Andrew's git / gitweb.git / grep.h
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grep.hon commit grep.c: teach 'git grep --only-matching' (9d8db06)
   1#ifndef GREP_H
   2#define GREP_H
   3#include "color.h"
   4#ifdef USE_LIBPCRE1
   5#include <pcre.h>
   6#ifdef PCRE_CONFIG_JIT
   7#if PCRE_MAJOR >= 8 && PCRE_MINOR >= 32
   8#ifndef NO_LIBPCRE1_JIT
   9#define GIT_PCRE1_USE_JIT
  10#define GIT_PCRE_STUDY_JIT_COMPILE PCRE_STUDY_JIT_COMPILE
  11#endif
  12#endif
  13#endif
  14#ifndef GIT_PCRE_STUDY_JIT_COMPILE
  15#define GIT_PCRE_STUDY_JIT_COMPILE 0
  16#endif
  17#if PCRE_MAJOR <= 8 && PCRE_MINOR < 20
  18typedef int pcre_jit_stack;
  19#endif
  20#else
  21typedef int pcre;
  22typedef int pcre_extra;
  23typedef int pcre_jit_stack;
  24#endif
  25#ifdef USE_LIBPCRE2
  26#define PCRE2_CODE_UNIT_WIDTH 8
  27#include <pcre2.h>
  28#else
  29typedef int pcre2_code;
  30typedef int pcre2_match_data;
  31typedef int pcre2_compile_context;
  32typedef int pcre2_match_context;
  33typedef int pcre2_jit_stack;
  34#endif
  35#include "kwset.h"
  36#include "thread-utils.h"
  37#include "userdiff.h"
  38
  39enum grep_pat_token {
  40        GREP_PATTERN,
  41        GREP_PATTERN_HEAD,
  42        GREP_PATTERN_BODY,
  43        GREP_AND,
  44        GREP_OPEN_PAREN,
  45        GREP_CLOSE_PAREN,
  46        GREP_NOT,
  47        GREP_OR
  48};
  49
  50enum grep_context {
  51        GREP_CONTEXT_HEAD,
  52        GREP_CONTEXT_BODY
  53};
  54
  55enum grep_header_field {
  56        GREP_HEADER_FIELD_MIN = 0,
  57        GREP_HEADER_AUTHOR = GREP_HEADER_FIELD_MIN,
  58        GREP_HEADER_COMMITTER,
  59        GREP_HEADER_REFLOG,
  60
  61        /* Must be at the end of the enum */
  62        GREP_HEADER_FIELD_MAX
  63};
  64
  65struct grep_pat {
  66        struct grep_pat *next;
  67        const char *origin;
  68        int no;
  69        enum grep_pat_token token;
  70        char *pattern;
  71        size_t patternlen;
  72        enum grep_header_field field;
  73        regex_t regexp;
  74        pcre *pcre1_regexp;
  75        pcre_extra *pcre1_extra_info;
  76        pcre_jit_stack *pcre1_jit_stack;
  77        const unsigned char *pcre1_tables;
  78        int pcre1_jit_on;
  79        pcre2_code *pcre2_pattern;
  80        pcre2_match_data *pcre2_match_data;
  81        pcre2_compile_context *pcre2_compile_context;
  82        pcre2_match_context *pcre2_match_context;
  83        pcre2_jit_stack *pcre2_jit_stack;
  84        uint32_t pcre2_jit_on;
  85        kwset_t kws;
  86        unsigned fixed:1;
  87        unsigned ignore_case:1;
  88        unsigned word_regexp:1;
  89};
  90
  91enum grep_expr_node {
  92        GREP_NODE_ATOM,
  93        GREP_NODE_NOT,
  94        GREP_NODE_AND,
  95        GREP_NODE_TRUE,
  96        GREP_NODE_OR
  97};
  98
  99enum grep_pattern_type {
 100        GREP_PATTERN_TYPE_UNSPECIFIED = 0,
 101        GREP_PATTERN_TYPE_BRE,
 102        GREP_PATTERN_TYPE_ERE,
 103        GREP_PATTERN_TYPE_FIXED,
 104        GREP_PATTERN_TYPE_PCRE
 105};
 106
 107struct grep_expr {
 108        enum grep_expr_node node;
 109        unsigned hit;
 110        union {
 111                struct grep_pat *atom;
 112                struct grep_expr *unary;
 113                struct {
 114                        struct grep_expr *left;
 115                        struct grep_expr *right;
 116                } binary;
 117        } u;
 118};
 119
 120struct grep_opt {
 121        struct grep_pat *pattern_list;
 122        struct grep_pat **pattern_tail;
 123        struct grep_pat *header_list;
 124        struct grep_pat **header_tail;
 125        struct grep_expr *pattern_expression;
 126        const char *prefix;
 127        int prefix_length;
 128        regex_t regexp;
 129        int linenum;
 130        int columnnum;
 131        int invert;
 132        int ignore_case;
 133        int status_only;
 134        int name_only;
 135        int unmatch_name_only;
 136        int count;
 137        int word_regexp;
 138        int fixed;
 139        int all_match;
 140        int debug;
 141#define GREP_BINARY_DEFAULT     0
 142#define GREP_BINARY_NOMATCH     1
 143#define GREP_BINARY_TEXT        2
 144        int binary;
 145        int allow_textconv;
 146        int extended;
 147        int use_reflog_filter;
 148        int pcre1;
 149        int pcre2;
 150        int relative;
 151        int pathname;
 152        int null_following_name;
 153        int only_matching;
 154        int color;
 155        int max_depth;
 156        int funcname;
 157        int funcbody;
 158        int extended_regexp_option;
 159        int pattern_type_option;
 160        char color_context[COLOR_MAXLEN];
 161        char color_filename[COLOR_MAXLEN];
 162        char color_function[COLOR_MAXLEN];
 163        char color_lineno[COLOR_MAXLEN];
 164        char color_columnno[COLOR_MAXLEN];
 165        char color_match_context[COLOR_MAXLEN];
 166        char color_match_selected[COLOR_MAXLEN];
 167        char color_selected[COLOR_MAXLEN];
 168        char color_sep[COLOR_MAXLEN];
 169        unsigned pre_context;
 170        unsigned post_context;
 171        unsigned last_shown;
 172        int show_hunk_mark;
 173        int file_break;
 174        int heading;
 175        void *priv;
 176
 177        void (*output)(struct grep_opt *opt, const void *data, size_t size);
 178        void *output_priv;
 179};
 180
 181extern void init_grep_defaults(void);
 182extern int grep_config(const char *var, const char *value, void *);
 183extern void grep_init(struct grep_opt *, const char *prefix);
 184void grep_commit_pattern_type(enum grep_pattern_type, struct grep_opt *opt);
 185
 186extern void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t);
 187extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
 188extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
 189extern void compile_grep_patterns(struct grep_opt *opt);
 190extern void free_grep_patterns(struct grep_opt *opt);
 191extern int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size);
 192
 193struct grep_source {
 194        char *name;
 195
 196        enum grep_source_type {
 197                GREP_SOURCE_OID,
 198                GREP_SOURCE_FILE,
 199                GREP_SOURCE_BUF,
 200        } type;
 201        void *identifier;
 202
 203        char *buf;
 204        unsigned long size;
 205
 206        char *path; /* for attribute lookups */
 207        struct userdiff_driver *driver;
 208};
 209
 210void grep_source_init(struct grep_source *gs, enum grep_source_type type,
 211                      const char *name, const char *path,
 212                      const void *identifier);
 213void grep_source_clear_data(struct grep_source *gs);
 214void grep_source_clear(struct grep_source *gs);
 215void grep_source_load_driver(struct grep_source *gs);
 216
 217
 218int grep_source(struct grep_opt *opt, struct grep_source *gs);
 219
 220extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
 221extern int grep_threads_ok(const struct grep_opt *opt);
 222
 223#ifndef NO_PTHREADS
 224/*
 225 * Mutex used around access to the attributes machinery if
 226 * opt->use_threads.  Must be initialized/destroyed by callers!
 227 */
 228extern int grep_use_locks;
 229extern pthread_mutex_t grep_attr_mutex;
 230extern pthread_mutex_t grep_read_mutex;
 231
 232static inline void grep_read_lock(void)
 233{
 234        if (grep_use_locks)
 235                pthread_mutex_lock(&grep_read_mutex);
 236}
 237
 238static inline void grep_read_unlock(void)
 239{
 240        if (grep_use_locks)
 241                pthread_mutex_unlock(&grep_read_mutex);
 242}
 243
 244#else
 245#define grep_read_lock()
 246#define grep_read_unlock()
 247#endif
 248
 249#endif