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#include <stdio.h>#include "file.h"
#include "language.h"#include "lang.h"#include "debug.h"#include "string.h"#include "viewport.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"
/* These defines must match the initial bytes in the binary lang file *//* See tools/genlang (TODO: Use common include for both) */#define LANGUAGE_COOKIE 0x1a#define LANGUAGE_VERSION 0x06
#define LANGUAGE_FLAG_RTL 0x01#define LANGUAGE_FLAG_UNITS_FIRST 0x02
#define HEADER_SIZE 4#define SUBHEADER_SIZE 6
static unsigned char language_buffer[MAX_LANGUAGE_SIZE];static unsigned char lang_options = 0;
void lang_init(const unsigned char *builtin, unsigned char **dest, int count){ while(count--) { *dest++ = (unsigned char *)builtin; /* advance pointer to next string */ builtin += strlen((char *)builtin) + 1; }}
int lang_load(const char *filename, const unsigned char *builtin, unsigned char **dest, unsigned char *buffer, unsigned int user_num, int max_lang_size, unsigned int max_id){ int lang_size; int fd = open(filename, O_RDONLY); int retcode=0; unsigned char lang_header[HEADER_SIZE]; unsigned char sub_header[SUBHEADER_SIZE]; unsigned int id, foffset;
if(fd < 0) return 1;
if(read(fd, lang_header, HEADER_SIZE) == HEADER_SIZE && ((lang_header[0] == LANGUAGE_COOKIE) && (lang_header[1] == LANGUAGE_VERSION) && (lang_header[2] == TARGET_ID))) { /* jump to the proper entry in the table of subheaders */ lseek(fd, user_num * SUBHEADER_SIZE, SEEK_CUR); if (read(fd, sub_header, SUBHEADER_SIZE) != SUBHEADER_SIZE) { DEBUGF("Language %s bad subheader %u\n", filename, user_num); retcode = 4; } /* read in information about the requested lang */#if 0 /* unused */ unsigned int num_strings = (sub_header[0]<<8) | sub_header[1];#endif lang_size = (sub_header[2]<<8) | sub_header[3]; foffset = (sub_header[4]<<8) | sub_header[5]; if(lang_size <= max_lang_size) { /* initialize with builtin */ lang_init(builtin, dest, max_id); lseek(fd, foffset, SEEK_SET); read(fd, buffer, lang_size); buffer[max_lang_size - 1] = '\0'; /* ensure buffer is null terminated */ while(lang_size>3) { id = ((buffer[0]<<8) | buffer[1]); /* get two-byte id */ buffer += 2; /* pass the id */ if(id < max_id) {#if 0 DEBUGF("%2x New: %30s ", id, buffer); DEBUGF("Replaces: %s\n", dest[id]);#endif dest[id] = buffer; /* point to this string */ } while(*buffer) { /* pass the string */ lang_size--; buffer++; } lang_size-=3; /* the id and the terminating zero */ buffer++; /* pass the terminating zero-byte */ } } else { DEBUGF("Language %s too large: %d\n", filename, lang_size); retcode = 2; } } else { DEBUGF("Illegal language file\n"); retcode = 3; } close(fd); lang_options = retcode ? 0 : lang_header[3]; return retcode;}
int lang_core_load(const char *filename){ return lang_load(filename, core_language_builtin, language_strings, language_buffer, 0, MAX_LANGUAGE_SIZE, LANG_LAST_INDEX_IN_ARRAY);}
int lang_english_to_id(const char *english){ int i; unsigned char *ptr = (unsigned char *) core_language_builtin; size_t ptrlen, len = strlen(english); for (i = 0; i < LANG_LAST_INDEX_IN_ARRAY; i++) { ptrlen = strlen((char *)ptr); if ((ptrlen == len) && memcmp(ptr, english, ptrlen) == 0) return i; ptr += ptrlen + 1; /* advance pointer to next string */ } return -1;}
const char * lang_id_to_english(int lang_id){ int i; unsigned char *ptr = (unsigned char *) core_language_builtin;
if (lang_id >= 0 && lang_id < LANG_LAST_INDEX_IN_ARRAY) { if (language_strings[0] == ptr) /* already in english */ return str(lang_id);
for (i = 0; i < LANG_LAST_INDEX_IN_ARRAY; i++) { if (i == lang_id) return ptr; ptr += strlen((char *)ptr) + 1; /* advance pointer to next string */ } } return ""; /* Not found */}
int lang_is_rtl(void){ return (lang_options & LANGUAGE_FLAG_RTL) != 0;}
int lang_units_first(void){ return (lang_options & LANGUAGE_FLAG_UNITS_FIRST) != 0;}