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((char *)ptr) + 1; /* advance pointer to next string */
  40     }
  41 }
  42
  43 int lang_load(const char *filename)
  44 {
  45     int fsize;
  46     int fd = open(filename, O_RDONLY);
  47     int retcode=0;
  48     unsigned char lang_header[3];
  49     if(fd == -1)
  50         return 1;
  51     fsize = filesize(fd) - 2;
  52     if(fsize <= MAX_LANGUAGE_SIZE) {
  53         read(fd, lang_header, 3);
  54         if((lang_header[0] == LANGUAGE_COOKIE) &&
  55            (lang_header[1] == LANGUAGE_VERSION) &&
  56            (lang_header[2] == TARGET_ID)) {
  57             read(fd, language_buffer, MAX_LANGUAGE_SIZE);
  58             unsigned char *ptr = language_buffer;
  59             int id;
  60             lang_init();                    /* initialize with builtin */
  61
  62             while(fsize>3) {
  63                 id = (ptr[0]<<8) | ptr[1];  /* get two-byte id */
  64                 ptr+=2;                     /* pass the id */
  65                 if(id < LANG_LAST_INDEX_IN_ARRAY) {
  66 #if 0
  67                     printf("%2x New: %30s ", id, ptr);
  68                     printf("Replaces: %s\n", language_strings[id]);
  69 #endif
  70                     language_strings[id] = ptr; /* point to this string */
  71                 }
  72                 while(*ptr) {               /* pass the string */
  73                     fsize--;
  74                     ptr++;
  75                 }
  76                 fsize-=3; /* the id and the terminating zero */
  77                 ptr++;       /* pass the terminating zero-byte */
  78             }
  79         }
  80         else {
  81             DEBUGF("Illegal language file\n");
  82             retcode = 2;
  83         }
  84     }
  85     else {
  86         DEBUGF("Language %s too large: %d\n", filename, fsize);
  87         retcode = 3;
  88     }
  89     close(fd);
  90     return retcode;
  91 }