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