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package org.zwobble.mammoth;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import org.zwobble.mammoth.documents.DocumentElement;
import org.zwobble.mammoth.documents.HasChildren;
import org.zwobble.mammoth.documents.Paragraph;
import org.zwobble.mammoth.documents.Text;
import org.zwobble.mammoth.docx.DocxFile;
import org.zwobble.mammoth.docx.InMemoryDocxFile;
import org.zwobble.mammoth.docx.ZippedDocxFile;
import org.zwobble.mammoth.html.Html;
import org.zwobble.mammoth.results.Result;
import org.zwobble.mammoth.styles.*;
import org.zwobble.mammoth.styles.parsing.StyleMapParser;
import org.zwobble.mammoth.util.Casts;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Path;
import java.util.List;
import java.util.Optional;
import java.util.zip.ZipFile;
import static org.zwobble.mammoth.docx.DocumentReader.readDocument;
import static org.zwobble.mammoth.util.MammothLists.list;
public class Mammoth {
public static class Options {
public static final Options DEFAULT = new Options("", false);
private final String idPrefix;
private final boolean preserveEmptyParagraphs;
public Options(String idPrefix, boolean preserveEmptyParagraphs) {
this.idPrefix = idPrefix;
this.preserveEmptyParagraphs = preserveEmptyParagraphs;
}
public Options idPrefix(String prefix) {
return new Options(prefix, preserveEmptyParagraphs);
}
public Options preserveEmptyParagraphs() {
return new Options(idPrefix, true);
}
}
private static final StyleMap DEFAULT_STYLE_MAP = StyleMapParser.parse(ImmutableList.of(
"p.Heading1 => h1:fresh",
"p.Heading2 => h2:fresh",
"p.Heading3 => h3:fresh",
"p.Heading4 => h4:fresh",
"p[style-name='Heading 1'] => h1:fresh",
"p[style-name='Heading 2'] => h2:fresh",
"p[style-name='Heading 3'] => h3:fresh",
"p[style-name='Heading 4'] => h4:fresh",
"p[style-name='heading 1'] => h1:fresh",
"p[style-name='heading 2'] => h2:fresh",
"p[style-name='heading 3'] => h3:fresh",
"p[style-name='heading 4'] => h4:fresh",
"p[style-name='heading 4'] => h4:fresh",
"r[style-name='Strong'] => strong",
"p[style-name='footnote text'] => p",
"r[style-name='footnote reference'] =>",
"p[style-name='endnote text'] => p",
"r[style-name='endnote reference'] =>",
// LibreOffice
"p[style-name='Footnote'] => p",
"r[style-name='Footnote anchor'] =>",
"p[style-name='Endnote'] => p",
"r[style-name='Endnote anchor'] =>",
"p:unordered-list(1) => ul > li:fresh",
"p:unordered-list(2) => ul|ol > li > ul > li:fresh",
"p:unordered-list(3) => ul|ol > li > ul|ol > li > ul > li:fresh",
"p:unordered-list(4) => ul|ol > li > ul|ol > li > ul|ol > li > ul > li:fresh",
"p:unordered-list(5) => ul|ol > li > ul|ol > li > ul|ol > li > ul|ol > li > ul > li:fresh",
"p:ordered-list(1) => ol > li:fresh",
"p:ordered-list(2) => ul|ol > li > ol > li:fresh",
"p:ordered-list(3) => ul|ol > li > ul|ol > li > ol > li:fresh",
"p:ordered-list(4) => ul|ol > li > ul|ol > li > ul|ol > li > ol > li:fresh",
"p:ordered-list(5) => ul|ol > li > ul|ol > li > ul|ol > li > ul|ol > li > ol > li:fresh",
"r[style-name='Hyperlink'] =>",
"p[style-name='Normal'] => p:fresh"));
public static Result<String> convertToHtml(InputStream stream) throws IOException {
return convertToHtml(stream, Options.DEFAULT);
}
public static Result<String> convertToHtml(InputStream stream, Options options) throws IOException {
return withDocxFile(stream, zipFile ->
convertToHtml(Optional.empty(), zipFile, options));
}
public static Result<String> convertToHtml(File file) throws IOException {
return convertToHtml(file, Options.DEFAULT);
}
public static Result<String> convertToHtml(File file, Options options) throws IOException {
return withDocxFile(file, zipFile ->
convertToHtml(Optional.of(file.toPath()), zipFile, options));
}
private static Result<String> convertToHtml(Optional<Path> path, DocxFile zipFile, Options options) {
return readDocument(path, zipFile)
.flatMap(nodes -> DocumentConverter.convertToHtml(options.idPrefix, options.preserveEmptyParagraphs, DEFAULT_STYLE_MAP, nodes))
.map(Html::stripEmpty)
.map(Html::collapse)
.map(Html::write);
}
public static Result<String> extractRawText(File file) throws IOException {
return withDocxFile(file, zipFile ->
readDocument(Optional.of(file.toPath()), zipFile)
.map(Mammoth::extractRawTextOfChildren));
}
private static <T> T withDocxFile(File file, Function<DocxFile, T> function) throws IOException {
try (DocxFile zipFile = new ZippedDocxFile(new ZipFile(file))) {
return function.apply(zipFile);
}
}
private static <T> T withDocxFile(InputStream stream, Function<DocxFile, T> function) throws IOException {
try (DocxFile zipFile = InMemoryDocxFile.fromStream(stream)) {
return function.apply(zipFile);
}
}
private static String extractRawTextOfChildren(HasChildren parent) {
return extractRawText(parent.getChildren());
}
private static String extractRawText(List<DocumentElement> nodes) {
return String.join("", Iterables.transform(nodes, node -> extractRawText(node)));
}
private static String extractRawText(DocumentElement node) {
return Casts.tryCast(Text.class, node)
.map(Text::getValue)
.orElseGet(() -> {
List<DocumentElement> children = Casts.tryCast(HasChildren.class, node)
.map(HasChildren::getChildren)
.orElse(list());
String suffix = node instanceof Paragraph ? "\n\n" : "";
return extractRawText(children) + suffix;
});
}
}
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