view mercurial/bdiff.h @ 36612:e89959970a08

wireproto: don't expose changegroupsubset capability if not available

We just marked the changegroupsubset command as only available to
version 1 of the wire transports. There is a capability of the same
name of the command that indicates if the command is supported.

This commit teaches the capabilities code to conditionally emit that
capability depending on whether the command is available for the
current transport.

Most test output is reordering of capabilities. But the limited tests
for version 2 of the SSH protocol do show the capability disappearing.

Differential Revision: https://phab.mercurial-scm.org/D2486

#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