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-rw-r--r--src/arrow/cpp/tools/parquet/parquet_dump_schema.cc52
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
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+++ b/src/arrow/cpp/tools/parquet/parquet_dump_schema.cc
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+// 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;
+}