grep.h

   1 #ifndef GREP_H
   2 #define GREP_H
   3 #include "color.h"
   4
   5 enum grep_pat_token {
   6         GREP_PATTERN,
   7         GREP_PATTERN_HEAD,
   8         GREP_PATTERN_BODY,
   9         GREP_AND,
  10         GREP_OPEN_PAREN,
  11         GREP_CLOSE_PAREN,
  12         GREP_NOT,
  13         GREP_OR,
  14 };
  15
  16 enum grep_context {
  17         GREP_CONTEXT_HEAD,
  18         GREP_CONTEXT_BODY,
  19 };
  20
  21 enum grep_header_field {
  22         GREP_HEADER_AUTHOR = 0,
  23         GREP_HEADER_COMMITTER,
  24 };
  25
  26 struct grep_pat {
  27         struct grep_pat *next;
  28         const char *origin;
  29         int no;
  30         enum grep_pat_token token;
  31         const char *pattern;
  32         enum grep_header_field field;
  33         regex_t regexp;
  34         unsigned fixed:1;
  35         unsigned word_regexp:1;
  36 };
  37
  38 enum grep_expr_node {
  39         GREP_NODE_ATOM,
  40         GREP_NODE_NOT,
  41         GREP_NODE_AND,
  42         GREP_NODE_OR,
  43 };
  44
  45 struct grep_expr {
  46         enum grep_expr_node node;
  47         unsigned hit;
  48         union {
  49                 struct grep_pat *atom;
  50                 struct grep_expr *unary;
  51                 struct {
  52                         struct grep_expr *left;
  53                         struct grep_expr *right;
  54                 } binary;
  55         } u;
  56 };
  57
  58 struct grep_opt {
  59         struct grep_pat *pattern_list;
  60         struct grep_pat **pattern_tail;
  61         struct grep_expr *pattern_expression;
  62         int prefix_length;
  63         regex_t regexp;
  64         unsigned linenum:1;
  65         unsigned invert:1;
  66         unsigned status_only:1;
  67         unsigned name_only:1;
  68         unsigned unmatch_name_only:1;
  69         unsigned count:1;
  70         unsigned word_regexp:1;
  71         unsigned fixed:1;
  72         unsigned all_match:1;
  73 #define GREP_BINARY_DEFAULT     0
  74 #define GREP_BINARY_NOMATCH     1
  75 #define GREP_BINARY_TEXT        2
  76         unsigned binary:2;
  77         unsigned extended:1;
  78         unsigned relative:1;
  79         unsigned pathname:1;
  80         unsigned null_following_name:1;
  81         int color;
  82         char color_match[COLOR_MAXLEN];
  83         const char *color_external;
  84         int regflags;
  85         unsigned pre_context;
  86         unsigned post_context;
  87 };
  88
  89 extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
  90 extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
  91 extern void compile_grep_patterns(struct grep_opt *opt);
  92 extern void free_grep_patterns(struct grep_opt *opt);
  93 extern int grep_buffer(struct grep_opt *opt, const char *name, char *buf, unsigned long size);
  94
  95 #endif