view mercurial/bdiff.h @ 48722:92b5a2c4d637

revlog: split revlog v1 and revlog v2 handling

Explicitly splitting their fields packing and unpacking makes it easier to
extend the existing C implemenation to handle the new changelog format, whose
fields and offsets are not simply a superset of the revlog.

Differential Revision: https://phab.mercurial-scm.org/D12137

#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