/* $OpenXM: OpenXM_contrib2/asir2000/parse/stdio.c,v 1.1 1999/12/03 07:39:12 noro Exp $ */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include "w_stdio.h"
static struct w_buf {
int inlen, inpos;
int outpos;
char inbuf[2*BUFSIZ];
char outbuf[2*BUFSIZ];
} W_BUF;
static int noflush;
#define INBUF_EMPTY (W_BUF.inpos >= W_BUF.inlen)
int w_filbuf(void)
{
int status = get_line(W_BUF.inbuf);
W_BUF.inpos = 0;
W_BUF.inlen = strlen(W_BUF.inbuf);
return status;
}
int w_flushbuf(void) {
W_BUF.outbuf[W_BUF.outpos] = 0;
W_BUF.outpos = 0;
put_line(W_BUF.outbuf);
return 0;
}
int w_fflush(FILE *file)
{
if ( file == stdout || file == stderr )
return w_flushbuf();
else
return fflush(file);
}
void w_noflush_stderr(int flag)
{
noflush = flag;
}
int get_char(void)
{
int status = 0;
if ( INBUF_EMPTY )
status = w_filbuf();
if ( status )
return EOF;
else
return (int)W_BUF.inbuf[W_BUF.inpos++];
}
char *get_string(char *s, int n)
{
int i;
char *p;
int status = 0;
if ( INBUF_EMPTY )
status = w_filbuf();
if ( status )
return NULL;
for ( i = 0, p = s; i < n && !INBUF_EMPTY && W_BUF.inbuf[i]; i++ )
*p++ = W_BUF.inbuf[W_BUF.inpos++];
if ( i < n )
*p = 0;
return s;
}
int w_fgetc(FILE *file)
{
if ( file == stdin )
return get_char();
else
return fgetc(file);
}
int unget_char(int c)
{
W_BUF.inbuf[--W_BUF.inpos] = (char )c;
return c;
}
int put_char(int c,FILE *file)
{
static char s[2];
s[0] = (char)c;
put_string(s,file);
return c;
}
int put_string(char *s,FILE *file)
{
char c;
while ( 1 ) {
for ( ; (c = *s) && W_BUF.outpos < BUFSIZ; s++ ) {
W_BUF.outbuf[W_BUF.outpos++] = c;
if ( c == '\n' ) {
W_BUF.outbuf[W_BUF.outpos-1] = '\r';
W_BUF.outbuf[W_BUF.outpos++] = '\n';
w_flushbuf();
}
}
if ( !c )
break;
else if ( W_BUF.outpos == BUFSIZ )
w_flushbuf();
}
if (file == stderr && !noflush)
w_flushbuf();
return 0;
}
char *w_fgets(char *s,int n, FILE *file)
{
if ( file == stdin )
return get_string(s,n);
else
return fgets(s,n,file);
}
int w_ungetc(int c, FILE *file)
{
if ( file == stdin )
return unget_char(c);
else
return ungetc(c,file);
}
int w_fputc(int c, FILE *file)
{
if ( file == stdout || file == stderr )
return put_char(c,file);
else
return fputc(c,file);
}
int w_fputs(char *s, FILE *file)
{
int status;
if ( file == stdout || file == stderr )
return put_string(s,file);
else
return fputs(s,file);
}
int w_printf(char *format, ...)
{
va_list ap;
int status;
char buf[BUFSIZ];
va_start(ap,format);
status = vsprintf(buf,format,ap);
put_string(buf,stdout);
return status;
}
int w_fprintf(FILE *file, char *format, ...)
{
va_list ap;
int status;
char buf[BUFSIZ];
va_start(ap,format);
if ( file == stdout || file == stderr ) {
status = vsprintf(buf,format,ap);
put_string(buf,file);
} else {
status = vfprintf(file,format,ap);
}
va_end(ap);
return status;
}