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// Copyright (c) 2012 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include <cstdio>
#include "leveldb/dumpfile.h"
#include "leveldb/env.h"
#include "leveldb/status.h"
namespace leveldb {
namespace {
class StdoutPrinter : public WritableFile {
public:
Status Append(const Slice& data) override {
fwrite(data.data(), 1, data.size(), stdout);
return Status::OK();
}
Status Close() override { return Status::OK(); }
Status Flush() override { return Status::OK(); }
Status Sync() override { return Status::OK(); }
};
bool HandleDumpCommand(Env* env, char** files, int num) {
StdoutPrinter printer;
bool ok = true;
for (int i = 0; i < num; i++) {
Status s = DumpFile(env, files[i], &printer);
if (!s.ok()) {
std::fprintf(stderr, "%s\n", s.ToString().c_str());
ok = false;
}
}
return ok;
}
} // namespace
} // namespace leveldb
static void Usage() {
std::fprintf(
stderr,
"Usage: leveldbutil command...\n"
" dump files... -- dump contents of specified files\n");
}
int main(int argc, char** argv) {
leveldb::Env* env = leveldb::Env::Default();
bool ok = true;
if (argc < 2) {
Usage();
ok = false;
} else {
std::string command = argv[1];
if (command == "dump") {
ok = leveldb::HandleDumpCommand(env, argv + 2, argc - 2);
} else {
Usage();
ok = false;
}
}
return (ok ? 0 : 1);
}
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