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/*
* libpinyin
* Library to deal with pinyin.
*
* Copyright (C) 2016 Peng Wu <alexepico@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef KYOTODB_UTILS_H
#define KYOTODB_UTILS_H
#include <assert.h>
#include <kchashdb.h>
#include <kcprotodb.h>
using namespace kyotocabinet;
namespace pinyin{
inline uint32_t attach_options(guint32 flags) {
uint32_t mode = 0;
if (flags & ATTACH_READONLY)
mode |= BasicDB::OREADER;
if (flags & ATTACH_READWRITE) {
assert( !( flags & ATTACH_READONLY ) );
mode |= BasicDB::OREADER | BasicDB::OWRITER;
}
if (flags & ATTACH_CREATE)
mode |= BasicDB::OCREATE;
return mode;
}
/* Use DB::visitor. */
/* Kyoto Cabinet requires non-NULL pointer for zero length value. */
static const char * empty_vbuf = (char *)UINTPTR_MAX;
class CopyVisitor : public DB::Visitor {
private:
BasicDB * m_db;
public:
CopyVisitor(BasicDB * db) {
m_db = db;
}
virtual const char* visit_full(const char* kbuf, size_t ksiz,
const char* vbuf, size_t vsiz, size_t* sp) {
m_db->set(kbuf, ksiz, vbuf, vsiz);
return NOP;
}
virtual const char* visit_empty(const char* kbuf, size_t ksiz, size_t* sp) {
m_db->set(kbuf, ksiz, empty_vbuf, 0);
return NOP;
}
};
};
#endif
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