diff options
Diffstat (limited to 'src/arrow/cpp/tools/parquet/parquet_dump_schema.cc')
-rw-r--r-- | src/arrow/cpp/tools/parquet/parquet_dump_schema.cc | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/arrow/cpp/tools/parquet/parquet_dump_schema.cc b/src/arrow/cpp/tools/parquet/parquet_dump_schema.cc new file mode 100644 index 000000000..0d7c2428f --- /dev/null +++ b/src/arrow/cpp/tools/parquet/parquet_dump_schema.cc @@ -0,0 +1,52 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +#include <iostream> + +#include "parquet/api/reader.h" +#include "parquet/api/schema.h" + +int main(int argc, char** argv) { + bool help_flag = false; + std::string filename; + + for (int i = 1; i < argc; i++) { + if (!std::strcmp(argv[i], "-?") || !std::strcmp(argv[i], "-h") || + !std::strcmp(argv[i], "--help")) { + help_flag = true; + } else { + filename = argv[i]; + } + } + + if (argc != 2 || help_flag) { + std::cerr << "Usage: parquet-dump-schema [-h] [--help]" + << " <filename>" << std::endl; + return -1; + } + + try { + std::unique_ptr<parquet::ParquetFileReader> reader = + parquet::ParquetFileReader::OpenFile(filename); + PrintSchema(reader->metadata()->schema()->schema_root().get(), std::cout); + } catch (const std::exception& e) { + std::cerr << "Parquet error: " << e.what() << std::endl; + return -1; + } + + return 0; +} |