e403d80d35
* libI77/dfe.c (s_rdfe, s_wdfe): Wrap parentheses around assignment used as truth value. * libI77/due.c (s_rdue, s_wdue): Likewise. * libI77/endfile.c (f_end): Likewise. * libI77/iio.c (s_rsfi, s_wsfi): Likewise. * libI77/lread.c (ERR, l_C, nmL_getc, s_rsle): Likewise. * libI77/lwrite.c (l_g, l_put): Likewise. * libI77/open.c (f_open): Likewise. * libI77/rdfmt.c (rd_Z): Likewise. * libI77/rsfe.c (s_rsfe): Likewise. * libI77/rsne.c (hash, mk_hashtab, nl_init, getname, getdimen, x_rsne, s_rsne): Likewise. * libI77/sue.c (s_rsue, s_wsue): Likewise. * libI77/wref.c (wrt_E, wrt_F): Likewise. * libI77/wsfe.c (s_wsfe): Likewise. * libI77/wsle.c (s_wsle): Likewise. * libI77/wsne.c (s_wsne): Likewise. From-SVN: r54172
131 lines
2.4 KiB
C
131 lines
2.4 KiB
C
#include "config.h"
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#include "f2c.h"
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#include "fio.h"
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#include <sys/types.h>
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#include <unistd.h>
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#undef abs
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#undef min
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#undef max
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#include <stdlib.h>
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#include <string.h>
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extern char *f__r_mode[], *f__w_mode[];
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integer
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f_end (alist * a)
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{
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unit *b;
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FILE *tf;
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if (f__init & 2)
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f__fatal (131, "I/O recursion");
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if (a->aunit >= MXUNIT || a->aunit < 0)
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err (a->aerr, 101, "endfile");
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b = &f__units[a->aunit];
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if (b->ufd == NULL)
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{
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char nbuf[10];
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sprintf (nbuf, "fort.%ld", (long) a->aunit);
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if ((tf = fopen (nbuf, f__w_mode[0])))
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fclose (tf);
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return (0);
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}
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b->uend = 1;
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return (b->useek ? t_runc (a) : 0);
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}
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#ifndef HAVE_FTRUNCATE
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static int
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copy (FILE * from, register long len, FILE * to)
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{
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int len1;
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char buf[BUFSIZ];
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while (fread (buf, len1 = len > BUFSIZ ? BUFSIZ : (int) len, 1, from))
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{
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if (!fwrite (buf, len1, 1, to))
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return 1;
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if ((len -= len1) <= 0)
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break;
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}
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return 0;
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}
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#endif /* !defined(HAVE_FTRUNCATE) */
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int
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t_runc (alist * a)
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{
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off_t loc, len;
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unit *b;
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int rc;
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FILE *bf;
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#ifndef HAVE_FTRUNCATE
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FILE *tf;
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#endif /* !defined(HAVE_FTRUNCATE) */
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b = &f__units[a->aunit];
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if (b->url)
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return (0); /*don't truncate direct files */
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loc = FTELL (bf = b->ufd);
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FSEEK (bf, 0, SEEK_END);
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len = FTELL (bf);
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if (loc >= len || b->useek == 0 || b->ufnm == NULL)
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return (0);
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#ifndef HAVE_FTRUNCATE
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rc = 0;
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fclose (b->ufd);
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if (!loc)
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{
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if (!(bf = fopen (b->ufnm, f__w_mode[b->ufmt])))
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rc = 1;
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if (b->uwrt)
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b->uwrt = 1;
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goto done;
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}
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if (!(bf = fopen (b->ufnm, f__r_mode[0])) || !(tf = tmpfile ()))
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{
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#ifdef NON_UNIX_STDIO
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bad:
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#endif
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rc = 1;
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goto done;
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}
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if (copy (bf, loc, tf))
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{
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bad1:
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rc = 1;
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goto done1;
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}
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if (!(bf = freopen (b->ufnm, f__w_mode[0], bf)))
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goto bad1;
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FSEEK (tf, 0, SEEK_SET);
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if (copy (tf, loc, bf))
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goto bad1;
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b->uwrt = 1;
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b->urw = 2;
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#ifdef NON_UNIX_STDIO
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if (b->ufmt)
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{
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fclose (bf);
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if (!(bf = fopen (b->ufnm, f__w_mode[3])))
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goto bad;
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FSEEK (bf, 0, SEEK_END);
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b->urw = 3;
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}
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#endif
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done1:
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fclose (tf);
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done:
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f__cf = b->ufd = bf;
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#else /* !defined(HAVE_FTRUNCATE) */
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fflush (b->ufd);
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rc = ftruncate (fileno (b->ufd), loc);
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FSEEK (bf, loc, SEEK_SET);
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#endif /* !defined(HAVE_FTRUNCATE) */
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if (rc)
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err (a->aerr, 111, "endfile");
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return 0;
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}
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