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63e7e9d8b6
This patch teaches git-grep the --perl-regexp/-P options (naming borrowed from GNU grep) in order to allow specifying PCRE regexes on the command line. PCRE has a number of features which make them more handy to use than POSIX regexes, like consistent escaping rules, extended character classes, ungreedy matching etc. git isn't build with PCRE support automatically. USE_LIBPCRE environment variable must be enabled (like `make USE_LIBPCRE=YesPlease`). Signed-off-by: Michał Kiedrowicz <michal.kiedrowicz@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
129 lines
2.8 KiB
C
129 lines
2.8 KiB
C
#ifndef GREP_H
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#define GREP_H
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#include "color.h"
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#ifdef USE_LIBPCRE
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#include <pcre.h>
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#else
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typedef int pcre;
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typedef int pcre_extra;
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#endif
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enum grep_pat_token {
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GREP_PATTERN,
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GREP_PATTERN_HEAD,
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GREP_PATTERN_BODY,
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GREP_AND,
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GREP_OPEN_PAREN,
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GREP_CLOSE_PAREN,
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GREP_NOT,
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GREP_OR
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};
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enum grep_context {
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GREP_CONTEXT_HEAD,
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GREP_CONTEXT_BODY
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};
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enum grep_header_field {
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GREP_HEADER_AUTHOR = 0,
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GREP_HEADER_COMMITTER
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};
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#define GREP_HEADER_FIELD_MAX (GREP_HEADER_COMMITTER + 1)
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struct grep_pat {
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struct grep_pat *next;
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const char *origin;
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int no;
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enum grep_pat_token token;
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const char *pattern;
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size_t patternlen;
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enum grep_header_field field;
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regex_t regexp;
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pcre *pcre_regexp;
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pcre_extra *pcre_extra_info;
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unsigned fixed:1;
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unsigned ignore_case:1;
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unsigned word_regexp:1;
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};
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enum grep_expr_node {
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GREP_NODE_ATOM,
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GREP_NODE_NOT,
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GREP_NODE_AND,
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GREP_NODE_TRUE,
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GREP_NODE_OR
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};
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struct grep_expr {
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enum grep_expr_node node;
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unsigned hit;
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union {
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struct grep_pat *atom;
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struct grep_expr *unary;
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struct {
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struct grep_expr *left;
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struct grep_expr *right;
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} binary;
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} u;
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};
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struct grep_opt {
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struct grep_pat *pattern_list;
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struct grep_pat **pattern_tail;
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struct grep_pat *header_list;
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struct grep_pat **header_tail;
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struct grep_expr *pattern_expression;
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const char *prefix;
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int prefix_length;
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regex_t regexp;
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int linenum;
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int invert;
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int ignore_case;
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int status_only;
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int name_only;
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int unmatch_name_only;
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int count;
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int word_regexp;
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int fixed;
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int all_match;
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#define GREP_BINARY_DEFAULT 0
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#define GREP_BINARY_NOMATCH 1
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#define GREP_BINARY_TEXT 2
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int binary;
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int extended;
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int pcre;
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int relative;
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int pathname;
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int null_following_name;
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int color;
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int max_depth;
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int funcname;
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char color_context[COLOR_MAXLEN];
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char color_filename[COLOR_MAXLEN];
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char color_function[COLOR_MAXLEN];
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char color_lineno[COLOR_MAXLEN];
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char color_match[COLOR_MAXLEN];
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char color_selected[COLOR_MAXLEN];
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char color_sep[COLOR_MAXLEN];
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int regflags;
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unsigned pre_context;
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unsigned post_context;
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unsigned last_shown;
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int show_hunk_mark;
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void *priv;
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void (*output)(struct grep_opt *opt, const void *data, size_t size);
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void *output_priv;
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};
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extern void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t);
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extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
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extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
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extern void compile_grep_patterns(struct grep_opt *opt);
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extern void free_grep_patterns(struct grep_opt *opt);
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extern int grep_buffer(struct grep_opt *opt, const char *name, char *buf, unsigned long size);
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extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
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extern int grep_threads_ok(const struct grep_opt *opt);
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#endif
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