/*
* Copyright (C) 2005 Junio C Hamano
*/
-#ifndef _DIFFCORE_H_
-#define _DIFFCORE_H_
+#ifndef DIFFCORE_H
+#define DIFFCORE_H
/* This header file is internal between diff.c and its diff transformers
* (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 */
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_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;
+ unsigned renamed_pair : 1;
+ unsigned is_unmerged : 1;
};
+#define DIFF_PAIR_UNMERGED(p) ((p)->is_unmerged)
+
+#define DIFF_PAIR_RENAME(p) ((p)->renamed_pair)
+
+#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_filepair **queue;
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