view mercurial/bdiff.h @ 34305:0e48813cc106

alias: test duplicated definition earlier

This patch moves the old definition checking logic introduced by
f4b7be3f8430 earlier. So that the test itself does not depend on `aliasdef`.

The check is to avoid wrapping a same alias multiple times. It can be done
by checking the config name and value (`definition` in code), without
constructing a `cmdalias` instance.

This makes the next patch easier to review.

Differential Revision: https://phab.mercurial-scm.org/D804

#ifndef _HG_BDIFF_H_
#define _HG_BDIFF_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