ProjectFormatExtensionsRegistry.cpp

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  ProjectFormatExtensionRegistry.cpp
 
  Dmitry Vedenko
 
**********************************************************************/
 
 
#include "ProjectFormatExtensionsRegistry.h"
 
#include <algorithm>
 
#include "Project.h"
 
ProjectFormatExtensionsRegistry& GetProjectFormatExtensionsRegistry()
{
   static ProjectFormatExtensionsRegistry instance;
   return instance;
}
 
const ProjectFormatExtensionsRegistry& ProjectFormatExtensionsRegistry::Get()
{
   return GetProjectFormatExtensionsRegistry();
}
 
void ProjectFormatExtensionsRegistry::Register(
   ProjectVersionResolver formatExtension)
{
   mRegisteredExtensions.emplace_back(std::move(formatExtension));
}
 
ProjectFormatVersion ProjectFormatExtensionsRegistry::GetRequiredVersion(
   const AudacityProject& project) const
{
   ProjectFormatVersion minVersion = BaseProjectFormatVersion;
 
   for (auto formatExtension : mRegisteredExtensions)
   {
      if (!formatExtension)
         continue;
      
      const auto formatExtensionVersion = formatExtension(project);
 
      if (minVersion < formatExtensionVersion)
         minVersion = formatExtensionVersion;
   }
 
   return minVersion;
}
 
ProjectFormatExtensionsRegistry::Extension::Extension(
   ProjectVersionResolver resolver)
{
   if (resolver)
      GetProjectFormatExtensionsRegistry().Register(std::move(resolver));
}