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package org.zwobble.mammoth.internal.docx;
import org.zwobble.mammoth.internal.xml.XmlElement;
import org.zwobble.mammoth.internal.xml.XmlElementList;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import static org.zwobble.mammoth.internal.util.Maps.entry;
import static org.zwobble.mammoth.internal.util.Maps.toMap;
public class NumberingXml {
public static Numbering readNumberingXmlElement(XmlElement element, Styles styles) {
Map<String, Numbering.AbstractNum> abstractNums = readAbstractNums(element.findChildren("w:abstractNum"));
Map<String, Numbering.Num> nums = readNums(element.findChildren("w:num"));
return new Numbering(abstractNums, nums, styles);
}
private static Map<String, Numbering.AbstractNum> readAbstractNums(XmlElementList children) {
return toMap(children, NumberingXml::readAbstractNum);
}
private static Map.Entry<String, Numbering.AbstractNum> readAbstractNum(XmlElement element) {
// TODO: in python-mammoth, we allow None here. Check whether that's actually possible or not
String abstractNumId = element.getAttribute("w:abstractNumId");
Numbering.AbstractNum abstractNum = new Numbering.AbstractNum(
readAbstractNumLevels(element),
element.findChildOrEmpty("w:numStyleLink").getAttributeOrNone("w:val")
);
return entry(abstractNumId, abstractNum);
}
private static Map<String, Numbering.AbstractNumLevel> readAbstractNumLevels(XmlElement element) {
Map<String, Numbering.AbstractNumLevel> levels = new HashMap<>();
// Some malformed documents define numbering levels without an index, and
// reference the numbering using a w:numPr element without a w:ilvl child.
// To handle such cases, we assume a level of 0 as a fallback.
Optional<Numbering.AbstractNumLevel> levelWithoutIndex = Optional.empty();
for (XmlElement levelElement : element.findChildren("w:lvl")) {
Map.Entry<Optional<String>, Numbering.AbstractNumLevel> entry =
readAbstractNumLevel(levelElement);
if (entry.getKey().isPresent()) {
levels.put(entry.getKey().get(), entry.getValue());
} else {
levelWithoutIndex = Optional.of(entry.getValue());
}
}
if (levelWithoutIndex.isPresent() && !levels.containsKey(levelWithoutIndex.get().levelIndex())) {
levels.put(levelWithoutIndex.get().levelIndex(), levelWithoutIndex.get());
}
return levels;
}
private static Map.Entry<Optional<String>, Numbering.AbstractNumLevel> readAbstractNumLevel(XmlElement element) {
Optional<String> levelIndex = element.getAttributeOrNone("w:ilvl");
Optional<String> numFmt = element.findChildOrEmpty("w:numFmt").getAttributeOrNone("w:val");
boolean isOrdered = !numFmt.equals(Optional.of("bullet"));
Optional<String> paragraphStyleId = element.findChildOrEmpty("w:pStyle").getAttributeOrNone("w:val");
Numbering.AbstractNumLevel abstractNumLevel = new Numbering.AbstractNumLevel(
levelIndex.orElse("0"),
isOrdered,
paragraphStyleId
);
return entry(levelIndex, abstractNumLevel);
}
private static Map<String, Numbering.Num> readNums(XmlElementList numElements) {
return toMap(numElements, NumberingXml::readNum);
}
private static Map.Entry<String, Numbering.Num> readNum(XmlElement numElement) {
// TODO: in python-mammoth, we allow None here. Check whether that's actually possible or not
String numId = numElement.getAttribute("w:numId");
Optional<String> abstractNumId = numElement.findChildOrEmpty("w:abstractNumId").getAttributeOrNone("w:val");
return entry(numId, new Numbering.Num(abstractNumId));
}
}
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