rsfe.c

来自「gcc-2.95.3 Linux下最常用的C编译器」· C语言 代码 · 共 81 行

/* read sequential formatted external */
#include "f2c.h"
#include "fio.h"
#include "fmt.h"

xrd_SL(Void)
{	int ch;
	if(!f__curunit->uend)
		while((ch=getc(f__cf))!='\n')
			if (ch == EOF) {
				f__curunit->uend = 1;
				break;
				}
	f__cursor=f__recpos=0;
	return(1);
}
x_getc(Void)
{	int ch;
	if(f__curunit->uend) return(EOF);
	ch = getc(f__cf);
	if(ch!=EOF && ch!='\n')
	{	f__recpos++;
		return(ch);
	}
	if(ch=='\n')
	{	(void) ungetc(ch,f__cf);
		return(ch);
	}
	if(f__curunit->uend || feof(f__cf))
	{	errno=0;
		f__curunit->uend=1;
		return(-1);
	}
	return(-1);
}
x_endp(Void)
{
	xrd_SL();
	return f__curunit->uend == 1 ? EOF : 0;
}
x_rev(Void)
{
	(void) xrd_SL();
	return(0);
}
#ifdef KR_headers
integer s_rsfe(a) cilist *a; /* start */
#else
integer s_rsfe(cilist *a) /* start */
#endif
{	int n;
	if(f__init != 1) f_init();
	f__init = 3;
	f__reading=1;
	f__sequential=1;
	f__formatted=1;
	f__external=1;
	if(n=c_sfe(a)) return(n);
	f__elist=a;
	f__cursor=f__recpos=0;
	f__scale=0;
	f__fmtbuf=a->cifmt;
	f__curunit= &f__units[a->ciunit];
	f__cf=f__curunit->ufd;
	if(pars_f(f__fmtbuf)<0) err(a->cierr,100,"startio");
	f__getn= x_getc;
	f__doed= rd_ed;
	f__doned= rd_ned;
	fmt_bg();
	f__doend=x_endp;
	f__donewrec=xrd_SL;
	f__dorevert=x_rev;
	f__cblank=f__curunit->ublnk;
	f__cplus=0;
	if(f__curunit->uwrt && f__nowreading(f__curunit))
		err(a->cierr,errno,"read start");
	if(f__curunit->uend)
		err(f__elist->ciend,(EOF),"read start");
	return(0);
}