
00838   if (StrEmpty(_lang_name) || StrEmpty(_lang_ownname) || StrEmpty(_lang_isocode)) {
00839     error("Language must include ##name, ##ownname and ##isocode");
00840   }
00841 }
00842 
00843 
00844 static uint32 MyHashStr(uint32 hash, const char *s)
00845 {
00846   for (; *s != '\0'; s++) {
00847     hash = ROL(hash, 3) ^ *s;
00848     hash = (hash & 1 ? hash >> 1 ^ 0xDEADBEEF : hash >> 1);
00849   }
00850   return hash;
00851 }
00852 
00853 
00854 /* make a hash of the file to get a unique "version number" */
00855 static void MakeHashOfStrings()
00856 {
00857   uint32 hash = 0;
00858   uint i;
00859 
00860   for (i = 0; i != lengthof(_strings); i++) {
00861     const LangString *ls = _strings[i];
00862 
00863     if (ls != NULL) {
00864       const CmdStruct *cs;
00865       const char *s;
00866       char buf[256];
00867       int argno;
00868       int casei;
00869 
00870       s = ls->name;
00871       hash ^= i * 0x717239;
00872       hash = (hash & 1 ? hash >> 1 ^ 0xDEADBEEF : hash >> 1);
00873       hash = MyHashStr(hash, s + 1);
00874 
00875       s = ls->english;
00876       while ((cs = ParseCommandString(&s, buf, &argno, &casei)) != NULL) {
00877         if (cs->flags & C_DONTCOUNT) continue;
00878 
00879         hash ^= (cs - _cmd_structs) * 0x1234567;
00880         hash = (hash & 1 ? hash >> 1 ^ 0xF00BAA4 : hash >> 1);
00881       }
00882     }
00883   }
00884   _hash = hash;
00885 }
00886 
00887 
00888 static uint CountInUse(uint grp)
00889 {
00890   int i;
00891 
00892   for (i = 0x800; --i >= 0;) if (_strings[(grp << 11) + i] != NULL) break;
00893   return i + 1;
00894 }
00895 
00896 
00897 bool CompareFiles(const char *n1, const char *n2)
00898 {
00899   FILE *f2 = fopen(n2, "rb");
00900   if (f2 == NULL) return false;
00901 
00902   FILE *f1 = fopen(n1, "rb");
00903   if (f1 == NULL) error("can't open %s", n1);
00904 
00905   size_t l1, l2;
00906   do {
00907     char b1[4096];
00908     char b2[4096];
00909     l1 = fread(b1, 1, sizeof(b1), f1);
00910     l2 = fread(b2, 1, sizeof(b2), f2);
00911 
00912     if (l1 != l2 || memcmp(b1, b2, l1)) {
00913       fclose(f2);
00914       fclose(f1);
00915       return false;
00916     }
00917   } while (l1);
00918 
00919   fclose(f2);
00920   fclose(f1);
00921   return true;
00922 }
00923 
00924 
00925 static void WriteStringsH(const char *filename)
00926 {
00927   int next = -1;
00928 
00929   _output_filename = "tmp.xxx";
00930   _output_file = fopen(_output_filename, "w");
00931   if (_output_file == NULL) error("can't open tmp.xxx");
00932 
00933   fprintf(_output_file, "/* This file is automatically generated. Do not modify */\n\n");
00934   fprintf(_output_file, "#ifndef TABLE_STRINGS_H\n");
00935   fprintf(_output_file, "#define TABLE_STRINGS_H\n");
00936 
00937   for (int i = 0; i != lengthof(_strings); i++) {
00938     if (_strings[i] != NULL) {
00939       if (next != i) fprintf(_output_file, "\n");
00940       fprintf(_output_file, "static const StringID %s = 0x%X;\n", _strings[i]->name, i);
00941       next = i + 1;
00942     }
00943   }
00944 
00945   fprintf(_output_file, "\nstatic const StringID STR_LAST_STRINGID = 0x%X;\n", next - 1);
00946 
00947   fprintf(_output_file,
00948     "\nenum {\n"
00949     "\tLANGUAGE_PACK_IDENT = 0x474E414C, // Big Endian value for 'LANG' (LE is 0x 4C 41 4E 47)\n"
00950     "\tLANGUAGE_PACK_VERSION = 0x%X,\n"
00951     "};\n", (uint)_hash
00952   );
00953 
00954   fprintf(_output_file, "\n#endif /* TABLE_STRINGS_H */\n");
00955 
00956   fclose(_output_file);
00957   _output_file = NULL;
00958 
00959   if (CompareFiles(_output_filename, filename)) {
00960     /* files are equal. tmp.xxx is not needed */
00961     unlink(_output_filename);
00962   } else {
00963     /* else rename tmp.xxx into filename */
00964 #if defined(WIN32) || defined(WIN64)
00965     unlink(filename);
00966 #endif
00967     if (rename(_output_filename, filename) == -1) error("rename() failed");
00968   }
00969   _output_filename = NULL;
00970 }
00971 
00972 static int TranslateArgumentIdx(int argidx, int offset)
00973 {
00974   int sum;
00975 
00976   if (argidx < 0 || (uint)argidx >= lengthof(_cur_pcs.cmd)) {
00977     error("invalid argidx %d", argidx);
00978   }
00979   const CmdStruct *cs = _cur_pcs.cmd[argidx];
00980   if (cs != NULL && cs->consumes <= offset) {
00981     error("invalid argidx offset %d:%d", argidx, offset);
00982   }
00983 
00984   if (_cur_pcs.cmd[argidx] == NULL) {
00985     error("no command for this argidx %d", argidx);
00986   }
00987 
00988   for (int i = sum = 0; i < argidx; i++) {
00989     const CmdStruct *cs = _cur_pcs.cmd[i];
00990 
00991     sum += (cs != NULL) ? cs->consumes : 1;
00992   }
00993 
00994   return sum + offset;
00995 }
00996 
00997 static void PutArgidxCommand()
00998 {
00999   PutUtf8(SCC_ARG_INDEX);
01000   PutByte(TranslateArgumentIdx(_cur_argidx));
01001 }
01002 
01003 
01004 static void PutCommandString(const char *str)
01005 {
01006   _cur_argidx = 0;
01007 
01008   while (*str != '\0') {
01009     /* Process characters as they are until we encounter a { */
01010     if (*str != '{') {
01011       PutByte(*str++);
01012       continue;
01013     }
01014 
01015     char param[256];
01016     int argno;
01017     int casei;
01018     const CmdStruct *cs = ParseCommandString(&str, param, &argno, &casei);
01019     if (cs == NULL) break;
01020 
01021     if (casei != -1) {
01022       PutUtf8(SCC_SETCASE); // {SETCASE}
01023       PutByte(casei);
01024     }
01025 
01026     /* For params that consume values, we need to handle the argindex properly */
01027     if (cs->consumes > 0) {
01028       /* Check if we need to output a move-param command */
01029       if (argno != -1 && argno != _cur_argidx) {
01030         _cur_argidx = argno;
01031         PutArgidxCommand();
01032       }
01033 
01034       /* Output the one from the master string... it's always accurate. */
01035       cs = _cur_pcs.cmd[_cur_argidx++];
01036       if (cs == NULL) {
01037         error("%s: No argument exists at position %d", _cur_ident, _cur_argidx - 1);
01038       }
01039     }
01040 
01041     cs->proc(param, cs->value);
01042   }
01043 }
01044 
01045 static void WriteLength(FILE *f, uint length)
01046 {
01047   if (length < 0xC0) {
01048     fputc(length, f);
01049   } else if (length < 0x4000) {
01050     fputc((length >> 8) | 0xC0, f);
01051     fputc(length & 0xFF, f);
01052   } else {
01053     error("string too long");
01054   }
01055 }
01056 
01057 
01058 static void WriteLangfile(const char *filename)
01059 {
01060   uint in_use[32];
01061   LanguagePackHeader hdr;
01062 
01063   _output_filename = filename;
01064   _output_file = fopen(filename, "wb");
01065   if (_output_file == NULL) error("can't open %s", filename);
01066 
01067   memset(&hdr, 0, sizeof(hdr));
01068   for (int i = 0; i != 32; i++) {
01069     uint n = CountInUse(i);
01070 
01071     in_use[i] = n;
01072     hdr.offsets[i] = TO_LE16(n);
01073   }
01074 
01075   /* see line 655: fprintf(..."\tLANGUAGE_PACK_IDENT = 0x474E414C,...) */
01076   hdr.ident = TO_LE32(0x474E414C); // Big Endian value for 'LANG'
01077   hdr.version = TO_LE32(_hash);
01078   hdr.plural_form = _lang_pluralform;
01079   hdr.text_dir = _lang_textdir;
01080   hdr.winlangid = TO_LE16(_lang_winlangid);
01081   hdr.newgrflangid = _lang_newgrflangid;
01082   strecpy(hdr.name, _lang_name, lastof(hdr.name));
01083   strecpy(hdr.own_name, _lang_ownname, lastof(hdr.own_name));
01084   strecpy(hdr.isocode, _lang_isocode, lastof(hdr.isocode));
01085   strecpy(hdr.digit_group_separator, _lang_digit_group_separator, lastof(hdr.digit_group_separator));
01086   strecpy(hdr.digit_group_separator_currency, _lang_digit_group_separator_currency, lastof(hdr.digit_group_separator_currency));
01087   strecpy(hdr.digit_decimal_separator, _lang_digit_decimal_separator, lastof(hdr.digit_decimal_separator));
01088 
01089   fwrite(&hdr, sizeof(hdr), 1, _output_file);
01090 
01091   for (int i = 0; i != 32; i++) {
01092     for (uint j = 0; j != in_use[i]; j++) {
01093       const LangString *ls = _strings[(i << 11) + j];
01094       const Case *casep;
01095       const char *cmdp;
01096 
01097       /* For undefined strings, just set that it's an empty string */
01098       if (ls == NULL) {
01099         WriteLength(_output_file, 0);
01100         continue;
01101       }
01102 
01103       _cur_ident = ls->name;
01104       _cur_line = ls->line;
01105 
01106       /* Produce a message if a string doesn't have a translation. */
01107       if (_show_todo > 0 && ls->translated == NULL) {
01108         if ((_show_todo & 2) != 0) {
01109           strgen_warning("'%s' is untranslated", ls->name);
01110         }
01111         if ((_show_todo & 1) != 0) {
01112           const char *s = "<TODO> ";
01113           while (*s != '\0') PutByte(*s++);
01114         }
01115       }
01116 
01117       /* Extract the strings and stuff from the english command string */
01118       ExtractCommandString(&_cur_pcs, ls->english, false);
01119 
01120       if (ls->translated_case != NULL || ls->translated != NULL) {
01121         casep = ls->translated_case;
01122         cmdp = ls->translated;
01123       } else {
01124         casep = ls->english_case;
01125         cmdp = ls->english;
01126       }
01127 
01128       _translated = _masterlang || (cmdp != ls->english);
01129 
01130       if (casep != NULL) {
01131         const Case *c;
01132         uint num;
01133 
01134         /* Need to output a case-switch.
01135          * It has this format
01136          * <0x9E> <NUM CASES> <CASE1> <LEN1> <STRING1> <CASE2> <LEN2> <STRING2> <CASE3> <LEN3> <STRING3> <STRINGDEFAULT>
01137          * Each LEN is printed using 2 bytes in big endian order. */
01138         PutUtf8(SCC_SWITCH_CASE);
01139         /* Count the number of cases */
01140         for (num = 0, c = casep; c; c = c->next) num++;
01141         PutByte(num);
01142 
01143         /* Write each case */
01144         for (c = casep; c != NULL; c = c->next) {
01145           int pos;
01146 
01147           PutByte(c->caseidx);
01148           /* Make some space for the 16-bit length */
01149           pos = _put_pos;
01150           PutByte(0);
01151           PutByte(0);
01152           /* Write string */
01153           PutCommandString(c->string);
01154           PutByte(0); // terminate with a zero
01155           /* Fill in the length */
01156           _put_buf[pos + 0] = GB(_put_pos - (pos + 2), 8, 8);
01157           _put_buf[pos + 1] = GB(_put_pos - (pos + 2), 0, 8);
01158         }
01159       }
01160 
01161       if (cmdp != NULL) PutCommandString(cmdp);
01162 
01163       WriteLength(_output_file, _put_pos);
01164       fwrite(_put_buf, 1, _put_pos, _output_file);
01165       _put_pos = 0;
01166     }
01167   }
01168 
01169   fputc(0, _output_file);
01170   fclose(_output_file);
01171 
01172   _output_file = NULL;
01173   _output_filename = NULL;
01174 }
01175 
01177 static inline void ottd_mkdir(const char *directory)
01178 {
01179 #if defined(WIN32) || defined(__WATCOMC__)
01180     mkdir(directory);
01181 #else
01182     mkdir(directory, 0755);
01183 #endif
01184 }
01185 
01189 static inline char *mkpath(char *buf, size_t buflen, const char *path, const char *file)
01190 {
01191   ttd_strlcpy(buf, path, buflen); // copy directory into buffer
01192 
01193   char *p = strchr(buf, '\0'); // add path seperator if necessary
01194   if (p[-1] != PATHSEPCHAR && (size_t)(p - buf) + 1 < buflen) *p++ = PATHSEPCHAR;
01195   ttd_strlcpy(p, file, buflen - (size_t)(p - buf)); // catenate filename at end of buffer
01196   return buf;
01197 }
01198 
01199 #if defined(__MINGW32__)
01200 
01205 static inline char *replace_pathsep(char *s)
01206 {
01207   for (char *c = s; *c != '\0'; c++) if (*c == '/') *c = '\\';
01208   return s;
01209 }
01210 #else
01211 static inline char *replace_pathsep(char *s) { return s; }
01212 #endif
01213 
01214 int CDECL main(int argc, char *argv[])
01215 {
01216   char pathbuf[MAX_PATH];
01217   const char *src_dir = ".";
01218   const char *dest_dir = NULL;
01219 
01220   while (argc > 1 && *argv[1] == '-') {
01221     if (strcmp(argv[1], "-v") == 0 || strcmp(argv[1], "--version") == 0) {
01222       puts("$Revision: 19114 $");
01223       return 0;
01224     }
01225 
01226     if (strcmp(argv[1], "-export-commands") == 0) {
01227       printf("args\tflags\tcommand\treplacement\n");
01228       for (const CmdStruct *cs = _cmd_structs; cs < endof(_cmd_structs); cs++) {
01229         char flags;
01230         switch (cs->value) {
01231           case 0x200E: case 0x200F: // Implicit BIDI controls
01232           case 0x202A: case 0x202B: case 0x202C: case 0x202D: case 0x202E: // Explicit BIDI controls
01233           case 0xA0: // Non breaking space
01234           case '\n': // Newlines may be added too
01235           case '{':  // This special
01236             /* This command may be in the translation when it is not in base */
01237             flags = 'i';
01238             break;
01239 
01240           default:
01241             if (cs->proc == EmitGender) {
01242               flags = 'g'; // Command needs number of parameters defined by number of genders
01243             } else if (cs->proc == EmitPlural) {
01244               flags = 'p'; // Command needs number of parameters defined by plural value
01245             } else {
01246               flags = '0'; // Command needs no parameters
01247             }
01248         }
01249         printf("%i\t%c\t\"%s\"\t\"%s\"\n", cs->consumes, flags, cs->cmd, strstr(cs->cmd, "STRING") ? "STRING" : cs->cmd);
01250       }
01251       return 0;
01252     }
01253 
01254     if (strcmp(argv[1], "-export-plurals") == 0) {
01255       printf("count\tdescription\n");
01256       for (const PluralForm *pf = _plural_forms; pf < endof(_plural_forms); pf++) {
01257         printf("%i\t\"%s\"\n", pf->plural_count, pf->description);
01258       }
01259       return 0;
01260     }
01261 
01262     if (strcmp(argv[1], "-export-pragmas") == 0) {
01263       printf("name\tflags\tdefault\tdescription\n");
01264       for (size_t i = 0; i < lengthof(_pragmas); i++) {
01265         printf("\"%s\"\t%s\t\"%s\"\t\"%s\"\n",
01266             _pragmas[i][0], _pragmas[i][1], _pragmas[i][2], _pragmas[i][3]);
01267       }
01268       return 0;
01269     }
01270 
01271     if (strcmp(argv[1], "-t") == 0 || strcmp(argv[1], "--todo") == 0) {
01272       _show_todo |= 1;
01273       argc--, argv++;
01274       continue;
01275     }
01276 
01277     if (strcmp(argv[1], "-w") == 0 || strcmp(argv[1], "--warning") == 0) {
01278       _show_todo |= 2;
01279       argc--, argv++;
01280       continue;
01281     }
01282 
01283     if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0) {
01284       puts(
01285         "strgen - $Revision: 19114 $\n"
01286         " -v | --version    print version information and exit\n"
01287         " -t | --todo       replace any untranslated strings with '<TODO>'\n"
01288         " -w | --warning    print a warning for any untranslated strings\n"
01289         " -h | -? | --help  print this help message and exit\n"
01290         " -s | --source_dir search for english.txt in the specified directory\n"
01291         " -d | --dest_dir   put output file in the specified directory, create if needed\n"
01292         " -export-commands  export all commands and exit\n"
01293         " -export-plurals   export all plural forms and exit\n"
01294         " -export-pragmas   export all pragmas and exit\n"
01295         " Run without parameters and strgen will search for english.txt and parse it,\n"
01296         " creating strings.h. Passing an argument, strgen will translate that language\n"
01297         " file using english.txt as a reference and output <language>.lng."
01298       );
01299       return 0;
01300     }
01301 
01302     if (argc > 2 && (strcmp(argv[1], "-s") == 0 || strcmp(argv[1], "--source_dir") == 0)) {
01303       src_dir = replace_pathsep(argv[2]);
01304       argc -= 2, argv += 2;
01305       continue;
01306     }
01307 
01308     if (argc > 2 && (strcmp(argv[1], "-d") == 0 || strcmp(argv[1], "--dest_dir") == 0)) {
01309       dest_dir = replace_pathsep(argv[2]);
01310       argc -= 2, argv += 2;
01311       continue;
01312     }
01313 
01314     fprintf(stderr, "Invalid arguments\n");
01315     return 0;
01316   }
01317 
01318   if (dest_dir == NULL) dest_dir = src_dir; // if dest_dir is not specified, it equals src_dir
01319 
01320   /* strgen has two modes of operation. If no (free) arguments are passed
01321    * strgen generates strings.h to the destination directory. If it is supplied
01322    * with a (free) parameter the program will translate that language to destination
01323    * directory. As input english.txt is parsed from the source directory */
01324   if (argc == 1) {
01325     mkpath(pathbuf, lengthof(pathbuf), src_dir, "english.txt");
01326 
01327     /* parse master file */
01328     _masterlang = true;
01329     ParseFile(pathbuf, true);
01330     MakeHashOfStrings();
01331     if (_errors) return 1;
01332 
01333     /* write strings.h */
01334     ottd_mkdir(dest_dir);
01335     mkpath(pathbuf, lengthof(pathbuf), dest_dir, "strings.h");
01336     WriteStringsH(pathbuf);
01337   } else if (argc == 2) {
01338     char *r;
01339 
01340     mkpath(pathbuf, lengthof(pathbuf), src_dir, "english.txt");
01341 
01342     /* parse master file and check if target file is correct */
01343     _masterlang = false;
01344     ParseFile(pathbuf, true);
01345     MakeHashOfStrings();
01346     ParseFile(replace_pathsep(argv[1]), false); // target file
01347     if (_errors) return 1;
01348 
01349     /* get the targetfile, strip any directories and append to destination path */
01350     r = strrchr(argv[1], PATHSEPCHAR);
01351     mkpath(pathbuf, lengthof(pathbuf), dest_dir, (r != NULL) ? &r[1] : argv[1]);
01352 
01353     /* rename the .txt (input-extension) to .lng */
01354     r = strrchr(pathbuf, '.');
01355     if (r == NULL || strcmp(r, ".txt") != 0) r = strchr(pathbuf, '\0');
01356     ttd_strlcpy(r, ".lng", (size_t)(r - pathbuf));
01357     WriteLangfile(pathbuf);
01358 
01359     /* if showing warnings, print a summary of the language */
01360     if ((_show_todo & 2) != 0) {
01361       fprintf(stdout, "%d warnings and %d errors for %s\n", _warnings, _errors, pathbuf);
01362     }
01363   } else {
01364     fprintf(stderr, "Invalid arguments\n");
01365   }
01366 
01367   return 0;
01368 }

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