1 files changed, 103 insertions, 0 deletions
diff --git a/grep.h b/grep.h
new file mode 100644
index 0000000000..75370f60d7
--- /dev/null
+++ b/grep.h
@@ -0,0 +1,103 @@
+#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 ignore_case: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;
+	const char *prefix;
+	int prefix_length;
+	regex_t regexp;
+	int linenum;
+	int invert;
+	int ignore_case;
+	int status_only;
+	int name_only;
+	int unmatch_name_only;
+	int count;
+	int word_regexp;
+	int fixed;
+	int all_match;
+#define GREP_BINARY_DEFAULT	0
+#define GREP_BINARY_NOMATCH	1
+#define GREP_BINARY_TEXT	2
+	int binary;
+	int extended;
+	int relative;
+	int pathname;
+	int null_following_name;
+	int color;
+	int max_depth;
+	int funcname;
+	char color_match[COLOR_MAXLEN];
+	const char *color_external;
+	int regflags;
+	unsigned pre_context;
+	unsigned post_context;
+	unsigned last_shown;
+	int show_hunk_mark;
+	void *priv;
+};
+
+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