/* This software was written by Dirk Engling <erdgeist@erdgeist.org>
   It is considered beerware. Prost. Skol. Cheers or whatever.

   $id$ */

#ifndef OT_SCAN_H__
#define OT_SCAN_H__

#include <stddef.h>
#include <stddef.h>
#include <stdint.h>

/* Read an unsigned decimal number from src into dest and return how many
   characters were consumed. Returns zero and leaves dest untouched when src
   does not begin with a digit, or when the value would exceed max. */
size_t scan_uint(const char *src, uint64_t *dest, uint64_t max);

/* As scan_uint, but following the bencode integer grammar, which permits a
   leading zero on zero alone. */
size_t scan_uint_bencode(const char *src, uint64_t *dest, uint64_t max);

/* Read a signed decimal number that has to take up exactly len characters,
   which is how a value lifted out of a query string arrives. Returns 0, or
   -1 leaving dest untouched. */
int    scan_int(const char *src, size_t len, int64_t *dest);

#endif