usr.bin/grep/grep.h

   1 /*      $NetBSD: grep.h,v 1.2 2004/05/05 15:06:33 cjep Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/types.h>
  30
  31 #include <regex.h>
  32 #include <stdio.h>
  33 #include <zlib.h>
  34
  35 #define VERSION "20040505"
  36
  37 #define GREP_READ       0
  38 #define GREP_SKIP       1
  39 #define GREP_RECURSE    2
  40
  41 #define BIN_FILE_BIN    0
  42 #define BIN_FILE_SKIP   1
  43 #define BIN_FILE_TEXT   2
  44
  45 #define LINK_EXPLICIT   0
  46 #define LINK_FOLLOW     1
  47 #define LINK_SKIP       2
  48
  49 #define MAX_LINE_MATCHES        30
  50
  51 typedef struct {
  52         size_t len;
  53         int line_no;
  54         int off;
  55         const char *file;
  56         char *dat;
  57 } str_t;
  58
  59 /* Flags passed to regcomp() and regexec() */
  60 extern int cflags, eflags;
  61
  62 /* Command line flags */
  63 extern int Aflag, Bflag, Fflag, Lflag, bflag, cflag, lflag, mflag,
  64         nflag, oflag, qflag, sflag, vflag, wflag, xflag;
  65
  66 extern int colours;
  67 extern const char *grep_colour;
  68 extern char fn_endchar, fn_colonchar, fn_dashchar;
  69 extern char line_endchar;
  70
  71 extern int output_filenames;
  72
  73 extern int maxcount;
  74
  75 /* Argv[0] flags */
  76 extern int zgrep;
  77
  78 extern int binbehave, dirbehave, devbehave;
  79 /* extern int linkbehave; */
  80 extern const char *stdin_label;
  81
  82 extern int first, matchall, patterns, tail;
  83 extern char **pattern;
  84 extern regex_t *r_pattern;
  85
  86 /*
  87  * For regex errors, 512 seems to be big enough
  88  */
  89 #define RE_ERROR_BUF    512
  90
  91 extern char re_error[RE_ERROR_BUF + 1];
  92
  93 /* util.c */
  94 int procfile(const char *fn);
  95 int grep_tree(char **argv);
  96
  97 void *grep_malloc(size_t size);
  98 void *grep_realloc(void *ptr, size_t size);
  99 void printline(str_t *line, int sep, regmatch_t *matches, int m);
 100
 101 /* queue.c */
 102 void initqueue(void);
 103 void enqueue(str_t *x);
 104 void printqueue(void);
 105 void clearqueue(void);
 106
 107 /* mmfile.c */
 108 typedef struct mmfile {
 109         int fd;
 110         size_t len;
 111         char *base, *end, *ptr;
 112 } mmf_t;
 113
 114 mmf_t *mmopen(const char *fn, const char *mode);
 115 void mmclose(mmf_t *mmf);
 116 char *mmfgetln(mmf_t *mmf, size_t *l);
 117 void mmrewind(mmf_t *mmf);
 118
 119 /* file.c */
 120 struct file;
 121 typedef struct file file_t;
 122
 123 file_t *grep_fdopen(int fd, const char *mode);
 124 file_t *grep_open(const char *path, const char *mode);
 125
 126 int grep_bin_file(file_t *f);
 127 char *grep_fgetln(file_t *f, size_t *l);
 128 void grep_close(file_t *f);
 129
 130 /* binary.c */
 131 int bin_file(FILE * f);
 132 int gzbin_file(gzFile * f);
 133 int mmbin_file(mmf_t *f);
 134