view mercurial/mpatch.h @ 30801:67ee7874e53b

revset: factor out getinteger() helper

We have 4 revset functions that take integer arguments, and they handle
their arguments in slightly different ways. This patch unifies them:

 - getstring() in place of getsymbol(), which is more consistent with the
   handling of integer revisions (both 1 and '1' are valid)
 - say "expects" instead of "requires" for type errors

We don't need to catch TypeError since getstring() must return a string.

#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