grep.h

   1 #ifndef GREP_H
   2 #define GREP_H
   3 #include "color.h"
   4 #ifdef USE_LIBPCRE
   5 #include <pcre.h>
   6 #else
   7 typedef int pcre;
   8 typedef int pcre_extra;
   9 #endif
  10 #include "kwset.h"
  11 #include "thread-utils.h"
  12
  13 enum grep_pat_token {
  14         GREP_PATTERN,
  15         GREP_PATTERN_HEAD,
  16         GREP_PATTERN_BODY,
  17         GREP_AND,
  18         GREP_OPEN_PAREN,
  19         GREP_CLOSE_PAREN,
  20         GREP_NOT,
  21         GREP_OR
  22 };
  23
  24 enum grep_context {
  25         GREP_CONTEXT_HEAD,
  26         GREP_CONTEXT_BODY
  27 };
  28
  29 enum grep_header_field {
  30         GREP_HEADER_AUTHOR = 0,
  31         GREP_HEADER_COMMITTER
  32 };
  33 #define GREP_HEADER_FIELD_MAX (GREP_HEADER_COMMITTER + 1)
  34
  35 struct grep_pat {
  36         struct grep_pat *next;
  37         const char *origin;
  38         int no;
  39         enum grep_pat_token token;
  40         const char *pattern;
  41         size_t patternlen;
  42         enum grep_header_field field;
  43         regex_t regexp;
  44         pcre *pcre_regexp;
  45         pcre_extra *pcre_extra_info;
  46         kwset_t kws;
  47         unsigned fixed:1;
  48         unsigned ignore_case:1;
  49         unsigned word_regexp:1;
  50 };
  51
  52 enum grep_expr_node {
  53         GREP_NODE_ATOM,
  54         GREP_NODE_NOT,
  55         GREP_NODE_AND,
  56         GREP_NODE_TRUE,
  57         GREP_NODE_OR
  58 };
  59
  60 struct grep_expr {
  61         enum grep_expr_node node;
  62         unsigned hit;
  63         union {
  64                 struct grep_pat *atom;
  65                 struct grep_expr *unary;
  66                 struct {
  67                         struct grep_expr *left;
  68                         struct grep_expr *right;
  69                 } binary;
  70         } u;
  71 };
  72
  73 struct grep_opt {
  74         struct grep_pat *pattern_list;
  75         struct grep_pat **pattern_tail;
  76         struct grep_pat *header_list;
  77         struct grep_pat **header_tail;
  78         struct grep_expr *pattern_expression;
  79         const char *prefix;
  80         int prefix_length;
  81         regex_t regexp;
  82         int linenum;
  83         int invert;
  84         int ignore_case;
  85         int status_only;
  86         int name_only;
  87         int unmatch_name_only;
  88         int count;
  89         int word_regexp;
  90         int fixed;
  91         int all_match;
  92 #define GREP_BINARY_DEFAULT     0
  93 #define GREP_BINARY_NOMATCH     1
  94 #define GREP_BINARY_TEXT        2
  95         int binary;
  96         int extended;
  97         int pcre;
  98         int relative;
  99         int pathname;
 100         int null_following_name;
 101         int color;
 102         int max_depth;
 103         int funcname;
 104         int funcbody;
 105         char color_context[COLOR_MAXLEN];
 106         char color_filename[COLOR_MAXLEN];
 107         char color_function[COLOR_MAXLEN];
 108         char color_lineno[COLOR_MAXLEN];
 109         char color_match[COLOR_MAXLEN];
 110         char color_selected[COLOR_MAXLEN];
 111         char color_sep[COLOR_MAXLEN];
 112         int regflags;
 113         unsigned pre_context;
 114         unsigned post_context;
 115         unsigned last_shown;
 116         int show_hunk_mark;
 117         int file_break;
 118         int heading;
 119         int use_threads;
 120         void *priv;
 121
 122         void (*output)(struct grep_opt *opt, const void *data, size_t size);
 123         void *output_priv;
 124 };
 125
 126 extern void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t);
 127 extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
 128 extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
 129 extern void compile_grep_patterns(struct grep_opt *opt);
 130 extern void free_grep_patterns(struct grep_opt *opt);
 131 extern int grep_buffer(struct grep_opt *opt, const char *name, char *buf, unsigned long size);
 132
 133 extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
 134 extern int grep_threads_ok(const struct grep_opt *opt);
 135
 136 #ifndef NO_PTHREADS
 137 /*
 138  * Mutex used around access to the attributes machinery if
 139  * opt->use_threads.  Must be initialized/destroyed by callers!
 140  */
 141 extern pthread_mutex_t grep_attr_mutex;
 142 #endif
 143
 144 #endif