129 lines
3.0 KiB
C
129 lines
3.0 KiB
C
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/* exclude.c -- exclude file names
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Copyright 1992, 1993, 1994, 1997, 1999, 2000 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING.
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If not, write to the Free Software Foundation,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* Written by Paul Eggert <eggert@twinsun.com> */
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <errno.h>
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#ifndef errno
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extern int errno;
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#endif
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#include <exclude.h>
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#include <fnmatch.h>
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#include <stdio.h>
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#include <sys/types.h>
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void *xmalloc PARAMS ((size_t));
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void *xrealloc PARAMS ((void *, size_t));
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/* Keep track of excluded file name patterns. */
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struct exclude
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{
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char const **exclude;
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int exclude_alloc;
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int exclude_count;
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};
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struct exclude *
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new_exclude (void)
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{
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struct exclude *ex = (struct exclude *) xmalloc (sizeof (struct exclude));
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ex->exclude_count = 0;
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ex->exclude_alloc = 64;
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ex->exclude = (char const **) xmalloc (ex->exclude_alloc * sizeof (char *));
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return ex;
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}
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int
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excluded_filename (struct exclude const *ex, char const *f, int options)
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{
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char const * const *exclude = ex->exclude;
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int exclude_count = ex->exclude_count;
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int i;
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for (i = 0; i < exclude_count; i++)
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if (fnmatch (exclude[i], f, options) == 0)
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return 1;
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return 0;
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}
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void
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add_exclude (struct exclude *ex, char const *pattern)
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{
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if (ex->exclude_alloc <= ex->exclude_count)
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ex->exclude = (char const **) xrealloc (ex->exclude,
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((ex->exclude_alloc *= 2)
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* sizeof (char *)));
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ex->exclude[ex->exclude_count++] = pattern;
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}
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int
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add_exclude_file (void (*add_func) PARAMS ((struct exclude *, char const *)),
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struct exclude *ex, char const *filename, char line_end)
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{
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int use_stdin = filename[0] == '-' && !filename[1];
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FILE *in;
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char *buf;
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char *p;
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char const *pattern;
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char const *lim;
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size_t buf_alloc = 1024;
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size_t buf_count = 0;
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int c;
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int e = 0;
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if (use_stdin)
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in = stdin;
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else if (! (in = fopen (filename, "r")))
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return -1;
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buf = xmalloc (buf_alloc);
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while ((c = getc (in)) != EOF)
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{
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buf[buf_count++] = c;
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if (buf_count == buf_alloc)
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buf = xrealloc (buf, buf_alloc *= 2);
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}
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buf = xrealloc (buf, buf_count + 1);
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if (ferror (in))
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e = errno;
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if (!use_stdin && fclose (in) != 0)
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e = errno;
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for (pattern = p = buf, lim = buf + buf_count; p <= lim; p++)
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if (p < lim ? *p == line_end : buf < p && p[-1])
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{
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*p = '\0';
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(*add_func) (ex, pattern);
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pattern = p + 1;
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}
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errno = e;
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return e ? -1 : 0;
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}
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