196 lines
3.3 KiB
C
196 lines
3.3 KiB
C
#include "f2c.h"
|
|
#include "fio.h"
|
|
#ifndef NON_UNIX_STDIO
|
|
#include "sys/types.h"
|
|
#endif
|
|
#include "rawio.h"
|
|
|
|
#ifdef KR_headers
|
|
extern char *strcpy();
|
|
#else
|
|
#undef abs
|
|
#undef min
|
|
#undef max
|
|
#include "stdlib.h"
|
|
#include "string.h"
|
|
#endif
|
|
|
|
#ifdef NON_UNIX_STDIO
|
|
#ifndef unlink
|
|
#define unlink remove
|
|
#endif
|
|
#else
|
|
#ifdef MSDOS
|
|
#include "io.h"
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef NON_UNIX_STDIO
|
|
extern char *f__r_mode[], *f__w_mode[];
|
|
#endif
|
|
|
|
#ifdef KR_headers
|
|
integer f_end(a) alist *a;
|
|
#else
|
|
integer f_end(alist *a)
|
|
#endif
|
|
{
|
|
unit *b;
|
|
if(a->aunit>=MXUNIT || a->aunit<0) err(a->aerr,101,"endfile");
|
|
b = &f__units[a->aunit];
|
|
if(b->ufd==NULL) {
|
|
char nbuf[10];
|
|
(void) sprintf(nbuf,"fort.%ld",a->aunit);
|
|
#ifdef NON_UNIX_STDIO
|
|
{ FILE *tf;
|
|
if ( (tf = fopen(nbuf, f__w_mode[0])) )
|
|
fclose(tf);
|
|
}
|
|
#else
|
|
close(creat(nbuf, 0666));
|
|
#endif
|
|
return(0);
|
|
}
|
|
b->uend=1;
|
|
return(b->useek ? t_runc(a) : 0);
|
|
}
|
|
|
|
static int
|
|
#ifdef NON_UNIX_STDIO
|
|
#ifdef KR_headers
|
|
copy(from, len, to) char *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;
|
|
}
|
|
#else
|
|
#ifdef KR_headers
|
|
copy(from, len, to) char *from, *to; register long len;
|
|
#else
|
|
copy(char *from, register long len, char *to)
|
|
#endif
|
|
{
|
|
register int n;
|
|
int k, rc = 0, tmp;
|
|
char buf[BUFSIZ];
|
|
|
|
if ((k = open(from, O_RDONLY)) < 0)
|
|
return 1;
|
|
if ((tmp = creat(to,0666)) < 0)
|
|
return 1;
|
|
while((n = read(k, buf, len > BUFSIZ ? BUFSIZ : (int)len)) > 0) {
|
|
if (write(tmp, buf, n) != n)
|
|
{ rc = 1; break; }
|
|
if ((len -= n) <= 0)
|
|
break;
|
|
}
|
|
close(k);
|
|
close(tmp);
|
|
return n < 0 ? 1 : rc;
|
|
}
|
|
#endif
|
|
|
|
#ifndef L_tmpnam
|
|
#define L_tmpnam 16
|
|
#endif
|
|
|
|
int
|
|
#ifdef KR_headers
|
|
t_runc(a) alist *a;
|
|
#else
|
|
t_runc(alist *a)
|
|
#endif
|
|
{
|
|
char nm[L_tmpnam+12]; /* extra space in case L_tmpnam is tiny */
|
|
long loc, len;
|
|
unit *b;
|
|
#ifdef NON_UNIX_STDIO
|
|
FILE *bf, *tf;
|
|
#else
|
|
FILE *bf;
|
|
#endif
|
|
int rc = 0;
|
|
|
|
b = &f__units[a->aunit];
|
|
if(b->url)
|
|
return(0); /*don't truncate direct files*/
|
|
loc=ftell(bf = b->ufd);
|
|
fseek(bf,0L,SEEK_END);
|
|
len=ftell(bf);
|
|
if (loc >= len || b->useek == 0 || b->ufnm == NULL)
|
|
return(0);
|
|
#ifdef NON_UNIX_STDIO
|
|
fclose(b->ufd);
|
|
#else
|
|
rewind(b->ufd); /* empty buffer */
|
|
#endif
|
|
if (!loc) {
|
|
#ifdef NON_UNIX_STDIO
|
|
if (!(bf = fopen(b->ufnm, f__w_mode[b->ufmt])))
|
|
#else
|
|
if (close(creat(b->ufnm,0666)))
|
|
#endif
|
|
rc = 1;
|
|
if (b->uwrt)
|
|
b->uwrt = 1;
|
|
goto done;
|
|
}
|
|
#ifdef _POSIX_SOURCE
|
|
tmpnam(nm);
|
|
#else
|
|
strcpy(nm,"tmp.FXXXXXX");
|
|
mktemp(nm);
|
|
#endif
|
|
#ifdef NON_UNIX_STDIO
|
|
if (!(bf = fopen(b->ufnm, f__r_mode[0]))) {
|
|
bad:
|
|
rc = 1;
|
|
goto done;
|
|
}
|
|
if (!(tf = fopen(nm, f__w_mode[0])))
|
|
goto bad;
|
|
if (copy(bf, loc, tf)) {
|
|
bad1:
|
|
rc = 1;
|
|
goto done1;
|
|
}
|
|
if (!(bf = freopen(b->ufnm, f__w_mode[0], bf)))
|
|
goto bad1;
|
|
if (!(tf = freopen(nm, f__r_mode[0], tf)))
|
|
goto bad1;
|
|
if (copy(tf, loc, bf))
|
|
goto bad1;
|
|
if (f__w_mode[0] != f__w_mode[b->ufmt]) {
|
|
if (!(bf = freopen(b->ufnm, f__w_mode[b->ufmt|2], bf)))
|
|
goto bad1;
|
|
fseek(bf, loc, SEEK_SET);
|
|
}
|
|
done1:
|
|
fclose(tf);
|
|
unlink(nm);
|
|
done:
|
|
f__cf = b->ufd = bf;
|
|
#else
|
|
if (copy(b->ufnm, loc, nm)
|
|
|| copy(nm, loc, b->ufnm))
|
|
rc = 1;
|
|
unlink(nm);
|
|
fseek(b->ufd, loc, SEEK_SET);
|
|
done:
|
|
#endif
|
|
if (rc)
|
|
err(a->aerr,111,"endfile");
|
|
return 0;
|
|
}
|