Andrew's git - gitweb.git/blob

d54adbe56c4665dad6626f2c8c845da7233bd4a9
   1#ifndef GREP_H
   2#define GREP_H
   3#include "color.h"
   4#ifdef USE_LIBPCRE
   5#include <pcre.h>
   6#else
   7typedef int pcre;
   8typedef int pcre_extra;
   9#endif
  10#include "kwset.h"
  11#include "thread-utils.h"
  12#include "userdiff.h"
  13
  14enum 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
  25enum grep_context {
  26        GREP_CONTEXT_HEAD,
  27        GREP_CONTEXT_BODY
  28};
  29
  30enum grep_header_field {
  31        GREP_HEADER_AUTHOR = 0,
  32        GREP_HEADER_COMMITTER,
  33
  34        /* Must be at the end of the enum */
  35        GREP_HEADER_FIELD_MAX
  36};
  37
  38struct grep_pat {
  39        struct grep_pat *next;
  40        const char *origin;
  41        int no;
  42        enum grep_pat_token token;
  43        char *pattern;
  44        size_t patternlen;
  45        enum grep_header_field field;
  46        regex_t regexp;
  47        pcre *pcre_regexp;
  48        pcre_extra *pcre_extra_info;
  49        kwset_t kws;
  50        unsigned fixed:1;
  51        unsigned ignore_case:1;
  52        unsigned word_regexp:1;
  53};
  54
  55enum grep_expr_node {
  56        GREP_NODE_ATOM,
  57        GREP_NODE_NOT,
  58        GREP_NODE_AND,
  59        GREP_NODE_TRUE,
  60        GREP_NODE_OR
  61};
  62
  63enum grep_pattern_type {
  64        GREP_PATTERN_TYPE_UNSPECIFIED = 0,
  65        GREP_PATTERN_TYPE_BRE,
  66        GREP_PATTERN_TYPE_ERE,
  67        GREP_PATTERN_TYPE_FIXED,
  68        GREP_PATTERN_TYPE_PCRE
  69};
  70
  71struct grep_expr {
  72        enum grep_expr_node node;
  73        unsigned hit;
  74        union {
  75                struct grep_pat *atom;
  76                struct grep_expr *unary;
  77                struct {
  78                        struct grep_expr *left;
  79                        struct grep_expr *right;
  80                } binary;
  81        } u;
  82};
  83
  84struct grep_opt {
  85        struct grep_pat *pattern_list;
  86        struct grep_pat **pattern_tail;
  87        struct grep_pat *header_list;
  88        struct grep_pat **header_tail;
  89        struct grep_expr *pattern_expression;
  90        const char *prefix;
  91        int prefix_length;
  92        regex_t regexp;
  93        int linenum;
  94        int invert;
  95        int ignore_case;
  96        int status_only;
  97        int name_only;
  98        int unmatch_name_only;
  99        int count;
 100        int word_regexp;
 101        int fixed;
 102        int all_match;
 103        int debug;
 104#define GREP_BINARY_DEFAULT     0
 105#define GREP_BINARY_NOMATCH     1
 106#define GREP_BINARY_TEXT        2
 107        int binary;
 108        int extended;
 109        int pcre;
 110        int relative;
 111        int pathname;
 112        int null_following_name;
 113        int color;
 114        int max_depth;
 115        int funcname;
 116        int funcbody;
 117        int extended_regexp_option;
 118        int pattern_type_option;
 119        char color_context[COLOR_MAXLEN];
 120        char color_filename[COLOR_MAXLEN];
 121        char color_function[COLOR_MAXLEN];
 122        char color_lineno[COLOR_MAXLEN];
 123        char color_match[COLOR_MAXLEN];
 124        char color_selected[COLOR_MAXLEN];
 125        char color_sep[COLOR_MAXLEN];
 126        int regflags;
 127        unsigned pre_context;
 128        unsigned post_context;
 129        unsigned last_shown;
 130        int show_hunk_mark;
 131        int file_break;
 132        int heading;
 133        void *priv;
 134
 135        void (*output)(struct grep_opt *opt, const void *data, size_t size);
 136        void *output_priv;
 137};
 138
 139extern void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t);
 140extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
 141extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
 142extern void compile_grep_patterns(struct grep_opt *opt);
 143extern void free_grep_patterns(struct grep_opt *opt);
 144extern int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size);
 145
 146struct grep_source {
 147        char *name;
 148
 149        enum grep_source_type {
 150                GREP_SOURCE_SHA1,
 151                GREP_SOURCE_FILE,
 152                GREP_SOURCE_BUF,
 153        } type;
 154        void *identifier;
 155
 156        char *buf;
 157        unsigned long size;
 158
 159        struct userdiff_driver *driver;
 160};
 161
 162void grep_source_init(struct grep_source *gs, enum grep_source_type type,
 163                      const char *name, const void *identifier);
 164void grep_source_clear_data(struct grep_source *gs);
 165void grep_source_clear(struct grep_source *gs);
 166void grep_source_load_driver(struct grep_source *gs);
 167
 168
 169int grep_source(struct grep_opt *opt, struct grep_source *gs);
 170
 171extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
 172extern int grep_threads_ok(const struct grep_opt *opt);
 173
 174#ifndef NO_PTHREADS
 175/*
 176 * Mutex used around access to the attributes machinery if
 177 * opt->use_threads.  Must be initialized/destroyed by callers!
 178 */
 179extern int grep_use_locks;
 180extern pthread_mutex_t grep_attr_mutex;
 181extern pthread_mutex_t grep_read_mutex;
 182
 183static inline void grep_read_lock(void)
 184{
 185        if (grep_use_locks)
 186                pthread_mutex_lock(&grep_read_mutex);
 187}
 188
 189static inline void grep_read_unlock(void)
 190{
 191        if (grep_use_locks)
 192                pthread_mutex_unlock(&grep_read_mutex);
 193}
 194
 195#else
 196#define grep_read_lock()
 197#define grep_read_unlock()
 198#endif
 199
 200#endif