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/* Copyright 2015 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#pragma once
#include <cstring>
#include "mongo/base/data_type.h"
namespace mongo {
template <>
struct DataType::Handler<StringData> {
static Status load(StringData* sdata,
const char* ptr,
size_t length,
size_t* advanced,
std::ptrdiff_t debug_offset) {
if (sdata) {
*sdata = StringData(ptr, length);
}
if (advanced) {
*advanced = length;
}
return Status::OK();
}
static Status store(const StringData& sdata,
char* ptr,
size_t length,
size_t* advanced,
std::ptrdiff_t debug_offset) {
if (sdata.size() > length) {
return makeStoreStatus(sdata, length, debug_offset);
}
if (ptr) {
std::memcpy(ptr, sdata.rawData(), sdata.size());
}
if (advanced) {
*advanced = sdata.size();
}
return Status::OK();
}
static StringData defaultConstruct() {
return StringData();
}
private:
static Status makeStoreStatus(const StringData& sdata,
size_t length,
std::ptrdiff_t debug_offset);
};
} // namespace mongo
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