Merge branch 'jc/grep-commandline-vs-configuration'
[git/git.git] / 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 #include "userdiff.h"
13
14 enum grep_pat_token {
15 GREP_PATTERN,
16 GREP_PATTERN_HEAD,
17 GREP_PATTERN_BODY,
18 GREP_AND,
19 GREP_OPEN_PAREN,
20 GREP_CLOSE_PAREN,
21 GREP_NOT,
22 GREP_OR
23 };
24
25 enum grep_context {
26 GREP_CONTEXT_HEAD,
27 GREP_CONTEXT_BODY
28 };
29
30 enum grep_header_field {
31 GREP_HEADER_FIELD_MIN = 0,
32 GREP_HEADER_AUTHOR = GREP_HEADER_FIELD_MIN,
33 GREP_HEADER_COMMITTER,
34 GREP_HEADER_REFLOG,
35
36 /* Must be at the end of the enum */
37 GREP_HEADER_FIELD_MAX
38 };
39
40 struct grep_pat {
41 struct grep_pat *next;
42 const char *origin;
43 int no;
44 enum grep_pat_token token;
45 char *pattern;
46 size_t patternlen;
47 enum grep_header_field field;
48 regex_t regexp;
49 pcre *pcre_regexp;
50 pcre_extra *pcre_extra_info;
51 const unsigned char *pcre_tables;
52 kwset_t kws;
53 unsigned fixed:1;
54 unsigned ignore_case:1;
55 unsigned word_regexp:1;
56 };
57
58 enum grep_expr_node {
59 GREP_NODE_ATOM,
60 GREP_NODE_NOT,
61 GREP_NODE_AND,
62 GREP_NODE_TRUE,
63 GREP_NODE_OR
64 };
65
66 enum grep_pattern_type {
67 GREP_PATTERN_TYPE_UNSPECIFIED = 0,
68 GREP_PATTERN_TYPE_BRE,
69 GREP_PATTERN_TYPE_ERE,
70 GREP_PATTERN_TYPE_FIXED,
71 GREP_PATTERN_TYPE_PCRE
72 };
73
74 struct grep_expr {
75 enum grep_expr_node node;
76 unsigned hit;
77 union {
78 struct grep_pat *atom;
79 struct grep_expr *unary;
80 struct {
81 struct grep_expr *left;
82 struct grep_expr *right;
83 } binary;
84 } u;
85 };
86
87 struct grep_opt {
88 struct grep_pat *pattern_list;
89 struct grep_pat **pattern_tail;
90 struct grep_pat *header_list;
91 struct grep_pat **header_tail;
92 struct grep_expr *pattern_expression;
93 const char *prefix;
94 int prefix_length;
95 regex_t regexp;
96 int linenum;
97 int invert;
98 int ignore_case;
99 int status_only;
100 int name_only;
101 int unmatch_name_only;
102 int count;
103 int word_regexp;
104 int fixed;
105 int all_match;
106 int debug;
107 #define GREP_BINARY_DEFAULT 0
108 #define GREP_BINARY_NOMATCH 1
109 #define GREP_BINARY_TEXT 2
110 int binary;
111 int allow_textconv;
112 int extended;
113 int use_reflog_filter;
114 int pcre;
115 int relative;
116 int pathname;
117 int null_following_name;
118 int color;
119 int max_depth;
120 int funcname;
121 int funcbody;
122 int extended_regexp_option;
123 int pattern_type_option;
124 char color_context[COLOR_MAXLEN];
125 char color_filename[COLOR_MAXLEN];
126 char color_function[COLOR_MAXLEN];
127 char color_lineno[COLOR_MAXLEN];
128 char color_match_context[COLOR_MAXLEN];
129 char color_match_selected[COLOR_MAXLEN];
130 char color_selected[COLOR_MAXLEN];
131 char color_sep[COLOR_MAXLEN];
132 int regflags;
133 unsigned pre_context;
134 unsigned post_context;
135 unsigned last_shown;
136 int show_hunk_mark;
137 int file_break;
138 int heading;
139 void *priv;
140
141 void (*output)(struct grep_opt *opt, const void *data, size_t size);
142 void *output_priv;
143 };
144
145 extern void init_grep_defaults(void);
146 extern int grep_config(const char *var, const char *value, void *);
147 extern void grep_init(struct grep_opt *, const char *prefix);
148 void grep_commit_pattern_type(enum grep_pattern_type, struct grep_opt *opt);
149
150 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);
151 extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
152 extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
153 extern void compile_grep_patterns(struct grep_opt *opt);
154 extern void free_grep_patterns(struct grep_opt *opt);
155 extern int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size);
156
157 struct grep_source {
158 char *name;
159
160 enum grep_source_type {
161 GREP_SOURCE_SHA1,
162 GREP_SOURCE_FILE,
163 GREP_SOURCE_BUF,
164 } type;
165 void *identifier;
166
167 char *buf;
168 unsigned long size;
169
170 char *path; /* for attribute lookups */
171 struct userdiff_driver *driver;
172 };
173
174 void grep_source_init(struct grep_source *gs, enum grep_source_type type,
175 const char *name, const char *path,
176 const void *identifier);
177 void grep_source_clear_data(struct grep_source *gs);
178 void grep_source_clear(struct grep_source *gs);
179 void grep_source_load_driver(struct grep_source *gs);
180
181
182 int grep_source(struct grep_opt *opt, struct grep_source *gs);
183
184 extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
185 extern int grep_threads_ok(const struct grep_opt *opt);
186
187 #ifndef NO_PTHREADS
188 /*
189 * Mutex used around access to the attributes machinery if
190 * opt->use_threads. Must be initialized/destroyed by callers!
191 */
192 extern int grep_use_locks;
193 extern pthread_mutex_t grep_attr_mutex;
194 extern pthread_mutex_t grep_read_mutex;
195
196 static inline void grep_read_lock(void)
197 {
198 if (grep_use_locks)
199 pthread_mutex_lock(&grep_read_mutex);
200 }
201
202 static inline void grep_read_unlock(void)
203 {
204 if (grep_use_locks)
205 pthread_mutex_unlock(&grep_read_mutex);
206 }
207
208 #else
209 #define grep_read_lock()
210 #define grep_read_unlock()
211 #endif
212
213 #endif