| /** |
| * 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 "Adaptor.hh" |
| #include "orc/OrcFile.hh" |
| #include "orc/Exceptions.hh" |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include <sys/stat.h> |
| #include <string.h> |
| |
| #ifdef _MSC_VER |
| #include <io.h> |
| #define S_IRUSR _S_IREAD |
| #define S_IWUSR _S_IWRITE |
| #else |
| #include <unistd.h> |
| #define O_BINARY 0 |
| #endif |
| |
| namespace orc { |
| |
| class FileInputStream : public InputStream { |
| private: |
| std::string filename; |
| int file; |
| uint64_t totalLength; |
| |
| public: |
| FileInputStream(std::string _filename) { |
| filename = _filename; |
| file = open(filename.c_str(), O_BINARY | O_RDONLY); |
| if (file == -1) { |
| throw ParseError("Can't open " + filename); |
| } |
| struct stat fileStat; |
| if (fstat(file, &fileStat) == -1) { |
| throw ParseError("Can't stat " + filename); |
| } |
| totalLength = static_cast<uint64_t>(fileStat.st_size); |
| } |
| |
| ~FileInputStream() override; |
| |
| uint64_t getLength() const override { |
| return totalLength; |
| } |
| |
| uint64_t getNaturalReadSize() const override { |
| return 128 * 1024; |
| } |
| |
| void read(void* buf, |
| uint64_t length, |
| uint64_t offset) override { |
| if (!buf) { |
| throw ParseError("Buffer is null"); |
| } |
| ssize_t bytesRead = pread(file, buf, length, static_cast<off_t>(offset)); |
| |
| if (bytesRead == -1) { |
| throw ParseError("Bad read of " + filename); |
| } |
| if (static_cast<uint64_t>(bytesRead) != length) { |
| throw ParseError("Short read of " + filename); |
| } |
| } |
| |
| const std::string& getName() const override { |
| return filename; |
| } |
| }; |
| |
| FileInputStream::~FileInputStream() { |
| close(file); |
| } |
| |
| std::unique_ptr<InputStream> readFile(const std::string& path) { |
| #ifdef BUILD_LIBHDFSPP |
| if(strncmp (path.c_str(), "hdfs://", 7) == 0){ |
| return orc::readHdfsFile(std::string(path)); |
| } else { |
| #endif |
| return orc::readLocalFile(std::string(path)); |
| #ifdef BUILD_LIBHDFSPP |
| } |
| #endif |
| } |
| |
| std::unique_ptr<InputStream> readLocalFile(const std::string& path) { |
| return std::unique_ptr<InputStream>(new FileInputStream(path)); |
| } |
| |
| OutputStream::~OutputStream() { |
| // PASS |
| }; |
| |
| class FileOutputStream : public OutputStream { |
| private: |
| std::string filename; |
| int file; |
| uint64_t bytesWritten; |
| bool closed; |
| |
| public: |
| FileOutputStream(std::string _filename) { |
| bytesWritten = 0; |
| filename = _filename; |
| closed = false; |
| file = open( |
| filename.c_str(), |
| O_BINARY | O_CREAT | O_WRONLY | O_TRUNC, |
| S_IRUSR | S_IWUSR); |
| if (file == -1) { |
| throw ParseError("Can't open " + filename); |
| } |
| } |
| |
| ~FileOutputStream() override; |
| |
| uint64_t getLength() const override { |
| return bytesWritten; |
| } |
| |
| uint64_t getNaturalWriteSize() const override { |
| return 128 * 1024; |
| } |
| |
| void write(const void* buf, size_t length) override { |
| if (closed) { |
| throw std::logic_error("Cannot write to closed stream."); |
| } |
| ssize_t bytesWrite = ::write(file, buf, length); |
| if (bytesWrite == -1) { |
| throw ParseError("Bad write of " + filename); |
| } |
| if (static_cast<uint64_t>(bytesWrite) != length) { |
| throw ParseError("Short write of " + filename); |
| } |
| bytesWritten += static_cast<uint64_t>(bytesWrite); |
| } |
| |
| const std::string& getName() const override { |
| return filename; |
| } |
| |
| void close() override { |
| if (!closed) { |
| ::close(file); |
| closed = true; |
| } |
| } |
| }; |
| |
| FileOutputStream::~FileOutputStream() { |
| if (!closed) { |
| ::close(file); |
| closed = true; |
| } |
| } |
| |
| std::unique_ptr<OutputStream> writeLocalFile(const std::string& path) { |
| return std::unique_ptr<OutputStream>(new FileOutputStream(path)); |
| } |
| } |