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/*
* conversion between client encoding and server internal encoding
* (currently mule internal code (mic) is used)
* Tatsuo Ishii
* $Id: conv.c,v 1.2 1998/08/24 01:13:59 momjian Exp $
*/
#include <stdio.h>
#include <string.h>
#include "mb/pg_wchar.h"
/*
* convert bogus chars that cannot be represented in the current encoding
* system.
*/
static void printBogusChar(unsigned char **mic, unsigned char **p)
{
char strbuf[16];
int l = pg_mic_mblen(*mic);
*(*p)++ = '(';
while (l--) {
sprintf(strbuf,"%02x",*(*mic)++);
*(*p)++ = strbuf[0];
*(*p)++ = strbuf[1];
}
*(*p)++ = ')';
}
/*
* SJIS ---> MIC
*/
static void sjis2mic(unsigned char *sjis, unsigned char *p, int len)
{
int c1,c2;
while (len > 0 && (c1 = *sjis++)) {
if (c1 >= 0xa1 && c1 <= 0xdf) { /* 1 byte kana? */
len--;
*p++ = LC_JISX0201K;
*p++ = c1;
} else if (c1 > 0x7f) { /* kanji? */
c2 = *sjis++;
len -= 2;
*p++ = LC_JISX0208;
*p++ = ((c1 & 0x3f)<<1) + 0x9f + (c2 > 0x9e);
*p++ = c2 + ((c2 > 0x9e)? 2 : 0x60) + (c2 < 0x80);
} else { /* should be ASCII */
len--;
*p++ = c1;
}
}
*p = '\0';
}
/*
* MIC ---> SJIS
*/
static void mic2sjis(unsigned char *mic, unsigned char *p, int len)
{
int c1,c2;
while (len > 0 && (c1 = *mic)) {
len -= pg_mic_mblen(mic++);
if (c1 == LC_JISX0201K) {
*p++ = *mic++;
} else if (c1 == LC_JISX0208) {
c1 = *mic++;
c2 = *mic++;
*p++ = ((c1 - 0xa1)>>1) + ((c1 < 0xdf)? 0x81 : 0xc1);
*p++ = c2 - ((c1 & 1)? ((c2 < 0xe0)? 0x61 : 0x60) : 2);
} else if (c1 > 0x7f) { /* cannot convert to SJIS! */
mic--;
printBogusChar(&mic, &p);
} else { /* should be ASCII */
*p++ = c1;
}
}
*p = '\0';
}
/*
* EUC_JP ---> MIC
*/
static void euc_jp2mic(unsigned char *euc, unsigned char *p, int len)
{
int c1;
while (len > 0 && (c1 = *euc++)) {
if (c1 == SS2) { /* 1 byte kana? */
len -= 2;
*p++ = LC_JISX0201K;
*p++ = *euc++;
} else if (c1 == SS3) { /* JIS X0212 kanji? */
len -= 3;
*p++ = LC_JISX0212;
*p++ = *euc++;
*p++ = *euc++;
} else if (c1 & 0x80) { /* kanji? */
len -= 2;
*p++ = LC_JISX0208;
*p++ = c1;
*p++ = *euc++;
} else { /* should be ASCII */
len--;
*p++ = c1;
}
}
*p = '\0';
}
/*
* MIC ---> EUC_JP
*/
static void mic2euc_jp(unsigned char *mic, unsigned char *p, int len)
{
int c1;
while (len > 0 && (c1 = *mic)) {
len -= pg_mic_mblen(mic++);
if (c1 == LC_JISX0201K) {
*p++ = SS2;
*p++ = *mic++;
} else if (c1 == LC_JISX0212) {
*p++ = SS3;
*p++ = *mic++;
*p++ = *mic++;
} else if (c1 == LC_JISX0208) {
*p++ = *mic++;
*p++ = *mic++;
} else if (c1 > 0x7f) { /* cannot convert to EUC_JP! */
mic--;
printBogusChar(&mic, &p);
} else { /* should be ASCII */
*p++ = c1;
}
}
*p = '\0';
}
/*
* EUC_KR ---> MIC
*/
static void euc_kr2mic(unsigned char *euc, unsigned char *p, int len)
{
int c1;
while (len > 0 && (c1 = *euc++)) {
if (c1 & 0x80) {
len -= 2;
*p++ = LC_KS5601;
*p++ = c1;
*p++ = *euc++;
} else { /* should be ASCII */
len--;
*p++ = c1;
}
}
*p = '\0';
}
/*
* MIC ---> EUC_KR
*/
static void mic2euc_kr(unsigned char *mic, unsigned char *p, int len)
{
int c1;
while (len > 0 && (c1 = *mic)) {
len -= pg_mic_mblen(mic++);
if (c1 == LC_KS5601) {
*p++ = *mic++;
*p++ = *mic++;
} else if (c1 > 0x7f) { /* cannot convert to EUC_KR! */
mic--;
printBogusChar(&mic, &p);
} else { /* should be ASCII */
*p++ = c1;
}
}
*p = '\0';
}
/*
* EUC_CN ---> MIC
*/
static void euc_cn2mic(unsigned char *euc, unsigned char *p, int len)
{
int c1;
while (len > 0 && (c1 = *euc++)) {
if (c1 & 0x80) {
len -= 2;
*p++ = LC_GB2312_80;
*p++ = c1;
*p++ = *euc++;
} else { /* should be ASCII */
len--;
*p++ = c1;
}
}
*p = '\0';
}
/*
* MIC ---> EUC_CN
*/
static void mic2euc_cn(unsigned char *mic, unsigned char *p, int len)
{
int c1;
while (len > 0 && (c1 = *mic)) {
len -= pg_mic_mblen(mic++);
if (c1 == LC_GB2312_80) {
*p++ = *mic++;
*p++ = *mic++;
} else if (c1 > 0x7f) { /* cannot convert to EUC_CN! */
mic--;
printBogusChar(&mic, &p);
} else { /* should be ASCII */
*p++ = c1;
}
}
*p = '\0';
}
/*
* EUC_TW ---> MIC
*/
static void euc_tw2mic(unsigned char *euc, unsigned char *p, int len)
{
int c1;
while (len > 0 && (c1 = *euc++)) {
if (c1 == SS2) {
len -= 4;
c1 = *euc++; /* plane No. */
if (c1 == 0xa1) {
*p++ = LC_CNS11643_1;
} else if (c1 == 0xa2) {
*p++ = LC_CNS11643_2;
} else {
*p++ = 0x9d; /* LCPRV2 */
*p++ = 0xa3 - c1 + LC_CNS11643_3;
}
*p++ = *euc++;
*p++ = *euc++;
} else if (c1 & 0x80) { /* CNS11643-1 */
len -= 2;
*p++ = LC_CNS11643_1;
*p++ = c1;
*p++ = *euc++;
} else { /* should be ASCII */
len --;
*p++ = c1;
}
}
*p = '\0';
}
/*
* MIC ---> EUC_TW
*/
static void mic2euc_tw(unsigned char *mic, unsigned char *p, int len)
{
int c1;
while (len > 0 && (c1 = *mic)) {
len -= pg_mic_mblen(mic++);
if (c1 == LC_CNS11643_1 || c1 == LC_CNS11643_2) {
*p++ = *mic++;
*p++ = *mic++;
} else if (c1 == 0x9d) { /* LCPRV2? */
*p++ = SS2;
*p++ = c1 - LC_CNS11643_3 + 0xa3;
*p++ = *mic++;
*p++ = *mic++;
} else if (c1 > 0x7f) { /* cannot convert to EUC_TW! */
mic--;
printBogusChar(&mic, &p);
} else { /* should be ASCII */
*p++ = c1;
}
}
*p = '\0';
}
/*
* LATINn ---> MIC
*/
static void latin2mic(unsigned char *l, unsigned char *p, int len, int lc)
{
int c1;
while (len-- > 0 && (c1 = *l++)) {
if (c1 > 0x7f) { /* Latin1? */
*p++ = lc;
}
*p++ = c1;
}
*p = '\0';
}
/*
* MIC ---> LATINn
*/
static void mic2latin(unsigned char *mic, unsigned char *p, int len, int lc)
{
int c1;
while (len > 0 && (c1 = *mic)) {
len -= pg_mic_mblen(mic++);
if (c1 == lc) {
*p++ = *mic++;
} else if (c1 > 0x7f) {
mic--;
printBogusChar(&mic, &p);
} else { /* should be ASCII */
*p++ = c1;
}
}
*p = '\0';
}
static void latin12mic(unsigned char *l, unsigned char *p, int len)
{
latin2mic(l, p, len, LC_ISO8859_1);
}
static void mic2latin1(unsigned char *mic, unsigned char *p, int len)
{
mic2latin(mic, p, len, LC_ISO8859_1);
}
static void latin22mic(unsigned char *l, unsigned char *p, int len)
{
latin2mic(l, p, len, LC_ISO8859_2);
}
static void mic2latin2(unsigned char *mic, unsigned char *p, int len)
{
mic2latin(mic, p, len, LC_ISO8859_2);
}
static void latin32mic(unsigned char *l, unsigned char *p, int len)
{
latin2mic(l, p, len, LC_ISO8859_3);
}
static void mic2latin3(unsigned char *mic, unsigned char *p, int len)
{
mic2latin(mic, p, len, LC_ISO8859_3);
}
static void latin42mic(unsigned char *l, unsigned char *p, int len)
{
latin2mic(l, p, len, LC_ISO8859_4);
}
static void mic2latin4(unsigned char *mic, unsigned char *p, int len)
{
mic2latin(mic, p, len, LC_ISO8859_4);
}
static void latin52mic(unsigned char *l, unsigned char *p, int len)
{
latin2mic(l, p, len, LC_ISO8859_5);
}
static void mic2latin5(unsigned char *mic, unsigned char *p, int len)
{
mic2latin(mic, p, len, LC_ISO8859_5);
}
/*
* ASCII ---> MIC
*/
static void ascii2mic(unsigned char *l, unsigned char *p, int len)
{
int c1;
while (len-- > 0 && (c1 = *l++)) {
*p++ = (c1 & 0x7f);
}
*p = '\0';
}
/*
* MIC ---> ASCII
*/
static void mic2ascii(unsigned char *mic, unsigned char *p, int len)
{
int c1;
while (len > 0 && (c1 = *mic)) {
if (c1 > 0x7f) {
printBogusChar(&mic, &p);
} else { /* should be ASCII */
*p++ = c1;
}
}
*p = '\0';
}
pg_encoding_conv_tbl pg_conv_tbl[] = {
{SQL_ASCII, "SQL_ASCII", 0, ascii2mic, mic2ascii}, /* SQL/ACII */
{EUC_JP, "EUC_JP", 0, euc_jp2mic, mic2euc_jp}, /* EUC_JP */
{EUC_CN, "EUC_CN", 0, euc_cn2mic, mic2euc_cn}, /* EUC_CN */
{EUC_KR, "EUC_KR", 0, euc_kr2mic, mic2euc_kr}, /* EUC_KR */
{EUC_TW, "EUC_TW", 0, euc_tw2mic, mic2euc_tw}, /* EUC_TW */
{UNICODE, "UNICODE", 0, 0, 0}, /* UNICODE */
{MULE_INTERNAL, "MULE_INTERNAL", 0, 0, 0}, /* MULE_INTERNAL */
{LATIN1, "LATIN1", 0, latin12mic, mic2latin1}, /* ISO 8859 Latin 1 */
{LATIN2, "LATIN2", 0, latin22mic, mic2latin2}, /* ISO 8859 Latin 2 */
{LATIN3, "LATIN3", 0, latin32mic, mic2latin3}, /* ISO 8859 Latin 3 */
{LATIN4, "LATIN4", 0, latin42mic, mic2latin4}, /* ISO 8859 Latin 4 */
{LATIN5, "LATIN5", 0, latin52mic, mic2latin5}, /* ISO 8859 Latin 5 */
{SJIS, "SJIS", 1, sjis2mic, mic2sjis}, /* SJIS */
{-1, "", 0, 0, 0} /* end mark */
};
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