Method decodeEntity

vm/JavaAPI/src/java/net/URIHelper.java:149–174

Decode an HTML encoded entity. @param source @return 0 if the value is not an encoded entity

(String source)

	 * @return 0 if the value is not an encoded entity
	 */
	static char decodeEntity(String source) {
		if (source.length() < 4 || source.charAt(0) != HTML_ENTITY_START
				|| source.charAt(source.length() - 1) != HTML_ENTITY_TERMINATE) {
			return HTML_ENTITY_INVALID;
		}
		// Handle entities by value
		if (source.charAt(1) == HTML_ENTITY_RAWVALUE) {
			try {
				if (Character.toLowerCase(source.charAt(2)) == HTML_ENTITY_RAWHEXVALUE) {
					return (char) Integer.parseInt(source.substring(3, 4), 16);
				} else {
					return (char) Integer.parseInt(source.substring(2, 3), 10);
				}
			} catch (NumberFormatException nfe) {
				return HTML_ENTITY_INVALID;
			}
		}
		// Handle entities by alias
		source = source.toLowerCase();
		for (int i = 0; i < HTML_ENCODED_ENTITIES.length; i++) {
			if (source.equals(HTML_ENCODED_ENTITIES[i])) {
				return HTML_ENTITIES[i];
			}
		}
		return HTML_ENTITY_INVALID;
	}

	/**
	 * Encode an HTML entity.