juce/source/extras/Introjucer/Source/Utility/jucer_FileHelpers.h

   1 /*
   2   ==============================================================================
   3
   4    This file is part of the JUCE library - "Jules' Utility Class Extensions"
   5    Copyright 2004-10 by Raw Material Software Ltd.
   6
   7   ------------------------------------------------------------------------------
   8
   9    JUCE can be redistributed and/or modified under the terms of the GNU General
  10    Public License (Version 2), as published by the Free Software Foundation.
  11    A copy of the license is included in the JUCE distribution, or can be found
  12    online at www.gnu.org/licenses.
  13
  14    JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
  15    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  16    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  17
  18   ------------------------------------------------------------------------------
  19
  20    To release a closed-source product which uses JUCE, commercial licenses are
  21    available: visit www.rawmaterialsoftware.com/juce for more information.
  22
  23   ==============================================================================
  24 */
  25
  26 #ifndef __JUCER_FILEUTILITIES_H_EEE25EE3__
  27 #define __JUCER_FILEUTILITIES_H_EEE25EE3__
  28
  29
  30 //==============================================================================
  31 namespace FileHelpers
  32 {
  33     int64 calculateStreamHashCode (InputStream& stream);
  34     int64 calculateFileHashCode (const File& file);
  35
  36     bool overwriteFileWithNewDataIfDifferent (const File& file, const void* data, int numBytes);
  37     bool overwriteFileWithNewDataIfDifferent (const File& file, const MemoryOutputStream& newData);
  38     bool overwriteFileWithNewDataIfDifferent (const File& file, const String& newData);
  39
  40     bool containsAnyNonHiddenFiles (const File& folder);
  41
  42     const String unixStylePath (const String& path);
  43     const String windowsStylePath (const String& path);
  44
  45     bool shouldPathsBeRelative (String path1, String path2);
  46
  47     //==============================================================================
  48     bool isJuceFolder (const File& folder);
  49     const File findParentJuceFolder (const File& file);
  50     const File findDefaultJuceFolder();
  51 }
  52
  53 //==============================================================================
  54 class FileModificationDetector
  55 {
  56 public:
  57     FileModificationDetector (const File& file_)
  58         : file (file_)
  59     {
  60     }
  61
  62     const File& getFile() const                     { return file; }
  63     void fileHasBeenRenamed (const File& newFile)   { file = newFile; }
  64
  65     bool hasBeenModified() const
  66     {
  67         return fileModificationTime != file.getLastModificationTime()
  68                  && (fileSize != file.getSize()
  69                       || FileHelpers::calculateFileHashCode (file) != fileHashCode);
  70     }
  71
  72     void updateHash()
  73     {
  74         fileModificationTime = file.getLastModificationTime();
  75         fileSize = file.getSize();
  76         fileHashCode = FileHelpers::calculateFileHashCode (file);
  77     }
  78
  79 private:
  80     File file;
  81     Time fileModificationTime;
  82     int64 fileHashCode, fileSize;
  83 };
  84
  85
  86 #endif  // __JUCER_FILEUTILITIES_H_EEE25EE3__