locale/strings2po.c

   1 /*
   2  * Convert Apple .strings file (UTF-16 BE text file) to GNU gettext .po files.
   3  *
   4  * Copyright 2007-2014 by Apple Inc.
   5  *
   6  * These coded instructions, statements, and computer programs are the
   7  * property of Apple Inc. and are protected by Federal copyright
   8  * law.  Distribution and use rights are outlined in the file "LICENSE.txt"
   9  * which should have been included with this file.  If this file is
  10  * file is missing or damaged, see the license at "http://www.cups.org/".
  11  *
  12  * Usage:
  13  *
  14  *   strings2po filename.strings filename.po
  15  *
  16  * Compile with:
  17  *
  18  *   gcc -o strings2po strings2po.c
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23
  24
  25 /*
  26  * The .strings file format is simple:
  27  *
  28  * // comment
  29  * "id" = "str";
  30  *
  31  * Both the id and str strings use standard C quoting for special characters
  32  * like newline and the double quote character.
  33  */
  34
  35 /*
  36  * Local functions...
  37  */
  38
  39 static int      read_strings(FILE *strings, char *buffer, size_t bufsize,
  40                              char **id, char **str);
  41 static void     write_po(FILE *po, const char *what, const char *s);
  42
  43
  44 /*
  45  *   main() - Convert .strings file to .po.
  46  */
  47
  48 int                                     /* O - Exit code */
  49 main(int  argc,                         /* I - Number of command-line args */
  50      char *argv[])                      /* I - Command-line arguments */
  51 {
  52   FILE  *strings,                       /* .strings file */
  53         *po;                            /* .po file */
  54   char  iconv[1024],                    /* iconv command */
  55         buffer[8192],                   /* Line buffer */
  56         *id,                            /* ID string */
  57         *str;                           /* Translation string */
  58   int   count;                          /* Number of messages converted */
  59
  60
  61   if (argc != 3)
  62   {
  63     puts("Usage: strings2po filename.strings filename.po");
  64     return (1);
  65   }
  66
  67  /*
  68   * Cheat by using iconv to convert the .strings file from UTF-16 to UTF-8
  69   * which is what we need for the .po file (and it makes things a lot
  70   * simpler...)
  71   */
  72
  73   snprintf(iconv, sizeof(iconv), "iconv -f utf-16 -t utf-8 '%s'", argv[1]);
  74   if ((strings = popen(iconv, "r")) == NULL)
  75   {
  76     perror(argv[1]);
  77     return (1);
  78   }
  79
  80   if ((po = fopen(argv[2], "w")) == NULL)
  81   {
  82     perror(argv[2]);
  83     pclose(strings);
  84     return (1);
  85   }
  86
  87   count = 0;
  88
  89   while (read_strings(strings, buffer, sizeof(buffer), &id, &str))
  90   {
  91     count ++;
  92     write_po(po, "msgid", id);
  93     write_po(po, "msgstr", str);
  94   }
  95
  96   pclose(strings);
  97   fclose(po);
  98
  99   printf("%s: %d messages.\n", argv[2], count);
 100
 101   return (0);
 102 }
 103
 104
 105 /*
 106  * 'read_strings()' - Read a line from a .strings file.
 107  */
 108
 109 static int                              /* O - 1 on success, 0 on failure */
 110 read_strings(FILE   *strings,           /* I - .strings file */
 111              char   *buffer,            /* I - Line buffer */
 112              size_t bufsize,            /* I - Size of line buffer */
 113              char   **id,               /* O - Pointer to ID string */
 114              char   **str)              /* O - Pointer to translation string */
 115 {
 116   char  *bufptr;                        /* Pointer into buffer */
 117
 118
 119   while (fgets(buffer, (int)bufsize, strings))
 120   {
 121     if (buffer[0] != '\"')
 122       continue;
 123
 124     *id = buffer + 1;
 125
 126     for (bufptr = buffer + 1; *bufptr && *bufptr != '\"'; bufptr ++)
 127       if (*bufptr == '\\')
 128         bufptr ++;
 129
 130     if (*bufptr != '\"')
 131       continue;
 132
 133     *bufptr++ = '\0';
 134
 135     while (*bufptr && *bufptr != '\"')
 136       bufptr ++;
 137
 138     if (!*bufptr)
 139       continue;
 140
 141     bufptr ++;
 142     *str = bufptr;
 143
 144     for (; *bufptr && *bufptr != '\"'; bufptr ++)
 145       if (*bufptr == '\\')
 146         bufptr ++;
 147
 148     if (*bufptr != '\"')
 149       continue;
 150
 151     *bufptr = '\0';
 152
 153     return (1);
 154   }
 155
 156   return (0);
 157 }
 158
 159
 160 /*
 161  * 'write_po()' - Write a line to the .po file.
 162  */
 163
 164 static void
 165 write_po(FILE       *po,                /* I - .po file */
 166          const char *what,              /* I - Type of string */
 167          const char *s)                 /* I - String to write */
 168 {
 169   fprintf(po, "%s \"%s\"\n", what, s);
 170 }