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   1 /*
   2  * generate_language_id_map.c
   3  *
   4  * Generate a memory-efficient map from Windows language IDs to names.  This
   5  * program runs on Windows and uses LCIDToLocaleName() to enumerate all
   6  * languages recognized by Windows.
   7  *
   8  * ----------------------------------------------------------------------------
   9  *
  10  * Copyright (C) 2016 Eric Biggers
  11  *
  12  * This file is free software; you can redistribute it and/or modify it under
  13  * the terms of the GNU Lesser General Public License as published by the Free
  14  * Software Foundation; either version 3 of the License, or (at your option) any
  15  * later version.
  16  *
  17  * This file is distributed in the hope that it will be useful, but WITHOUT
  18  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  19  * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
  20  * details.
  21  *
  22  * You should have received a copy of the GNU Lesser General Public License
  23  * along with this file; if not, see http://www.gnu.org/licenses/.
  24  */
  25
  26 #define WINVER 0x6000   /* Needed for LCIDToLocaleName() declaration  */
  27
  28 #include <inttypes.h>
  29 #include <stdbool.h>
  30 #include <stdio.h>
  31 #include <windows.h>
  32
  33 static struct {
  34         uint16_t id;
  35         char name[LOCALE_NAME_MAX_LENGTH];
  36 } map[65536];
  37
  38 int main(void)
  39 {
  40         uint32_t num_languages = 0;
  41         uint32_t name_start_offset = 0;
  42         uint32_t num_chars;
  43         bool need_new_line = true;
  44
  45         for (uint32_t lcid = 0; lcid < 65536; lcid++) {
  46                 wchar_t locale_name[LOCALE_NAME_MAX_LENGTH];
  47
  48                 if (LCIDToLocaleName(lcid, locale_name, LOCALE_NAME_MAX_LENGTH, 0)) {
  49                         size_t len = wcslen(locale_name);
  50                         for (size_t j = 0; j <= len; j++) {
  51                                 if (locale_name[j] > 127) {
  52                                         fprintf(stderr,
  53                                                 "ERROR: locale name \"%ls\" "
  54                                                 "includes non-ASCII characters",
  55                                                 locale_name);
  56                                         return 1;
  57                                 }
  58                                 map[num_languages].name[j] = locale_name[j];
  59                         }
  60                         map[num_languages++].id = lcid;
  61                 } else if (GetLastError() != ERROR_INVALID_PARAMETER) {
  62                         fprintf(stderr,
  63                                 "ERROR: LCIDToLocaleName(%"PRIx32"): %u\n",
  64                                 lcid, (unsigned)GetLastError());
  65                         return 1;
  66                 }
  67         }
  68
  69         printf("static const struct {\n");
  70         printf("\tu16 id;\n");
  71         printf("\tu16 name_start_offset;\n");
  72         printf("} language_id_map[%"PRIu32"] = {", num_languages);
  73         for (uint32_t i = 0; i < num_languages; i++) {
  74                 if (need_new_line)
  75                         printf("\n\t");
  76                 printf("{0x%04x, %4"PRIu32"},", map[i].id, name_start_offset);
  77                 need_new_line = (i % 4 == 3);
  78                 if (!need_new_line)
  79                         putchar(' ');
  80                 name_start_offset += strlen(map[i].name) + 1;
  81                 if (name_start_offset > 65536) {
  82                         fprintf(stderr, "ERROR: total length of "
  83                                 "language names is too long!");
  84                         return 1;
  85                 }
  86         }
  87         printf("\n};\n");
  88         printf("\n");
  89
  90         printf("static const char language_names[%"PRIu32"] =\n",
  91                name_start_offset);
  92         printf("\t\"");
  93         num_chars = 8;
  94         for (uint32_t i = 0; i < num_languages; i++) {
  95                 size_t len = strlen(map[i].name);
  96                 need_new_line = (num_chars + len + 3 > 80);
  97                 if (need_new_line) {
  98                         printf("\"\n");
  99                         printf("\t\"");
 100                         num_chars = 9;
 101                 }
 102                 printf("%s\\0", map[i].name);
 103                 num_chars += len + 2;
 104         }
 105         printf("\";\n");
 106         return 0;
 107 }