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d580e7c694
* Use nullptr (C++11) instead of NULL. * Put each file into its own namespace declaration. * Remove "using namespace" directives and add scope qualifiers. * Control when beast's implementation of std::equal (C++14) is used. * Tidy up some const declarations. Conflicts: src/ripple_app/shamap/SHAMapSync.cpp src/ripple_app/tx/TransactionEngine.cpp
118 lines
4.2 KiB
C++
118 lines
4.2 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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static File createTempFile (const File& parentDirectory, String name,
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const String& suffix, const int optionFlags)
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{
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if ((optionFlags & TemporaryFile::useHiddenFile) != 0)
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name = "." + name;
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return parentDirectory.getNonexistentChildFile (name, suffix, (optionFlags & TemporaryFile::putNumbersInBrackets) != 0);
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}
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TemporaryFile::TemporaryFile (const String& suffix, const int optionFlags)
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: temporaryFile (createTempFile (File::getSpecialLocation (File::tempDirectory),
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"temp_" + String::toHexString (Random::getSystemRandom().nextInt()),
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suffix, optionFlags))
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{
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}
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TemporaryFile::TemporaryFile (const File& target, const int optionFlags)
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: temporaryFile (createTempFile (target.getParentDirectory(),
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target.getFileNameWithoutExtension()
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+ "_temp" + String::toHexString (Random::getSystemRandom().nextInt()),
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target.getFileExtension(), optionFlags)),
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targetFile (target)
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{
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// If you use this constructor, you need to give it a valid target file!
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bassert (targetFile != File::nonexistent ());
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}
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TemporaryFile::TemporaryFile (const File& target, const File& temporary)
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: temporaryFile (temporary), targetFile (target)
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{
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}
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TemporaryFile::~TemporaryFile()
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{
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if (! deleteTemporaryFile())
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{
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/* Failed to delete our temporary file! The most likely reason for this would be
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that you've not closed an output stream that was being used to write to file.
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If you find that something beyond your control is changing permissions on
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your temporary files and preventing them from being deleted, you may want to
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call TemporaryFile::deleteTemporaryFile() to detect those error cases and
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handle them appropriately.
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*/
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bassertfalse;
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}
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}
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//==============================================================================
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bool TemporaryFile::overwriteTargetFileWithTemporary() const
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{
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// This method only works if you created this object with the constructor
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// that takes a target file!
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bassert (targetFile != File::nonexistent ());
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if (temporaryFile.exists())
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{
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// Have a few attempts at overwriting the file before giving up..
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for (int i = 5; --i >= 0;)
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{
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if (temporaryFile.moveFileTo (targetFile))
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return true;
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Thread::sleep (100);
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}
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}
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else
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{
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// There's no temporary file to use. If your write failed, you should
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// probably check, and not bother calling this method.
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bassertfalse;
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}
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return false;
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}
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bool TemporaryFile::deleteTemporaryFile() const
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{
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// Have a few attempts at deleting the file before giving up..
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for (int i = 5; --i >= 0;)
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{
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if (temporaryFile.deleteFile())
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return true;
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Thread::sleep (50);
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}
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return false;
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}
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} // namespace beast
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