org.mycore.common.content.transformer.MCRBibUtilsTransformer Maven / Gradle / Ivy
/*
* This file is part of *** M y C o R e ***
* See http://www.mycore.de/ for details.
*
* MyCoRe is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* MyCoRe is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MyCoRe. If not, see .
*/
package org.mycore.common.content.transformer;
import java.io.IOException;
import java.io.InputStream;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.mycore.common.MCRException;
import org.mycore.common.config.MCRConfiguration2;
import org.mycore.common.content.MCRContent;
import org.mycore.frontend.cli.MCRExternalProcess;
/**
* Transforms MCRContent by invoking an external BibUtils command.
* See http://www.scripps.edu/~cdputnam/software/bibutils/
* The BibUtils commands provide functionality to convert between
* RIS, Endnote, BibTeX, ISI web of science, Word 2007 bibliography format
* and MODS. For each transformer instance, the command must be specified,
* for example
*
* MCR.ContentTransformer.{ID}.Command=cmd.exe /c C:\\Java\\bibutils_4.12\\xml2bib.exe -b -w
*
* @author Frank L\u00FCtzenkirchen
*/
public class MCRBibUtilsTransformer extends MCRContentTransformer {
private static final Logger LOGGER = LogManager.getLogger();
/** The external Bibutils command to invoke */
private String command;
@Override
public void init(String id) {
super.init(id);
command = MCRConfiguration2.getStringOrThrow("MCR.ContentTransformer." + id + ".Command");
}
@Override
public MCRContent transform(MCRContent source) throws IOException {
try {
MCRContent export = export(source);
export.setLastModified(source.lastModified());
export.setMimeType(getMimeType());
return export;
} catch (RuntimeException | IOException e) {
throw e;
} catch (Exception e) {
throw new IOException(e);
}
}
private MCRContent export(MCRContent mods) {
String[] arguments = buildCommandArguments();
try (InputStream stdin = mods.getInputStream()) {
MCRExternalProcess ep = new MCRExternalProcess(stdin, arguments);
ep.run();
String errors = ep.getErrors();
if (!errors.isEmpty()) {
LOGGER.warn(errors);
}
return ep.getOutput();
} catch (Exception ex) {
String msg = "Exception invoking external command " + command;
throw new MCRException(msg, ex);
}
}
/**
* Builds the command arguments to invoke the external BibUtils command
*/
private String[] buildCommandArguments() {
LOGGER.info(command);
return command.split(" ");
}
}