Merge branch 'baserock/jonathanmaw/S9007/upgrade-git' into baserock/morphbaserock/morph

Reviewed-by: Lars Wirzenius <lars.wirzenius@codethink.co.uk>
Reviewed-by: Daniel Silverstone <daniel.silverstone@codethink.co.uk>

1 files changed, 73 insertions, 6 deletions

diff --git a/grep.h b/grep.h
index fb205f3542..e4a1df56a4 100644
--- a/grep.h
+++ b/grep.h
@@ -9,6 +9,7 @@ typedef int pcre_extra;
 #endif
 #include "kwset.h"
 #include "thread-utils.h"
+#include "userdiff.h"
 
 enum grep_pat_token {
 	GREP_PATTERN,
@@ -27,17 +28,21 @@ enum grep_context {
 };
 
 enum grep_header_field {
-	GREP_HEADER_AUTHOR = 0,
-	GREP_HEADER_COMMITTER
+	GREP_HEADER_FIELD_MIN = 0,
+	GREP_HEADER_AUTHOR = GREP_HEADER_FIELD_MIN,
+	GREP_HEADER_COMMITTER,
+	GREP_HEADER_REFLOG,
+
+	/* Must be at the end of the enum */
+	GREP_HEADER_FIELD_MAX
 };
-#define GREP_HEADER_FIELD_MAX (GREP_HEADER_COMMITTER + 1)
 
 struct grep_pat {
 	struct grep_pat *next;
 	const char *origin;
 	int no;
 	enum grep_pat_token token;
-	const char *pattern;
+	char *pattern;
 	size_t patternlen;
 	enum grep_header_field field;
 	regex_t regexp;
@@ -57,6 +62,14 @@ enum grep_expr_node {
 	GREP_NODE_OR
 };
 
+enum grep_pattern_type {
+	GREP_PATTERN_TYPE_UNSPECIFIED = 0,
+	GREP_PATTERN_TYPE_BRE,
+	GREP_PATTERN_TYPE_ERE,
+	GREP_PATTERN_TYPE_FIXED,
+	GREP_PATTERN_TYPE_PCRE
+};
+
 struct grep_expr {
 	enum grep_expr_node node;
 	unsigned hit;
@@ -89,11 +102,13 @@ struct grep_opt {
 	int word_regexp;
 	int fixed;
 	int all_match;
+	int debug;
 #define GREP_BINARY_DEFAULT	0
 #define GREP_BINARY_NOMATCH	1
 #define GREP_BINARY_TEXT	2
 	int binary;
 	int extended;
+	int use_reflog_filter;
 	int pcre;
 	int relative;
 	int pathname;
@@ -102,6 +117,8 @@ struct grep_opt {
 	int max_depth;
 	int funcname;
 	int funcbody;
+	int extended_regexp_option;
+	int pattern_type_option;
 	char color_context[COLOR_MAXLEN];
 	char color_filename[COLOR_MAXLEN];
 	char color_function[COLOR_MAXLEN];
@@ -116,19 +133,51 @@ struct grep_opt {
 	int show_hunk_mark;
 	int file_break;
 	int heading;
-	int use_threads;
 	void *priv;
 
 	void (*output)(struct grep_opt *opt, const void *data, size_t size);
 	void *output_priv;
 };
 
+extern void init_grep_defaults(void);
+extern int grep_config(const char *var, const char *value, void *);
+extern void grep_init(struct grep_opt *, const char *prefix);
+void grep_set_pattern_type_option(enum grep_pattern_type, struct grep_opt *opt);
+void grep_commit_pattern_type(enum grep_pattern_type, struct grep_opt *opt);
+
 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);
 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);
+extern int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size);
+
+struct grep_source {
+	char *name;
+
+	enum grep_source_type {
+		GREP_SOURCE_SHA1,
+		GREP_SOURCE_FILE,
+		GREP_SOURCE_BUF,
+	} type;
+	void *identifier;
+
+	char *buf;
+	unsigned long size;
+
+	char *path; /* for attribute lookups */
+	struct userdiff_driver *driver;
+};
+
+void grep_source_init(struct grep_source *gs, enum grep_source_type type,
+		      const char *name, const char *path,
+		      const void *identifier);
+void grep_source_clear_data(struct grep_source *gs);
+void grep_source_clear(struct grep_source *gs);
+void grep_source_load_driver(struct grep_source *gs);
+
+
+int grep_source(struct grep_opt *opt, struct grep_source *gs);
 
 extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
 extern int grep_threads_ok(const struct grep_opt *opt);
@@ -138,7 +187,25 @@ extern int grep_threads_ok(const struct grep_opt *opt);
  * Mutex used around access to the attributes machinery if
  * opt->use_threads.  Must be initialized/destroyed by callers!
  */
+extern int grep_use_locks;
 extern pthread_mutex_t grep_attr_mutex;
+extern pthread_mutex_t grep_read_mutex;
+
+static inline void grep_read_lock(void)
+{
+	if (grep_use_locks)
+		pthread_mutex_lock(&grep_read_mutex);
+}
+
+static inline void grep_read_unlock(void)
+{
+	if (grep_use_locks)
+		pthread_mutex_unlock(&grep_read_mutex);
+}
+
+#else
+#define grep_read_lock()
+#define grep_read_unlock()
 #endif
 
 #endif