///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2014, Industrial Light & Magic, a division of Lucas
// Digital Ltd. LLC
//
// All rights reserved.
//
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// modification, are permitted provided that the following conditions are
// met:
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// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
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// in the documentation and/or other materials provided with the
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///////////////////////////////////////////////////////////////////////////
#ifndef INCLUDED_IMF_IMAGE_CHANNEL_RENAMING_H
#define INCLUDED_IMF_IMAGE_CHANNEL_RENAMING_H
//----------------------------------------------------------------------------
//
// typedef RenamingMap,
// helper functions for image channel renaming.
//
//----------------------------------------------------------------------------
#include <ImfNamespace.h>
#include <string>
#include <map>
OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER
//
// Given a map from old channel names to new channel names,
// rename the channels in an image or image level.
// This function assumes that the channel old-to-new-names
// map has already been checked for collisions.
//
typedef std::map <std::string, std::string> RenamingMap;
template <class ChannelMap>
void
renameChannelsInMap (const RenamingMap oldToNewNames, ChannelMap &channels);
//-----------------------------------------------------------------------------
// Implementation
//-----------------------------------------------------------------------------
template <class ChannelMap>
void
renameChannelsInMap (const RenamingMap oldToNewNames, ChannelMap &channels)
{
ChannelMap renamedChannels;
for (typename ChannelMap::const_iterator i = channels.begin();
i != channels.end();
++i)
{
RenamingMap::const_iterator j = oldToNewNames.find (i->first);
std::string newName = (j == oldToNewNames.end())? i->first: j->second;
renamedChannels[newName] = i->second;
}
channels = renamedChannels;
}
OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT
#endif