annotate mercurial/bdiff.h @ 40940:120ecb17242b stable

windows: ensure pure posixfile fd doesn't escape by entering context manager

There are tests in test-revlog-mmapindex.t and test-rebase-mq-skip.t that are
fixed by this, but we usually don't use --pure on Windows.  For whatever reason,
the remaining --pure failures are various errors like  $ENOTDIR$ and "Access is
denied" have a trailing '.'.

#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