view mercurial/mpatch.h @ 42970:1ad3ebb39c61

merge: replace magic strings with NAMED_CONSTANTS (API)

.. api::

    `mercurial.hg.update*` and `mercurial.merge.update` now expect a value
    from a set of NAMED_CONSTANTS (`merge.UPDATECHECK_*` constants)
    rather than a collection of magic strings. As of now, the values
    are the same, but code should be prepared for these values to
    change in the future.

Differential Revision: https://phab.mercurial-scm.org/D6877

#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