X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=diffcore.h;h=73c7842cc7fd907519016b936a96b6f08cd80b47;hb=cb115748ec0d4c6faccd09f3637ea436482dd7d5;hp=5fa7067603cca050ed1f7c732ae43b74f32202cb;hpb=427dcb4bca49117664d9428fd4e86483f516d703;p=git.git

diff --git a/diffcore.h b/diffcore.h
index 5fa70676..73c7842c 100644
--- a/diffcore.h
+++ b/diffcore.h
@@ -8,17 +8,25 @@
  * (e.g. diffcore-rename, diffcore-pickaxe).  Never include this header
  * in anything else.
  */
-#define MAX_SCORE 10000
-#define DEFAULT_MINIMUM_SCORE 5000
 
-#define RENAME_DST_MATCHED 01
-#define RENAME_SRC_GONE    02
-#define RENAME_SCORE_SHIFT 8
+/* We internally use unsigned short as the score value,
+ * and rely on an int capable to hold 32-bits.  -B can take
+ * -Bmerge_score/break_score format and the two scores are
+ * passed around in one int (high 16-bit for merge and low 16-bit
+ * for break).
+ */
+#define MAX_SCORE 60000.0
+#define DEFAULT_RENAME_SCORE 30000 /* rename/copy similarity minimum (50%) */
+#define DEFAULT_BREAK_SCORE  30000 /* minimum for break to happen (50%) */
+#define DEFAULT_MERGE_SCORE  36000 /* maximum for break-merge to happen 60%) */
+
+#define MINIMUM_BREAK_SIZE     400 /* do not break a file smaller than this */
 
 struct diff_filespec {
 	unsigned char sha1[20];
 	char *path;
 	void *data;
+	void *cnt_data;
 	unsigned long size;
 	int xfrm_flags;		 /* for use by the xfrm */
 	unsigned short mode;	 /* file mode */
@@ -26,7 +34,7 @@ struct diff_filespec {
 				  * if false, use the name and read from
 				  * the filesystem.
 				  */
-	unsigned file_valid : 1; /* if false the file does not exist */
+#define DIFF_FILE_VALID(spec) (((spec)->mode) != 0)
 	unsigned should_free : 1; /* data should be free()'ed */
 	unsigned should_munmap : 1; /* data should be munmap()'ed */
 };
@@ -35,26 +43,71 @@ extern struct diff_filespec *alloc_filespec(const char *);
 extern void fill_filespec(struct diff_filespec *, const unsigned char *,
 			  unsigned short);
 
-extern int diff_populate_filespec(struct diff_filespec *);
+extern int diff_populate_filespec(struct diff_filespec *, int);
 extern void diff_free_filespec_data(struct diff_filespec *);
 
-struct diff_file_pair {
+struct diff_filepair {
 	struct diff_filespec *one;
 	struct diff_filespec *two;
-	char *xfrm_msg;
-	int orig_order; /* the original order of insertion into the queue */
-	int xfrm_work; /* for use by tramsformers, not by diffcore */
+	unsigned short int score;
+	char status; /* M C R N D U (see Documentation/diff-format.txt) */
+	unsigned source_stays : 1; /* all of R/C are copies */
+	unsigned broken_pair : 1;
 };
+#define DIFF_PAIR_UNMERGED(p) \
+	(!DIFF_FILE_VALID((p)->one) && !DIFF_FILE_VALID((p)->two))
+
+#define DIFF_PAIR_RENAME(p) (strcmp((p)->one->path, (p)->two->path))
+
+#define DIFF_PAIR_BROKEN(p) \
+	( (!DIFF_FILE_VALID((p)->one) != !DIFF_FILE_VALID((p)->two)) && \
+	  ((p)->broken_pair != 0) )
+
+#define DIFF_PAIR_TYPE_CHANGED(p) \
+	((S_IFMT & (p)->one->mode) != (S_IFMT & (p)->two->mode))
+
+#define DIFF_PAIR_MODE_CHANGED(p) ((p)->one->mode != (p)->two->mode)
+
+extern void diff_free_filepair(struct diff_filepair *);
+
+extern int diff_unmodified_pair(struct diff_filepair *);
 
 struct diff_queue_struct {
-	struct diff_file_pair **queue;
+	struct diff_filepair **queue;
 	int alloc;
 	int nr;
 };
 
-extern struct diff_file_pair *diff_queue(struct diff_queue_struct *,
-					 struct diff_filespec *,
-					 struct diff_filespec *);
-extern void diff_detect_rename(struct diff_queue_struct *, int, int);
+extern struct diff_queue_struct diff_queued_diff;
+extern struct diff_filepair *diff_queue(struct diff_queue_struct *,
+					struct diff_filespec *,
+					struct diff_filespec *);
+extern void diff_q(struct diff_queue_struct *, struct diff_filepair *);
+
+extern void diffcore_pathspec(const char **pathspec);
+extern void diffcore_break(int);
+extern void diffcore_rename(struct diff_options *);
+extern void diffcore_merge_broken(void);
+extern void diffcore_pickaxe(const char *needle, int opts);
+extern void diffcore_order(const char *orderfile);
+
+#define DIFF_DEBUG 0
+#if DIFF_DEBUG
+void diff_debug_filespec(struct diff_filespec *, int, const char *);
+void diff_debug_filepair(const struct diff_filepair *, int);
+void diff_debug_queue(const char *, struct diff_queue_struct *);
+#else
+#define diff_debug_filespec(a,b,c) do {} while(0)
+#define diff_debug_filepair(a,b) do {} while(0)
+#define diff_debug_queue(a,b) do {} while(0)
+#endif
+
+extern int diffcore_count_changes(void *src, unsigned long src_size,
+				  void *dst, unsigned long dst_size,
+				  void **src_count_p,
+				  void **dst_count_p,
+				  unsigned long delta_limit,
+				  unsigned long *src_copied,
+				  unsigned long *literal_added);
 
 #endif