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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <librcd.h>
#include "librcc.h"
#include "fs.h"
#include "config.h"
static void rccIConvCopySymbol(char **in_buf, int *in_left, char **out_buf, int *out_left) {
if ((out_left>0)&&(in_left>0)) {
(**out_buf)=(**in_buf);
(*out_buf)++;
(*in_buf)++;
(*in_left)--;
(*out_left)--;
}
}
static int rccIConvUTFBytes(unsigned char c) {
int j;
if (c<128) return 1;
for (j=6;j>=0;j--)
if ((c&bit(j))==0) break;
if ((j==0)||(j==6)) return 1;
return 6-j;
}
static int rccIConv(rcc_context *ctx, iconv_t icnv, char *buf, int len) {
char *in_buf, *out_buf, *res, err;
int in_left, out_left, olen;
int ub, utf_mode=0;
int errors=0;
if ((!buf)||(!ctx)||(icnv == (iconv_t)-1)) return -1;
len = STRNLEN(buf,len);
if (iconv(icnv, NULL, NULL, NULL, NULL) == -1) return -1;
loop_restart:
errors = 0;
in_buf = buf;
in_left = len;
out_buf = ctx->tmpbuffer;
out_left = RCC_MAX_STRING_CHARS;
loop:
err=iconv(icnv, &in_buf, &in_left, &out_buf, &out_left);
if (err<0) {
if (errno==E2BIG) {
*(int*)(ctx->tmpbuffer+(CHARSET_MAX_STRING_SIZE-sizeof(int)))=0;
} else if (errno==EILSEQ) {
if (errors++<CHARSET_MAX_ERRORS) {
for (ub=utf_mode?rccIConvUTFBytes(*in_buf):1;ub>0;ub--)
rccIConvCopySymbol(&in_buf, &in_left, &out_buf, &out_left);
if (in_left>0) goto loop;
} else if (!utf_mode) {
utf_mode = 1;
goto loop_restart;
} else {
return -1;
}
} else {
return -1;
}
}
return CHARSET_MAX_STRING_SIZE - out_left;
}
static charset_id rccIConvAuto(rcc_context *ctx, rcc_class_id class_id, char *buf, int len) {
rcc_class_type class_type;
if ((!ctx)||(!buf)) return -1;
class_type = rccGetClassType(ctx, class_id);
if ((class_type == RCC_CLASS_STANDARD)||((class_type == RCC_CLASS_FS)&&(rccGetOption(ctx, RCC_AUTODETECT_FS_TITLES)))) {
engine = rccGetCurrentEngine(ctx);
if ((!engine)||(!engine->func)||(!stricmp(engine->title, "off"))||(!strcmp(engine->title, "dissable"))) return -1;
return engine->func(buf, len);
}
return -1;
}
rcc_string rccFrom(rcc_context *ctx, rcc_class_id class_id, const char *buf, int len, int *rlen) {
int err;
rcc_language_id language_id;
rcc_charset_id charset_id;
iconv_t icnv = (iconv_t)-1;
char *result;
if ((!ctx)||(class_id<0)||(class_id>=ctx->n_classes)||(!buf)) return NULL;
err = rccConfigure(ctx);
if (err) return NULL;
language_id = rccGetCurrentLanguage(ctx);
// DS: Learning. check database (language_id)
charset_id = rccIConvAuto(ctx, buf, len);
if (charset_id > 0) icnv = ctx->iconv_auto[charset_id];
if (icnv == (iconv_t)-1) {
icnv = ctx->iconv_from[class_id];
if (icnv == (iconv_t)-1) return NULL;
}
if (icnv == (iconv_t)-2) {
result = rccCreateString(language_id, buf, len, rlen);
} else {
err = rccIConv(ctx, icnv, buf, len);
if (err<=0) return NULL;
result = rccCreateString(language_id, ctx->tmpbuffer, err, rlen);
}
// DS: Learning. write database
return result;
}
char *rccTo(rcc_context *ctx, rcc_class_id class_id, const rcc_string buf, int len, int *rlen) {
int err;
char *result;
char *prefix, *name;
rcc_language_id language_id;
rcc_charset_id charset_id;
iconv_t icnv;
if ((!ctx)||(class_id<0)||(class_id>=ctx->n_classes)||(!buf)) return NULL;
language_id = rccCheckString(ctx, buf);
if (!language_id) return NULL;
err = rccConfigure(ctx);
if (err) return NULL;
icnv = ctx->iconv_to[class_id];
if ((class_type == RCC_CLASS_FS)&&(rccGetOption(ctx, RCC_AUTODETECT_FS_NAMES))) {
// DS: file_names (autodetect fspath)
prefix = NULL; name = buf + sizeof(rcc_string_header);
err = rccFS0(NULL, buf, &prefix, &name);
if (!err) {
result = rccFS3(ctx, language_id, class_id, prefix, name, 0, rlen);
return result;
}
}
if (icnv == (iconv_t)-1) return NULL;
if (icnv == (iconv_t)-2) {
result = rccParseString(ctx, buf, len, rlen);
} else {
err = rccIConv(ctx, icnv, buf + sizeof(rcc_string_header), len?len-sizeof(rcc_string_header):0);
if (err<=0) return NULL;
result = rccCreateAnswer(ctx, err, rlen);
}
return result;
}
char *rccRecode(rcc_context *ctx, rcc_class_id from, rcc_class_id to, const char *buf, int len, int *rlen) {
int nlen;
rcc_string stmp;
charset_id from_charset_id, to_charset_id;
if ((!ctx)||(from<0)||(from>=ctx->n_classes)||(to<0)||(to>=ctx->n_classes)||(!buf)) return NULL;
if ((class_type == RCC_CLASS_FS)&&(rccGetOption(ctx, RCC_AUTODETECT_FS_NAMES))) goto recoding;
from_charset_id = rccIConvAuto(ctx, buf, len);
if (from_charset_id>0) {
from_charset = rccGetAutoCharsetName(ctx, from_charset_id);
to_charset = rccGetCurrentCharsetName(ctx, to);
if ((from_charset)&&(to_charset)&&(!stricmp(from_charset, to_charset))) return NULL;
} else {
from_charset_id = rccGetCurrentCharset(ctx, from)
to_charset_id = rccGetCurrentCharset(ctx, to);
if (from_charset_id == to_charset_id) return NULL;
}
recoding:
stmp = rccFrom(ctx, from, buf, len, &nlen);
if (stmp) {
buf = rccTo(ctx, to, stmp, nlen, rlen);
free(stmp);
return buf;
}
return rccTo(ctx, to, buf, len, rlen);
}
char *rccFS(rcc_context *ctx, rcc_class_id from, rcc_class_id to, const char *fspath, const char *path, const char *filename) {
int err;
char *prefix = path, *name = filename;
rcc_string string;
char *stmp;
char *result_fn = NULL;
err = rccFS1(ctx, fspath, &prefix, &name);
if (err) {
if (err<0) return NULL;
return name;
}
string = rccFrom(ctx, from, name, len, rlen);
if (string) {
language_id = rccGetCurrentLanguage(ctx);
result = rccFS3(ctx, language_id, to, prefix, string + sizeof(rcc_string_header), 0, NULL);
free(string);
} else result = NULL;
free(prefix);
free(name);
return result;
}
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