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9930b12d9d
* Remove binding, dispatch handling and exit hooks in favor of std alternatives; remove crash-handling infrastructure, error message framework, system-specific process handling and Objective-C interop helpers. * Simplify Beast function profiling * Simplify beast::Time interface * Simplify beast::String interface * Simplify beast::File interface
373 lines
12 KiB
C++
373 lines
12 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Portions of this file are from JUCE.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Please visit http://www.juce.com
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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namespace beast
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{
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#ifndef INVALID_FILE_ATTRIBUTES
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#define INVALID_FILE_ATTRIBUTES ((DWORD) -1)
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#endif
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//==============================================================================
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namespace WindowsFileHelpers
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{
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static_assert (sizeof (ULARGE_INTEGER) == sizeof (FILETIME),
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"The FILETIME structure format has been modified.");
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DWORD getAtts (const String& path)
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{
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return GetFileAttributes (path.toWideCharPointer());
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}
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std::int64_t fileTimeToTime (const FILETIME* const ft)
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{
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return (std::int64_t) ((reinterpret_cast<const ULARGE_INTEGER*> (ft)->QuadPart - 116444736000000000LL) / 10000);
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}
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FILETIME* timeToFileTime (const std::int64_t time, FILETIME* const ft) noexcept
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{
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if (time <= 0)
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return nullptr;
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reinterpret_cast<ULARGE_INTEGER*> (ft)->QuadPart = (ULONGLONG) (time * 10000 + 116444736000000000LL);
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return ft;
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}
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String getDriveFromPath (String path)
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{
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if (path.isNotEmpty() && path[1] == ':' && path[2] == 0)
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path << '\\';
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const size_t numBytes = CharPointer_UTF16::getBytesRequiredFor (path.getCharPointer()) + 4;
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HeapBlock<WCHAR> pathCopy;
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pathCopy.calloc (numBytes, 1);
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path.copyToUTF16 (pathCopy, numBytes);
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if (PathStripToRoot (pathCopy))
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path = static_cast <const WCHAR*> (pathCopy);
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return path;
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}
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unsigned int getWindowsDriveType (const String& path)
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{
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return GetDriveType (getDriveFromPath (path).toWideCharPointer());
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}
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File getSpecialFolderPath (int type)
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{
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WCHAR path [MAX_PATH + 256];
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if (SHGetSpecialFolderPath (0, path, type, FALSE))
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return File (String (path));
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return File::nonexistent ();
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}
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File getModuleFileName (HINSTANCE moduleHandle)
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{
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WCHAR dest [MAX_PATH + 256];
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dest[0] = 0;
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GetModuleFileName (moduleHandle, dest, (DWORD) numElementsInArray (dest));
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return File (String (dest));
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}
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Result getResultForLastError()
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{
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TCHAR messageBuffer [256] = { 0 };
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FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
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nullptr, GetLastError(), MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
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messageBuffer, (DWORD) numElementsInArray (messageBuffer) - 1, nullptr);
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return Result::fail (String (messageBuffer));
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}
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}
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//==============================================================================
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const beast_wchar File::separator = '\\';
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const String File::separatorString ("\\");
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//==============================================================================
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bool File::exists() const
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{
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return fullPath.isNotEmpty()
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&& WindowsFileHelpers::getAtts (fullPath) != INVALID_FILE_ATTRIBUTES;
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}
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bool File::existsAsFile() const
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{
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return fullPath.isNotEmpty()
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&& (WindowsFileHelpers::getAtts (fullPath) & FILE_ATTRIBUTE_DIRECTORY) == 0;
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}
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bool File::isDirectory() const
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{
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const DWORD attr = WindowsFileHelpers::getAtts (fullPath);
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return ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) && (attr != INVALID_FILE_ATTRIBUTES);
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}
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//==============================================================================
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bool File::deleteFile() const
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{
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if (! exists())
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return true;
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return isDirectory() ? RemoveDirectory (fullPath.toWideCharPointer()) != 0
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: DeleteFile (fullPath.toWideCharPointer()) != 0;
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}
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Result File::createDirectoryInternal (const String& fileName) const
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{
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return CreateDirectory (fileName.toWideCharPointer(), 0) ? Result::ok()
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: WindowsFileHelpers::getResultForLastError();
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}
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//==============================================================================
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std::int64_t beast_fileSetPosition (void* handle, std::int64_t pos)
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{
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LARGE_INTEGER li;
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li.QuadPart = pos;
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li.LowPart = SetFilePointer ((HANDLE) handle, (LONG) li.LowPart, &li.HighPart, FILE_BEGIN); // (returns -1 if it fails)
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return li.QuadPart;
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}
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void FileInputStream::openHandle()
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{
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HANDLE h = CreateFile (file.getFullPathName().toWideCharPointer(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, 0,
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OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, 0);
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if (h != INVALID_HANDLE_VALUE)
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fileHandle = (void*) h;
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else
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status = WindowsFileHelpers::getResultForLastError();
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}
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void FileInputStream::closeHandle()
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{
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CloseHandle ((HANDLE) fileHandle);
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}
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size_t FileInputStream::readInternal (void* buffer, size_t numBytes)
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{
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if (fileHandle != 0)
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{
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DWORD actualNum = 0;
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if (! ReadFile ((HANDLE) fileHandle, buffer, (DWORD) numBytes, &actualNum, 0))
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status = WindowsFileHelpers::getResultForLastError();
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return (size_t) actualNum;
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}
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return 0;
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}
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//==============================================================================
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void FileOutputStream::openHandle()
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{
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HANDLE h = CreateFile (file.getFullPathName().toWideCharPointer(), GENERIC_WRITE, FILE_SHARE_READ, 0,
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OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
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if (h != INVALID_HANDLE_VALUE)
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{
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LARGE_INTEGER li;
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li.QuadPart = 0;
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li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_END);
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if (li.LowPart != INVALID_SET_FILE_POINTER)
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{
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fileHandle = (void*) h;
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currentPosition = li.QuadPart;
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return;
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}
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}
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status = WindowsFileHelpers::getResultForLastError();
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}
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void FileOutputStream::closeHandle()
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{
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CloseHandle ((HANDLE) fileHandle);
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}
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std::ptrdiff_t FileOutputStream::writeInternal (const void* buffer, size_t numBytes)
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{
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if (fileHandle != nullptr)
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{
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DWORD actualNum = 0;
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if (! WriteFile ((HANDLE) fileHandle, buffer, (DWORD) numBytes, &actualNum, 0))
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status = WindowsFileHelpers::getResultForLastError();
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return (std::ptrdiff_t) actualNum;
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}
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return 0;
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}
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void FileOutputStream::flushInternal()
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{
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if (fileHandle != nullptr)
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if (! FlushFileBuffers ((HANDLE) fileHandle))
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status = WindowsFileHelpers::getResultForLastError();
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}
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Result FileOutputStream::truncate()
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{
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if (fileHandle == nullptr)
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return status;
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flush();
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return SetEndOfFile ((HANDLE) fileHandle) ? Result::ok()
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: WindowsFileHelpers::getResultForLastError();
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}
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//==============================================================================
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std::int64_t File::getSize() const
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{
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WIN32_FILE_ATTRIBUTE_DATA attributes;
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if (GetFileAttributesEx (fullPath.toWideCharPointer(), GetFileExInfoStandard, &attributes))
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return (((std::int64_t) attributes.nFileSizeHigh) << 32) | attributes.nFileSizeLow;
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return 0;
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}
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//==============================================================================
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File File::getSpecialLocation (const SpecialLocationType type)
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{
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int csidlType = 0;
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switch (type)
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{
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case userHomeDirectory: csidlType = CSIDL_PROFILE; break;
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case userDocumentsDirectory: csidlType = CSIDL_PERSONAL; break;
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case userDesktopDirectory: csidlType = CSIDL_DESKTOP; break;
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case userApplicationDataDirectory: csidlType = CSIDL_APPDATA; break;
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case commonApplicationDataDirectory: csidlType = CSIDL_COMMON_APPDATA; break;
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case commonDocumentsDirectory: csidlType = CSIDL_COMMON_DOCUMENTS; break;
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case globalApplicationsDirectory: csidlType = CSIDL_PROGRAM_FILES; break;
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case userMusicDirectory: csidlType = 0x0d; /*CSIDL_MYMUSIC*/ break;
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case userMoviesDirectory: csidlType = 0x0e; /*CSIDL_MYVIDEO*/ break;
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case userPicturesDirectory: csidlType = 0x27; /*CSIDL_MYPICTURES*/ break;
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case tempDirectory:
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{
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WCHAR dest [2048];
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dest[0] = 0;
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GetTempPath ((DWORD) numElementsInArray (dest), dest);
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return File (String (dest));
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}
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default:
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bassertfalse; // unknown type?
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return File::nonexistent ();
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}
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return WindowsFileHelpers::getSpecialFolderPath (csidlType);
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}
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//==============================================================================
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File File::getCurrentWorkingDirectory()
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{
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WCHAR dest [MAX_PATH + 256];
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dest[0] = 0;
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GetCurrentDirectory ((DWORD) numElementsInArray (dest), dest);
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return File (String (dest));
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}
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//==============================================================================
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class DirectoryIterator::NativeIterator::Pimpl
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{
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public:
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Pimpl (const File& directory, const String& wildCard)
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: directoryWithWildCard (File::addTrailingSeparator (directory.getFullPathName()) + wildCard),
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handle (INVALID_HANDLE_VALUE)
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{
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}
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Pimpl (Pimpl const&) = delete;
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Pimpl& operator= (Pimpl const&) = delete;
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~Pimpl()
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{
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if (handle != INVALID_HANDLE_VALUE)
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FindClose (handle);
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}
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bool next (String& filenameFound,
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bool* const isDir, bool* const isHidden, std::int64_t* const fileSize,
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Time* const modTime, Time* const creationTime, bool* const isReadOnly)
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{
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using namespace WindowsFileHelpers;
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WIN32_FIND_DATA findData;
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if (handle == INVALID_HANDLE_VALUE)
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{
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handle = FindFirstFile (directoryWithWildCard.toWideCharPointer(), &findData);
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if (handle == INVALID_HANDLE_VALUE)
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return false;
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}
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else
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{
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if (FindNextFile (handle, &findData) == 0)
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return false;
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}
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filenameFound = findData.cFileName;
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if (isDir != nullptr) *isDir = ((findData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0);
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if (isHidden != nullptr) *isHidden = ((findData.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) != 0);
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if (isReadOnly != nullptr) *isReadOnly = ((findData.dwFileAttributes & FILE_ATTRIBUTE_READONLY) != 0);
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if (fileSize != nullptr) *fileSize = findData.nFileSizeLow + (((std::int64_t) findData.nFileSizeHigh) << 32);
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if (modTime != nullptr) *modTime = Time (fileTimeToTime (&findData.ftLastWriteTime));
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if (creationTime != nullptr) *creationTime = Time (fileTimeToTime (&findData.ftCreationTime));
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return true;
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}
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private:
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const String directoryWithWildCard;
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HANDLE handle;
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};
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DirectoryIterator::NativeIterator::NativeIterator (const File& directory, const String& wildCard)
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: pimpl (new DirectoryIterator::NativeIterator::Pimpl (directory, wildCard))
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{
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}
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DirectoryIterator::NativeIterator::~NativeIterator()
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{
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}
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bool DirectoryIterator::NativeIterator::next (String& filenameFound,
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bool* const isDir, bool* const isHidden, std::int64_t* const fileSize,
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Time* const modTime, Time* const creationTime, bool* const isReadOnly)
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{
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return pimpl->next (filenameFound, isDir, isHidden, fileSize, modTime, creationTime, isReadOnly);
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}
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} // beast
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