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/*-
* Public Domain 2014-2019 MongoDB, Inc.
* Public Domain 2008-2014 WiredTiger, Inc.
*
* This is free and unencumbered software released into the public domain.
*
* Anyone is free to copy, modify, publish, use, compile, sell, or
* distribute this software, either in source code form or as a compiled
* binary, for any purpose, commercial or non-commercial, and by any
* means.
*
* In jurisdictions that recognize copyright laws, the author or authors
* of this software dedicate any and all copyright interest in the
* software to the public domain. We make this dedication for the benefit
* of the public at large and to the detriment of our heirs and
* successors. We intend this dedication to be an overt act of
* relinquishment in perpetuity of all present and future rights to this
* software under copyright law.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* ex_config_parse.c
* This is an example demonstrating how to parse WiredTiger compatible
* configuration strings.
*/
#include <test_util.h>
int
main(int argc, char *argv[])
{
int ret;
(void)argc; /* Unused variable */
(void)testutil_set_progname(argv);
{
/*! [Create a configuration parser] */
WT_CONFIG_ITEM k, v;
WT_CONFIG_PARSER *parser;
const char *config_string =
"path=/dev/loop,page_size=1024,log=(archive=true,file_max=20MB)";
error_check(
wiredtiger_config_parser_open(NULL, config_string, strlen(config_string), &parser));
error_check(parser->close(parser));
/*! [Create a configuration parser] */
error_check(
wiredtiger_config_parser_open(NULL, config_string, strlen(config_string), &parser));
{
/*! [get] */
int64_t my_page_size;
/*
* Retrieve the value of the integer configuration string "page_size".
*/
error_check(parser->get(parser, "page_size", &v));
my_page_size = v.val;
/*! [get] */
error_check(parser->close(parser));
(void)my_page_size; /* Unused variable */
}
{
error_check(
wiredtiger_config_parser_open(NULL, config_string, strlen(config_string), &parser));
/*! [next] */
/*
* Retrieve and print the values of the configuration strings.
*/
while ((ret = parser->next(parser, &k, &v)) == 0) {
printf("%.*s:", (int)k.len, k.str);
if (v.type == WT_CONFIG_ITEM_NUM)
printf("%" PRId64 "\n", v.val);
else
printf("%.*s\n", (int)v.len, v.str);
}
scan_end_check(ret == WT_NOTFOUND);
/*! [next] */
error_check(parser->close(parser));
}
error_check(
wiredtiger_config_parser_open(NULL, config_string, strlen(config_string), &parser));
/*! [nested get] */
/*
* Retrieve the value of the nested log file_max configuration string using dot shorthand.
* Utilize the configuration parsing automatic conversion of value strings into an integer.
*/
v.type = WT_CONFIG_ITEM_NUM;
error_check(parser->get(parser, "log.file_max", &v));
printf("log file max: %" PRId64 "\n", v.val);
/*! [nested get] */
error_check(parser->close(parser));
error_check(
wiredtiger_config_parser_open(NULL, config_string, strlen(config_string), &parser));
/*! [nested traverse] */
{
WT_CONFIG_PARSER *sub_parser;
while ((ret = parser->next(parser, &k, &v)) == 0) {
if (v.type == WT_CONFIG_ITEM_STRUCT) {
printf("Found nested configuration: %.*s\n", (int)k.len, k.str);
error_check(wiredtiger_config_parser_open(NULL, v.str, v.len, &sub_parser));
while ((ret = sub_parser->next(sub_parser, &k, &v)) == 0)
printf("\t%.*s\n", (int)k.len, k.str);
scan_end_check(ret == WT_NOTFOUND);
error_check(sub_parser->close(sub_parser));
}
}
scan_end_check(ret == WT_NOTFOUND);
/*! [nested traverse] */
error_check(parser->close(parser));
}
}
return (EXIT_SUCCESS);
}
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