URLSchemesRegistry.cpp

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/*  SPDX-License-Identifier: GPL-2.0-or-later */
/*!********************************************************************
 
  Audacity: A Digital Audio Editor
 
  URLSchemesRegistry.cpp
 
  Dmitry Vedenko
 
**********************************************************************/
 
#include "URLSchemesRegistry.h"
 
#include <cassert>
#include <string>
#include <vector>
#include <memory>
 
namespace
{
std::function<bool(std::string_view)> SchemeRegistrar;
}
 
void SetSchemaRegistrar(std::function<bool(std::string_view)> registrar);
void SetSchemaRegistrar(std::function<bool(std::string_view)> registrar)
{
   // Only a single registrar is allowed.
   assert(!SchemeRegistrar);
 
   SchemeRegistrar = std::move(registrar);
}
 
 
bool URLSchemesRegistry::IsURLHandlingSupported() const noexcept
{
   return !!SchemeRegistrar;
}
 
URLSchemesRegistry& URLSchemesRegistry::Get()
{
   static URLSchemesRegistry registry;
   return registry;
}
 
bool URLSchemesRegistry::RegisterScheme(std::string_view schema)
{
   if (!SchemeRegistrar)
      return false;
 
   return SchemeRegistrar(schema);
}
 
void URLSchemesRegistry::HandleURL(std::string_view url)
{
   Publish({ url });
}