org.dhatim.fastexcel.reader.SST Maven / Gradle / Ivy
package org.dhatim.fastexcel.reader;
import javax.xml.stream.XMLStreamException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import static org.dhatim.fastexcel.reader.DefaultXMLInputFactory.factory;
class SST {
private static final SST EMPTY = new SST();
private final SimpleXmlReader reader;
private final List values = new ArrayList<>();
private SST() {
reader = null;
}
SST(InputStream in) throws XMLStreamException {
reader = new SimpleXmlReader(factory, in);
}
static SST fromInputStream(InputStream in) throws XMLStreamException {
return in == null ? EMPTY : new SST(in);
}
String getItemAt(int index) throws XMLStreamException {
if (reader == null) {
return null;
}
readUpTo(index);
return values.get(index);
}
private void readUpTo(int index) throws XMLStreamException {
while (index >= values.size()) {
reader.goTo("si");
StringBuilder sb = new StringBuilder();
while (reader.goTo(() -> reader.isStartElement("t")
|| reader.isStartElement("rPh")
|| reader.isEndElement("si"))) {
if (reader.isStartElement("t")) {
sb.append(reader.getValueUntilEndElement("t"));
} else if (reader.isEndElement("si")) {
break;
} else if (reader.isStartElement("rPh")) {
reader.goTo(() -> reader.isEndElement("rPh"));
}
}
values.add(sb.toString());
}
}
}