You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
103 lines
1.7 KiB
103 lines
1.7 KiB
#include "f2c.h"
|
|
#include "fio.h"
|
|
|
|
#undef abs
|
|
#undef min
|
|
#undef max
|
|
#include "stdlib.h"
|
|
#include "string.h"
|
|
|
|
extern char *f__r_mode[], *f__w_mode[];
|
|
|
|
integer f_end(alist *a)
|
|
{
|
|
unit *b;
|
|
FILE *tf;
|
|
|
|
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",a->aunit);
|
|
if (tf = fopen(nbuf, f__w_mode[0]))
|
|
fclose(tf);
|
|
return(0);
|
|
}
|
|
b->uend=1;
|
|
return(b->useek ? t_runc(a) : 0);
|
|
}
|
|
|
|
static int copy(FILE *from, long len, FILE *to)
|
|
{
|
|
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;
|
|
}
|
|
|
|
int t_runc(alist *a)
|
|
{
|
|
long loc, len;
|
|
unit *b;
|
|
FILE *bf, *tf;
|
|
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);
|
|
fclose(b->ufd);
|
|
if (!loc) {
|
|
if (!(bf = fopen(b->ufnm, f__w_mode[b->ufmt])))
|
|
rc = 1;
|
|
if (b->uwrt)
|
|
b->uwrt = 1;
|
|
goto done;
|
|
}
|
|
if (!(bf = fopen(b->ufnm, f__r_mode[0]))
|
|
|| !(tf = tmpfile())) {
|
|
#ifdef NON_UNIX_STDIO
|
|
bad:
|
|
#endif
|
|
rc = 1;
|
|
goto done;
|
|
}
|
|
if (copy(bf, loc, tf)) {
|
|
bad1:
|
|
rc = 1;
|
|
goto done1;
|
|
}
|
|
if (!(bf = freopen(b->ufnm, f__w_mode[0], bf)))
|
|
goto bad1;
|
|
rewind(tf);
|
|
if (copy(tf, loc, bf))
|
|
goto bad1;
|
|
b->urw = 2;
|
|
#ifdef NON_UNIX_STDIO
|
|
if (b->ufmt) {
|
|
fclose(bf);
|
|
if (!(bf = fopen(b->ufnm, f__w_mode[3])))
|
|
goto bad;
|
|
fseek(bf,0L,SEEK_END);
|
|
b->urw = 3;
|
|
}
|
|
#endif
|
|
done1:
|
|
fclose(tf);
|
|
done:
|
|
f__cf = b->ufd = bf;
|
|
if (rc)
|
|
err(a->aerr,111,"endfile");
|
|
return 0;
|
|
}
|