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package org.zwobble.mammoth.internal;
import org.zwobble.mammoth.internal.archives.Archive;
import org.zwobble.mammoth.internal.archives.InMemoryArchive;
import org.zwobble.mammoth.internal.archives.ZippedArchive;
import org.zwobble.mammoth.internal.conversion.DocumentToHtml;
import org.zwobble.mammoth.internal.conversion.DocumentToHtmlOptions;
import org.zwobble.mammoth.internal.conversion.RawText;
import org.zwobble.mammoth.internal.docx.EmbeddedStyleMap;
import org.zwobble.mammoth.internal.html.Html;
import org.zwobble.mammoth.internal.results.InternalResult;
import org.zwobble.mammoth.internal.styles.StyleMap;
import org.zwobble.mammoth.internal.styles.parsing.StyleMapParser;
import org.zwobble.mammoth.internal.util.PassThroughException;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Path;
import java.util.Optional;
import java.util.function.Function;
import static org.zwobble.mammoth.internal.docx.DocumentReader.readDocument;
public class InternalDocumentConverter {
private final DocumentToHtmlOptions options;
public InternalDocumentConverter(DocumentToHtmlOptions options) {
this.options = options;
}
public InternalResult<String> convertToHtml(InputStream stream) throws IOException {
return PassThroughException.unwrap(() ->
withDocxFile(stream, zipFile ->
convertToHtml(Optional.empty(), zipFile)));
}
public InternalResult<String> convertToHtml(File file) throws IOException {
return PassThroughException.unwrap(() ->
withDocxFile(file, zipFile ->
convertToHtml(Optional.of(file.toPath()), zipFile)));
}
private InternalResult<String> convertToHtml(Optional<Path> path, Archive zipFile) {
Optional<StyleMap> styleMap = readEmbeddedStyleMap(zipFile).map(StyleMapParser::parse);
DocumentToHtmlOptions conversionOptions = styleMap.map(options::addEmbeddedStyleMap).orElse(options);
return readDocument(path, zipFile)
.flatMap(nodes -> DocumentToHtml.convertToHtml(nodes, conversionOptions))
.map(Html::stripEmpty)
.map(Html::collapse)
.map(Html::write);
}
private Optional<String> readEmbeddedStyleMap(Archive zipFile) {
return PassThroughException.wrap(() -> EmbeddedStyleMap.readStyleMap(zipFile));
}
public InternalResult<String> extractRawText(InputStream stream) throws IOException {
return PassThroughException.unwrap(() ->
withDocxFile(stream, zipFile ->
extractRawText(Optional.empty(), zipFile)));
}
public InternalResult<String> extractRawText(File file) throws IOException {
return PassThroughException.unwrap(() ->
withDocxFile(file, zipFile ->
extractRawText(Optional.of(file.toPath()), zipFile)));
}
private InternalResult<String> extractRawText(Optional<Path> path, Archive zipFile) {
return readDocument(path, zipFile)
.map(RawText::extractRawText);
}
private static <T> T withDocxFile(File file, Function<Archive, T> function) throws IOException {
try (Archive zipFile = new ZippedArchive(file)) {
return function.apply(zipFile);
}
}
private static <T> T withDocxFile(InputStream stream, Function<Archive, T> function) throws IOException {
try (Archive zipFile = InMemoryArchive.fromStream(stream)) {
return function.apply(zipFile);
}
}
}
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