1/*	$NetBSD: grep.h,v 1.5 2011/02/27 17:33:37 joerg Exp $	*/
2/*	$OpenBSD: grep.h,v 1.15 2010/04/05 03:03:55 tedu Exp $	*/
3/*	$FreeBSD$	*/
4
5/*-
6 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
7 *
8 * Copyright (c) 1999 James Howard and Dag-Erling Co��dan Sm��rgrav
9 * Copyright (c) 2008-2009 Gabor Kovesdan <gabor@FreeBSD.org>
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include <bzlib.h>
35#include <limits.h>
36#include <regex.h>
37#include <stdbool.h>
38#include <stdio.h>
39#include <zlib.h>
40
41extern const char		*errstr[];
42
43#define	VERSION		"2.6.0-FreeBSD"
44
45#define	GREP_FIXED	0
46#define	GREP_BASIC	1
47#define	GREP_EXTENDED	2
48
49#if !defined(REG_NOSPEC) && !defined(REG_LITERAL)
50#define WITH_INTERNAL_NOSPEC
51#endif
52
53#define	BINFILE_BIN	0
54#define	BINFILE_SKIP	1
55#define	BINFILE_TEXT	2
56
57#define	FILE_STDIO	0
58#define	FILE_MMAP	1
59
60#define	DIR_READ	0
61#define	DIR_SKIP	1
62#define	DIR_RECURSE	2
63
64#define	DEV_READ	0
65#define	DEV_SKIP	1
66
67#define	LINK_READ	0
68#define	LINK_EXPLICIT	1
69#define	LINK_SKIP	2
70
71#define	EXCL_PAT	0
72#define	INCL_PAT	1
73
74#define	MAX_MATCHES	32
75
76struct file {
77	int		 fd;
78	bool		 binary;
79};
80
81struct str {
82	off_t		 boff;
83	off_t		 off;
84	size_t		 len;
85	char		*dat;
86	char		*file;
87	int		 line_no;
88};
89
90struct pat {
91	char		*pat;
92	int		 len;
93};
94
95struct epat {
96	char		*pat;
97	int		 mode;
98};
99
100/*
101 * Parsing context; used to hold things like matches made and
102 * other useful bits
103 */
104struct parsec {
105	regmatch_t	matches[MAX_MATCHES];		/* Matches made */
106	/* XXX TODO: This should be a chunk, not a line */
107	struct str	ln;				/* Current line */
108	size_t		lnstart;			/* Position in line */
109	size_t		matchidx;			/* Latest match index */
110	int		printed;			/* Metadata printed? */
111	bool		binary;				/* Binary file? */
112	bool		cntlines;			/* Count lines? */
113};
114
115/* Flags passed to regcomp() and regexec() */
116extern int	 cflags, eflags;
117
118/* Command line flags */
119extern bool	 Eflag, Fflag, Gflag, Hflag, Lflag,
120		 bflag, cflag, hflag, iflag, lflag, mflag, nflag, oflag,
121		 qflag, sflag, vflag, wflag, xflag;
122extern bool	 dexclude, dinclude, fexclude, finclude, lbflag, nullflag;
123extern long long Aflag, Bflag;
124extern long long mcount;
125extern long long mlimit;
126extern char	 fileeol;
127extern char	*label;
128extern const char *color;
129extern int	 binbehave, devbehave, dirbehave, filebehave, grepbehave, linkbehave;
130
131extern bool	 file_err, matchall;
132extern unsigned int dpatterns, fpatterns, patterns;
133extern struct pat *pattern;
134extern struct epat *dpattern, *fpattern;
135extern regex_t	*er_pattern, *r_pattern;
136
137/* For regex errors  */
138#define	RE_ERROR_BUF	512
139extern char	 re_error[RE_ERROR_BUF + 1];	/* Seems big enough */
140
141/* util.c */
142bool	 file_matching(const char *fname);
143bool	 procfile(const char *fn);
144bool	 grep_tree(char **argv);
145void	*grep_malloc(size_t size);
146void	*grep_calloc(size_t nmemb, size_t size);
147void	*grep_realloc(void *ptr, size_t size);
148char	*grep_strdup(const char *str);
149void	 grep_printline(struct str *line, int sep);
150
151/* queue.c */
152void	 initqueue(void);
153bool	 enqueue(struct str *x);
154void	 printqueue(void);
155void	 clearqueue(void);
156
157/* file.c */
158void		 grep_close(struct file *f);
159struct file	*grep_open(const char *path);
160char		*grep_fgetln(struct file *f, struct parsec *pc);
161