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