source: trunk/src/gcc/libf2c/libI77/endfile.c@ 410

#include "config.h"
#include "f2c.h"
#include "fio.h"

#include <sys/types.h>
#include <unistd.h>

#ifdef KR_headers
extern char *strcpy();
extern FILE *tmpfile();
#else
#undef abs
#undef min
#undef max
#include <stdlib.h>
#include <string.h>
#endif

extern char *f__r_mode[], *f__w_mode[];

#ifdef KR_headers
integer f_end(a) alist *a;
#else
integer f_end(alist *a)
#endif
{
        unit *b;
        FILE *tf;

        if (f__init & 2)
                f__fatal (131, "I/O recursion");
        if(a->aunit>=MXUNIT || a->aunit<0) err(a->aerr,101,"endfile");
        b = &f__units[a->aunit];
        if(b->ufd==NULL) {
                char nbuf[10];
                sprintf(nbuf,"fort.%ld",(long)a->aunit);
                if (tf = fopen(nbuf, f__w_mode[0]))
                        fclose(tf);
                return(0);
                }
        b->uend=1;
        return(b->useek ? t_runc(a) : 0);
}

#ifndef HAVE_FTRUNCATE
 static int
#ifdef KR_headers
copy(from, len, to) FILE *from, *to; register long len;
#else
copy(FILE *from, register long len, FILE *to)
#endif
{
        int len1;
        char buf[BUFSIZ];

        while(fread(buf, len1 = len > BUFSIZ ? BUFSIZ : (int)len, 1, from)) {
                if (!fwrite(buf, len1, 1, to))
                        return 1;
                if ((len -= len1) <= 0)
                        break;
                }
        return 0;
        }
#endif /* !defined(HAVE_FTRUNCATE) */