mercurial/mpatch.h

fileset: add "tracked()" to explicitly select files in the revision

I'm going to rewrite filesets to be match predicates, which means basic
patterns such as '*' will no longer be "closed" to the subset constructed
from the ctx.

Good thing is that 'hg status "set:not binary()"' can include unknown files
out of the box, and fileset computation will likely to be faster as we won't
have to walk dirstate twice, for example. Bad thing is that we can't select
files at a certain revision by 'set:revs(REV, **)' since '**' is "open" to
any paths. So, this patch introduces "tracked()" as a replacement for the '**'
in the example above.

#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