mercurial/bdiff.h

largefiles: link the core dirstate._changing context to the lfdirstate one

This will be much cleaner and safer to make sure the two dirstates are in sync.

This way, the large-files dirstate will simply inherit the state of the main
dirstate, so if the core code does the right thing, the large-files code should
be right too.

#ifndef HG_BDIFF_H
#define HG_BDIFF_H

#include "compat.h"

struct bdiff_line {
	int hash, n, e;
	ssize_t len;
	const char *l;
};

struct bdiff_hunk;
struct bdiff_hunk {
	int a1, a2, b1, b2;
	struct bdiff_hunk *next;
};

int bdiff_splitlines(const char *a, ssize_t len, struct bdiff_line **lr);
int bdiff_diff(struct bdiff_line *a, int an, struct bdiff_line *b, int bn,
               struct bdiff_hunk *base);
void bdiff_freehunks(struct bdiff_hunk *l);

#endif