/* exclude.c -- exclude file names
- Copyright 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
+
+ Copyright (C) 1992, 1993, 1994, 1997, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005, 2006 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING.
If not, write to the Free Software Foundation,
- 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* Written by Paul Eggert <eggert@twinsun.com> */
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
+
+#include <stdbool.h>
+#include <ctype.h>
#include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
-#include <exclude.h>
-#include <fnmatch.h>
+#include <stddef.h>
#include <stdio.h>
-#include <sys/types.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "exclude.h"
+#include "fnmatch.h"
+#include "strcase.h"
+#include "xalloc.h"
+#include "verify.h"
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
+
+/* Non-GNU systems lack these options, so we don't need to check them. */
+#ifndef FNM_CASEFOLD
+# define FNM_CASEFOLD 0
+#endif
+#ifndef FNM_LEADING_DIR
+# define FNM_LEADING_DIR 0
+#endif
-void *xmalloc __EXCLUDE_P ((size_t));
-void *xrealloc __EXCLUDE_P ((void *, size_t));
+verify (((EXCLUDE_ANCHORED | EXCLUDE_INCLUDE | EXCLUDE_WILDCARDS)
+ & (FNM_PATHNAME | FNM_NOESCAPE | FNM_PERIOD | FNM_LEADING_DIR
+ | FNM_CASEFOLD))
+ == 0);
-/* Keep track of excluded file name patterns. */
+/* An exclude pattern-options pair. The options are fnmatch options
+ ORed with EXCLUDE_* options. */
+
+struct patopts
+ {
+ char const *pattern;
+ int options;
+ };
+
+/* An exclude list, of pattern-options pairs. */
struct exclude
{
- char const **exclude;
- int exclude_alloc;
- int exclude_count;
+ struct patopts *exclude;
+ size_t exclude_alloc;
+ size_t exclude_count;
};
+/* Return a newly allocated and empty exclude list. */
+
struct exclude *
new_exclude (void)
{
- struct exclude *ex = (struct exclude *) xmalloc (sizeof (struct exclude));
- ex->exclude_count = 0;
- ex->exclude_alloc = 64;
- ex->exclude = (char const **) xmalloc (ex->exclude_alloc * sizeof (char *));
- return ex;
+ return xzalloc (sizeof *new_exclude ());
}
-int
-excluded_filename (struct exclude const *ex, char const *f)
+/* Free the storage associated with an exclude list. */
+
+void
+free_exclude (struct exclude *ex)
{
- char const * const *exclude = ex->exclude;
- int exclude_count = ex->exclude_count;
- int i;
+ free (ex->exclude);
+ free (ex);
+}
- for (i = 0; i < exclude_count; i++)
- if (fnmatch (exclude[i], f, 0) == 0)
- return 1;
+/* Return zero if PATTERN matches F, obeying OPTIONS, except that
+ (unlike fnmatch) wildcards are disabled in PATTERN. */
- return 0;
+static int
+fnmatch_no_wildcards (char const *pattern, char const *f, int options)
+{
+ if (! (options & FNM_LEADING_DIR))
+ return ((options & FNM_CASEFOLD)
+ ? strcasecmp (pattern, f)
+ : strcmp (pattern, f));
+ else
+ {
+ size_t patlen = strlen (pattern);
+ int r = ((options & FNM_CASEFOLD)
+ ? strncasecmp (pattern, f, patlen)
+ : strncmp (pattern, f, patlen));
+ if (! r)
+ {
+ r = f[patlen];
+ if (r == '/')
+ r = 0;
+ }
+ return r;
+ }
}
+bool
+exclude_fnmatch (char const *pattern, char const *f, int options)
+{
+ int (*matcher) (char const *, char const *, int) =
+ (options & EXCLUDE_WILDCARDS
+ ? fnmatch
+ : fnmatch_no_wildcards);
+ bool matched = ((*matcher) (pattern, f, options) == 0);
+ char const *p;
+
+ if (! (options & EXCLUDE_ANCHORED))
+ for (p = f; *p && ! matched; p++)
+ if (*p == '/' && p[1] != '/')
+ matched = ((*matcher) (pattern, p + 1, options) == 0);
+
+ return matched;
+}
+
+/* Return true if EX excludes F. */
+
+bool
+excluded_file_name (struct exclude const *ex, char const *f)
+{
+ size_t exclude_count = ex->exclude_count;
+
+ /* If no options are given, the default is to include. */
+ if (exclude_count == 0)
+ return false;
+ else
+ {
+ struct patopts const *exclude = ex->exclude;
+ size_t i;
+
+ /* Otherwise, the default is the opposite of the first option. */
+ bool excluded = !! (exclude[0].options & EXCLUDE_INCLUDE);
+
+ /* Scan through the options, seeing whether they change F from
+ excluded to included or vice versa. */
+ for (i = 0; i < exclude_count; i++)
+ {
+ char const *pattern = exclude[i].pattern;
+ int options = exclude[i].options;
+ if (excluded == !! (options & EXCLUDE_INCLUDE))
+ excluded ^= exclude_fnmatch (pattern, f, options);
+ }
+
+ return excluded;
+ }
+}
+
+/* Append to EX the exclusion PATTERN with OPTIONS. */
+
void
-add_exclude (struct exclude *ex, char const *pattern)
+add_exclude (struct exclude *ex, char const *pattern, int options)
{
- if (ex->exclude_alloc <= ex->exclude_count)
- ex->exclude = (char const **) xrealloc (ex->exclude,
- ((ex->exclude_alloc *= 2)
- * sizeof (char *)));
+ struct patopts *patopts;
+
+ if (ex->exclude_count == ex->exclude_alloc)
+ ex->exclude = x2nrealloc (ex->exclude, &ex->exclude_alloc,
+ sizeof *ex->exclude);
- ex->exclude[ex->exclude_count++] = pattern;
+ patopts = &ex->exclude[ex->exclude_count++];
+ patopts->pattern = pattern;
+ patopts->options = options;
}
+/* Use ADD_FUNC to append to EX the patterns in FILE_NAME, each with
+ OPTIONS. LINE_END terminates each pattern in the file. If
+ LINE_END is a space character, ignore trailing spaces and empty
+ lines in FILE. Return -1 on failure, 0 on success. */
+
int
-add_exclude_file (struct exclude *ex, char const *filename, char line_end)
+add_exclude_file (void (*add_func) (struct exclude *, char const *, int),
+ struct exclude *ex, char const *file_name, int options,
+ char line_end)
{
- int use_stdin = filename[0] == '-' && !filename[1];
+ bool use_stdin = file_name[0] == '-' && !file_name[1];
FILE *in;
- char *buf;
+ char *buf = NULL;
char *p;
char const *pattern;
char const *lim;
- size_t buf_alloc = 1024;
+ size_t buf_alloc = 0;
size_t buf_count = 0;
int c;
int e = 0;
if (use_stdin)
in = stdin;
- else if (! (in = fopen (filename, "r")))
+ else if (! (in = fopen (file_name, "r")))
return -1;
- buf = xmalloc (buf_alloc);
-
while ((c = getc (in)) != EOF)
{
- buf[buf_count++] = c;
if (buf_count == buf_alloc)
- buf = xrealloc (buf, buf_alloc *= 2);
+ buf = x2realloc (buf, &buf_alloc);
+ buf[buf_count++] = c;
}
- buf = xrealloc (buf, buf_count + 1);
-
if (ferror (in))
e = errno;
if (!use_stdin && fclose (in) != 0)
e = errno;
- for (pattern = p = buf, lim = buf + buf_count; p <= lim; p++)
- if (p < lim ? *p == line_end : buf < p && p[-1])
+ buf = xrealloc (buf, buf_count + 1);
+ buf[buf_count] = line_end;
+ lim = buf + buf_count + ! (buf_count == 0 || buf[buf_count - 1] == line_end);
+ pattern = buf;
+
+ for (p = buf; p < lim; p++)
+ if (*p == line_end)
{
- *p = '\0';
- add_exclude (ex, pattern);
+ char *pattern_end = p;
+
+ if (isspace ((unsigned char) line_end))
+ {
+ for (; ; pattern_end--)
+ if (pattern_end == pattern)
+ goto next_pattern;
+ else if (! isspace ((unsigned char) pattern_end[-1]))
+ break;
+ }
+
+ *pattern_end = '\0';
+ (*add_func) (ex, pattern, options);
+
+ next_pattern:
pattern = p + 1;
}
projects / gnulib.git / blobdiff