view mercurial/mpatch.h @ 46288:61f8fc12e167

shelve: don't include invalid shelves in `hg shelve --list`

Before this patch, if a shelved change is missing its `.hg` file, we
still list it in `hg shelve --list`, but then `hg unshelve`
crashes. This patch makes it so we only list valid shelved changes.

This patch means that users who do `touch .hg/shelve/buy-milk.patch`
as a form of TODO list will no longer see their TODO items in `hg
shelve --list`.

Differential Revision: https://phab.mercurial-scm.org/D9719

#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