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/*
LibRCC - module handling internal string representation
Copyright (C) 2005-2008 Suren A. Chilingaryan <csa@dside.dyndns.org>
This program is free software; you can redistribute it and/or modify it
under the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../config.h"
#include "internal.h"
#include "rccstring.h"
rcc_string rccCreateString(rcc_language_id language_id, const char *buf, size_t len) {
char *res;
rcc_string_header *header;
if (!buf) return NULL;
if (!len) len = strlen(buf);
res = (char*)malloc(len+sizeof(rcc_string_header)+1);
if (!res) return NULL;
memcpy(res + sizeof(rcc_string_header), buf, len);
res[sizeof(rcc_string_header) + len] = 0;
memset(res, 0xFF, sizeof(rcc_string_header));
header = (rcc_string_header*)res;
header->magic = RCC_STRING_MAGIC;
header->language_id = language_id;
return (rcc_string)res;
}
int rccStringSetLang(rcc_string string, const char *sn) {
if ((!string)||(!sn)||(strlen(sn)!=2)) return -1;
memcpy(&((rcc_string_header*)string)->language,sn,2);
return 0;
}
int rccStringFixID(rcc_string string, rcc_context ctx) {
char lang[3];
const char *curlang;
rcc_language_config config;
rcc_language_id language_id;
rcc_string_header *header;
if ((!string)||(!ctx)||(!rccStringCheck(string))) return -1;
header = (rcc_string_header*)string;
memcpy(lang, header->language, 2); lang[3] = 0;
curlang = rccGetLanguageName(ctx, header->language_id);
if ((curlang)&&(!strcasecmp(lang, curlang))) return 0;
language_id = rccGetLanguageByName(ctx, lang);
if ((language_id == (rcc_language_id)-1)||(language_id == 0)) return -1;
config = rccGetConfig(ctx, language_id);
if (!config) return -1;
header->language_id = language_id;
return 0;
}
int rccStringChangeID(rcc_string string, rcc_language_id language_id) {
if ((!string)&&(language_id != (rcc_language_id)-1)) return -1;
// printf("ChangingID %lu: %s\n", language_id, string);
((rcc_string_header*)string)->language_id = language_id;
return 0;
}
void rccStringFree(rcc_string str) {
if (str) free(str);
}
size_t rccStringCheck(const char *str) {
size_t len;
if (!str) return 0;
len = strlen(str);
if (len>sizeof(rcc_string_header)) {
len-=sizeof(rcc_string_header);
if (((rcc_string_header*)str)->magic == RCC_STRING_MAGIC) return len;
}
return 0;
}
size_t rccStringSizedCheck(const char *str, size_t len) {
size_t newlen;
if (!str) return 0;
newlen = len?len:strlen(str);
if (newlen>sizeof(rcc_string_header)) {
if ((len==newlen)&&(!str[newlen-2])) return 0;
newlen-=sizeof(rcc_string_header);
} else return 0;
if (((rcc_string_header*)str)->magic == RCC_STRING_MAGIC) return newlen;
return 0;
}
rcc_language_id rccStringGetLanguage(rcc_const_string str) {
if (!str) return (rcc_language_id)-1;
return ((rcc_string_header*)str)->language_id;
}
const char *rccStringGetString(rcc_const_string str) {
return (const char *)str + sizeof(rcc_string_header);
}
char *rccStringExtractString(rcc_const_string str) {
size_t len;
char *res;
len = rccStringCheck(str);
if (!len) return NULL;
res = (char*)malloc(len+1);
if (!res) return NULL;
memcpy(res, rccStringGetString(str), len);
res[len] = 0;
return res;
}
const char *rccGetString(const char *str) {
if (rccStringCheck(str)) return rccStringGetString((const rcc_string)str);
return str;
}
const char *rccSizedGetString(const char *str, size_t len) {
size_t newlen;
newlen = rccStringSizedCheck(str, len);
if (newlen) {
return rccStringGetString((const rcc_string)str);
}
return (const char *)str;
}
int rccStringCmp(const char *str1, const char *str2) {
return strcmp(rccGetString(str1), rccGetString(str2));
}
int rccStringNCmp(const char *str1, const char *str2, size_t n) {
return strncmp(rccGetString(str1), rccGetString(str2), n);
}
int rccStringCaseCmp(const char *str1, const char *str2) {
return strcasecmp(rccGetString(str1), rccGetString(str2));
}
int rccStringNCaseCmp(const char *str1, const char *str2, size_t n) {
return strncasecmp(rccGetString(str1), rccGetString(str2), n);
}
#ifndef HAVE_STRNLEN
int rccStrnlen(const char *str, size_t size) {
unsigned int i;
for (i=0;((i<size)&&(str[i]));i++);
return i;
}
#endif /* HAVE_STRNLEN */
int rccIsASCII(const char *str) {
unsigned int i;
for (i=0;str[i];i++)
if ((unsigned char)str[i]>0x7F) return 0;
return 1;
}
size_t rccStringSizedGetChars(const char *str, size_t size) {
size_t i, skip = 0, chars = 0;
const unsigned char *tmp;
tmp = (unsigned char*)rccGetString(str);
for (i=0;(size?(size-i):tmp[i]);i++) {
if (skip) {
skip--;
continue;
}
if (tmp[i]<0x80) skip = 0;
else if ((tmp[i]>0xBF)&&(tmp[i]<0xE0)) skip = 1;
else if ((tmp[i]>0xDF)&&(tmp[i]<0xF0)) skip = 2;
else if ((tmp[i]>0xEF)&&(tmp[i]<0xF8)) skip = 3;
else skip = 4;
chars++;
}
return chars;
}
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