[git/git.git] / diffcore.h

/*
 * Copyright (C) 2005 Junio C Hamano
 */
#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

struct diff_filespec {
	unsigned char sha1[20];
	char *path;
	void *data;
	unsigned long size;
	int xfrm_flags;		 /* for use by the xfrm */
	unsigned short mode;	 /* file mode */
	unsigned sha1_valid : 1; /* if true, use sha1 and trust mode;
				  * if false, use the name and read from
				  * the filesystem.
				  */
	unsigned file_valid : 1; /* if false the file does not exist */
	unsigned should_free : 1; /* data should be free()'ed */
	unsigned should_munmap : 1; /* data should be munmap()'ed */
};

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 void diff_free_filespec_data(struct diff_filespec *);

struct diff_file_pair {
	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 */
};

struct diff_queue_struct {
	struct diff_file_pair **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);

#endif
Commit	Line	Data
427dcb4b JH	1	/*
	2	* Copyright (C) 2005 Junio C Hamano
	3	*/
	4	#ifndef _DIFFCORE_H_
	5	#define _DIFFCORE_H_
	6
	7	/* This header file is internal between diff.c and its diff transformers
	8	* (e.g. diffcore-rename, diffcore-pickaxe). Never include this header
	9	* in anything else.
	10	*/
	11	#define MAX_SCORE 10000
	12	#define DEFAULT_MINIMUM_SCORE 5000
	13
	14	#define RENAME_DST_MATCHED 01
	15	#define RENAME_SRC_GONE 02
	16	#define RENAME_SCORE_SHIFT 8
	17
	18	struct diff_filespec {
	19	unsigned char sha1[20];
	20	char *path;
	21	void *data;
	22	unsigned long size;
	23	int xfrm_flags; /* for use by the xfrm */
	24	unsigned short mode; /* file mode */
	25	unsigned sha1_valid : 1; /* if true, use sha1 and trust mode;
	26	* if false, use the name and read from
	27	* the filesystem.
	28	*/
	29	unsigned file_valid : 1; /* if false the file does not exist */
	30	unsigned should_free : 1; /* data should be free()'ed */
	31	unsigned should_munmap : 1; /* data should be munmap()'ed */
	32	};
	33
	34	extern struct diff_filespec alloc_filespec(const char );
	35	extern void fill_filespec(struct diff_filespec , const unsigned char ,
	36	unsigned short);
	37
	38	extern int diff_populate_filespec(struct diff_filespec *);
	39	extern void diff_free_filespec_data(struct diff_filespec *);
	40
	41	struct diff_file_pair {
	42	struct diff_filespec *one;
	43	struct diff_filespec *two;
	44	char *xfrm_msg;
	45	int orig_order; /* the original order of insertion into the queue */
	46	int xfrm_work; /* for use by tramsformers, not by diffcore */
	47	};
	48
	49	struct diff_queue_struct {
	50	struct diff_file_pair **queue;
	51	int alloc;
	52	int nr;
	53	};
	54
	55	extern struct diff_file_pair diff_queue(struct diff_queue_struct ,
	56	struct diff_filespec *,
	57	struct diff_filespec *);
	58	extern void diff_detect_rename(struct diff_queue_struct *, int, int);
	59
	60	#endif