mercurial/mpatch.h

mergetools: add BeyondCompare 4 for Windows

This is a copy of the TortoiseHg configuration, but dropping the 3-way diff and
dirdiff settings (since those aren't supported in core Mercurial), and swapping
the 'parent1', 'parent2', and 'base' literals for `$labellocal`, `$labelother,
and `$labelbase` respectively.  (That functionality was apparently never ported
to TortoiseHg.)

Additionally, the single quotes were removed from around these arguments, since
none of the other configs have them.

Differential Revision: https://phab.mercurial-scm.org/D9635

#ifndef _HG_MPATCH_H_
#define _HG_MPATCH_H_

#define MPATCH_ERR_NO_MEM -3
#define MPATCH_ERR_CANNOT_BE_DECODED -2
#define MPATCH_ERR_INVALID_PATCH -1

struct mpatch_frag {
	int start, end, len;
	const char *data;
};

struct mpatch_flist {
	struct mpatch_frag *base, *head, *tail;
};

int mpatch_decode(const char *bin, ssize_t len, struct mpatch_flist **res);
ssize_t mpatch_calcsize(ssize_t len, struct mpatch_flist *l);
void mpatch_lfree(struct mpatch_flist *a);
int mpatch_apply(char *buf, const char *orig, ssize_t len,
                 struct mpatch_flist *l);
struct mpatch_flist *
mpatch_fold(void *bins, struct mpatch_flist *(*get_next_item)(void *, ssize_t),
            ssize_t start, ssize_t end);

#endif