Andrew's git - gitweb.git/blob

   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_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
  40struct 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        kwset_t kws;
  52        unsigned fixed:1;
  53        unsigned ignore_case:1;
  54        unsigned word_regexp:1;
  55};
  56
  57enum grep_expr_node {
  58        GREP_NODE_ATOM,
  59        GREP_NODE_NOT,
  60        GREP_NODE_AND,
  61        GREP_NODE_TRUE,
  62        GREP_NODE_OR
  63};
  64
  65enum grep_pattern_type {
  66        GREP_PATTERN_TYPE_UNSPECIFIED = 0,
  67        GREP_PATTERN_TYPE_BRE,
  68        GREP_PATTERN_TYPE_ERE,
  69        GREP_PATTERN_TYPE_FIXED,
  70        GREP_PATTERN_TYPE_PCRE
  71};
  72
  73struct grep_expr {
  74        enum grep_expr_node node;
  75        unsigned hit;
  76        union {
  77                struct grep_pat *atom;
  78                struct grep_expr *unary;
  79                struct {
  80                        struct grep_expr *left;
  81                        struct grep_expr *right;
  82                } binary;
  83        } u;
  84};
  85
  86struct grep_opt {
  87        struct grep_pat *pattern_list;
  88        struct grep_pat **pattern_tail;
  89        struct grep_pat *header_list;
  90        struct grep_pat **header_tail;
  91        struct grep_expr *pattern_expression;
  92        const char *prefix;
  93        int prefix_length;
  94        regex_t regexp;
  95        int linenum;
  96        int invert;
  97        int ignore_case;
  98        int status_only;
  99        int name_only;
 100        int unmatch_name_only;
 101        int count;
 102        int word_regexp;
 103        int fixed;
 104        int all_match;
 105        int debug;
 106#define GREP_BINARY_DEFAULT     0
 107#define GREP_BINARY_NOMATCH     1
 108#define GREP_BINARY_TEXT        2
 109        int binary;
 110        int allow_textconv;
 111        int extended;
 112        int use_reflog_filter;
 113        int pcre;
 114        int relative;
 115        int pathname;
 116        int null_following_name;
 117        int color;
 118        int max_depth;
 119        int funcname;
 120        int funcbody;
 121        int extended_regexp_option;
 122        int pattern_type_option;
 123        char color_context[COLOR_MAXLEN];
 124        char color_filename[COLOR_MAXLEN];
 125        char color_function[COLOR_MAXLEN];
 126        char color_lineno[COLOR_MAXLEN];
 127        char color_match_context[COLOR_MAXLEN];
 128        char color_match_selected[COLOR_MAXLEN];
 129        char color_selected[COLOR_MAXLEN];
 130        char color_sep[COLOR_MAXLEN];
 131        int regflags;
 132        unsigned pre_context;
 133        unsigned post_context;
 134        unsigned last_shown;
 135        int show_hunk_mark;
 136        int file_break;
 137        int heading;
 138        void *priv;
 139
 140        void (*output)(struct grep_opt *opt, const void *data, size_t size);
 141        void *output_priv;
 142};
 143
 144extern void init_grep_defaults(void);
 145extern int grep_config(const char *var, const char *value, void *);
 146extern void grep_init(struct grep_opt *, const char *prefix);
 147void grep_set_pattern_type_option(enum grep_pattern_type, struct grep_opt *opt);
 148void grep_commit_pattern_type(enum grep_pattern_type, struct grep_opt *opt);
 149
 150extern void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t);
 151extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
 152extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
 153extern void compile_grep_patterns(struct grep_opt *opt);
 154extern void free_grep_patterns(struct grep_opt *opt);
 155extern int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size);
 156
 157struct 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
 174void grep_source_init(struct grep_source *gs, enum grep_source_type type,
 175                      const char *name, const char *path,
 176                      const void *identifier);
 177void grep_source_clear_data(struct grep_source *gs);
 178void grep_source_clear(struct grep_source *gs);
 179void grep_source_load_driver(struct grep_source *gs);
 180
 181
 182int grep_source(struct grep_opt *opt, struct grep_source *gs);
 183
 184extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
 185extern 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 */
 192extern int grep_use_locks;
 193extern pthread_mutex_t grep_attr_mutex;
 194extern pthread_mutex_t grep_read_mutex;
 195
 196static inline void grep_read_lock(void)
 197{
 198        if (grep_use_locks)
 199                pthread_mutex_lock(&grep_read_mutex);
 200}
 201
 202static 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