view mercurial/bdiff.h @ 34295:fc3b8483c6cb

copytrace: use the full copytracing method if only drafts are involved

This patch adds the functionality to use the full copytracing even if
`experimental.copytrace = heuristics` in cases when drafts are involved.

This is also a part of copytrace extension in fbext.

This also adds tests which are also taken from fbext.

.. feature::

   The `heuristics` option for `experimental.copytrace` performs full
   copytracing if both source and destination branches contains non-public
   changsets only.

Differential Revision: https://phab.mercurial-scm.org/D625

#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