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package org.zwobble.mammoth;
import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableBiMap;
import com.google.common.collect.ImmutableMap;
import org.zwobble.mammoth.documents.*;
import org.zwobble.mammoth.docx.BodyXmlReader;
import org.zwobble.mammoth.docx.DocumentXmlReader;
import org.zwobble.mammoth.docx.Styles;
import org.zwobble.mammoth.xml.XmlElement;
import org.zwobble.mammoth.xml.parsing.XmlParser;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import static com.google.common.collect.Iterables.transform;
public class Mammoth {
private static ImmutableBiMap<String, String> XML_NAMESPACES = ImmutableBiMap.<String, String>builder()
.put("w", "http://schemas.openxmlformats.org/wordprocessingml/2006/main")
.put("wp", "http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing")
.put("a", "http://schemas.openxmlformats.org/drawingml/2006/main")
.put("pic", "http://schemas.openxmlformats.org/drawingml/2006/picture")
.put("content-types", "http://schemas.openxmlformats.org/package/2006/content-types")
.put("r", "http://schemas.openxmlformats.org/officeDocument/2006/relationships")
.put("relationships", "http://schemas.openxmlformats.org/package/2006/relationships")
.put("v", "urn:schemas-microsoft-com:vml")
.put("mc", "http://schemas.openxmlformats.org/markup-compatibility/2006")
.put("office-word", "urn:schemas-microsoft-com:office:word")
.build();
public static String convertToHtml(File file) {
try (ZipFile zipFile = new ZipFile(file)) {
ZipEntry entry = zipFile.getEntry("word/document.xml");
XmlElement documentXml = parseXml(zipFile.getInputStream(entry));
Styles styles = new Styles(ImmutableMap.of(), ImmutableMap.of());
Document document = new DocumentXmlReader(new BodyXmlReader(styles)).readElement(documentXml);
return convertToHtml(document);
} catch (IOException e) {
throw new UnsupportedOperationException("Should return a result of failure");
}
}
private static String convertToHtml(Document document) {
return convertChildrenToHtml(document);
}
private static String convertChildrenToHtml(HasChildren element) {
return Joiner.on("").join(transform(
element.getChildren(),
Mammoth::convertToHtml));
}
private static String convertToHtml(DocumentElement element) {
return element.accept(new DocumentElementVisitor<String>() {
@Override
public String visit(ParagraphElement paragraph) {
String content = convertChildrenToHtml(paragraph);
if (content.isEmpty()) {
return "";
} else {
return "<p>" + content + "</p>";
}
}
@Override
public String visit(RunElement run) {
return convertChildrenToHtml(run);
}
@Override
public String visit(TextElement text) {
return text.getValue();
}
});
}
private static XmlElement parseXml(InputStream inputStream) {
return new XmlParser(XML_NAMESPACES).parseStream(inputStream);
}
}
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