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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found at: www.gnu.org/licenses
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.juce.com for more information.
==============================================================================
*/
#include "../jucer_Headers.h"
#include "jucer_CodeHelpers.h"
//==============================================================================
namespace FileHelpers
{
static int64 calculateMemoryHashCode (const void* data, const size_t numBytes)
{
int64 t = 0;
for (size_t i = 0; i < numBytes; ++i)
t = t * 65599 + static_cast<const uint8*> (data)[i];
return t;
}
int64 calculateStreamHashCode (InputStream& in)
{
int64 t = 0;
const int bufferSize = 4096;
HeapBlock<uint8> buffer;
buffer.malloc (bufferSize);
for (;;)
{
const int num = in.read (buffer, bufferSize);
if (num <= 0)
break;
for (int i = 0; i < num; ++i)
t = t * 65599 + buffer[i];
}
return t;
}
int64 calculateFileHashCode (const File& file)
{
ScopedPointer<FileInputStream> stream (file.createInputStream());
return stream != nullptr ? calculateStreamHashCode (*stream) : 0;
}
bool overwriteFileWithNewDataIfDifferent (const File& file, const void* data, size_t numBytes)
{
if (file.getSize() == (int64) numBytes
&& calculateMemoryHashCode (data, numBytes) == calculateFileHashCode (file))
return true;
if (file.exists())
return file.replaceWithData (data, numBytes);
return file.getParentDirectory().createDirectory() && file.appendData (data, numBytes);
}
bool overwriteFileWithNewDataIfDifferent (const File& file, const MemoryOutputStream& newData)
{
return overwriteFileWithNewDataIfDifferent (file, newData.getData(), newData.getDataSize());
}
bool overwriteFileWithNewDataIfDifferent (const File& file, const String& newData)
{
const char* const utf8 = newData.toUTF8();
return overwriteFileWithNewDataIfDifferent (file, utf8, strlen (utf8));
}
bool containsAnyNonHiddenFiles (const File& folder)
{
DirectoryIterator di (folder, false);
while (di.next())
if (! di.getFile().isHidden())
return true;
return false;
}
String unixStylePath (const String& path) { return path.replaceCharacter ('\\', '/'); }
String windowsStylePath (const String& path) { return path.replaceCharacter ('/', '\\'); }
String currentOSStylePath (const String& path)
{
#if JUCE_WINDOWS
return windowsStylePath (path);
#else
return unixStylePath (path);
#endif
}
bool isAbsolutePath (const String& path)
{
return File::isAbsolutePath (path)
|| path.startsWithChar ('/') // (needed because File::isAbsolutePath will ignore forward-slashes on Windows)
|| path.startsWithChar ('$')
|| path.startsWithChar ('~')
|| (CharacterFunctions::isLetter (path[0]) && path[1] == ':')
|| path.startsWithIgnoreCase ("smb:");
}
String appendPath (const String& path, const String& subpath)
{
if (isAbsolutePath (subpath))
return unixStylePath (subpath);
String path1 (unixStylePath (path));
if (! path1.endsWithChar ('/'))
path1 << '/';
return path1 + unixStylePath (subpath);
}
bool shouldPathsBeRelative (String path1, String path2)
{
path1 = unixStylePath (path1);
path2 = unixStylePath (path2);
const int len = jmin (path1.length(), path2.length());
int commonBitLength = 0;
for (int i = 0; i < len; ++i)
{
if (CharacterFunctions::toLowerCase (path1[i]) != CharacterFunctions::toLowerCase (path2[i]))
break;
++commonBitLength;
}
return path1.substring (0, commonBitLength).removeCharacters ("/:").isNotEmpty();
}
String getRelativePathFrom (const File& file, const File& sourceFolder)
{
#if ! JUCE_WINDOWS
// On a non-windows machine, we can't know if a drive-letter path may be relative or not.
if (CharacterFunctions::isLetter (file.getFullPathName()[0]) && file.getFullPathName()[1] == ':')
return file.getFullPathName();
#endif
return file.getRelativePathFrom (sourceFolder);
}
// removes "/../" bits from the middle of the path
String simplifyPath (String::CharPointerType p)
{
#if JUCE_WINDOWS
if (CharacterFunctions::indexOf (p, CharPointer_ASCII ("/../")) >= 0
|| CharacterFunctions::indexOf (p, CharPointer_ASCII ("\\..\\")) >= 0)
#else
if (CharacterFunctions::indexOf (p, CharPointer_ASCII ("/../")) >= 0)
#endif
{
StringArray toks;
#if JUCE_WINDOWS
toks.addTokens (p, "\\/", StringRef());
#else
toks.addTokens (p, "/", StringRef());
#endif
while (toks[0] == ".")
toks.remove (0);
for (int i = 1; i < toks.size(); ++i)
{
if (toks[i] == ".." && toks [i - 1] != "..")
{
toks.removeRange (i - 1, 2);
i = jmax (0, i - 2);
}
}
return toks.joinIntoString ("/");
}
return p;
}
String simplifyPath (const String& path)
{
#if JUCE_WINDOWS
if (path.contains ("\\..\\") || path.contains ("/../"))
#else
if (path.contains ("/../"))
#endif
return simplifyPath (path.getCharPointer());
return path;
}
}
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