view lib/exclude.h @ 17614:ab0ca58c72b1

exclude: add support for posix regexps This commit adds support for POSIX extended regular expressions and fixes a long-standing memory leak (pattern buffer was never freed). It also implements a new interface function to read exclude patterns from a FILE, which passes an additional parameter to its callback function, thereby allowing to preserve its state between invocations. * lib/exclude.c (struct patopts): Pack regex and pattern into union. (pattern_buffer): New struct. (exclude): New member patbuf. (exclude_add_pattern_buffer): New function. (free_exclude_segment): Free regexps. (free_exclude): Free allocated pattern buffers. (exclude_patopts): New function. (file_pattern_matches): Use exclude_patopts. (add_exclude): support regexps. (add_exclude_fp): New function. (add_exclude_file): Rewrite using add_exclude_fp. (fnmatch_pattern_has_wildcards): Support posix extended regexps. * lib/exclude.h (EXCLUDE_REGEX, EXCLUDE_ALLOC): New flags. (add_exclude_fp) (exclude_add_pattern_buffer): New prototypes. * modules/exclude: Depends on regex and filename.
author Sergey Poznyakoff <gray@gnu.org.ua>
date Sat, 15 Feb 2014 19:21:04 +0200
parents 344018b6e5d7
children ab58d4870664
line wrap: on
line source

/* exclude.h -- declarations for excluding file names

   Copyright (C) 1992-1994, 1997, 1999, 2001-2003, 2005-2006, 2009-2014 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
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifndef _GL_EXCLUDE_H
#define _GL_EXCLUDE_H 1

#include <stdbool.h>
#include <stdio.h>

/* Written by Paul Eggert <eggert@twinsun.com>
   and Sergey Poznyakoff <gray@gnu.org> */

/* Exclude options, which can be ORed with fnmatch options.  */

/* Patterns must match the start of file names, instead of matching
   anywhere after a '/'.  */
#define EXCLUDE_ANCHORED (1 << 30)

/* Include instead of exclude.  */
#define EXCLUDE_INCLUDE (1 << 29)

/* '?', '*', '[', and '\\' are special in patterns.  Without this
   option, these characters are ordinary and fnmatch is not used.  */
#define EXCLUDE_WILDCARDS (1 << 28)

/* Patterns are POSIX extended regular expressions */
#define EXCLUDE_REGEX     (1 << 27)

/* Allocate storage for the pattern */
#define EXCLUDE_ALLOC     (1 << 26)

struct exclude;

bool fnmatch_pattern_has_wildcards (const char *, int) _GL_ATTRIBUTE_PURE;

struct exclude *new_exclude (void);
void free_exclude (struct exclude *);
void add_exclude (struct exclude *, char const *, int);
int add_exclude_file (void (*) (struct exclude *, char const *, int),
                      struct exclude *, char const *, int, char);
int add_exclude_fp (void (*) (struct exclude *, char const *, int, void *),
		    struct exclude *, FILE *, int, char, void *);
bool excluded_file_name (struct exclude const *, char const *);
void exclude_add_pattern_buffer (struct exclude *ex, char *buf);
bool exclude_fnmatch (char const *, char const *, int);

#endif /* _GL_EXCLUDE_H */