mercurial/bdiff.h

context: remove assumptions about manifest creation during _buildstatus

Previously we called self.manifest() in some cases to preload the
first manifest. This relied on the assumption that the later
_manifestmatches() call did not duplicate any work the original
self.manifest() call did. Let's remove that assumption, since it bit
me during my refactors of this area and is easy to remove.

#ifndef _HG_BDIFF_H_
#define _HG_BDIFF_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