Review

finding-5

org/w3c/www/http/HttpAccept.java

parse()

class HttpAccept {
    /**
     * parse.
     * @exception HttpParserException if parsing failed.
     */
    protected void parse()
	throws HttpParserException
    {
	ParseState ps = new ParseState(roff, rlen);
	// We need to do our own MIME type parsing, to avoid ambiguities !
	// Get the type:
	ps.separator  = (byte) '/';
	ps.spaceIsSep = false;
	if ( HttpParser.nextItem(raw, ps) < 0 )
	    error("Invalid Accept: has no type.");
	String type = new String(raw, 0, ps.start, ps.end-ps.start);
	// Get the subtype:
	ps.prepare();
	ps.separator = (byte) ';';
	if ( HttpParser.nextItem(raw, ps) < 0 )
	    error("Invalid accept: no subtype");
	String subtype = new String(raw, 0, ps.start, ps.end-ps.start);
	// Get the parameters:
	ParseState it = new ParseState();
	it.separator  = (byte) '=';
	it.spaceIsSep = false;
	ps.prepare();
	Vector  vparams = new Vector(4);
	Vector  vvalues = new Vector(4);
	boolean accept  = false;
	while (HttpParser.nextItem(raw, ps) >= 0) {
	    it.ioff   = ps.start;
	    it.bufend = ps.end;
	    if ( HttpParser.nextItem(raw, it) < 0 ) 
		error("Invalid parameter: no param name.");
	    // The Hack !
	    String param = new String(raw, 0, it.start, it.end-it.start);
	    if ( param.equalsIgnoreCase("q") ) {
		// Switching to accept-params
		accept = true;
		break ;
	    }
	    vparams.addElement(new String(raw, 0, it.start, it.end-it.start));
	    it.prepare();
	    if ( HttpParser.nextItem(raw, it) < 0 )
		error("Invalid parameter: no value.");
	    vvalues.addElement(new String(raw, 0, it.start, it.end-it.start));
	    ps.prepare();
	}
	if ( vparams.size() > 0 ) {
	    String pparams[] = new String[vparams.size()];
	    String pvalues[] = new String[pparams.length];
	    vparams.copyInto(pparams);
	    vvalues.copyInto(pvalues);
	    this.type = new MimeType(type, subtype, pparams, pvalues);
	} else {
	    this.type = new MimeType(type, subtype);
	}
	// Parse remaining accept parameters:
	if ( accept ) {
	    vparams.setSize(0);
	    vvalues.setSize(0);
	    // Hack to finish with the q parameter
	    it.prepare();
	    if ( HttpParser.nextItem(raw, it) < 0 )
		error("Invalid accept parameter: no value.");
	    vparams.addElement("q");
	    vvalues.addElement(new String(raw, 0, it.start, it.end-it.start));
	    it.prepare();
	    while (HttpParser.nextItem(raw, ps) >= 0) {
		it.ioff   = ps.start;
		it.bufend = ps.end;
		if ( HttpParser.nextItem(raw, it) < 0 )
		    error("Invalid accept parameter: no name.");
		vparams.addElement(new String(raw,0,it.start,it.end-it.start));
		it.prepare();
		if (HttpParser.nextItem(raw, it) < 0 )
		    error("Invalid accept parameter: no value.");
		vvalues.addElement(new String(raw,0,it.start,it.end-it.start));
		ps.prepare();
	    }
	    this.aparams = new String[vparams.size()];
	    this.avalues = new String[aparams.length];
	    vparams.copyInto(aparams);
	    vvalues.copyInto(avalues);
	}
    }

}