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