Andrew's git - gitweb.git/blob

14f47189f9f0c94f2863836446dd16ca00ca390e
   1#ifndef GREP_H
   2#define GREP_H
   3#include "color.h"
   4#ifdef USE_LIBPCRE1
   5#include <pcre.h>
   6#ifndef PCRE_STUDY_JIT_COMPILE
   7#define PCRE_STUDY_JIT_COMPILE 0
   8#endif
   9#else
  10typedef int pcre;
  11typedef int pcre_extra;
  12typedef int pcre_jit_stack;
  13#endif
  14#include "kwset.h"
  15#include "thread-utils.h"
  16#include "userdiff.h"
  17
  18enum grep_pat_token {
  19        GREP_PATTERN,
  20        GREP_PATTERN_HEAD,
  21        GREP_PATTERN_BODY,
  22        GREP_AND,
  23        GREP_OPEN_PAREN,
  24        GREP_CLOSE_PAREN,
  25        GREP_NOT,
  26        GREP_OR
  27};
  28
  29enum grep_context {
  30        GREP_CONTEXT_HEAD,
  31        GREP_CONTEXT_BODY
  32};
  33
  34enum grep_header_field {
  35        GREP_HEADER_FIELD_MIN = 0,
  36        GREP_HEADER_AUTHOR = GREP_HEADER_FIELD_MIN,
  37        GREP_HEADER_COMMITTER,
  38        GREP_HEADER_REFLOG,
  39
  40        /* Must be at the end of the enum */
  41        GREP_HEADER_FIELD_MAX
  42};
  43
  44struct grep_pat {
  45        struct grep_pat *next;
  46        const char *origin;
  47        int no;
  48        enum grep_pat_token token;
  49        char *pattern;
  50        size_t patternlen;
  51        enum grep_header_field field;
  52        regex_t regexp;
  53        pcre *pcre1_regexp;
  54        pcre_extra *pcre1_extra_info;
  55        pcre_jit_stack *pcre1_jit_stack;
  56        const unsigned char *pcre1_tables;
  57        int pcre1_jit_on;
  58        kwset_t kws;
  59        unsigned fixed:1;
  60        unsigned ignore_case:1;
  61        unsigned word_regexp:1;
  62};
  63
  64enum grep_expr_node {
  65        GREP_NODE_ATOM,
  66        GREP_NODE_NOT,
  67        GREP_NODE_AND,
  68        GREP_NODE_TRUE,
  69        GREP_NODE_OR
  70};
  71
  72enum grep_pattern_type {
  73        GREP_PATTERN_TYPE_UNSPECIFIED = 0,
  74        GREP_PATTERN_TYPE_BRE,
  75        GREP_PATTERN_TYPE_ERE,
  76        GREP_PATTERN_TYPE_FIXED,
  77        GREP_PATTERN_TYPE_PCRE
  78};
  79
  80struct grep_expr {
  81        enum grep_expr_node node;
  82        unsigned hit;
  83        union {
  84                struct grep_pat *atom;
  85                struct grep_expr *unary;
  86                struct {
  87                        struct grep_expr *left;
  88                        struct grep_expr *right;
  89                } binary;
  90        } u;
  91};
  92
  93struct grep_opt {
  94        struct grep_pat *pattern_list;
  95        struct grep_pat **pattern_tail;
  96        struct grep_pat *header_list;
  97        struct grep_pat **header_tail;
  98        struct grep_expr *pattern_expression;
  99        const char *prefix;
 100        int prefix_length;
 101        regex_t regexp;
 102        int linenum;
 103        int invert;
 104        int ignore_case;
 105        int status_only;
 106        int name_only;
 107        int unmatch_name_only;
 108        int count;
 109        int word_regexp;
 110        int fixed;
 111        int all_match;
 112        int debug;
 113#define GREP_BINARY_DEFAULT     0
 114#define GREP_BINARY_NOMATCH     1
 115#define GREP_BINARY_TEXT        2
 116        int binary;
 117        int allow_textconv;
 118        int extended;
 119        int use_reflog_filter;
 120        int pcre1;
 121        int relative;
 122        int pathname;
 123        int null_following_name;
 124        int color;
 125        int max_depth;
 126        int funcname;
 127        int funcbody;
 128        int extended_regexp_option;
 129        int pattern_type_option;
 130        char color_context[COLOR_MAXLEN];
 131        char color_filename[COLOR_MAXLEN];
 132        char color_function[COLOR_MAXLEN];
 133        char color_lineno[COLOR_MAXLEN];
 134        char color_match_context[COLOR_MAXLEN];
 135        char color_match_selected[COLOR_MAXLEN];
 136        char color_selected[COLOR_MAXLEN];
 137        char color_sep[COLOR_MAXLEN];
 138        int regflags;
 139        unsigned pre_context;
 140        unsigned post_context;
 141        unsigned last_shown;
 142        int show_hunk_mark;
 143        int file_break;
 144        int heading;
 145        void *priv;
 146
 147        void (*output)(struct grep_opt *opt, const void *data, size_t size);
 148        void *output_priv;
 149};
 150
 151extern void init_grep_defaults(void);
 152extern int grep_config(const char *var, const char *value, void *);
 153extern void grep_init(struct grep_opt *, const char *prefix);
 154void grep_commit_pattern_type(enum grep_pattern_type, struct grep_opt *opt);
 155
 156extern void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t);
 157extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
 158extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
 159extern void compile_grep_patterns(struct grep_opt *opt);
 160extern void free_grep_patterns(struct grep_opt *opt);
 161extern int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size);
 162
 163struct grep_source {
 164        char *name;
 165
 166        enum grep_source_type {
 167                GREP_SOURCE_SHA1,
 168                GREP_SOURCE_FILE,
 169                GREP_SOURCE_BUF,
 170                GREP_SOURCE_SUBMODULE,
 171        } type;
 172        void *identifier;
 173
 174        char *buf;
 175        unsigned long size;
 176
 177        char *path; /* for attribute lookups */
 178        struct userdiff_driver *driver;
 179};
 180
 181void grep_source_init(struct grep_source *gs, enum grep_source_type type,
 182                      const char *name, const char *path,
 183                      const void *identifier);
 184void grep_source_clear_data(struct grep_source *gs);
 185void grep_source_clear(struct grep_source *gs);
 186void grep_source_load_driver(struct grep_source *gs);
 187
 188
 189int grep_source(struct grep_opt *opt, struct grep_source *gs);
 190
 191extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
 192extern int grep_threads_ok(const struct grep_opt *opt);
 193
 194#ifndef NO_PTHREADS
 195/*
 196 * Mutex used around access to the attributes machinery if
 197 * opt->use_threads.  Must be initialized/destroyed by callers!
 198 */
 199extern int grep_use_locks;
 200extern pthread_mutex_t grep_attr_mutex;
 201extern pthread_mutex_t grep_read_mutex;
 202
 203static inline void grep_read_lock(void)
 204{
 205        if (grep_use_locks)
 206                pthread_mutex_lock(&grep_read_mutex);
 207}
 208
 209static inline void grep_read_unlock(void)
 210{
 211        if (grep_use_locks)
 212                pthread_mutex_unlock(&grep_read_mutex);
 213}
 214
 215#else
 216#define grep_read_lock()
 217#define grep_read_unlock()
 218#endif
 219
 220#endif