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/*-
* Copyright (c) 2008-2012 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
/*
* __wt_config_collapse --
* Given a NULL-terminated list of configuration strings, where the first
* one contains all the defaults, collapse them into a newly allocated
* buffer.
*/
int
__wt_config_collapse(WT_SESSION_IMPL *session,
const char **cfg, const char **config_ret)
{
WT_CONFIG cparser;
WT_CONFIG_ITEM k, v;
WT_ITEM buf;
int ret;
WT_CLEAR(buf);
WT_RET(__wt_config_init(session, &cparser, cfg[0]));
while ((ret = __wt_config_next(&cparser, &k, &v)) == 0) {
if (k.type != ITEM_STRING && k.type != ITEM_ID)
WT_RET_MSG(session, EINVAL,
"Invalid configuration key found: '%s'\n", k.str);
WT_ERR(__wt_config_get(session, cfg, &k, &v));
/* Include the quotes around string keys/values. */
if (k.type == ITEM_STRING) {
--k.str;
k.len += 2;
}
if (v.type == ITEM_STRING) {
--v.str;
v.len += 2;
}
WT_ERR(__wt_buf_catfmt(session, &buf, "%.*s=%.*s,",
(int)k.len, k.str, (int)v.len, v.str));
}
if (ret != WT_NOTFOUND)
goto err;
/*
* If the caller passes us no valid configuration strings, we end up
* here with no allocated memory to return. Check the final buffer
* size: empty configuration strings are possible, and paranoia is
* good.
*/
if (buf.size == 0)
WT_RET(__wt_buf_initsize(session, &buf, 1));
/* Strip the trailing comma and NUL-terminate */
((char *)buf.data)[buf.size - 1] = '\0';
*config_ret = buf.data;
return (0);
err: __wt_buf_free(session, &buf);
return (ret);
}
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