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/* -*- mode: c -*-
*
* $Id: iconv_hook_ucs2_cp932.c,v 1.2 2002/06/10 13:24:49 tai Exp $
* Framework Author: Taisuke Yamada (tai@iij.ad.jp)
* Logic Composer: Kunio Miyamoto (wakatono@todo.gr.jp)
* Author: KAJIKI Yoshihiro <kajiki@ylug.org>
* based on the 'iconv_hook_mssjis.c' by Kunio Miyamoto (wakatono@todo.gr.jp)
*/
#include <sys/types.h>
#include <string.h>
#include <dirent.h>
#include <unistd.h>
#include <errno.h>
#include "iconv_hook.h"
#include "ucs2_cp932.h"
/*
* ucs2_cp932_iconv_open()
* by Kunio Miyamoto (wakatono@todo.gr.jp)
* and KAJIKI Yoshihiro <kajiki@ylug.org>
* This code is for iconv() interface compatibility.
* and processes nothing but returns normal return code(fixes to 1).
*/
static iconv_t
ucs2_cp932_iconv_open(const char *oenc, const char *ienc) {
if( ((strncmp(ienc,"UCS-2",5) == 0) || (strncmp(ienc,"UNICODE",7) == 0))
&& ((strncmp(oenc,"CP932",5) == 0) || (strncmp(oenc,"SHIFT-JIS",9) == 0)
|| (strncmp(oenc,"SHIFT_JIS",9) == 0) || (strncmp(oenc,"SJIS",4) == 0)) )
{
return (iconv_t)1;
}
else
{
return (iconv_t)-1;
}
}
/*
* ucs2_cp932_iconv_close()
* by Kunio Miyamoto (wakatono@todo.gr.jp)
* and KAJIKI Yoshihiro <kajiki@ylug.org>
* This code is for iconv() interface compatibility.
* and processes nothing but returns normal return code(fixes to 1).
*/
static int
ucs2_cp932_iconv_close(iconv_t cd) {
return 0;
}
/*
* This is experimental code for processing Microsoft Shift_JIS Code
* This routine uses fixed table_ucs2_cp932[] in "ucs2_cp932.h",
* and does'nt be needed to load conversion table.
*/
size_t ucs2_cp932(unsigned char ucs_1, unsigned char ucs_2,
unsigned char *cp932_1, unsigned char *cp932_2) {
unsigned char *table;
table = table_ucs2_cp932[ucs_1];
if (table == NULL) {
return -1;
}
*cp932_1 = table[(int)ucs_2*2];
*cp932_2 = table[(int)ucs_2*2+1];
if (*cp932_1 == 0xff) {
if (*cp932_2 == 0xff) return -1;
else return 1;
} else return 2;
}
/*
* ucs2_cp932_iconv()
* by KAJIKI Yoshihiro <kajiki@ylug.org>
* Unicode UCS-2 to Microsoft Codepage 932 (Shift_JIS)
*/
static size_t
ucs2_cp932_iconv(iconv_t cd,
char **srcbuf, size_t *srclen, char **outbuf, size_t *outlen) {
unsigned char *src, *dst;
unsigned char ucs_1, ucs_2, cp932_1, cp932_2;
size_t len;
if (! (srclen)) return 0;
if (! (outlen) || outbuf == NULL || *outbuf == NULL) {
errno=E2BIG;
return -1;
}
if (srcbuf == NULL || *srcbuf == NULL) return 0;
src = (unsigned char *)*srcbuf;
dst = (unsigned char *)*outbuf;
while (*srclen && *outlen) {
ucs_1 = *src++;
ucs_2 = *src++;
*srclen-=2;
len = ucs2_cp932(ucs_1, ucs_2, &cp932_1, &cp932_2);
if (len == -1) {
*srcbuf=(char *)(src-2);
errno=EILSEQ;
return -1;
}
if (len == 1) {
*dst++ = cp932_2;
*outlen-=1;
} else {
*dst++ = cp932_1;
*dst++ = cp932_2;
*outlen-=2;
}
}
*srcbuf=(char *)src;
*outbuf=(char *)dst;
if (! (*outlen)) *dst++='\0';
if (! (*srclen)) return 0;
errno=E2BIG;
return -1;
}
static iconv_hook_module iconv_hook_ucs2_cp932 = {
ucs2_cp932_iconv,
ucs2_cp932_iconv_open,
ucs2_cp932_iconv_close,
};
iconv_hook_module *
iconv_hook_ucs2_cp932_init(void) {
return &iconv_hook_ucs2_cp932;
}
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