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21026f495b
2002-07-10 Toon Moene <toon@moene.indiv.nluug.nl> * libI77/open.c (f_open): Do not indicate unformatted file if record length is given without a FORMATTED/UNFORMATTED specification. From-SVN: r55380
299 lines
6.2 KiB
C
299 lines
6.2 KiB
C
#include "config.h"
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#include "f2c.h"
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#include "fio.h"
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#include <string.h>
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#ifndef NON_POSIX_STDIO
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#ifdef MSDOS
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#include "io.h"
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#else
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#include "unistd.h" /* for access */
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#endif
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#endif
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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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extern int f__canseek (FILE *);
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extern integer f_clos (cllist *);
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#ifdef NON_ANSI_RW_MODES
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char *f__r_mode[2] = { "r", "r" };
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char *f__w_mode[4] = { "w", "w", "r+w", "r+w" };
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#else
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char *f__r_mode[2] = { "rb", "r" };
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char *f__w_mode[4] = { "wb", "w", "r+b", "r+" };
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#endif
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static char f__buf0[400], *f__buf = f__buf0;
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int f__buflen = (int) sizeof (f__buf0);
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static void
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f__bufadj (int n, int c)
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{
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unsigned int len;
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char *nbuf, *s, *t, *te;
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if (f__buf == f__buf0)
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f__buflen = 1024;
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while (f__buflen <= n)
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f__buflen <<= 1;
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len = (unsigned int) f__buflen;
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if (len != f__buflen || !(nbuf = (char *) malloc (len)))
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f__fatal (113, "malloc failure");
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s = nbuf;
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t = f__buf;
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te = t + c;
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while (t < te)
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*s++ = *t++;
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if (f__buf != f__buf0)
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free (f__buf);
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f__buf = nbuf;
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}
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int
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f__putbuf (int c)
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{
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char *s, *se;
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int n;
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if (f__hiwater > f__recpos)
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f__recpos = f__hiwater;
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n = f__recpos + 1;
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if (n >= f__buflen)
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f__bufadj (n, f__recpos);
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s = f__buf;
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se = s + f__recpos;
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if (c)
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*se++ = c;
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*se = 0;
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for (;;)
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{
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fputs (s, f__cf);
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s += strlen (s);
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if (s >= se)
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break; /* normally happens the first time */
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putc (*s++, f__cf);
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}
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return 0;
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}
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void
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x_putc (int c)
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{
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if (f__recpos >= f__buflen)
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f__bufadj (f__recpos, f__buflen);
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f__buf[f__recpos++] = c;
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}
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#define opnerr(f,m,s) \
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do {if(f) {f__init &= ~2; errno= m;} else opn_err(m,s,a); return(m);} while(0)
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static void
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opn_err (int m, char *s, olist * a)
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{
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if (a->ofnm)
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{
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/* supply file name to error message */
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if (a->ofnmlen >= f__buflen)
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f__bufadj ((int) a->ofnmlen, 0);
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g_char (a->ofnm, a->ofnmlen, f__curunit->ufnm = f__buf);
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}
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f__fatal (m, s);
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}
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integer
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f_open (olist * a)
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{
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unit *b;
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integer rv;
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char buf[256], *s, *env;
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cllist x;
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int ufmt;
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FILE *tf;
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int fd, len;
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#ifndef NON_UNIX_STDIO
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int n;
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#endif
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if (f__init != 1)
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f_init ();
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f__external = 1;
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if (a->ounit >= MXUNIT || a->ounit < 0)
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err (a->oerr, 101, "open");
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f__curunit = b = &f__units[a->ounit];
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if (b->ufd)
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{
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if (a->ofnm == 0)
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{
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same:if (a->oblnk)
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b->ublnk = *a->oblnk == 'z' || *a->oblnk == 'Z';
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return (0);
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}
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#ifdef NON_UNIX_STDIO
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if (b->ufnm
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&& strlen (b->ufnm) == a->ofnmlen
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&& !strncmp (b->ufnm, a->ofnm, (unsigned) a->ofnmlen))
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goto same;
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#else
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g_char (a->ofnm, a->ofnmlen, buf);
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if (f__inode (buf, &n) == b->uinode && n == b->udev)
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goto same;
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#endif
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x.cunit = a->ounit;
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x.csta = 0;
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x.cerr = a->oerr;
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if ((rv = f_clos (&x)) != 0)
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return rv;
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}
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b->url = (int) a->orl;
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b->ublnk = a->oblnk && (*a->oblnk == 'z' || *a->oblnk == 'Z');
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if (a->ofm == 0)
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b->ufmt = 1;
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else if (*a->ofm == 'f' || *a->ofm == 'F')
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b->ufmt = 1;
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else
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b->ufmt = 0;
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ufmt = b->ufmt;
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#ifdef url_Adjust
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if (b->url && !ufmt)
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url_Adjust (b->url);
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#endif
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if (a->ofnm)
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{
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g_char (a->ofnm, a->ofnmlen, buf);
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if (!buf[0])
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opnerr (a->oerr, 107, "open");
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}
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else
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sprintf (buf, "fort.%ld", (long) a->ounit);
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b->uscrtch = 0;
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b->uend = 0;
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b->uwrt = 0;
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b->ufd = 0;
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b->urw = 3;
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switch (a->osta ? *a->osta : 'u')
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{
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case 'o':
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case 'O':
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#ifdef NON_POSIX_STDIO
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if (!(tf = fopen (buf, "r")))
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opnerr (a->oerr, errno, "open");
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fclose (tf);
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#else
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if (access (buf, 0))
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opnerr (a->oerr, errno, "open");
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#endif
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break;
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case 's':
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case 'S':
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b->uscrtch = 1;
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#ifdef HAVE_MKSTEMP /* Allow use of TMPDIR preferentially. */
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env = getenv ("TMPDIR");
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if (!env)
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env = getenv ("TEMP");
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if (!env)
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env = "/tmp";
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len = strlen (env);
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if (len > 256 - (int) sizeof ("/tmp.FXXXXXX"))
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err (a->oerr, 132, "open");
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strcpy (buf, env);
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strcat (buf, "/tmp.FXXXXXX");
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fd = mkstemp (buf);
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if (fd == -1 || close (fd))
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err (a->oerr, 132, "open");
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#else /* ! defined (HAVE_MKSTEMP) */
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#ifdef HAVE_TEMPNAM /* Allow use of TMPDIR preferentially. */
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s = tempnam (0, buf);
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if (strlen (s) >= sizeof (buf))
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err (a->oerr, 132, "open");
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(void) strcpy (buf, s);
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free (s);
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#else /* ! defined (HAVE_TEMPNAM) */
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#ifdef HAVE_TMPNAM
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tmpnam (buf);
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#else
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(void) strcpy (buf, "tmp.FXXXXXX");
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(void) mktemp (buf);
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#endif
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#endif /* ! defined (HAVE_TEMPNAM) */
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#endif /* ! defined (HAVE_MKSTEMP) */
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goto replace;
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case 'n':
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case 'N':
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#ifdef NON_POSIX_STDIO
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if ((tf = fopen (buf, "r")) || (tf = fopen (buf, "a")))
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{
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fclose (tf);
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opnerr (a->oerr, 128, "open");
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}
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#else
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if (!access (buf, 0))
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opnerr (a->oerr, 128, "open");
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#endif
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/* no break */
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case 'r': /* Fortran 90 replace option */
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case 'R':
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replace:
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if ((tf = fopen (buf, f__w_mode[0])))
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fclose (tf);
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}
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b->ufnm = (char *) malloc ((unsigned int) (strlen (buf) + 1));
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if (b->ufnm == NULL)
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opnerr (a->oerr, 113, "no space");
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(void) strcpy (b->ufnm, buf);
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if ((s = a->oacc) && b->url)
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ufmt = 0;
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if (!(tf = fopen (buf, f__w_mode[ufmt | 2])))
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{
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if ((tf = fopen (buf, f__r_mode[ufmt])))
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b->urw = 1;
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else if ((tf = fopen (buf, f__w_mode[ufmt])))
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{
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b->uwrt = 1;
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b->urw = 2;
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}
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else
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err (a->oerr, errno, "open");
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}
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b->useek = f__canseek (b->ufd = tf);
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#ifndef NON_UNIX_STDIO
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if ((b->uinode = f__inode (buf, &b->udev)) == -1)
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opnerr (a->oerr, 108, "open");
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#endif
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if (b->useek)
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{
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if (a->orl)
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FSEEK (b->ufd, 0, SEEK_SET);
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else if ((s = a->oacc) && (*s == 'a' || *s == 'A')
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&& FSEEK (b->ufd, 0, SEEK_END))
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opnerr (a->oerr, 129, "open");
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}
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return (0);
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}
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int
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fk_open (int seq, int fmt, ftnint n)
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{
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char nbuf[10];
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olist a;
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int rtn;
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int save_init;
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(void) sprintf (nbuf, "fort.%ld", (long) n);
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a.oerr = 1;
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a.ounit = n;
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a.ofnm = nbuf;
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a.ofnmlen = strlen (nbuf);
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a.osta = NULL;
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a.oacc = seq == SEQ ? "s" : "d";
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a.ofm = fmt == FMT ? "f" : "u";
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a.orl = seq == DIR ? 1 : 0;
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a.oblnk = NULL;
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save_init = f__init;
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f__init &= ~2;
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rtn = f_open (&a);
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f__init = save_init | 1;
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return rtn;
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}
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