grep.h

   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
  18 typedef int pcre_jit_stack;
  19 #endif
  20 #else
  21 typedef int pcre;
  22 typedef int pcre_extra;
  23 typedef int pcre_jit_stack;
  24 #endif
  25 #ifdef USE_LIBPCRE2
  26 #define PCRE2_CODE_UNIT_WIDTH 8
  27 #include <pcre2.h>
  28 #else
  29 typedef int pcre2_code;
  30 typedef int pcre2_match_data;
  31 typedef int pcre2_compile_context;
  32 typedef int pcre2_match_context;
  33 typedef int pcre2_jit_stack;
  34 #endif
  35 #include "kwset.h"
  36 #include "thread-utils.h"
  37 #include "userdiff.h"
  38
  39 struct repository;
  40
  41 enum grep_pat_token {
  42         GREP_PATTERN,
  43         GREP_PATTERN_HEAD,
  44         GREP_PATTERN_BODY,
  45         GREP_AND,
  46         GREP_OPEN_PAREN,
  47         GREP_CLOSE_PAREN,
  48         GREP_NOT,
  49         GREP_OR
  50 };
  51
  52 enum grep_context {
  53         GREP_CONTEXT_HEAD,
  54         GREP_CONTEXT_BODY
  55 };
  56
  57 enum grep_header_field {
  58         GREP_HEADER_FIELD_MIN = 0,
  59         GREP_HEADER_AUTHOR = GREP_HEADER_FIELD_MIN,
  60         GREP_HEADER_COMMITTER,
  61         GREP_HEADER_REFLOG,
  62
  63         /* Must be at the end of the enum */
  64         GREP_HEADER_FIELD_MAX
  65 };
  66
  67 enum grep_color {
  68         GREP_COLOR_CONTEXT,
  69         GREP_COLOR_FILENAME,
  70         GREP_COLOR_FUNCTION,
  71         GREP_COLOR_LINENO,
  72         GREP_COLOR_COLUMNNO,
  73         GREP_COLOR_MATCH_CONTEXT,
  74         GREP_COLOR_MATCH_SELECTED,
  75         GREP_COLOR_SELECTED,
  76         GREP_COLOR_SEP,
  77         NR_GREP_COLORS
  78 };
  79
  80 struct grep_pat {
  81         struct grep_pat *next;
  82         const char *origin;
  83         int no;
  84         enum grep_pat_token token;
  85         char *pattern;
  86         size_t patternlen;
  87         enum grep_header_field field;
  88         regex_t regexp;
  89         pcre *pcre1_regexp;
  90         pcre_extra *pcre1_extra_info;
  91         pcre_jit_stack *pcre1_jit_stack;
  92         const unsigned char *pcre1_tables;
  93         int pcre1_jit_on;
  94         pcre2_code *pcre2_pattern;
  95         pcre2_match_data *pcre2_match_data;
  96         pcre2_compile_context *pcre2_compile_context;
  97         pcre2_match_context *pcre2_match_context;
  98         pcre2_jit_stack *pcre2_jit_stack;
  99         uint32_t pcre2_jit_on;
 100         kwset_t kws;
 101         unsigned fixed:1;
 102         unsigned ignore_case:1;
 103         unsigned word_regexp:1;
 104 };
 105
 106 enum grep_expr_node {
 107         GREP_NODE_ATOM,
 108         GREP_NODE_NOT,
 109         GREP_NODE_AND,
 110         GREP_NODE_TRUE,
 111         GREP_NODE_OR
 112 };
 113
 114 enum grep_pattern_type {
 115         GREP_PATTERN_TYPE_UNSPECIFIED = 0,
 116         GREP_PATTERN_TYPE_BRE,
 117         GREP_PATTERN_TYPE_ERE,
 118         GREP_PATTERN_TYPE_FIXED,
 119         GREP_PATTERN_TYPE_PCRE
 120 };
 121
 122 struct grep_expr {
 123         enum grep_expr_node node;
 124         unsigned hit;
 125         union {
 126                 struct grep_pat *atom;
 127                 struct grep_expr *unary;
 128                 struct {
 129                         struct grep_expr *left;
 130                         struct grep_expr *right;
 131                 } binary;
 132         } u;
 133 };
 134
 135 struct grep_opt {
 136         struct grep_pat *pattern_list;
 137         struct grep_pat **pattern_tail;
 138         struct grep_pat *header_list;
 139         struct grep_pat **header_tail;
 140         struct grep_expr *pattern_expression;
 141         struct repository *repo;
 142         const char *prefix;
 143         int prefix_length;
 144         regex_t regexp;
 145         int linenum;
 146         int columnnum;
 147         int invert;
 148         int ignore_case;
 149         int status_only;
 150         int name_only;
 151         int unmatch_name_only;
 152         int count;
 153         int word_regexp;
 154         int fixed;
 155         int all_match;
 156         int debug;
 157 #define GREP_BINARY_DEFAULT     0
 158 #define GREP_BINARY_NOMATCH     1
 159 #define GREP_BINARY_TEXT        2
 160         int binary;
 161         int allow_textconv;
 162         int extended;
 163         int use_reflog_filter;
 164         int pcre1;
 165         int pcre2;
 166         int relative;
 167         int pathname;
 168         int null_following_name;
 169         int only_matching;
 170         int color;
 171         int max_depth;
 172         int funcname;
 173         int funcbody;
 174         int extended_regexp_option;
 175         int pattern_type_option;
 176         char colors[NR_GREP_COLORS][COLOR_MAXLEN];
 177         unsigned pre_context;
 178         unsigned post_context;
 179         unsigned last_shown;
 180         int show_hunk_mark;
 181         int file_break;
 182         int heading;
 183         void *priv;
 184
 185         void (*output)(struct grep_opt *opt, const void *data, size_t size);
 186         void *output_priv;
 187 };
 188
 189 extern void init_grep_defaults(struct repository *);
 190 extern int grep_config(const char *var, const char *value, void *);
 191 extern void grep_init(struct grep_opt *, struct repository *repo, const char *prefix);
 192 void grep_commit_pattern_type(enum grep_pattern_type, struct grep_opt *opt);
 193
 194 extern void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t);
 195 extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
 196 extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
 197 extern void compile_grep_patterns(struct grep_opt *opt);
 198 extern void free_grep_patterns(struct grep_opt *opt);
 199 extern int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size);
 200
 201 struct grep_source {
 202         char *name;
 203
 204         enum grep_source_type {
 205                 GREP_SOURCE_OID,
 206                 GREP_SOURCE_FILE,
 207                 GREP_SOURCE_BUF,
 208         } type;
 209         void *identifier;
 210
 211         char *buf;
 212         unsigned long size;
 213
 214         char *path; /* for attribute lookups */
 215         struct userdiff_driver *driver;
 216 };
 217
 218 void grep_source_init(struct grep_source *gs, enum grep_source_type type,
 219                       const char *name, const char *path,
 220                       const void *identifier);
 221 void grep_source_clear_data(struct grep_source *gs);
 222 void grep_source_clear(struct grep_source *gs);
 223 void grep_source_load_driver(struct grep_source *gs,
 224                              struct index_state *istate);
 225
 226
 227 int grep_source(struct grep_opt *opt, struct grep_source *gs);
 228
 229 extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
 230 extern int grep_threads_ok(const struct grep_opt *opt);
 231
 232 #ifndef NO_PTHREADS
 233 /*
 234  * Mutex used around access to the attributes machinery if
 235  * opt->use_threads.  Must be initialized/destroyed by callers!
 236  */
 237 extern int grep_use_locks;
 238 extern pthread_mutex_t grep_attr_mutex;
 239 extern pthread_mutex_t grep_read_mutex;
 240
 241 static inline void grep_read_lock(void)
 242 {
 243         if (grep_use_locks)
 244                 pthread_mutex_lock(&grep_read_mutex);
 245 }
 246
 247 static inline void grep_read_unlock(void)
 248 {
 249         if (grep_use_locks)
 250                 pthread_mutex_unlock(&grep_read_mutex);
 251 }
 252
 253 #else
 254 #define grep_read_lock()
 255 #define grep_read_unlock()
 256 #endif
 257
 258 #endif