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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 Daniel Stenberg
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <file.h>
#include "language.h"
#include "lang.h"
#include "debug.h"
#include "string.h"
/* The following header is generated by the build system and only defines
MAX_LANGUAGE_SIZE to be the size of the largest currently available
language! */
#include "max_language_size.h"
/* both these must match the two initial bytes in the binary lang file */
#define LANGUAGE_COOKIE 0x1a
#define LANGUAGE_VERSION 0x04
static unsigned char language_buffer[MAX_LANGUAGE_SIZE];
void lang_init(void)
{
int i;
unsigned char *ptr = (unsigned char *) language_builtin;
for (i = 0; i < LANG_LAST_INDEX_IN_ARRAY; i++) {
language_strings[i] = ptr;
ptr += strlen((char *)ptr) + 1; /* advance pointer to next string */
}
}
int lang_load(const char *filename)
{
int fsize;
int fd = open(filename, O_RDONLY);
int retcode=0;
unsigned char lang_header[3];
if(fd < 0)
return 1;
fsize = filesize(fd) - 2;
if(fsize <= MAX_LANGUAGE_SIZE) {
read(fd, lang_header, 3);
if((lang_header[0] == LANGUAGE_COOKIE) &&
(lang_header[1] == LANGUAGE_VERSION) &&
(lang_header[2] == TARGET_ID)) {
read(fd, language_buffer, MAX_LANGUAGE_SIZE);
unsigned char *ptr = language_buffer;
int id;
lang_init(); /* initialize with builtin */
while(fsize>3) {
id = (ptr[0]<<8) | ptr[1]; /* get two-byte id */
ptr+=2; /* pass the id */
if(id < LANG_LAST_INDEX_IN_ARRAY) {
#if 0
DEBUGF("%2x New: %30s ", id, ptr);
DEBUGF("Replaces: %s\n", language_strings[id]);
#endif
language_strings[id] = ptr; /* point to this string */
}
while(*ptr) { /* pass the string */
fsize--;
ptr++;
}
fsize-=3; /* the id and the terminating zero */
ptr++; /* pass the terminating zero-byte */
}
}
else {
DEBUGF("Illegal language file\n");
retcode = 2;
}
}
else {
DEBUGF("Language %s too large: %d\n", filename, fsize);
retcode = 3;
}
close(fd);
return retcode;
}
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