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/* $Id: convert.c 1374 2003-11-27 14:11:40Z victor $ */
#include "bbs.h"
#ifdef CONVERT
extern read_write_type write_type;
extern read_write_type read_type;
unsigned char *gb2big(unsigned char *, int *, int);
unsigned char *big2gb(unsigned char *, int *, int);
unsigned char *utf8_uni(unsigned char *, int *, int);
unsigned char *uni_utf8(unsigned char *, int *, int);
unsigned char *uni2big(unsigned char *, int *, int);
unsigned char *big2uni(unsigned char *, int *, int);
static ssize_t gb_read(int fd, void *buf, size_t count)
{
int icount = (int)read(fd, buf, count);
if (count > 0)
gb2big((char *)buf, &icount, 0);
return (size_t)icount;
}
static ssize_t gb_write(int fd, void *buf, size_t count)
{
int icount = (int)count;
big2gb((char *)buf, &icount, 0);
return write(fd, buf, (size_t)icount);
}
static ssize_t utf8_read(int fd, void *buf, size_t count)
{
count = read(fd, buf, count);
if (count > 0) {
int icount = (int)count;
utf8_uni(buf, &icount, 0);
uni2big(buf, &icount, 0);
((char *)buf)[icount] = 0;
return (size_t)icount;
}
return count;
}
static ssize_t utf8_write(int fd, void *buf, size_t count)
{
int icount = (int)count;
big2uni(buf, &icount, 0);
uni_utf8(buf, &icount, 0);
((char *)buf)[icount] = 0;
return write(fd, buf, (size_t)icount);
}
void set_converting_type(int which)
{
if (which == CONV_NORMAL) {
read_type = read;
write_type = (read_write_type)write;
}
else if (which == CONV_GB) {
read_type = gb_read;
write_type = gb_write;
}
else if (which == CONV_UTF8) {
read_type = utf8_read;
write_type = utf8_write;
}
}
#endif
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