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TranslationFileServiceImpl.java
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TranslationFileServiceImpl.java
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/*
* Copyright 2010, Red Hat, Inc. and individual contributors as indicated by the
* @author tags. See the copyright.txt file in the distribution for a full
* listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This software 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA, or see the FSF
* site: http://www.fsf.org.
*/
package org.zanata.service.impl;
import org.apache.commons.io.IOUtils;
import org.jboss.seam.annotations.AutoCreate;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.xml.sax.InputSource;
import org.zanata.adapter.FileFormatAdapter;
import org.zanata.adapter.PlainTextAdapter;
import org.zanata.adapter.po.PoReader2;
import org.zanata.common.LocaleId;
import org.zanata.exception.ZanataServiceException;
import org.zanata.rest.dto.resource.Resource;
import org.zanata.rest.dto.resource.TranslationsResource;
import org.zanata.service.TranslationFileService;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import static org.jboss.seam.ScopeType.STATELESS;
/**
* Default implementation of the TranslationFileService interface.
*
* @author Carlos Munoz <a href="mailto:camunoz@redhat.com">camunoz@redhat.com</a>
*/
@Name("translationFileServiceImpl")
@Scope(STATELESS)
@AutoCreate
public class TranslationFileServiceImpl implements TranslationFileService
{
public TranslationsResource parseTranslationFile(InputStream fileContents, String fileName)
{
if( fileName.endsWith(".po") )
{
try
{
return this.parsePoFile(fileContents);
}
catch (Exception e)
{
throw new ZanataServiceException("Invalid PO file contents on file: " + fileName);
}
}
else
{
throw new ZanataServiceException("Unsupported Translation file: " + fileName);
}
}
public Resource parseDocumentFile(InputStream fileContents, String path, String fileName)
{
if( fileName.endsWith(".pot") )
{
// remove the .pot extension
fileName = fileName.substring(0, fileName.lastIndexOf('.'));
try
{
return this.parsePotFile(fileContents, path, fileName);
}
catch (Exception e)
{
throw new ZanataServiceException("Invalid POT file contents on file: " + fileName);
}
}
else if (hasAdapterFor(fileName))
{
FileFormatAdapter adapter = getAdapterFor(fileName);
Resource doc = adapter.parseDocumentFile(fileContents, new LocaleId("en"));
path = convertToValidPath(path);
doc.setName(path + fileName);
return doc;
}
else
{
throw new ZanataServiceException("Unsupported Document file: " + fileName);
}
}
/**
* A valid path is either empty, or has a trailing slash and no leading slash.
*
* @param path
* @return valid path
*/
private String convertToValidPath(String path)
{
path = path.trim();
while( path.startsWith("/") )
{
path = path.substring(1);
}
if( path.length() > 0 && !path.endsWith("/") )
{
path = path.concat("/");
}
return path;
}
private TranslationsResource parsePoFile( InputStream fileContents )
{
PoReader2 poReader = new PoReader2();
return poReader.extractTarget(new InputSource(fileContents) );
}
private Resource parsePotFile( InputStream fileContents, String docPath, String fileName )
{
PoReader2 poReader = new PoReader2();
// assume english as source locale
Resource res = poReader.extractTemplate(new InputSource(fileContents), new LocaleId("en"), fileName);
docPath = convertToValidPath(docPath);
res.setName( docPath + fileName );
return res;
}
@Override
public boolean hasAdapterFor(String fileNameOrExtension)
{
String extension = extractExtension(fileNameOrExtension);
if (extension == null)
{
return false;
}
else
{
// TODO add real mapping
return extension.equals("txt");
}
}
@Override
public FileFormatAdapter getAdapterFor(String fileNameOrExtension)
{
String extension = extractExtension(fileNameOrExtension);
if (extension == null)
{
return null;
}
else
{
// TODO add real mapping
if (extension.equals("txt"))
{
return new PlainTextAdapter();
}
else
{
return null;
}
}
}
@Override
public String extractExtension(String fileNameOrExtension)
{
if (fileNameOrExtension == null || fileNameOrExtension.length() == 0 || fileNameOrExtension.endsWith("."))
{
// could throw exception here
return null;
}
String extension;
if (fileNameOrExtension.contains("."))
{
extension = fileNameOrExtension.substring(fileNameOrExtension.lastIndexOf('.') + 1);
}
else
{
extension = fileNameOrExtension;
}
return extension;
}
private static final String DOCUMENT_FILE_PERSIST_DIRECTORY = "/tmp/persisted/";
@Override
public void persistDocument(InputStream docContents, String projectSlug, String iterationSlug, String docPath, String docName)
{
OutputStream persistFile;
try
{
InputStream fileContents = docContents;
File file = createFileObject(projectSlug, iterationSlug, docPath, docName);
file.getParentFile().mkdirs();
file.createNewFile();
persistFile = new FileOutputStream(file);
IOUtils.copy(fileContents, persistFile);
persistFile.close();
fileContents.close();
}
catch (IOException e)
{
// FIXME throw more general exception (independent of implementation) on failure
e.printStackTrace();
}
}
@Override
public boolean hasPersistedDocument(String projectSlug, String iterationSlug, String docPath, String docName)
{
File file = createFileObject(projectSlug, iterationSlug, docPath, docName);
return file.exists();
}
@Override
public InputStream streamDocument(String projectSlug, String iterationSlug, String docPath, String docName)
{
File file = createFileObject(projectSlug, iterationSlug, docPath, docName);
InputStream fileContents;
try
{
fileContents = new FileInputStream(file);
}
catch (FileNotFoundException e)
{
return null;
}
return fileContents;
}
private File createFileObject(String projectSlug, String iterationSlug, String docPath, String docName)
{
// make sure docPath is the correct structure (empty OR no slash at beginning, slash at end)
docPath = docPath.trim();
while( docPath.startsWith("/") )
{
docPath = docPath.substring(1);
}
if( docPath.length() > 0 && !docPath.endsWith("/") )
{
docPath = docPath.concat("/");
}
// TODO use config-specified or platform independent directory (or switch to database storage)
String pathname = DOCUMENT_FILE_PERSIST_DIRECTORY + projectSlug + File.separator + iterationSlug + File.separator + docPath + docName;
return new File(pathname);
}
}