grep.h

   1 #ifndef GREP_H
   2 #define GREP_H
   3 #include "color.h"
   4 #ifdef USE_LIBPCRE1
   5 #include <pcre.h>
   6 #ifndef PCRE_STUDY_JIT_COMPILE
   7 #define PCRE_STUDY_JIT_COMPILE 0
   8 #endif
   9 #else
  10 typedef int pcre;
  11 typedef int pcre_extra;
  12 typedef int pcre_jit_stack;
  13 #endif
  14 #include "kwset.h"
  15 #include "thread-utils.h"
  16 #include "userdiff.h"
  17
  18 enum grep_pat_token {
  19         GREP_PATTERN,
  20         GREP_PATTERN_HEAD,
  21         GREP_PATTERN_BODY,
  22         GREP_AND,
  23         GREP_OPEN_PAREN,
  24         GREP_CLOSE_PAREN,
  25         GREP_NOT,
  26         GREP_OR
  27 };
  28
  29 enum grep_context {
  30         GREP_CONTEXT_HEAD,
  31         GREP_CONTEXT_BODY
  32 };
  33
  34 enum grep_header_field {
  35         GREP_HEADER_FIELD_MIN = 0,
  36         GREP_HEADER_AUTHOR = GREP_HEADER_FIELD_MIN,
  37         GREP_HEADER_COMMITTER,
  38         GREP_HEADER_REFLOG,
  39
  40         /* Must be at the end of the enum */
  41         GREP_HEADER_FIELD_MAX
  42 };
  43
  44 struct grep_pat {
  45         struct grep_pat *next;
  46         const char *origin;
  47         int no;
  48         enum grep_pat_token token;
  49         char *pattern;
  50         size_t patternlen;
  51         enum grep_header_field field;
  52         regex_t regexp;
  53         pcre *pcre1_regexp;
  54         pcre_extra *pcre1_extra_info;
  55         pcre_jit_stack *pcre1_jit_stack;
  56         const unsigned char *pcre1_tables;
  57         int pcre1_jit_on;
  58         kwset_t kws;
  59         unsigned fixed:1;
  60         unsigned ignore_case:1;
  61         unsigned word_regexp:1;
  62 };
  63
  64 enum grep_expr_node {
  65         GREP_NODE_ATOM,
  66         GREP_NODE_NOT,
  67         GREP_NODE_AND,
  68         GREP_NODE_TRUE,
  69         GREP_NODE_OR
  70 };
  71
  72 enum grep_pattern_type {
  73         GREP_PATTERN_TYPE_UNSPECIFIED = 0,
  74         GREP_PATTERN_TYPE_BRE,
  75         GREP_PATTERN_TYPE_ERE,
  76         GREP_PATTERN_TYPE_FIXED,
  77         GREP_PATTERN_TYPE_PCRE
  78 };
  79
  80 struct grep_expr {
  81         enum grep_expr_node node;
  82         unsigned hit;
  83         union {
  84                 struct grep_pat *atom;
  85                 struct grep_expr *unary;
  86                 struct {
  87                         struct grep_expr *left;
  88                         struct grep_expr *right;
  89                 } binary;
  90         } u;
  91 };
  92
  93 struct grep_opt {
  94         struct grep_pat *pattern_list;
  95         struct grep_pat **pattern_tail;
  96         struct grep_pat *header_list;
  97         struct grep_pat **header_tail;
  98         struct grep_expr *pattern_expression;
  99         const char *prefix;
 100         int prefix_length;
 101         regex_t regexp;
 102         int linenum;
 103         int invert;
 104         int ignore_case;
 105         int status_only;
 106         int name_only;
 107         int unmatch_name_only;
 108         int count;
 109         int word_regexp;
 110         int fixed;
 111         int all_match;
 112         int debug;
 113 #define GREP_BINARY_DEFAULT     0
 114 #define GREP_BINARY_NOMATCH     1
 115 #define GREP_BINARY_TEXT        2
 116         int binary;
 117         int allow_textconv;
 118         int extended;
 119         int use_reflog_filter;
 120         int pcre1;
 121         int relative;
 122         int pathname;
 123         int null_following_name;
 124         int color;
 125         int max_depth;
 126         int funcname;
 127         int funcbody;
 128         int extended_regexp_option;
 129         int pattern_type_option;
 130         char color_context[COLOR_MAXLEN];
 131         char color_filename[COLOR_MAXLEN];
 132         char color_function[COLOR_MAXLEN];
 133         char color_lineno[COLOR_MAXLEN];
 134         char color_match_context[COLOR_MAXLEN];
 135         char color_match_selected[COLOR_MAXLEN];
 136         char color_selected[COLOR_MAXLEN];
 137         char color_sep[COLOR_MAXLEN];
 138         int regflags;
 139         unsigned pre_context;
 140         unsigned post_context;
 141         unsigned last_shown;
 142         int show_hunk_mark;
 143         int file_break;
 144         int heading;
 145         void *priv;
 146
 147         void (*output)(struct grep_opt *opt, const void *data, size_t size);
 148         void *output_priv;
 149 };
 150
 151 extern void init_grep_defaults(void);
 152 extern int grep_config(const char *var, const char *value, void *);
 153 extern void grep_init(struct grep_opt *, const char *prefix);
 154 void grep_commit_pattern_type(enum grep_pattern_type, struct grep_opt *opt);
 155
 156 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);
 157 extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
 158 extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
 159 extern void compile_grep_patterns(struct grep_opt *opt);
 160 extern void free_grep_patterns(struct grep_opt *opt);
 161 extern int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size);
 162
 163 struct grep_source {
 164         char *name;
 165
 166         enum grep_source_type {
 167                 GREP_SOURCE_SHA1,
 168                 GREP_SOURCE_FILE,
 169                 GREP_SOURCE_BUF,
 170                 GREP_SOURCE_SUBMODULE,
 171         } type;
 172         void *identifier;
 173
 174         char *buf;
 175         unsigned long size;
 176
 177         char *path; /* for attribute lookups */
 178         struct userdiff_driver *driver;
 179 };
 180
 181 void grep_source_init(struct grep_source *gs, enum grep_source_type type,
 182                       const char *name, const char *path,
 183                       const void *identifier);
 184 void grep_source_clear_data(struct grep_source *gs);
 185 void grep_source_clear(struct grep_source *gs);
 186 void grep_source_load_driver(struct grep_source *gs);
 187
 188
 189 int grep_source(struct grep_opt *opt, struct grep_source *gs);
 190
 191 extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
 192 extern int grep_threads_ok(const struct grep_opt *opt);
 193
 194 #ifndef NO_PTHREADS
 195 /*
 196  * Mutex used around access to the attributes machinery if
 197  * opt->use_threads.  Must be initialized/destroyed by callers!
 198  */
 199 extern int grep_use_locks;
 200 extern pthread_mutex_t grep_attr_mutex;
 201 extern pthread_mutex_t grep_read_mutex;
 202
 203 static inline void grep_read_lock(void)
 204 {
 205         if (grep_use_locks)
 206                 pthread_mutex_lock(&grep_read_mutex);
 207 }
 208
 209 static inline void grep_read_unlock(void)
 210 {
 211         if (grep_use_locks)
 212                 pthread_mutex_unlock(&grep_read_mutex);
 213 }
 214
 215 #else
 216 #define grep_read_lock()
 217 #define grep_read_unlock()
 218 #endif
 219
 220 #endif