public static String basedir()

in wagon-provider-api/src/main/java/org/apache/maven/wagon/PathUtils.java [307:413]
84 lines of code
21 McCabe index (conditional complexity)

    public static String basedir( String url )
    {
        String protocol = PathUtils.protocol( url );

        String retValue = null;

        if ( protocol.equalsIgnoreCase( "scm" ) )
        {
            // skip over SCM bits
            if ( url.regionMatches( true, 0, "scm:svn:", 0, 8 ) )
            {
                url = url.substring( url.indexOf( ":", 4 ) + 1 );
                protocol = PathUtils.protocol( url );
            }
        }

        if ( protocol.equalsIgnoreCase( "file" ) )
        {
            retValue = url.substring( protocol.length() + 1 );
            retValue = decode( retValue );
            // special case: if omitted // on protocol, keep path as is
            if ( retValue.startsWith( "//" ) )
            {
                retValue = retValue.substring( 2 );

                if ( retValue.length() >= 2 && ( retValue.charAt( 1 ) == '|' || retValue.charAt( 1 ) == ':' ) )
                {
                    // special case: if there is a windows drive letter, then keep the original return value
                    retValue = retValue.charAt( 0 ) + ":" + retValue.substring( 2 );
                }
                else
                {
                    // Now we expect the host
                    int index = retValue.indexOf( "/" );
                    if ( index >= 0 )
                    {
                        retValue = retValue.substring( index + 1 );
                    }

                    // special case: if there is a windows drive letter, then keep the original return value
                    if ( retValue.length() >= 2 && ( retValue.charAt( 1 ) == '|' || retValue.charAt( 1 ) == ':' ) )
                    {
                        retValue = retValue.charAt( 0 ) + ":" + retValue.substring( 2 );
                    }
                    else if ( index >= 0 )
                    {
                        // leading / was previously stripped
                        retValue = "/" + retValue;
                    }
                }
            }

            // special case: if there is a windows drive letter using |, switch to :
            if ( retValue.length() >= 2 && retValue.charAt( 1 ) == '|' )
            {
                retValue = retValue.charAt( 0 ) + ":" + retValue.substring( 2 );
            }
        }
        else
        {
            final String authorization = PathUtils.authorization( url );

            final int port = PathUtils.port( url );

            int pos = 0;

            if ( protocol.equalsIgnoreCase( "scm" ) )
            {
                pos = url.indexOf( ":", 4 ) + 1;
                pos = url.indexOf( ":", pos ) + 1;
            }
            else
            {
                int index = url.indexOf( "://" );
                if ( index != -1 )
                {
                    pos = index + 3;
                }
            }

            pos += authorization.length();

            if ( port != WagonConstants.UNKNOWN_PORT )
            {
                pos = pos + Integer.toString( port ).length() + 1;
            }

            if ( url.length() > pos )
            {
                retValue = url.substring( pos );
                if ( retValue.startsWith( ":" ) )
                {
                    // this is for :/ after the host
                    retValue = retValue.substring( 1 );
                }

                // one module may be allowed in the path in CVS
                retValue = retValue.replace( ':', '/' );
            }
        }

        if ( retValue == null )
        {
            retValue = "/";
        }
        return retValue.trim();
    }