Andrew's git - gitweb.git/blob

   1#ifndef GREP_H
   2#define GREP_H
   3
   4enum grep_pat_token {
   5        GREP_PATTERN,
   6        GREP_PATTERN_HEAD,
   7        GREP_PATTERN_BODY,
   8        GREP_AND,
   9        GREP_OPEN_PAREN,
  10        GREP_CLOSE_PAREN,
  11        GREP_NOT,
  12        GREP_OR,
  13};
  14
  15enum grep_context {
  16        GREP_CONTEXT_HEAD,
  17        GREP_CONTEXT_BODY,
  18};
  19
  20struct grep_pat {
  21        struct grep_pat *next;
  22        const char *origin;
  23        int no;
  24        enum grep_pat_token token;
  25        const char *pattern;
  26        regex_t regexp;
  27};
  28
  29enum grep_expr_node {
  30        GREP_NODE_ATOM,
  31        GREP_NODE_NOT,
  32        GREP_NODE_AND,
  33        GREP_NODE_OR,
  34};
  35
  36struct grep_expr {
  37        enum grep_expr_node node;
  38        union {
  39                struct grep_pat *atom;
  40                struct grep_expr *unary;
  41                struct {
  42                        struct grep_expr *left;
  43                        struct grep_expr *right;
  44                } binary;
  45        } u;
  46};
  47
  48struct grep_opt {
  49        struct grep_pat *pattern_list;
  50        struct grep_pat **pattern_tail;
  51        struct grep_expr *pattern_expression;
  52        int prefix_length;
  53        regex_t regexp;
  54        unsigned linenum:1;
  55        unsigned invert:1;
  56        unsigned status_only:1;
  57        unsigned name_only:1;
  58        unsigned unmatch_name_only:1;
  59        unsigned count:1;
  60        unsigned word_regexp:1;
  61        unsigned fixed:1;
  62#define GREP_BINARY_DEFAULT     0
  63#define GREP_BINARY_NOMATCH     1
  64#define GREP_BINARY_TEXT        2
  65        unsigned binary:2;
  66        unsigned extended:1;
  67        unsigned relative:1;
  68        unsigned pathname:1;
  69        int regflags;
  70        unsigned pre_context;
  71        unsigned post_context;
  72};
  73
  74extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
  75extern void compile_grep_patterns(struct grep_opt *opt);
  76extern void free_grep_patterns(struct grep_opt *opt);
  77extern int grep_buffer(struct grep_opt *opt, const char *name, char *buf, unsigned long size);
  78
  79#endif