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/*
LibRCC - module providing charset recoding for the specified language
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 "fs.h"
static rcc_autocharset_id rccConfigDetectCharsetInternal(rcc_language_config config, rcc_class_id class_id, const char *buf, size_t len) {
int err;
rcc_context ctx;
rcc_class_type class_type;
rcc_autocharset_id autocharset_id;
if ((!buf)||(!config)) return (rcc_autocharset_id)-1;
ctx = config->ctx;
err = rccConfigConfigure(config);
if (err) return (rcc_autocharset_id)-1;
class_type = rccGetClassType(ctx, class_id);
if ((class_type != RCC_CLASS_FS)||((class_type == RCC_CLASS_FS)&&(rccGetOption(ctx, RCC_OPTION_AUTODETECT_FS_TITLES)))) {
rccMutexLock(config->mutex);
autocharset_id = rccEngineDetectCharset(&config->engine_ctx, buf, len);
rccMutexUnLock(config->mutex);
return autocharset_id;
}
return (rcc_autocharset_id)-1;
}
rcc_autocharset_id rccConfigDetectCharset(rcc_language_config config, rcc_class_id class_id, const char *buf, size_t len) {
return rccConfigDetectCharsetInternal(config, class_id, buf, len);
}
rcc_string rccConfigSizedFrom(rcc_language_config config, rcc_class_id class_id, const char *buf, size_t len) {
rcc_context ctx;
rcc_class_type class_type;
rcc_string result;
rcc_option_value usedb4;
rcc_autocharset_id charset_id;
const char *charset;
if (!config) return NULL;
ctx = config->ctx;
if (rccStringSizedCheck(buf, len)) return NULL;
usedb4 = rccGetOption(ctx, RCC_OPTION_LEARNING_MODE);
if (usedb4&RCC_OPTION_LEARNING_FLAG_USE) {
result = rccDb4GetKey(ctx->db4ctx, buf, len);
if (result) {
if (rccStringFixID(result, ctx)) free(result);
else return result;
}
}
class_type = rccGetClassType(ctx, class_id);
if (class_type == RCC_CLASS_KNOWN) charset_id = (rcc_autocharset_id)-1;
else charset_id = rccConfigDetectCharset(config, class_id, buf, len);
if (charset_id != (rcc_autocharset_id)-1)
charset = rccConfigGetAutoCharsetName(config, charset_id);
else
charset = rccConfigGetCurrentCharsetName(config, class_id);
if (charset) {
result = rccSizedFromCharset(ctx, charset, buf, len);
if (result) rccStringChangeID(result, rccGetLanguageByName(ctx, config->language->sn));
return result;
}
return NULL;
}
/* The supplied config have priority over language tag in the buf! */
char *rccConfigSizedTo(rcc_language_config config, rcc_class_id class_id, rcc_const_string buf, size_t *rlen) {
char *result;
const char *charset;
if (!config) return NULL;
if ((rccGetClassType(config->ctx, class_id) == RCC_CLASS_FS)&&(rccGetOption(config->ctx, RCC_OPTION_AUTODETECT_FS_NAMES))) {
result = rccFS5(config->ctx, config, class_id, rccStringGetString(buf));
if (result) {
if (rlen) *rlen = strlen(result);
return result;
}
}
charset = rccConfigGetCurrentCharsetName(config, class_id);
if (charset)
return rccSizedToCharset(config->ctx, charset, buf, rlen);
return NULL;
}
char *rccConfigSizedRecode(rcc_language_config config, rcc_class_id from, rcc_class_id to, const char *buf, size_t len, size_t *rlen) {
rcc_context ctx;
rcc_class_type class_type;
rcc_string result;
rcc_option_value usedb4;
rcc_autocharset_id charset_id;
rcc_string stmp;
const char *tocharset, *fromcharset;
if (!config) return NULL;
ctx = config->ctx;
if (rccStringSizedCheck(buf, len)) return NULL;
usedb4 = rccGetOption(ctx, RCC_OPTION_LEARNING_MODE);
if (usedb4&RCC_OPTION_LEARNING_FLAG_USE) {
stmp = rccDb4GetKey(ctx->db4ctx, buf, len);
if (stmp) {
if (rccStringFixID(stmp, ctx)) free(stmp);
else {
result = rccConfigSizedTo(config, to, stmp, rlen);
free(stmp);
return result;
}
}
}
class_type = rccGetClassType(ctx, from);
if (class_type == RCC_CLASS_KNOWN) charset_id = (rcc_autocharset_id)-1;
else charset_id = rccConfigDetectCharset(config, from, buf, len);
if (charset_id != (rcc_autocharset_id)-1)
fromcharset = rccConfigGetAutoCharsetName(config, charset_id);
else
fromcharset = rccConfigGetCurrentCharsetName(config, from);
tocharset = rccConfigGetCurrentCharsetName(config, to);
if ((fromcharset)&&(tocharset))
return rccSizedRecodeCharsets(ctx, fromcharset, tocharset, buf, len, rlen);
return NULL;
}
char *rccConfigSizedRecodeToCharset(rcc_language_config config, rcc_class_id class_id, const char *charset, rcc_const_string buf, size_t len, size_t *rlen) {
rcc_context ctx;
rcc_class_type class_type;
rcc_string result;
rcc_option_value usedb4;
rcc_autocharset_id charset_id;
rcc_string stmp;
const char *ocharset;
if (!config) return NULL;
ctx = config->ctx;
if (rccStringSizedCheck(buf, len)) return NULL;
usedb4 = rccGetOption(ctx, RCC_OPTION_LEARNING_MODE);
if (usedb4&RCC_OPTION_LEARNING_FLAG_USE) {
stmp = rccDb4GetKey(ctx->db4ctx, buf, len);
if (stmp) {
if (rccStringFixID(stmp, ctx)) free(stmp);
else {
result = rccSizedToCharset(ctx, charset, stmp, rlen);
free(stmp);
return result;
}
}
}
class_type = rccGetClassType(ctx, class_id);
if (class_type == RCC_CLASS_KNOWN) charset_id = (rcc_autocharset_id)-1;
else charset_id = rccConfigDetectCharset(config, class_id, buf, len);
if (charset_id != (rcc_autocharset_id)-1)
ocharset = rccConfigGetAutoCharsetName(config, charset_id);
else
ocharset = rccConfigGetCurrentCharsetName(config, class_id);
if (ocharset)
return rccSizedRecodeCharsets(ctx, ocharset, charset, buf, len, rlen);
return NULL;
}
char *rccConfigSizedRecodeFromCharset(rcc_language_config config, rcc_class_id class_id, const char *charset, const char *buf, size_t len, size_t *rlen) {
rcc_context ctx;
const char *ocharset;
if (!config) return NULL;
ctx = config->ctx;
ocharset = rccConfigGetCurrentCharsetName(config, class_id);
if (ocharset)
return rccSizedRecodeCharsets(ctx, charset, ocharset, buf, len, rlen);
return NULL;
}
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