2006-10-23 17:48:43 +02:00
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//
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// File_WIN32.cpp
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//
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// $Id: //poco/1.2/Foundation/src/File_WIN32.cpp#1 $
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//
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// Library: Foundation
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// Package: Filesystem
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// Module: File
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Poco/File_WIN32.h"
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#include "Poco/Exception.h"
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#include <windows.h>
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namespace Poco {
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class FileHandle
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{
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public:
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FileHandle(const std::string& path, DWORD access, DWORD share, DWORD disp)
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{
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_h = CreateFile(path.c_str(), access, share, 0, disp, 0, 0);
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if (!_h) FileImpl::handleError(path);
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}
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~FileHandle()
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{
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if (_h) CloseHandle(_h);
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}
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HANDLE get() const
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{
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return _h;
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}
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private:
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HANDLE _h;
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};
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FileImpl::FileImpl()
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{
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}
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FileImpl::FileImpl(const std::string& path): _path(path)
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{
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std::string::size_type n = _path.size();
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if (n > 0 && (_path[n - 1] == '\\' || _path[n - 1] == '/'))
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_path.resize(n - 1);
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}
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FileImpl::~FileImpl()
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{
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}
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void FileImpl::swapImpl(FileImpl& file)
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{
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std::swap(_path, file._path);
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}
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void FileImpl::setPathImpl(const std::string& path)
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{
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_path = path;
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}
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bool FileImpl::existsImpl() const
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{
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poco_assert (!_path.empty());
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DWORD attr = GetFileAttributes(_path.c_str());
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if (attr == 0xFFFFFFFF)
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{
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switch (GetLastError())
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{
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case ERROR_FILE_NOT_FOUND:
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case ERROR_PATH_NOT_FOUND:
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case ERROR_NOT_READY:
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case ERROR_INVALID_DRIVE:
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return false;
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default:
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handleError(_path);
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}
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}
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return true;
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}
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bool FileImpl::canReadImpl() const
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{
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poco_assert (!_path.empty());
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DWORD attr = GetFileAttributes(_path.c_str());
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if (attr == 0xFFFFFFFF)
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{
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switch (GetLastError())
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{
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case ERROR_ACCESS_DENIED:
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return false;
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default:
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handleError(_path);
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}
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}
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return true;
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}
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bool FileImpl::canWriteImpl() const
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{
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poco_assert (!_path.empty());
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DWORD attr = GetFileAttributes(_path.c_str());
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if (attr == 0xFFFFFFFF)
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handleError(_path);
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return (attr & FILE_ATTRIBUTE_READONLY) == 0;
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}
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bool FileImpl::isFileImpl() const
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{
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poco_assert (!_path.empty());
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DWORD attr = GetFileAttributes(_path.c_str());
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if (attr == 0xFFFFFFFF)
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handleError(_path);
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return (attr & FILE_ATTRIBUTE_DIRECTORY) == 0;
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}
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bool FileImpl::isDirectoryImpl() const
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{
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poco_assert (!_path.empty());
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DWORD attr = GetFileAttributes(_path.c_str());
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if (attr == 0xFFFFFFFF)
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handleError(_path);
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return (attr & FILE_ATTRIBUTE_DIRECTORY) != 0;
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}
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bool FileImpl::isLinkImpl() const
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{
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return false;
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}
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Timestamp FileImpl::createdImpl() const
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{
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poco_assert (!_path.empty());
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WIN32_FILE_ATTRIBUTE_DATA fad;
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if (GetFileAttributesEx(_path.c_str(), GetFileExInfoStandard, &fad) == 0)
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handleError(_path);
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return Timestamp::fromFileTimeNP(fad.ftCreationTime.dwLowDateTime, fad.ftCreationTime.dwHighDateTime);
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}
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Timestamp FileImpl::getLastModifiedImpl() const
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{
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poco_assert (!_path.empty());
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WIN32_FILE_ATTRIBUTE_DATA fad;
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if (GetFileAttributesEx(_path.c_str(), GetFileExInfoStandard, &fad) == 0)
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handleError(_path);
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return Timestamp::fromFileTimeNP(fad.ftLastWriteTime.dwLowDateTime, fad.ftLastWriteTime.dwHighDateTime);
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}
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void FileImpl::setLastModifiedImpl(const Timestamp& ts)
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{
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poco_assert (!_path.empty());
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UInt32 low;
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UInt32 high;
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ts.toFileTimeNP(low, high);
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FILETIME ft;
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ft.dwLowDateTime = low;
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ft.dwHighDateTime = high;
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FileHandle fh(_path, FILE_ALL_ACCESS, FILE_SHARE_WRITE, OPEN_EXISTING);
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if (SetFileTime(fh.get(), 0, &ft, &ft) == 0)
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handleError(_path);
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}
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FileImpl::FileSizeImpl FileImpl::getSizeImpl() const
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{
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poco_assert (!_path.empty());
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WIN32_FILE_ATTRIBUTE_DATA fad;
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if (GetFileAttributesEx(_path.c_str(), GetFileExInfoStandard, &fad) == 0)
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handleError(_path);
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LARGE_INTEGER li;
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li.LowPart = fad.nFileSizeLow;
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li.HighPart = fad.nFileSizeHigh;
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return li.QuadPart;
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}
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void FileImpl::setSizeImpl(FileSizeImpl size)
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{
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poco_assert (!_path.empty());
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FileHandle fh(_path, GENERIC_WRITE, FILE_SHARE_WRITE, OPEN_EXISTING);
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LARGE_INTEGER li;
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li.QuadPart = size;
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if (SetFilePointer(fh.get(), li.LowPart, &li.HighPart, FILE_BEGIN) == -1)
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handleError(_path);
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if (SetEndOfFile(fh.get()) == 0)
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handleError(_path);
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}
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void FileImpl::setWriteableImpl(bool flag)
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{
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poco_assert (!_path.empty());
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DWORD attr = GetFileAttributes(_path.c_str());
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if (attr == -1)
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handleError(_path);
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if (flag)
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attr &= ~FILE_ATTRIBUTE_READONLY;
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else
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attr |= FILE_ATTRIBUTE_READONLY;
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if (SetFileAttributes(_path.c_str(), attr) == 0)
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handleError(_path);
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}
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void FileImpl::copyToImpl(const std::string& path) const
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{
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poco_assert (!_path.empty());
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if (CopyFile(_path.c_str(), path.c_str(), FALSE) == 0)
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handleError(_path);
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}
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void FileImpl::renameToImpl(const std::string& path)
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{
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poco_assert (!_path.empty());
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if (MoveFile(_path.c_str(), path.c_str()) == 0)
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handleError(_path);
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}
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void FileImpl::removeImpl()
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{
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poco_assert (!_path.empty());
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if (isDirectoryImpl())
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{
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if (RemoveDirectory(_path.c_str()) == 0)
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handleError(_path);
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}
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else
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{
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if (DeleteFile(_path.c_str()) == 0)
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handleError(_path);
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}
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}
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bool FileImpl::createFileImpl()
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{
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poco_assert (!_path.empty());
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HANDLE hFile = CreateFile(_path.c_str(), GENERIC_WRITE, 0, 0, CREATE_NEW, 0, 0);
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if (hFile)
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{
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CloseHandle(hFile);
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return true;
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}
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else if (GetLastError() == ERROR_ALREADY_EXISTS)
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return false;
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else
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handleError(_path);
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return false;
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}
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bool FileImpl::createDirectoryImpl()
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{
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poco_assert (!_path.empty());
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if (existsImpl() && isDirectoryImpl())
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return false;
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if (CreateDirectory(_path.c_str(), 0) == 0)
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handleError(_path);
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return true;
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}
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void FileImpl::handleError(const std::string& path)
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{
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switch (GetLastError())
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{
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case ERROR_FILE_NOT_FOUND:
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throw FileNotFoundException(path);
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case ERROR_PATH_NOT_FOUND:
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case ERROR_BAD_NETPATH:
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case ERROR_CANT_RESOLVE_FILENAME:
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case ERROR_INVALID_DRIVE:
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throw PathNotFoundException(path);
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case ERROR_ACCESS_DENIED:
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throw FileAccessDeniedException(path);
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case ERROR_ALREADY_EXISTS:
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case ERROR_FILE_EXISTS:
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throw FileExistsException(path);
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case ERROR_INVALID_NAME:
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case ERROR_DIRECTORY:
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case ERROR_FILENAME_EXCED_RANGE:
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case ERROR_BAD_PATHNAME:
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throw PathSyntaxException(path);
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case ERROR_FILE_READ_ONLY:
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throw FileReadOnlyException(path);
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case ERROR_CANNOT_MAKE:
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throw CreateFileException(path);
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case ERROR_DIR_NOT_EMPTY:
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throw FileException("directory not empty", path);
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default:
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throw FileException(path);
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}
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}
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} // namespace Poco
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