Method parseAttribute

java/org/apache/jasper/compiler/Parser.java:185–230

Attribute ::= Name S? Eq S? ( '"<%=' RTAttributeValueDouble | '"' AttributeValueDouble | "'<%=" RTAttributeValueSingle | "'" AttributeValueSingle } Note: JSP and XML spec does not allow while spaces around Eq. It is added to be backward compatible with Tomcat, and with other xml parsers.

(AttributesImpl attrs)

     * and with other xml parsers.
     */
    private boolean parseAttribute(AttributesImpl attrs) throws JasperException {

        // Get the qualified name
        String qName = parseName();
        if (qName == null) {
            return false;
        }

        boolean ignoreEL = pageInfo.isELIgnored();

        // Determine prefix and local name components
        String localName = qName;
        String uri = "";
        int index = qName.indexOf(':');
        if (index != -1) {
            String prefix = qName.substring(0, index);
            uri = pageInfo.getURI(prefix);
            if (uri == null) {
                err.jspError(reader.mark(), "jsp.error.attribute.invalidPrefix", prefix);
            }
            localName = qName.substring(index + 1);
        }

        reader.skipSpaces();
        if (!reader.matches("=")) {
            err.jspError(reader.mark(), "jsp.error.attribute.noequal");
        }

        reader.skipSpaces();
        char quote = (char) reader.nextChar();
        if (quote != '\'' && quote != '"') {
            err.jspError(reader.mark(), "jsp.error.attribute.noquote");
        }

        String watchString = "";
        if (reader.matches("<%=")) {
            watchString = "%>";
            // Can't embed EL in a script expression
            ignoreEL = true;
        }
        watchString = watchString + quote;

        String attrValue = parseAttributeValue(qName, watchString, ignoreEL);
        attrs.addAttribute(uri, localName, qName, "CDATA", attrValue);
        return true;
    }

    /**
     * Name ::= (Letter | '_' | ':') (Letter | Digit | '.' | '_' | '-' | ':')*