apps/language.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 Daniel Stenberg
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 #include <file.h>
  21 #if defined(SIMULATOR) && defined(__MINGW32__)
  22 extern int printf(const char *format, ...);
  23 #endif
  24
  25 #include "language.h"
  26 #include "lang.h"
  27 #include "debug.h"
  28 #include "string.h"
  29
  30 static unsigned char language_buffer[MAX_LANGUAGE_SIZE];
  31
  32 void lang_init(void)
  33 {
  34     int i;
  35     unsigned char *ptr = (unsigned char *) language_builtin;
  36
  37     for (i = 0; i < LANG_LAST_INDEX_IN_ARRAY; i++) {
  38         language_strings[i] = ptr;
  39         ptr += strlen(ptr) + 1; /* advance pointer to next string */
  40     }
  41 }
  42
  43 int lang_load(const char *filename)
  44 {
  45     int filesize;
  46     int fd = open(filename, O_RDONLY);
  47     int retcode=0;
  48     if(fd == -1)
  49         return 1;
  50     filesize = read(fd, language_buffer, MAX_LANGUAGE_SIZE);
  51     if(filesize != MAX_LANGUAGE_SIZE) {
  52         if((language_buffer[0] == LANGUAGE_COOKIE) &&
  53            (language_buffer[1] == LANGUAGE_VERSION)) {
  54             unsigned char *ptr=&language_buffer[2];
  55             int id;
  56             lang_init();                    /* initialize with builtin */
  57             filesize-=2;
  58
  59             while(filesize>3) {
  60                 id = (ptr[0]<<8) | ptr[1];  /* get two-byte id */
  61                 ptr+=2;                     /* pass the id */
  62                 if(id < LANG_LAST_INDEX_IN_ARRAY) {
  63 #if 0
  64                     printf("%2x New: %30s ", id, ptr);
  65                     printf("Replaces: %s\n", language_strings[id]);
  66 #endif
  67                     language_strings[id] = ptr; /* point to this string */
  68                 }
  69                 while(*ptr) {               /* pass the string */
  70                     filesize--;
  71                     ptr++;
  72                 }
  73                 filesize-=3; /* the id and the terminating zero */
  74                 ptr++;       /* pass the terminating zero-byte */
  75             }
  76         }
  77         else {
  78             DEBUGF("Illegal language file\n");
  79             retcode = 2;
  80         }
  81     }
  82     else {
  83         DEBUGF("Language %s too large: %d\n", filename, filesize);
  84         retcode = 3;
  85     }
  86     close(fd);
  87     return retcode;
  88 }