view mercurial/bdiff.h @ 50301:9fc0d244a753 stable

dirstate: fix a potential traceback when in `copy` and `rename`

Before this changes, calling `hg copy` or `hg rename` could trigger a traceback
about using an invalidated dirstate. This wasn't caught by the test as it needed
the blackbox extension to preload the dirstate first in a way "refresh"
invalidates it.

Changing the context creation patterns fixes it.

#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