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