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114 lines
3.0 KiB
114 lines
3.0 KiB
#ifndef IOUTILITIES_NATIVE_FILE_STREAM
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#define IOUTILITIES_NATIVE_FILE_STREAM
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#include "../global.h"
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#ifdef CPP_UTILITIES_USE_NATIVE_FILE_BUFFER
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#include <iostream>
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#include <memory>
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#include <streambuf>
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#include <string>
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#endif
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#include <fstream>
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namespace CppUtilities {
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#ifdef CPP_UTILITIES_USE_NATIVE_FILE_BUFFER
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class CPP_UTILITIES_EXPORT NativeFileStream : public std::iostream {
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public:
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#ifdef PLATFORM_WINDOWS
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using Handle = void *;
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#endif
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struct CPP_UTILITIES_EXPORT FileBuffer {
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FileBuffer(std::basic_streambuf<char> *buffer);
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FileBuffer(const std::string &path, ios_base::openmode openMode);
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FileBuffer(int fileDescriptor, ios_base::openmode openMode);
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std::unique_ptr<std::basic_streambuf<char>> buffer;
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#ifdef PLATFORM_WINDOWS
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Handle handle = nullptr;
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#endif
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int descriptor = -1;
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};
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NativeFileStream();
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NativeFileStream(const std::string &path, std::ios_base::openmode openMode);
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NativeFileStream(int fileDescriptor, std::ios_base::openmode openMode);
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NativeFileStream(NativeFileStream &&);
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~NativeFileStream() override;
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bool is_open() const;
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bool isOpen() const;
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void open(const std::string &path, std::ios_base::openmode openMode);
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void open(int fileDescriptor, std::ios_base::openmode openMode);
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void close();
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int fileDescriptor();
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#ifdef PLATFORM_WINDOWS
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Handle fileHandle();
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static std::unique_ptr<wchar_t[]> makeWidePath(const std::string &path);
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#endif
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private:
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void setData(FileBuffer data, std::ios_base::openmode openMode);
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FileBuffer m_data;
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std::ios_base::openmode m_openMode;
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};
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/*!
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* \brief Constructs a new NativeFileStream. The specified \a path is supposed to be UTF-8 encoded.
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*/
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inline NativeFileStream::NativeFileStream(const std::string &path, ios_base::openmode openMode)
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: NativeFileStream()
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{
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open(path, openMode);
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}
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/*!
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* \brief Constructs a new NativeFileStream. The specified \a fileDescriptor is either a POSIX file descriptor or a Windows CRT file descriptor.
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*/
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inline NativeFileStream::NativeFileStream(int fileDescriptor, ios_base::openmode openMode)
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: NativeFileStream()
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{
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open(fileDescriptor, openMode);
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}
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/*!
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* \brief Returns the native POSIX or Windows CRT file descriptor.
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* \remarks Might not be populated if only a Windows file handle is used.
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*/
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inline int NativeFileStream::fileDescriptor()
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{
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return m_data.descriptor;
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}
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#ifdef PLATFORM_WINDOWS
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/*!
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* \brief Returns the native Windows file handle.
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* \remarks Might not be populated if only a Windows CRT file descriptor is used.
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*/
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inline NativeFileStream::Handle NativeFileStream::fileHandle()
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{
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return m_data.handle;
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}
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#endif
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/*!
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* \brief Returns whether the file is open.
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* \remarks Same as NativeFileStream::isOpen(); provided for API compatibility with std::fstream.
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*/
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inline bool NativeFileStream::is_open() const
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{
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return isOpen();
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}
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#else // CPP_UTILITIES_USE_NATIVE_FILE_BUFFER
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using NativeFileStream = std::fstream;
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#endif
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} // namespace CppUtilities
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#endif // IOUTILITIES_NATIVE_FILE_STREAM
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