diff options
Diffstat (limited to 'grep.h')
| -rw-r--r-- | grep.h | 81 |
1 files changed, 81 insertions, 0 deletions
@@ -0,0 +1,81 @@ +#ifndef GREP_H +#define GREP_H + +enum grep_pat_token { + GREP_PATTERN, + GREP_PATTERN_HEAD, + GREP_PATTERN_BODY, + GREP_AND, + GREP_OPEN_PAREN, + GREP_CLOSE_PAREN, + GREP_NOT, + GREP_OR, +}; + +enum grep_context { + GREP_CONTEXT_HEAD, + GREP_CONTEXT_BODY, +}; + +struct grep_pat { + struct grep_pat *next; + const char *origin; + int no; + enum grep_pat_token token; + const char *pattern; + regex_t regexp; +}; + +enum grep_expr_node { + GREP_NODE_ATOM, + GREP_NODE_NOT, + GREP_NODE_AND, + GREP_NODE_OR, +}; + +struct grep_expr { + enum grep_expr_node node; + unsigned hit; + union { + struct grep_pat *atom; + struct grep_expr *unary; + struct { + struct grep_expr *left; + struct grep_expr *right; + } binary; + } u; +}; + +struct grep_opt { + struct grep_pat *pattern_list; + struct grep_pat **pattern_tail; + struct grep_expr *pattern_expression; + int prefix_length; + regex_t regexp; + unsigned linenum:1; + unsigned invert:1; + unsigned status_only:1; + unsigned name_only:1; + unsigned unmatch_name_only:1; + unsigned count:1; + unsigned word_regexp:1; + unsigned fixed:1; + unsigned all_match:1; +#define GREP_BINARY_DEFAULT 0 +#define GREP_BINARY_NOMATCH 1 +#define GREP_BINARY_TEXT 2 + unsigned binary:2; + unsigned extended:1; + unsigned relative:1; + unsigned pathname:1; + int regflags; + unsigned pre_context; + unsigned post_context; +}; + +extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t); +extern void compile_grep_patterns(struct grep_opt *opt); +extern void free_grep_patterns(struct grep_opt *opt); +extern int grep_buffer(struct grep_opt *opt, const char *name, char *buf, unsigned long size); + +#endif |