#ifndef DIFFCORE_H

#define DIFFCORE_H

#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 userdiff_driver;

struct diff_filespec {

};

extern struct diff_filespec *alloc_filespec(const char *);

extern void free_filespec(struct diff_filespec *);

extern void fill_filespec(struct diff_filespec *, const unsigned char *,

unsigned short);

extern int diff_populate_filespec(struct diff_filespec *, int);

extern void diff_free_filespec_data(struct diff_filespec *);

extern void diff_free_filespec_blob(struct diff_filespec *);

extern int diff_filespec_is_binary(struct diff_filespec *);

struct diff_filepair {

};

#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 {

};

#define DIFF_QUEUE_CLEAR(q) \

do { \

(q)->queue = NULL; \

(q)->nr = (q)->alloc = 0; \

} while (0)

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_break(int);

extern void diffcore_rename(struct diff_options *);

extern void diffcore_merge_broken(void);

extern void diffcore_pickaxe(struct diff_options *);

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 *);

#define diff_debug_filespec(a,b,c) do { /* nothing */ } while (0)

#define diff_debug_filepair(a,b) do { /* nothing */ } while (0)

#define diff_debug_queue(a,b) do { /* nothing */ } while (0)

extern int diffcore_count_changes(struct diff_filespec *src,

unsigned long *literal_added);