commands/grep/grep.h

   1 /*      $OpenBSD: grep.h,v 1.13 2006/02/09 09:54:47 otto 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 <limits.h>
  32 #include <regex.h>
  33 #include <stdio.h>
  34
  35 #ifndef NOZ
  36 #include <zlib.h>
  37 #endif
  38
  39 #define VER_MAJ 1
  40 #define VER_MIN 2
  41
  42 #define BIN_FILE_BIN    0
  43 #define BIN_FILE_SKIP   1
  44 #define BIN_FILE_TEXT   2
  45
  46 typedef struct {
  47         size_t           len;
  48         int              line_no;
  49         off_t            off;
  50         char            *file;
  51         char            *dat;
  52 } str_t;
  53
  54 typedef struct {
  55         unsigned char   *pattern;
  56         int              patternLen;
  57         int              qsBc[UCHAR_MAX + 1];
  58         /* flags */
  59         int              bol;
  60         int              eol;
  61         int              wmatch;
  62         int              reversedSearch;
  63 } fastgrep_t;
  64
  65 /* Flags passed to regcomp() and regexec() */
  66 extern int       cflags, eflags;
  67
  68 /* Command line flags */
  69 extern int       Aflag, Bflag, Eflag, Fflag, Gflag, Hflag, Lflag, Pflag,
  70                  Sflag, Rflag, Zflag,
  71                  bflag, cflag, hflag, iflag, lflag, nflag, qflag, sflag,
  72                  vflag, wflag, xflag;
  73 extern int       binbehave;
  74
  75 extern int       first, matchall, patterns, tail;
  76 extern char    **pattern;
  77 extern fastgrep_t *fg_pattern;
  78 extern regex_t  *r_pattern;
  79
  80 /* For regex errors  */
  81 #define RE_ERROR_BUF 512
  82 extern char      re_error[RE_ERROR_BUF + 1];    /* Seems big enough */
  83
  84 /* util.c */
  85 int              procfile(char *fn);
  86 int              grep_tree(char **argv);
  87 void            *grep_malloc(size_t size);
  88 void            *grep_calloc(size_t nmemb, size_t size);
  89 void            *grep_realloc(void *ptr, size_t size);
  90 void             printline(str_t *line, int sep);
  91 int              fastcomp(fastgrep_t *, const char *);
  92 void             fgrepcomp(fastgrep_t *, const char *);
  93
  94 /* queue.c */
  95 void             initqueue(void);
  96 void             enqueue(str_t *x);
  97 void             printqueue(void);
  98 void             clearqueue(void);
  99
 100 /* mmfile.c */
 101 typedef struct mmfile {
 102         int      fd;
 103         size_t   len;
 104         unsigned char   *base, *end, *ptr;
 105 } mmf_t;
 106
 107 mmf_t           *mmopen(char *fn, char *mode);
 108 void             mmclose(mmf_t *mmf);
 109 char            *mmfgetln(mmf_t *mmf, size_t *l);
 110
 111 /* file.c */
 112 struct file;
 113 typedef struct file file_t;
 114
 115 file_t          *grep_fdopen(int fd, char *mode);
 116 file_t          *grep_open(char *path, char *mode);
 117 int              grep_bin_file(file_t *f);
 118 char            *grep_fgetln(file_t *f, size_t *l);
 119 void             grep_close(file_t *f);
 120
 121 /* binary.c */
 122 int              bin_file(FILE * f);
 123 #ifndef NOZ
 124 int              gzbin_file(gzFile * f);
 125 #endif
 126 int              mmbin_file(mmf_t *f);
 127