RepoVariables.cc

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#include "zypp/base/LogTools.h"
#include "zypp/base/String.h"

#include "zypp/ZConfig.h"
#include "zypp/Target.h"
#include "zypp/Arch.h"
#include "zypp/repo/RepoVariables.h"
#include "zypp/base/NonCopyable.h"

namespace zypp
{
  namespace repo
  {
    namespace
    {
      struct ReplacerData : private zypp::base::NonCopyable
      {
        const std::string & sysarch() const
        {
          if ( _sysarch.empty() )
            initArchStr();
          return _sysarch;
        }

        const std::string & basearch() const
        {
          if ( _basearch.empty() )
            initArchStr();
          return _basearch;
        }

        const std::string & releasever() const
        {
          if( _releasever.empty() )
            _releasever = Target::distributionVersion( Pathname()/*guess*/ );
          return _releasever;
        }

      private:
        void initArchStr() const
        {
          Arch arch( ZConfig::instance().systemArchitecture() );
          _sysarch = arch.asString();
          _basearch = arch.baseArch().asString();
        }
      private:
        mutable std::string _sysarch;
        mutable std::string _basearch;
        mutable std::string _releasever;
      };

      std::string replacer( const std::string & value_r )
      {
        static ReplacerData _data;

        std::string ret( value_r );
        // Don't need to capture static (non automatic) _data in lambda
        ret = str::replaceAllFun( ret, "$arch",         []()-> std::string { return _data.sysarch(); } );
        ret = str::replaceAllFun( ret, "$basearch",     []()-> std::string { return _data.basearch(); } );
        ret = str::replaceAllFun( ret, "$releasever",   []()-> std::string { return _data.releasever(); } );
        return ret;
      }

    } // namespace

    std::string RepoVariablesStringReplacer::operator()( const std::string & value ) const
    {
      return replacer( value );
    }

    Url RepoVariablesUrlReplacer::operator()( const Url & value ) const
    {
      Url newurl( value );
      newurl.setPathData( replacer( value.getPathData() ) );
      newurl.setQueryString( replacer( value.getQueryString() ) );
      return newurl;
    }

  } // namespace repo
} // namespace zypp