/**
* Skips the remainder of a comment. It is assumed that <!- is already read.
*
* @param reader the reader
* @throws java.io.IOException if an error occurred reading the data
*/
static void skipComment(IXMLReader reader) throws IOException, XMLParseException {
if (reader.read() != '-') {
XMLUtil.errorExpectedInput(reader.getSystemID(), reader.getLineNr(), "<!--");
}
int dashesRead = 0;
for (; ; ) {
char ch = reader.read();
switch (ch) {
case '-':
dashesRead++;
break;
case '>':
if (dashesRead == 2) {
return;
}
dashesRead = 0;
break;
default:
dashesRead = 0;
}
}
}
/**
* Reads a character from the reader disallowing entities.
*
* @param reader the reader
* @param entityChar the escape character (& or %) used to indicate an entity
*/
static char readChar(IXMLReader reader, char entityChar) throws IOException, XMLParseException {
String str = XMLUtil.read(reader, entityChar);
char ch = str.charAt(0);
if (ch == entityChar) {
XMLUtil.errorUnexpectedEntity(reader.getSystemID(), reader.getLineNr(), str);
}
return ch;
}
/**
* Processes an entity.
*
* @param entity the entity
* @param reader the reader
* @param entityResolver the entity resolver
* @throws java.io.IOException if an error occurred reading the data
*/
static void processEntity(String entity, IXMLReader reader, IXMLEntityResolver entityResolver)
throws IOException, XMLParseException {
entity = entity.substring(1, entity.length() - 1);
Reader entityReader = entityResolver.getEntity(reader, entity);
if (entityReader == null) {
XMLUtil.errorInvalidEntity(reader.getSystemID(), reader.getLineNr(), entity);
}
boolean externalEntity = entityResolver.isExternalEntity(entity);
reader.startNewStream(entityReader, !externalEntity);
}
/**
* Retrieves a delimited string from the data.
*
* @param reader the reader
* @param entityChar the escape character (& or %)
* @param entityResolver the entity resolver
* @throws java.io.IOException if an error occurred reading the data
*/
static String scanString(IXMLReader reader, char entityChar, IXMLEntityResolver entityResolver)
throws IOException, XMLParseException {
StringBuffer result = new StringBuffer();
int startingLevel = reader.getStreamLevel();
char delim = reader.read();
if ((delim != '\'') && (delim != '"')) {
XMLUtil.errorExpectedInput(reader.getSystemID(), reader.getLineNr(), "delimited string");
}
for (; ; ) {
String str = XMLUtil.read(reader, entityChar);
char ch = str.charAt(0);
if (ch == entityChar) {
if (str.charAt(1) == '#') {
result.append(XMLUtil.processCharLiteral(str));
} else {
XMLUtil.processEntity(str, reader, entityResolver);
}
} else if (ch == '&') {
reader.unread(ch);
str = XMLUtil.read(reader, '&');
if (str.charAt(1) == '#') {
result.append(XMLUtil.processCharLiteral(str));
} else {
result.append(str);
}
} else if (reader.getStreamLevel() == startingLevel) {
if (ch == delim) {
break;
} else if ((ch == 9) || (ch == 10) || (ch == 13)) {
result.append(' ');
} else {
result.append(ch);
}
} else {
result.append(ch);
}
}
return result.toString();
}
