c822255cfc
Add the new flag "fixed" to struct grep_pat and set it if the pattern is doesn't contain any regex control characters in addition to if the flag -F/--fixed-strings was specified. This gives a nice speed up on msysgit, where regexec() seems to be extra slow. Before (best of five runs): $ time git grep grep v1.6.1 >/dev/null real 0m0.552s user 0m0.000s sys 0m0.000s $ time git grep -F grep v1.6.1 >/dev/null real 0m0.170s user 0m0.000s sys 0m0.015s With the patch: $ time git grep grep v1.6.1 >/dev/null real 0m0.173s user 0m0.000s sys 0m0.000s The difference is much smaller on Linux, but still measurable. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
91 lines
1.8 KiB
C
91 lines
1.8 KiB
C
#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,
|
|
};
|
|
|
|
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;
|
|
};
|
|
|
|
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 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
|