#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 |