grep.h

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