view mercurial/bdiff.h @ 42454:0eb8c61c306b

tests: show how the dirstate can end up containing wrong information

which can result in bad status output.

Concretely, this seems to be easily triggered by having a build system
watching the filesystem for changes, and rebuilding files that are
both tracked and generated while an update is happening.

Differential Revision: https://phab.mercurial-scm.org/D6474

#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