Method ParseOptionsString

cpp/src/Options.cpp:406–494

----------------------------------------------------------------------------- Parse a string containing program options, such as a command line -----------------------------------------------------------------------------

// Parse a string containing program options, such as a command line
//-----------------------------------------------------------------------------
bool Options::ParseOptionsString
(
	string const& _commandLine
)
{
	bool res = true;

	size_t pos = 0;
	size_t start = 0;
	while( 1 )
	{
		// find start of first option name
		pos = _commandLine.find_first_of( "--", start );
		if( string::npos == pos )
		{
			break;
		}
		start = pos + 2;

		// found an option.  Get the name.
		string optionName;
		pos = _commandLine.find( " ", start );
		if( string::npos == pos )
		{
			optionName = _commandLine.substr( start );
			start = pos;
		}
		else
		{
			optionName = _commandLine.substr( start, pos-start );
			start = pos + 1;
		}

		// Find the matching option object
		Option* option = Find( optionName );
		if( option )
		{
			// Read the values
			int numValues = 0;
			bool parsing = true;
			while( parsing )
			{
				string value;
				size_t back = start;
				pos = _commandLine.find( " ", start );
				if( string::npos == pos )
				{
					// Last value in string
					value = _commandLine.substr( start );
					parsing = false;
					start = pos;
				}
				else
				{
					value = _commandLine.substr( start, pos-start );
					start = pos+1;
				}