view mercurial/mpatch.h @ 32736:173f1bdc322d

bookmarks: rely on exception for malformed lines

Since we already have an exception context open, for other thing, we can
simplify the code a bit and rely on exception handling for invalid lines.

Speed is not the main motivation for this changes. However as I'm in the middle
of benchmarking things we can see a small positive impact.

Before:
! wall 0.009358 comb 0.000000 user 0.000000 sys 0.000000 (best of 303)

After:
! wall 0.009173 comb 0.010000 user 0.010000 sys 0.000000 (best of 310)

#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