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grep.h revision 1.6 
      1 /*	$NetBSD: grep.h,v 1.6 2011/04/18 17:18:04 joerg Exp $	*/
      2 /*	$OpenBSD: grep.h,v 1.15 2010/04/05 03:03:55 tedu Exp $	*/
      3 /*	$FreeBSD: head/usr.bin/grep/grep.h 211496 2010-08-19 09:28:59Z des $	*/
      4 
      5 /*-
      6  * Copyright (c) 1999 James Howard and Dag-Erling Codan Smrgrav
      7  * Copyright (c) 2008-2009 Gabor Kovesdan <gabor (at) 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	 matchall, notfound;
    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