SchemeList::SchemeList(const std::string &expr)
: m_listString(expr)
{
eraseWhiteSpaces();
if (m_listString.empty()/* || m_listString[0] != '(' || m_listString[m_listString.size() - 1] != ')'*/)
m_listString = "()";
// throw std::runtime_error("Bad expression.");
}
void SystemPath::parse( String const& systempathstring )
{
if( systempathstring.empty() )
{
return;
}
String aString( systempathstring );
eraseWhiteSpaces( aString );
String::size_type aCompStart( 0 );
// absolute path ( start with '/' )
if( aString[ 0 ] == DELIMITER )
{
push_back( String( 1, DELIMITER ) );
++aCompStart;
}
for ( String::size_type aCompEnd; aCompStart < aString.size();
aCompStart = aCompEnd + 1 )
{
aCompEnd = aString.find_first_of( DELIMITER, aCompStart );
if ( aCompEnd == String::npos )
{
aCompEnd = aString.size();
}
String aComponent( aString.substr( aCompStart, aCompEnd - aCompStart ) );
if ( aComponent == ".." )
{
if ( theComponents.size() == 1 &&
theComponents.front()[ 0 ] == DELIMITER )
{
THROW_EXCEPTION( BadSystemPath,
"Too many levels of retraction with .." );
}
else if ( theComponents.empty() || theComponents.back() == ".." )
{
theComponents.push_back( aComponent );
}
else
{
theComponents.pop_back();
}
}
else if ( !aComponent.empty() && aComponent != "." )
{
theComponents.push_back( aComponent );
}
}
if ( !aString.empty() && theComponents.empty() )
{
theComponents.push_back( "." );
}
}
void FullID::parse( String const& fullidstring )
{
// empty FullID string is invalid
if( fullidstring == "" )
{
THROW_EXCEPTION( BadID, "empty FullID string" );
}
String aString( fullidstring );
eraseWhiteSpaces( aString );
// ignore leading white spaces
String::size_type aFieldStart( 0 );
String::size_type aFieldEnd( aString.find_first_of( DELIMITER, aFieldStart ) );
if( aFieldEnd == String::npos )
{
THROW_EXCEPTION( BadID,
"no ':' in the FullID string [" + aString + "]" );
}
String aTypeString( aString.substr( aFieldStart, aFieldEnd - aFieldStart ) );
theEntityType = EntityType( aTypeString );
aFieldStart = aFieldEnd + 1;
aFieldEnd = aString.find_first_of( DELIMITER, aFieldStart );
if( aFieldEnd == String::npos )
{
THROW_EXCEPTION( BadID, "only one ':' in the FullID string ["
+ aString + "]" );
}
theSystemPath = SystemPath( aString.substr( aFieldStart,
aFieldEnd - aFieldStart ) );
aFieldStart = aFieldEnd + 1;
// drop trailing string after extra ':'(if this is FullPN),
// or go to the end
aFieldEnd = aString.find_first_of( DELIMITER, aFieldStart );
theID = aString.substr( aFieldStart, aFieldEnd - aFieldStart );
}
FullPN::FullPN( String const& fullpropertynamestring )
: theFullID( fullpropertynamestring )
{
String::size_type aPosition( 0 );
for( int i( 0 ) ; i < 3 ; ++i )
{
aPosition = fullpropertynamestring.
find_first_of( FullID::DELIMITER, aPosition );
if( aPosition == String::npos )
{
THROW_EXCEPTION( BadID, "not enough fields in FullPN string [" +
fullpropertynamestring + "]" );
}
++aPosition;
}
thePropertyName = fullpropertynamestring.substr( aPosition, String::npos );
eraseWhiteSpaces( thePropertyName );
}