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/*-
* Copyright (c) 2014-2015 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
/*
* __wt_struct_check --
* Check that the specified packing format is valid, and whether it fits
* into a fixed-sized bitfield.
*/
int
__wt_struct_check(WT_SESSION_IMPL *session,
const char *fmt, size_t len, int *fixedp, uint32_t *fixed_lenp)
{
WT_DECL_PACK_VALUE(pv);
WT_DECL_RET;
WT_PACK pack;
int fields;
WT_RET(__pack_initn(session, &pack, fmt, len));
for (fields = 0; (ret = __pack_next(&pack, &pv)) == 0; fields++)
;
if (ret != WT_NOTFOUND)
return (ret);
if (fixedp != NULL && fixed_lenp != NULL) {
if (fields == 0) {
*fixedp = 1;
*fixed_lenp = 0;
} else if (fields == 1 && pv.type == 't') {
*fixedp = 1;
*fixed_lenp = pv.size;
} else
*fixedp = 0;
}
return (0);
}
/*
* __wt_struct_size --
* Calculate the size of a packed byte string.
*/
int
__wt_struct_size(WT_SESSION_IMPL *session, size_t *sizep, const char *fmt, ...)
{
WT_DECL_RET;
va_list ap;
va_start(ap, fmt);
ret = __wt_struct_sizev(session, sizep, fmt, ap);
va_end(ap);
return (ret);
}
/*
* __wt_struct_pack --
* Pack a byte string.
*/
int
__wt_struct_pack(WT_SESSION_IMPL *session,
void *buffer, size_t size, const char *fmt, ...)
{
WT_DECL_RET;
va_list ap;
va_start(ap, fmt);
ret = __wt_struct_packv(session, buffer, size, fmt, ap);
va_end(ap);
return (ret);
}
/*
* __wt_struct_unpack --
* Unpack a byte string.
*/
int
__wt_struct_unpack(WT_SESSION_IMPL *session,
const void *buffer, size_t size, const char *fmt, ...)
{
WT_DECL_RET;
va_list ap;
va_start(ap, fmt);
ret = __wt_struct_unpackv(session, buffer, size, fmt, ap);
va_end(ap);
return (ret);
}
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