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/*
* $Id: uni.c,v 2.0 2005/05/16 19:08:16 dankogai Exp $
* (c) 1999-2003 Dan Kogai <dankogai@dan.co.jp>
* This library is free software; you can redistribute it and/or
* modify it under the same terms as Perl itself.
*/
#include <stdio.h>
#include <string.h>
#include "uni2euc.h"
#include "euc2uni.h"
#ifndef U8
#define U8 unsigned char
#endif
#ifndef U16
#define U16 unsigned short
#endif
#ifndef U32
#define U32 unsigned long
#endif
U32 _ucs2_euc(U8 *dst, U8 *src, U32 nchar){
U32 result = 0;
U32 len;
char *offset;
for (nchar /= 2; nchar > 0; nchar--, src += 2){
offset = uni2euc[src[0]] + src[1]*4;
strncpy((char *)dst, offset, 4);
len = strlen(offset);
dst += len;
result += len;
}
return result;
}
# define FB_UNI 0xFFFd
# define CHKUTEN(x) (0 <= (x) && (x) < 94*94)
U32 _euc_ucs2(U8 *dst, U8 *src){
U32 result = 0;
U32 kuten;
U16 ucs2;
for (result = 0; *src != '\0'; src++, dst += 2, result += 2){
if (*src <= 0x7F){ /* ASCII */
ucs2 = src[0];
}else if (*src == 0x8e){ /* jisx0201 */
if (src[1]){
ucs2 = j01_uni[src[1]];
src += 1;
}else{
ucs2 = FB_UNI;
}
}else if (*src == 0x8f){ /* jisx0212 */
if (src[1] && src[2]){
kuten = (src[1] - 0xa1)*94 + (src[2] - 0xa1);
ucs2 = CHKUTEN(kuten) ? j12_uni[kuten] : FB_UNI;
src += 2;
}else{
ucs2 = FB_UNI;
if (src[1])
src++;
}
}else{ /* jisx0208 */
if (src[1]){
kuten = (src[0] - 0xa1)*94 + (src[1] - 0xa1);
ucs2 = CHKUTEN(kuten) ? j08_uni[kuten] : FB_UNI;
src += 1;
}else{
ucs2 = FB_UNI;
}
}
dst[0] = ucs2/256; dst[1] = ucs2%256;
}
return result;
}
U32 _ucs2_utf8(U8 *dst, U8 *src, U32 nchar){
U32 ucs2;
U32 result = 0;
for (nchar /= 2; nchar > 0; nchar--, src += 2) {
ucs2 = src[0]*256 + src[1];
if (ucs2 < 0x80){ /* 1 byte */
*dst++ = ucs2;
result += 1;
}else if (ucs2 < 0x800){ /* 2 bytes */
*dst++ = (0xC0 | (ucs2 >> 6));
*dst++ = (0x80 | (ucs2 & 0x3F));
result += 2;
}else{ /* 3 bytes */
*dst++ = (0xE0 | (ucs2 >> 12));
*dst++ = (0x80 | ((ucs2 >> 6) & 0x3F));
*dst++ = (0x80 | (ucs2 & 0x3F));
result += 3;
}
}
*dst = '\0';
return result;
}
U32 _utf8_ucs2(U8 *dst, U8 *src){
U32 ucs2;
U8 c1, c2, c3;
U32 result = 0;
for(; *src != '\0'; src++, result++){
if (*src < 0x80) { /* 1 byte */
ucs2 = *src;
}else if (*src < 0xE0){ /* 2 bytes */
if (src[1]){
c1 = *src++; c2 = *src;
ucs2 = ((c1 & 0x1F) << 6) | (c2 & 0x3F);
}else{
ucs2 = FB_UNI;
}
}else{ /* 3 bytes */
if (src[1] && src[2]){
c1 = *src++; c2 = *src++; c3 = *src;
ucs2 = ((c1 & 0x0F) << 12) | ((c2 & 0x3F) << 6)| (c3 & 0x3F);
}else{
ucs2 = FB_UNI;
if (src[1])
src++;
}
}
*dst++ = (ucs2 & 0xff00) >> 8; /* 1st byte */
*dst++ = (ucs2 & 0xff); /* 2nd byte */;
}
return result * 2;
}
U32 _euc_utf8(U8 *dst, U8 *src){
U32 result = 0;
U32 kuten;
U16 ucs2;
for (result = 0; *src != '\0'; src++){
if (*src <= 0x7F){ /* ASCII */
ucs2 = src[0];
}else if (*src == 0x8e){ /* jisx0201 */
if (src[1]){
ucs2 = j01_uni[src[1]];
src += 1;
}else{
ucs2 = FB_UNI;
}
}else if (*src == 0x8f){ /* jisx0212 */
if (src[1] && src[2]){
kuten = (src[1] - 0xa1)*94 + (src[2] - 0xa1);
ucs2 = CHKUTEN(kuten) ? j12_uni[kuten] : FB_UNI;
src += 2;
}else{
ucs2 = FB_UNI;
if (src[1])
src++;
}
}else{ /* jisx0208 */
if (src[1]){
kuten = (src[0] - 0xa1)*94 + (src[1] - 0xa1);
ucs2 = CHKUTEN(kuten) ? j08_uni[kuten] : FB_UNI;
src += 1;
}else{
ucs2 = FB_UNI;
}
}
if (ucs2 < 0x80){ /* 1 byte */
*dst++ = ucs2;
result += 1;
}else if (ucs2 < 0x800){ /* 2 bytes */
*dst++ = (0xC0 | (ucs2 >> 6));
*dst++ = (0x80 | (ucs2 & 0x3F));
result += 2;
}else{ /* 3 bytes */
*dst++ = (0xE0 | (ucs2 >> 12));
*dst++ = (0x80 | ((ucs2 >> 6) & 0x3F));
*dst++ = (0x80 | (ucs2 & 0x3F));
result += 3;
}
}
*dst = '\0';
return result;
}
U32 _utf8_euc(U8 *dst, U8 *src){
U32 result = 0;
U32 len;
U16 ucs2;
U8 c1, c2, c3;
char *offset;
for(; *src != '\0'; src++){
if (*src < 0x80) { /* 1 byte */
ucs2 = *src;
}else if (*src < 0xE0){ /* 2 bytes */
if (src[1]){
c1 = *src++; c2 = *src;
ucs2 = ((c1 & 0x1F) << 6) | (c2 & 0x3F);
}else{
ucs2 = FB_UNI;
}
}else{ /* 3 bytes */
if (src[1] && src[2]){
c1 = *src++; c2 = *src++; c3 = *src;
ucs2 = ((c1 & 0x0F) << 12) | ((c2 & 0x3F) << 6)| (c3 & 0x3F);
}else{
ucs2 = FB_UNI;
if (src[1]){
src++;
}
}
}
offset = uni2euc[ucs2/256] + (ucs2%256)*4;
strncpy((char *)dst, offset, 4);
len = strlen(offset);
dst += len;
result += len;
}
return result;
}
#ifndef PERL_XS
#include <sys/errno.h>
int main(int argc, char **argv){
U8 buf1[1024], buf2[1024];
int result;
FILE *IN;
if (argc > 1){
IN = fopen(argv[1], "r");
if (IN == NULL){
fprintf(stderr, "Can't open %s; %s\n", argv[1], strerror(errno));
exit(-1);
}
}else{
IN = stdin;
}
#ifdef EUC_UTF8
while(fgets(buf2, 256, IN)){
result = _euc_utf8(buf1, buf2);
fputs(buf1, stdout);
}
#else
while(fgets(buf1, 256, IN)){
result = _utf8_euc(buf2, buf1);
fputs(buf2, stdout);
}
#endif
}
#endif
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