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Introjucer saving optimisations.

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This commit is contained in:
Julian Storer 2011-08-13 15:31:49 +01:00
parent e7ca7963f0
commit d3bcbeef9c
10 changed files with 69 additions and 57 deletions
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31
extras/Introjucer/Source/Utility/jucer_FileHelpers.cpp
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@ -30,6 +30,16 @@
//==============================================================================
namespace FileHelpers
{
int64 calculateMemoryHashCode (const void* data, const int numBytes)
{
int64 t = 0;
for (int i = 0; i < numBytes; ++i)
t = t * 65599 + static_cast <const uint8*> (data)[i];
return t;
}
int64 calculateStreamHashCode (InputStream& in)
{
int64 t = 0;
@ -60,18 +70,14 @@ namespace FileHelpers
bool overwriteFileWithNewDataIfDifferent (const File& file, const void* data, int numBytes)
{
if (file.getSize() == numBytes)
{
MemoryInputStream newStream (data, numBytes, false);
if (file.getSize() == numBytes
&& calculateMemoryHashCode (data, numBytes) == calculateFileHashCode (file))
return true;
if (calculateStreamHashCode (newStream) == calculateFileHashCode (file))
return true;
}
TemporaryFile temp (file);
return temp.getFile().appendData (data, numBytes)
&& temp.overwriteTargetFileWithTemporary();
if (file.exists())
return file.replaceWithData (data, numBytes);
else
return file.appendData (data, numBytes);
}
bool overwriteFileWithNewDataIfDifferent (const File& file, const MemoryOutputStream& newData)
@ -144,8 +150,7 @@ namespace FileHelpers
bool isJuceFolder (const File& folder)
{
return folder.getFileName().containsIgnoreCase ("juce")
&& folder.getChildFile ("juce.h").exists()
&& folder.getChildFile ("modules").exists();
&& folder.getChildFile ("modules").isDirectory();
}
static File lookInFolderForJuceFolder (const File& folder)