view mercurial/bdiff.h @ 38982:037debbf869c

changegroup: pass sorted revisions into group() (API)

Currently, group() receives a list of nodes and calls _sortgroup()
to sort them and turn them into revs. Since the sorting behavior
varies depending on the type of data being transferred, I think it
makes sense to perform the sorting before group() is invoked.

This commit extracts _sortgroup() to a pair of standalone functions.
It then moves the calling of these functions to the 3 call sites of
group(). group() now receives an iterable of revs instead of nodes.

Differential Revision: https://phab.mercurial-scm.org/D4139

#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