view mercurial/bdiff.h @ 39123:4d7b11877dd0

filemerge: add the function to examine a capability of a internal tool

For "symlink" and "binary" capabilities, _toolbool() can not examine
these of internal merge tools strictly, because it examines only
configurations in "merge-tools" section.

Users can configure them explicitly as below for example, but this is
not ordinary usage and not convenient:

  [merge-tools]
  :other.symlink = true
  :other.binary = true

This patch adds hascapability() internal function, which can examine
actual capabilities of a internal merge tool strictly.

At this patch, hascapability() is still used with "strict=False".
Subsequent patches use it with "strict=True".

#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