xref: /freebsd/usr.bin/grep/grep.h (revision 6f9c8e5b074419423648ffb89b83fd2f257e90b7)
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  * Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
7  * Copyright (c) 2008-2009 Gabor Kovesdan <gabor@FreeBSD.org>
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #include <bzlib.h>
33 #include <limits.h>
34 #include <regex.h>
35 #include <stdbool.h>
36 #include <stdio.h>
37 #include <zlib.h>
38 
39 #ifdef WITHOUT_NLS
40 #define getstr(n)	 errstr[n]
41 #else
42 #include <nl_types.h>
43 
44 extern nl_catd		 catalog;
45 #define getstr(n)	 catgets(catalog, 1, n, errstr[n])
46 #endif
47 
48 extern const char		*errstr[];
49 
50 #define VERSION		"2.5.1-FreeBSD"
51 
52 #define GREP_FIXED	0
53 #define GREP_BASIC	1
54 #define GREP_EXTENDED	2
55 
56 #define BINFILE_BIN	0
57 #define BINFILE_SKIP	1
58 #define BINFILE_TEXT	2
59 
60 #define FILE_STDIO	0
61 #define FILE_GZIP	1
62 #define FILE_BZIP	2
63 
64 #define DIR_READ	0
65 #define DIR_SKIP	1
66 #define DIR_RECURSE	2
67 
68 #define DEV_READ	0
69 #define DEV_SKIP	1
70 
71 #define LINK_READ	0
72 #define LINK_EXPLICIT	1
73 #define LINK_SKIP	2
74 
75 #define EXCL_PAT	0
76 #define INCL_PAT	1
77 
78 #define MAX_LINE_MATCHES	32
79 
80 struct file {
81 	int		 fd;
82 	bool		 binary;
83 };
84 
85 struct str {
86 	off_t		 off;
87 	size_t		 len;
88 	char		*dat;
89 	char		*file;
90 	int		 line_no;
91 };
92 
93 struct epat {
94 	char		*pat;
95 	int		 mode;
96 };
97 
98 typedef struct {
99 	size_t		 len;
100 	unsigned char	*pattern;
101 	int		 qsBc[UCHAR_MAX + 1];
102 	/* flags */
103 	bool		 bol;
104 	bool		 eol;
105 	bool		 reversed;
106 	bool		 word;
107 } fastgrep_t;
108 
109 /* Flags passed to regcomp() and regexec() */
110 extern int	 cflags, eflags;
111 
112 /* Command line flags */
113 extern bool	 Eflag, Fflag, Gflag, Hflag, Lflag,
114 		 bflag, cflag, hflag, iflag, lflag, mflag, nflag, oflag,
115 		 qflag, sflag, vflag, wflag, xflag;
116 extern bool	 dexclude, dinclude, fexclude, finclude, lbflag, nullflag;
117 extern unsigned long long Aflag, Bflag, mcount;
118 extern char	*label;
119 extern const char *color;
120 extern int	 binbehave, devbehave, dirbehave, filebehave, grepbehave, linkbehave;
121 
122 extern bool	 first, matchall, notfound, prev;
123 extern int	 tail;
124 extern unsigned int dpatterns, fpatterns, patterns;
125 extern char    **pattern;
126 extern struct epat *dpattern, *fpattern;
127 extern regex_t	*er_pattern, *r_pattern;
128 extern fastgrep_t *fg_pattern;
129 
130 /* For regex errors  */
131 #define RE_ERROR_BUF	512
132 extern char	 re_error[RE_ERROR_BUF + 1];	/* Seems big enough */
133 
134 /* util.c */
135 bool	 file_matching(const char *fname);
136 int	 procfile(const char *fn);
137 int	 grep_tree(char **argv);
138 void	*grep_malloc(size_t size);
139 void	*grep_calloc(size_t nmemb, size_t size);
140 void	*grep_realloc(void *ptr, size_t size);
141 char	*grep_strdup(const char *str);
142 void	 printline(struct str *line, int sep, regmatch_t *matches, int m);
143 
144 /* queue.c */
145 void	 enqueue(struct str *x);
146 void	 printqueue(void);
147 void	 clearqueue(void);
148 
149 /* file.c */
150 void		 grep_close(struct file *f);
151 struct file	*grep_open(const char *path);
152 char		*grep_fgetln(struct file *f, size_t *len);
153 
154 /* fastgrep.c */
155 int		 fastcomp(fastgrep_t *, const char *);
156 void		 fgrepcomp(fastgrep_t *, const char *);
157 int		 grep_search(fastgrep_t *, const unsigned char *, size_t, regmatch_t *);
158