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