1  /* Dump the character classes and character maps of a locale to a bunch
       2     of individual files which can be processed with diff, sed etc.
       3     Copyright (C) 2000-2023 Free Software Foundation, Inc.
       4     This file is part of the GNU C Library.
       5  
       6     The GNU C Library is free software; you can redistribute it and/or
       7     modify it under the terms of the GNU Lesser General Public
       8     License as published by the Free Software Foundation; either
       9     version 2.1 of the License, or (at your option) any later version.
      10  
      11     The GNU C Library is distributed in the hope that it will be useful,
      12     but WITHOUT ANY WARRANTY; without even the implied warranty of
      13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14     Lesser General Public License for more details.
      15  
      16     You should have received a copy of the GNU Lesser General Public
      17     License along with the GNU C Library; if not, see
      18     <https://www.gnu.org/licenses/>.  */
      19  
      20  /* Usage example:
      21       $ dump-ctype de_DE.UTF-8
      22   */
      23  
      24  #include <stdio.h>
      25  #include <stdlib.h>
      26  #include <wctype.h>
      27  #include <locale.h>
      28  #include <sys/stat.h>
      29  #include <unistd.h>
      30  #include <errno.h>
      31  
      32  static const char *program_name = "dump-ctype";
      33  static const char *locale;
      34  
      35  static const char *class_names[] =
      36    {
      37      "alnum", "alpha", "blank", "cntrl", "digit", "graph", "lower",
      38      "print", "punct", "space", "upper", "xdigit"
      39    };
      40  
      41  static const char *map_names[] =
      42    {
      43      "tolower", "toupper", "totitle"
      44    };
      45  
      46  static void dump_class (const char *class_name)
      47  {
      48    wctype_t class;
      49    FILE *f;
      50    unsigned int ch;
      51  
      52    class = wctype (class_name);
      53    if (class == (wctype_t) 0)
      54      {
      55        fprintf (stderr, "%s %s: noexistent class %s\n", program_name,
      56  	       locale, class_name);
      57        return;
      58      }
      59  
      60    f = fopen (class_name, "w");
      61    if (f == NULL)
      62      {
      63        fprintf (stderr, "%s %s: cannot open file %s/%s\n", program_name,
      64  	       locale, locale, class_name);
      65        exit (1);
      66      }
      67  
      68    for (ch = 0; ch < 0x10000; ch++)
      69      if (iswctype (ch, class))
      70        fprintf (f, "0x%04X\n", ch);
      71  
      72    if (ferror (f) || fclose (f))
      73      {
      74        fprintf (stderr, "%s %s: I/O error on file %s/%s\n", program_name,
      75  	       locale, locale, class_name);
      76        exit (1);
      77      }
      78  }
      79  
      80  static void dump_map (const char *map_name)
      81  {
      82    wctrans_t map;
      83    FILE *f;
      84    unsigned int ch;
      85  
      86    map = wctrans (map_name);
      87    if (map == (wctrans_t) 0)
      88      {
      89        fprintf (stderr, "%s %s: noexistent map %s\n", program_name,
      90  	       locale, map_name);
      91        return;
      92      }
      93  
      94    f = fopen (map_name, "w");
      95    if (f == NULL)
      96      {
      97        fprintf (stderr, "%s %s: cannot open file %s/%s\n", program_name,
      98  	       locale, locale, map_name);
      99        exit (1);
     100      }
     101  
     102    for (ch = 0; ch < 0x10000; ch++)
     103      if (towctrans (ch, map) != ch)
     104        fprintf (f, "0x%04X\t0x%04X\n", ch, towctrans (ch, map));
     105  
     106    if (ferror (f) || fclose (f))
     107      {
     108        fprintf (stderr, "%s %s: I/O error on file %s/%s\n", program_name,
     109  	       locale, locale, map_name);
     110        exit (1);
     111      }
     112  }
     113  
     114  int
     115  main (int argc, char *argv[])
     116  {
     117    size_t i;
     118  
     119    if (argc != 2)
     120      {
     121        fprintf (stderr, "Usage: dump-ctype locale\n");
     122        exit (1);
     123      }
     124    locale = argv[1];
     125  
     126    if (setlocale (LC_ALL, locale) == NULL)
     127      {
     128        fprintf (stderr, "%s: setlocale cannot switch to locale %s\n",
     129  	       program_name, locale);
     130        exit (1);
     131      }
     132  
     133    if (mkdir (locale, 0777) < 0)
     134      {
     135        char buf[100];
     136        int save_errno = errno;
     137  
     138        sprintf (buf, "%s: cannot create directory %s", program_name, locale);
     139        errno = save_errno;
     140        perror (buf);
     141        exit (1);
     142      }
     143  
     144    if (chdir (locale) < 0)
     145      {
     146        char buf[100];
     147        int save_errno = errno;
     148  
     149        sprintf (buf, "%s: cannot chdir to %s", program_name, locale);
     150        errno = save_errno;
     151        perror (buf);
     152        exit (1);
     153      }
     154  
     155    for (i = 0; i < sizeof (class_names) / sizeof (class_names[0]); i++)
     156      dump_class (class_names[i]);
     157  
     158    for (i = 0; i < sizeof (map_names) / sizeof (map_names[0]); i++)
     159      dump_map (map_names[i]);
     160  
     161    return 0;
     162  }