SegmentationReader.java
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package ipipan.clarin.tei.impl.io.read;
import ipipan.clarin.tei.api.entities.AnnotationLayer;
import ipipan.clarin.tei.api.entities.TEIParagraph;
import ipipan.clarin.tei.api.entities.TEISegment;
import ipipan.clarin.tei.api.entities.TEISentence;
import ipipan.clarin.tei.api.exceptions.TEIException;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.xml.stream.XMLStreamException;
/**
*
* @author mlenart
*/
class SegmentationReader extends BodyReader {
private final static Pattern correspPattern = Pattern
.compile("(?:text(?:_structure)?\\.xml\\#)?string-range\\(([a-zA-Z_0-9\\.\\-]+),((?:[0-9]+,)?[0-9]+),([1-9][0-9]*)\\)");
SegmentationReader(InWrapper in) {
super(in);
}
@Override
protected void readNextParagraph(TEIParagraph par) throws TEIException {
try {
List<TEISentence> sents = new ArrayList<TEISentence>();
while (!in.isStartParagraph()) {
in.next();
}
String parId = in.getXmlId();
in.nextTag();
int lastOffset = -1;
while (!in.isEnd()) {
in.requireStart("s");
sents.add(readNextSent(par, lastOffset));
TEISegment lastSeg = getLastSegment(sents);
lastOffset = lastSeg.getOffset() + lastSeg.getLength();
in.nextTag();
}
par.setSentences(sents);
par.setId(AnnotationLayer.SEGMENTATION, parId);
} catch (Exception ex) {
throw new TEIException("Error in segmentation: " + ex.getMessage(),
ex);
}
}
private TEISentence readNextSent(TEIParagraph par, int lastOffset)
throws XMLStreamException, TEIException {
String sentId = in.getXmlId();
List<TEISegment> segs = new ArrayList<TEISegment>();
in.nextTag();
int currLastOffset = lastOffset;
while (!in.isEnd()) {
if (in.isStart("seg")) {
segs.add(readNextSegment(par, currLastOffset));
} else if (in.isStart("choice")) {
segs.addAll(readChoice(par, currLastOffset));
} else {
in.fail("seg or choice tag start");
}
TEISegment lastSeg = segs.get(segs.size() - 1);
currLastOffset = lastSeg.getOffset() + lastSeg.getLength();
in.nextTag();
}
return ef.createSentence(sentId, segs);
}
private List<TEISegment> readChoice(TEIParagraph par, int lastOffset)
throws XMLStreamException, TEIException {
List<TEISegment> res = new LinkedList<TEISegment>();
int choiceNum = 0;
in.nextTag();
while (!in.isEnd()) {
if (in.isStart("seg")) {
res.add(readNextSegment(par, lastOffset));
} else if (in.isStart("paren")) {
res.addAll(readParen(par, choiceNum, lastOffset));
} else {
in.fail("seg or nkjp:paren start tag");
}
choiceNum++;
in.nextTag();
}
return res;
}
private List<TEISegment> readParen(TEIParagraph par, int choiceNum,
int lastOffset) throws XMLStreamException, TEIException {
List<TEISegment> res = new LinkedList<TEISegment>();
in.nextTag();
int currLastOffset = lastOffset;
while (!in.isEnd()) {
in.requireStart("seg");
TEISegment seg = readNextSegment(par, currLastOffset);
seg.setChoiceNum(choiceNum);
res.add(seg);
currLastOffset = seg.getOffset() + seg.getLength();
in.nextTag();
}
return res;
}
private TEISegment readNextSegment(TEIParagraph par, int lastOffset)
throws XMLStreamException, TEIException {
String id = in.getXmlId();
// boolean nps = in.getBoolNKJPAttr("nps");
boolean rejected = in.getBoolNKJPAttr("rejected");
in.requireAttr("corresp");
String corresp = in.getAttr("corresp");
Matcher m = correspPattern.matcher(corresp);
if (!m.find()) {
throw new TEIException(String.format(
"Invalid corresp: '%s' at %s:%s", corresp, in.getLocation()
.getLineNumber(), in.getLocation()
.getColumnNumber()));
}
String parId = m.group(1);
TEIParagraph correspPar = par.getId().equals(parId) ? par : par
.getSubparagraph(parId);
int offset = parseOffset(m.group(2));
int length = Integer.parseInt(m.group(3));
boolean nps = offset == lastOffset;
in.nextTag();
in.requireEnd();
TEISegment seg = ef.createSegment(correspPar, id, offset, length, nps);
seg.setRejected(rejected);
return seg;
}
private int parseOffset(String offsetStr) {
offsetStr = offsetStr.replace(",", "");
return Integer.parseInt(offsetStr);
}
private TEISegment getLastSegment(List<TEISentence> sents) {
TEISentence lastSent = sents.get(sents.size() - 1);
return lastSent.getChosenSegments().get(
lastSent.getChosenSegments().size() - 1);
}
}