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/*-
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
/*
* __wt_config_concat --
* Given a NULL-terminated list of configuration strings, concatenate them
* into newly allocated memory. Nothing special is assumed about any of
* the config strings, they are simply combined in order.
*
* This code deals with the case where some of the config strings are
* wrapped in brackets but others aren't: the resulting string does not
* have brackets.
*/
int
__wt_config_concat(
WT_SESSION_IMPL *session, const char **cfg, char **config_ret)
{
WT_CONFIG cparser;
WT_CONFIG_ITEM k, v;
WT_DECL_ITEM(tmp);
WT_DECL_RET;
const char **cp;
WT_RET(__wt_scr_alloc(session, 0, &tmp));
for (cp = cfg; *cp != NULL; ++cp) {
WT_ERR(__wt_config_init(session, &cparser, *cp));
while ((ret = __wt_config_next(&cparser, &k, &v)) == 0) {
if (k.type != WT_CONFIG_ITEM_STRING &&
k.type != WT_CONFIG_ITEM_ID)
WT_ERR_MSG(session, EINVAL,
"Invalid configuration key found: '%s'\n",
k.str);
/* Include the quotes around string keys/values. */
if (k.type == WT_CONFIG_ITEM_STRING) {
--k.str;
k.len += 2;
}
if (v.type == WT_CONFIG_ITEM_STRING) {
--v.str;
v.len += 2;
}
WT_ERR(__wt_buf_catfmt(session, tmp, "%.*s%s%.*s,",
(int)k.len, k.str,
(v.len > 0) ? "=" : "",
(int)v.len, v.str));
}
if (ret != WT_NOTFOUND)
goto err;
}
/*
* If the caller passes us no valid configuration strings, we get here
* with no bytes to copy -- that's OK, the underlying string copy can
* handle empty strings.
*
* Strip any trailing comma.
*/
if (tmp->size != 0)
--tmp->size;
ret = __wt_strndup(session, tmp->data, tmp->size, config_ret);
err: __wt_scr_free(&tmp);
return (ret);
}
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