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#ifndef GREP_H
#define GREP_H
#include "color.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,
};
enum grep_header_field {
GREP_HEADER_AUTHOR = 0,
GREP_HEADER_COMMITTER,
};
struct grep_pat {
struct grep_pat *next;
const char *origin;
int no;
enum grep_pat_token token;
const char *pattern;
enum grep_header_field field;
regex_t regexp;
unsigned fixed:1;
unsigned word_regexp:1;
};
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;
unsigned null_following_name:1;
int color;
char color_match[COLOR_MAXLEN];
const char *color_external;
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 append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
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
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