| /** |
| * 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 "orc/orc-config.hh" |
| #include "orc/ColumnPrinter.hh" |
| #include "orc/Exceptions.hh" |
| |
| #include <memory> |
| #include <string> |
| #include <iostream> |
| #include <string> |
| |
| void printContents(const char* filename, const orc::RowReaderOptions& rowReaderOpts) { |
| orc::ReaderOptions readerOpts; |
| std::unique_ptr<orc::Reader> reader; |
| std::unique_ptr<orc::RowReader> rowReader; |
| reader = orc::createReader(orc::readFile(std::string(filename)), readerOpts); |
| rowReader = reader->createRowReader(rowReaderOpts); |
| |
| std::unique_ptr<orc::ColumnVectorBatch> batch = rowReader->createRowBatch(1000); |
| std::string line; |
| std::unique_ptr<orc::ColumnPrinter> printer = |
| createColumnPrinter(line, &rowReader->getSelectedType()); |
| |
| while (rowReader->next(*batch)) { |
| printer->reset(*batch); |
| for(unsigned long i=0; i < batch->numElements; ++i) { |
| line.clear(); |
| printer->printRow(i); |
| line += "\n"; |
| const char* str = line.c_str(); |
| fwrite(str, 1, strlen(str), stdout); |
| } |
| } |
| } |
| |
| int main(int argc, char* argv[]) { |
| if (argc < 2) { |
| std::cout << "Usage: orc-contents <filename> [--columns=1,2,...]\n" |
| << "Print contents of <filename>.\n" |
| << "If columns are specified, only these top-level (logical) columns are printed.\n" ; |
| return 1; |
| } |
| try { |
| const std::string COLUMNS_PREFIX = "--columns="; |
| std::list<uint64_t> cols; |
| char* filename = ORC_NULLPTR; |
| |
| // Read command-line options |
| char *param, *value; |
| for (int i = 1; i < argc; i++) { |
| if ( (param = std::strstr(argv[i], COLUMNS_PREFIX.c_str())) ) { |
| value = std::strtok(param+COLUMNS_PREFIX.length(), "," ); |
| while (value) { |
| cols.push_back(static_cast<uint64_t>(std::atoi(value))); |
| value = std::strtok(ORC_NULLPTR, "," ); |
| } |
| } else { |
| filename = argv[i]; |
| } |
| } |
| orc::RowReaderOptions rowReaderOpts; |
| if (cols.size() > 0) { |
| rowReaderOpts.include(cols); |
| } |
| if (filename != ORC_NULLPTR) { |
| printContents(filename, rowReaderOpts); |
| } |
| } catch (std::exception& ex) { |
| std::cerr << "Caught exception: " << ex.what() << "\n"; |
| return 1; |
| } |
| return 0; |
| } |