org.odftoolkit.odfdom.pkg.OdfPackage Maven / Gradle / Ivy
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*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* Copyright 2008, 2010 Oracle and/or its affiliates. All rights reserved.
* Copyright 2009 IBM. All rights reserved.
*
* Use is subject to license terms.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at http://www.apache.org/licenses/LICENSE-2.0. You can also
* obtain a copy of the License at http://odftoolkit.org/docs/license.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
* See the License for the specific language governing permissions and
* limitations under the License.
*
************************************************************************/
package org.odftoolkit.odfdom.pkg;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Constructor;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.TreeSet;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.Pattern;
import java.util.zip.CRC32;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.URIResolver;
import org.apache.xerces.dom.DOMXSImplementationSourceImpl;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.odftoolkit.odfdom.doc.OdfDocument.OdfMediaType;
import org.odftoolkit.odfdom.doc.OdfDocument;
import org.odftoolkit.odfdom.pkg.manifest.Algorithm;
import org.odftoolkit.odfdom.pkg.manifest.EncryptionData;
import org.odftoolkit.odfdom.pkg.manifest.KeyDerivation;
import org.odftoolkit.odfdom.pkg.manifest.OdfFileEntry;
import org.w3c.dom.Document;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSOutput;
import org.w3c.dom.ls.LSSerializer;
import org.xml.sax.EntityResolver;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
/**
* OdfPackage represents the package view to an OpenDocument document. The
* OdfPackage will be created from an ODF document and represents a copy of the
* loaded document, where files can be inserted and deleted. The changes take
* effect, when the OdfPackage is being made persisted by save().
*/
public class OdfPackage implements Closeable {
// Static parts of file references
private static final String DOUBLE_DOT = "..";
private static final String DOT = ".";
private static final String SLASH = "/";
private static final String COLON = ":";
private static final String ENCODED_APOSTROPHE = "'";
private static final String ENCODED_QUOTATION = """;
private static final String EMPTY_STRING = "";
private static final String XML_MEDIA_TYPE = "text/xml";
// Search patterns to be used in RegEx expressions
private static final Pattern BACK_SLASH_PATTERN = Pattern.compile("\\\\");
private static final Pattern DOUBLE_SLASH_PATTERN = Pattern.compile("//");
private static final Pattern QUOTATION_PATTERN = Pattern.compile("\"");
private static final Pattern APOSTROPHE_PATTERN = Pattern.compile("'");
private static final Pattern CONTROL_CHAR_PATTERN = Pattern.compile("\\p{Cntrl}");
private static Set mCompressedFileTypes;
// some well known streams inside ODF packages
private String mMediaType;
private String mBaseURI;
private ZipHelper mZipFile;
private Resolver mResolver;
private Map mZipEntries;
private HashMap mOriginalZipEntries;
private Map mManifestEntries;
// All opened documents from the same package are cached (including the root document)
private Map mPkgDocuments;
// Three different incarnations of a package file/data
// save() will check 1) mPkgDoms, 2) if not check mMemoryFileCache
private HashMap mPkgDoms;
private HashMap mMemoryFileCache;
private ErrorHandler mErrorHandler;
private String mManifestVersion;
/* Commonly used files within the ODF Package */
public enum OdfFile {
/** The image directory is not defined by the OpenDocument standard, nevertheless the most spread ODF application OpenOffice.org is using the directory named "Pictures". */
IMAGE_DIRECTORY("Pictures"),
/** The "META-INF/manifest.xml" file is defined by the ODF 1.2 part 3 Package specification. This manifest is the 'content table' of the ODF package and describes the file entries of the ZIP including directories, but should not contain empty directories.*/
MANIFEST("META-INF/manifest.xml"),
/** The "mimetype" file is defined by the ODF 1.2 part 3 Package specification. It contains the mediatype string of the root document and must be the first file in the ZIP and must not be compressed. */
MEDIA_TYPE("mimetype");
private final String internalPath;
OdfFile(String internalPath) {
this.internalPath = internalPath;
}
public String getPath() {
return internalPath;
}
}
static {
mCompressedFileTypes = new HashSet();
String[] typelist = new String[]{"jpg", "gif", "png", "zip", "rar",
"jpeg", "mpe", "mpg", "mpeg", "mpeg4", "mp4", "7z", "ari",
"arj", "jar", "gz", "tar", "war", "mov", "avi"};
mCompressedFileTypes.addAll(Arrays.asList(typelist));
}
/**
* Creates the ODFPackage as an empty Package.
*/
private OdfPackage() {
mMediaType = null;
mResolver = null;
mPkgDocuments = new HashMap();
mPkgDoms = new HashMap();
mMemoryFileCache = new HashMap();
mManifestEntries = new HashMap();
// specify whether validation should be enabled and what SAX ErrorHandler should be used.
if (mErrorHandler == null) {
String errorHandlerProperty = System.getProperty("org.odftoolkit.odfdom.validation");
if (errorHandlerProperty != null) {
if (errorHandlerProperty.equalsIgnoreCase("true")) {
mErrorHandler = new DefaultErrorHandler();
Logger.getLogger(OdfPackage.class.getName()).info("Activated validation with default ErrorHandler!");
} else {
try {
Class cl = Class.forName(errorHandlerProperty);
Constructor ctor = cl.getDeclaredConstructor(new Class[]{});
mErrorHandler = (ErrorHandler) ctor.newInstance();
Logger.getLogger(OdfPackage.class.getName()).log(Level.INFO, "Activated validation with ErrorHandler:''{0}''!", errorHandlerProperty);
} catch (Exception ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, "Could not initiate validation with the given ErrorHandler: '" + errorHandlerProperty + "'", ex);
}
}
}
}
}
/**
* Creates an OdfPackage from the OpenDocument provided by a File.
*
*
* OdfPackage relies on the file being available for read access over the
* whole lifecycle of OdfPackage.
*
*
* @param pkgFile
* - a file representing the ODF document
* @throws java.lang.Exception
* - if the package could not be created
*/
private OdfPackage(File pkgFile) throws Exception {
this();
mBaseURI = getBaseURLFromFile(pkgFile);
initializeZip(new FileInputStream(pkgFile));
}
/**
* Creates an OdfPackage from the OpenDocument provided by a InputStream.
*
* Since an InputStream does not provide the arbitrary (non sequentiell)
* read access needed by OdfPackage, the InputStream is cached. This usually
* takes more time compared to the other constructors.
*
* @param packageStream - an inputStream representing the ODF package
* @param baseURI defining the base URI of ODF package.
* @param errorHandler - SAX ErrorHandler used for ODF validation
* @see #getErrorHandler
* @throws java.lang.Exception - if the package could not be created
* @see #getErrorHandler*
*/
private OdfPackage(InputStream packageStream, String baseURI, ErrorHandler errorHandler) throws Exception {
this(); // calling private constructor
mErrorHandler = errorHandler;
mBaseURI = baseURI;
initializeZip(packageStream);
}
/**
* Loads an OdfPackage from the given documentURL.
*
*
* OdfPackage relies on the file being available for read access over the
* whole lifecycle of OdfPackage.
*
*
* @param path
* - the documentURL to the ODF package
* @return the OpenDocument document represented as an OdfPackage
* @throws java.lang.Exception
* - if the package could not be loaded
*/
public static OdfPackage loadPackage(String path) throws Exception {
File pkgFile = new File(path);
return new OdfPackage(new FileInputStream(pkgFile), getBaseURLFromFile(pkgFile), null);
}
/**
* Loads an OdfPackage from the OpenDocument provided by a File.
*
*
* OdfPackage relies on the file being available for read access over the
* whole lifecycle of OdfPackage.
*
*
* @param pkgFile - the ODF Package
* @return the OpenDocument document represented as an OdfPackage
* @throws java.lang.Exception - if the package could not be loaded
*/
public static OdfPackage loadPackage(File pkgFile) throws Exception {
return new OdfPackage(new FileInputStream(pkgFile), getBaseURLFromFile(pkgFile), null);
}
/**
* Creates an OdfPackage from the given InputStream.
*
*
* Since an InputStream does not provide the arbitrary (non sequentiell)
* read access needed by OdfPackage, the InputStream is cached. This usually
* takes more time compared to the other loadPackage methods.
*
*
* @param packageStream
* - an inputStream representing the ODF package
* @return the OpenDocument document represented as an OdfPackage
* @throws java.lang.Exception
* - if the package could not be loaded
*/
public static OdfPackage loadPackage(InputStream packageStream)
throws Exception {
return new OdfPackage(packageStream, null, null);
}
/**
* Creates an OdfPackage from the given InputStream.
*
* OdfPackage relies on the file being available for read access over
* the whole lifecycle of OdfPackage.
*
* @param packageStream - an inputStream representing the ODF package
* @param baseURI allows to explicitly set the base URI from the document, As the URL can not be derived from a stream.
* In addition it is possible to set the baseURI to any arbitrary URI, e.g. an URN.
* One usage of the baseURI to describe the source of validation exception thrown by the ErrorHandler.
* @param errorHandler - SAX ErrorHandler used for ODF validation
* @throws java.lang.Exception - if the package could not be created
* @see #getErrorHandler
*/
public static OdfPackage loadPackage(InputStream packageStream, String baseURI, ErrorHandler errorHandler) throws Exception {
return new OdfPackage(packageStream, baseURI, errorHandler);
}
/**
* Loads an OdfPackage from the given File.
*
* OdfPackage relies on the file being available for read access over
* the whole lifecycle of OdfPackage.
* @param pkgFile - the ODF Package. A baseURL is being generated based on its location.
* @param errorHandler - SAX ErrorHandler used for ODF validation.
* @throws java.lang.Exception - if the package could not be created
* @see #getErrorHandler
*/
public static OdfPackage loadPackage(File pkgFile, ErrorHandler errorHandler) throws Exception {
return new OdfPackage(new FileInputStream(pkgFile), getBaseURLFromFile(pkgFile), errorHandler);
}
// Initialize using memory
private void initializeZip(InputStream odfStream) throws Exception {
ByteArrayOutputStream tempBuf = new ByteArrayOutputStream();
StreamHelper.transformStream(odfStream, tempBuf);
byte[] mTempByteBuf = tempBuf.toByteArray();
tempBuf.close();
if (mTempByteBuf.length < 3) {
OdfValidationException ve = new OdfValidationException(OdfPackageConstraint.PACKAGE_IS_NO_ZIP, getBaseURI());
if (mErrorHandler != null) {
mErrorHandler.fatalError(ve);
}
throw new IllegalArgumentException(ve);
}
mZipFile = new ZipHelper(this, mTempByteBuf);
readZip();
}
private void readZip() throws SAXException, IOException {
mZipEntries = new HashMap();
String firstEntryName = mZipFile.entriesToMap(mZipEntries);
if (mZipEntries.isEmpty()) {
OdfValidationException ve = new OdfValidationException(OdfPackageConstraint.PACKAGE_IS_NO_ZIP, getBaseURI());
if (mErrorHandler != null) {
mErrorHandler.fatalError(ve);
}
throw new IllegalArgumentException(ve);
} else {
// initialize the files of the package (fileEnties of Manifest)
parseManifest();
// initialize the package media type
initializeMediaType(firstEntryName);
// ToDo: Remove all META-INF/* files from the fileEntries of Manifest
mOriginalZipEntries = new HashMap();
mOriginalZipEntries.putAll(mZipEntries);
mZipEntries.remove(OdfPackage.OdfFile.MEDIA_TYPE.getPath());
mZipEntries.remove(OdfPackage.OdfFile.MANIFEST.getPath());
mZipEntries.remove("META-INF/");
if (mErrorHandler != null) {
validateManifest();
}
Iterator zipPaths = mZipEntries.keySet().iterator();
while (zipPaths.hasNext()) {
String internalPath = zipPaths.next();
// every resource aside the /META-INF/manifest.xml (and META-INF/ directory)
// and "mimetype" will be added as fileEntry
if (!internalPath.equals(OdfPackage.OdfFile.MANIFEST.getPath())
&& !internalPath.equals("META-INF/")
&& !internalPath.equals(OdfPackage.OdfFile.MEDIA_TYPE.getPath())) {
// aside "mediatype" and "META-INF/manifest"
// add manifest entry as to be described by a
ensureFileEntryExistence(internalPath);
}
}
}
}
/** Validates if all file entries exist in the ZIP and vice versa */
private void validateManifest() {
Set zipPaths = mZipEntries.keySet();
Set manifestPaths = mManifestEntries.keySet();
Set sharedPaths = new HashSet(zipPaths);
sharedPaths.retainAll(manifestPaths);
if (sharedPaths.size() < zipPaths.size()) {
Set zipPathSuperset = new HashSet(mZipEntries.keySet());
zipPathSuperset.removeAll(sharedPaths);
Set sortedSet = new TreeSet(zipPathSuperset);
Iterator iter = sortedSet.iterator();
String documentURL = getBaseURI();
String internalPath;
while (iter.hasNext()) {
internalPath = (String) iter.next();
if (!internalPath.endsWith(SLASH)) { // not for directories!
logValidationError(OdfPackageConstraint.MANIFEST_DOES_NOT_LIST_FILE, documentURL, internalPath);
}
}
}
if (sharedPaths.size() < manifestPaths.size()) {
Set zipPathSubset = new HashSet(mManifestEntries.keySet());
zipPathSubset.removeAll(sharedPaths);
// removing root directory
zipPathSubset.remove(SLASH);
// No directory are listed in a ZIP removing all directory with content
Iterator manifestOnlyPaths = zipPathSubset.iterator();
while (manifestOnlyPaths.hasNext()) {
String manifestOnlyPath = manifestOnlyPaths.next();
// assumption: all directories end with slash
if (manifestOnlyPath.endsWith(SLASH)) {
removeDirectory(manifestOnlyPath);
} else {
// if it is a nonexistent file
logValidationError(OdfPackageConstraint.MANIFEST_LISTS_NONEXISTENT_FILE, getBaseURI(), manifestOnlyPath);
mManifestEntries.remove(manifestOnlyPath);
}
}
}
// remove none document directories
Iterator sharedPathsIter = sharedPaths.iterator();
while (sharedPathsIter.hasNext()) {
String sharedPath = sharedPathsIter.next();
// assumption: all directories end with slash
if (sharedPath.endsWith(SLASH)) {
removeDirectory(sharedPath);
}
}
}
/** Removes directories without a mimetype (all none documents) */
private void removeDirectory(String path) {
if (path.endsWith(SLASH)) {
// Check if it is a sub-document?
// Our assumption: it is a document if it has a mimetype...
String dirMimeType = mManifestEntries.get(path).getMediaTypeString();
if (dirMimeType == null || EMPTY_STRING.equals(dirMimeType)) {
logValidationWarning(OdfPackageConstraint.MANIFEST_LISTS_DIRECTORY, getBaseURI(), path);
mManifestEntries.remove(path);
}
}
}
/** Reads the uncompressed "mimetype" file, which contains the package media/mimte type*/
private void initializeMediaType(String firstEntryName) {
ZipEntry mimetypeEntry = mZipEntries.get(OdfPackage.OdfFile.MEDIA_TYPE.getPath());
if (mimetypeEntry != null) {
if (mErrorHandler != null) {
validateMimeTypeEntry(mimetypeEntry, firstEntryName);
}
// get mediatype value of the root document/package from the mediatype file stream
String entryMediaType = getMediaTypeFromEntry(mimetypeEntry);
// get mediatype value of the root document/package from the manifest.xml
String manifestMediaType = getMediaTypeFromManifest();
// if a valid mediatype was set by the "mimetype" file
if (entryMediaType != null && !entryMediaType.equals(EMPTY_STRING)) {
// the root document's mediatype is taken from the "mimetype" file
mMediaType = entryMediaType;
if (mErrorHandler != null) {
// if the "mediatype" does exist, the "/META-INF/manifest.xml" have to contain a MIMETYPE for the root document);
if (manifestMediaType != null && !manifestMediaType.equals(EMPTY_STRING)) {
// if the two media-types are inconsistent
if (!entryMediaType.equals(manifestMediaType)) {
logValidationError(OdfPackageConstraint.MIMETYPE_DIFFERS_FROM_PACKAGE, getBaseURI(), CONTROL_CHAR_PATTERN.matcher(mMediaType).replaceAll(EMPTY_STRING), manifestMediaType);
}
} else { // if "mimetype" file exists, there have to be a mimetype in the manifest.xml for the root document (see ODF 1.2 part 3)
logValidationError(OdfPackageConstraint.MIMETYPE_WITHOUT_MANIFEST_MEDIATYPE, getBaseURI(), CONTROL_CHAR_PATTERN.matcher(mMediaType).replaceAll(EMPTY_STRING), manifestMediaType);
}
}
} else { // if there is no media-type was set by the "mimetype" file
// try as fall-back the mediatype of the root document from the manifest.xml
if (manifestMediaType != null && !manifestMediaType.equals(EMPTY_STRING)) {
// and used as fall-back for the mediatype of the package
mMediaType = manifestMediaType;
}
}
} else {
String manifestMediaType = getMediaTypeFromManifest();
if (manifestMediaType != null && !manifestMediaType.equals(EMPTY_STRING)) {
// if not mimetype file exists, the root document mediaType from the manifest.xml is taken
mMediaType = manifestMediaType;
}
if (mErrorHandler != null) {
logValidationWarning(OdfPackageConstraint.MIMETYPE_NOT_IN_PACKAGE, getBaseURI());
}
}
}
private void validateMimeTypeEntry(ZipEntry mimetypeEntry, String firstEntryName) {
if (mimetypeEntry.getMethod() != ZipEntry.STORED) {
logValidationError(OdfPackageConstraint.MIMETYPE_IS_COMPRESSED, getBaseURI());
}
if (mimetypeEntry.getExtra() != null) {
logValidationError(OdfPackageConstraint.MIMETYPE_HAS_EXTRA_FIELD, getBaseURI());
}
if (!OdfFile.MEDIA_TYPE.getPath().equals(firstEntryName)) {
logValidationError(OdfPackageConstraint.MIMETYPE_NOT_FIRST_IN_PACKAGE, getBaseURI());
}
}
/** @returns the media type of the root document from the manifest.xml */
private String getMediaTypeFromManifest() {
OdfFileEntry rootDocumentEntry = mManifestEntries.get(SLASH);
if (rootDocumentEntry != null) {
return rootDocumentEntry.getMediaTypeString();
} else {
return null;
}
}
/** @returns the media type of the root document from the manifest.xml */
private String getMediaTypeFromEntry(ZipEntry mimetypeEntry) {
String entryMediaType = null;
ByteArrayOutputStream out = new ByteArrayOutputStream();
try {
StreamHelper.transformStream(mZipFile.getInputStream(mimetypeEntry), out);
entryMediaType = new String(out.toByteArray(), 0, out.size(), "UTF-8");
} catch (Exception ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
} finally {
if (out != null) {
try {
out.close();
} catch (IOException ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
out = null;
}
}
return entryMediaType;
}
/**
* Insert an Odf document into the package at the given path.
* The path has to be a directory and will receive the MIME type of the OdfPackageDocument.
*
* @param doc the OdfPackageDocument to be inserted.
* @param internalPath
* path relative to the package root, where the document should be inserted.
*/
void cacheDocument(OdfPackageDocument doc, String internalPath) {
internalPath = normalizeDirectoryPath(internalPath);
updateFileEntry(ensureFileEntryExistence(internalPath), doc.getMediaTypeString());
mPkgDocuments.put(internalPath, doc);
}
/**
* Set the baseURI for this ODF package. NOTE: Should only be set during
* saving the package.
* @param baseURI defining the location of the package
*/
void setBaseURI(String baseURI) {
mBaseURI = baseURI;
}
/**
* @return The URI to the ODF package, usually the URL, where this ODF package is located.
* If the package has not URI NULL is returned.
* This is the case if the package was new created without an URI and not saved before.
*/
public String getBaseURI() {
return mBaseURI;
}
/**
* Returns on ODF documents based a given mediatype.
*
* @param internalPath path relative to the package root, where the document should be inserted.
* @return The ODF document, which mediatype dependends on the parameter or
* NULL if media type were not supported.
*/
public OdfPackageDocument loadDocument(String internalPath) {
OdfPackageDocument doc = getCachedDocument(internalPath);
if (doc == null) {
String mediaTypeString = getMediaTypeString();
// ToDo: Issue 265 - Remove dependency to higher layer by factory
OdfMediaType odfMediaType = OdfMediaType.getOdfMediaType(mediaTypeString);
if (odfMediaType == null) {
doc = new OdfPackageDocument(this, internalPath, mediaTypeString);
} else {
try {
String documentMediaType = getMediaTypeString(internalPath);
odfMediaType = OdfMediaType.getOdfMediaType(documentMediaType);
if (odfMediaType == null) {
return null;
}
// ToDo: Issue 265 - Remove dependency to higher layer by facotory
doc = OdfDocument.loadDocument(this, internalPath);
} catch (Exception ex) {
Logger.getLogger(OdfPackageDocument.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
return doc;
}
/**
* @deprecated This method is only added temporary as workaround for the IBM fork using different DOC classes.
* Until the registering of DOC documents to the PKG layer has been finished.
* @param internalPath
* path relative to the package root, where the document should be inserted.
* @return an already open OdfPackageDocument via its path, otherwise NULL.
*/
@Deprecated
public OdfPackageDocument getCachedDocument(String internalPath) {
internalPath = normalizeDirectoryPath(internalPath);
return mPkgDocuments.get(internalPath);
}
/**
* @param dom
* the DOM tree that has been parsed and should be added to the cache.
* @param internalPath
* path relative to the package root, where the XML of the DOM is located.
* @return an already open OdfPackageDocument via its path, otherwise NULL.
*/
void cacheDom(Document dom, String internalPath) {
internalPath = normalizeFilePath(internalPath);
this.insert(dom, internalPath, null);
}
/**
* @param internalPath
* path relative to the package root, where the document should be inserted.
* @return an already open W3C XML Documenet via its path, otherwise NULL.
*/
Document getCachedDom(String internalPath) {
internalPath = normalizeFilePath(internalPath);
return this.mPkgDoms.get(internalPath);
}
/**
* @return a map with all open W3C XML documents with their internal package path as key.
*/
Map getCachedDoms() {
return this.mPkgDoms;
}
/**
* Removes a document from the package via its path. Independent if it was already opened or not.
* @param internalPath
* path relative to the package root, where the document should be removed.
*/
public void removeDocument(String internalPath) {
// Note: the EMPTY String for rrot path will be exchanged to a SLASH
internalPath = normalizeDirectoryPath(internalPath);
try {
// get all files of the package
Set allPackageFileNames = getFilePaths();
// If the document is the root document
// the "/" representing the root document is outside the manifest.xml in the API an empty path
// still normalizeDirectoryPath() already exchanged the EMPTY_STRING to SLASH
if (internalPath.equals(SLASH)) {
for (String entryName : allPackageFileNames) {
remove(entryName);
}
remove(SLASH);
} else {
//remove all the stream of the directory, such as pictures
List directoryEntryNames = new ArrayList();
for (String entryName : allPackageFileNames) {
if (entryName.startsWith(internalPath)) {
directoryEntryNames.add(entryName);
}
}
for (String entryName : directoryEntryNames) {
remove(entryName);
}
remove(internalPath);
}
} catch (Exception ex) {
Logger.getLogger(OdfPackageDocument.class.getName()).log(Level.SEVERE, null, ex);
}
}
/** @return all currently opened OdfPackageDocument of this OdfPackage */
Set getCachedPackageDocuments() {
return mPkgDocuments.keySet();
}
public OdfPackageDocument getRootDocument() {
return mPkgDocuments.get(OdfPackageDocument.ROOT_DOCUMENT_PATH);
}
/**
* Get the media type of the ODF file or document (ie. a directory).
* A directory with a mediatype can be loaded as OdfPackageDocument.
* Note: A directoy is represented by in the package as directory with media type
* @param internalPath within the package of the file or document.
* @return the mediaType for the resource of the given path
*/
public String getMediaTypeString(String internalPath) {
String mediaType = null;
if (internalPath != null) {
if (internalPath.equals(EMPTY_STRING) || internalPath.equals(SLASH)) {
return mMediaType;
} else {
mediaType = getMediaTypeFromEntry(normalizePath(internalPath));
// if no file was found, look for a normalized directory name
if (mediaType == null) {
mediaType = getMediaTypeFromEntry(normalizeDirectoryPath(internalPath));
}
}
}
return mediaType;
}
private String getMediaTypeFromEntry(String internalPath) {
OdfFileEntry entry = getFileEntry(internalPath);
// if the document is not in the package, the return is NULL
if (entry != null) {
return entry.getMediaTypeString();
} else {
return null;
}
}
/**
* Get the media type of the ODF package (equal to media type of ODF root
* document)
*
* @return the mediaType string of this ODF package
*/
public String getMediaTypeString() {
return mMediaType;
}
/**
* Set the media type of the ODF package (equal to media type of ODF root
* document)
*
* @param mediaType
* string of this ODF package
*/
void setMediaTypeString(String mediaType) {
mMediaType = mediaType;
}
/**
*
* Get an OdfFileEntry for the internalPath NOTE: This method should be
* better moved to a DOM inherited Manifest class
*
* @param internalPath
* The relative package path within the ODF package
* @return The manifest file entry will be returned.
*/
public OdfFileEntry getFileEntry(String internalPath) {
internalPath = normalizeFilePath(internalPath);
return mManifestEntries.get(internalPath);
}
/**
* Get a OdfFileEntries from the manifest file (i.e. /META/manifest.xml")
*
* @return The paths of the manifest file entries will be returned.
*/
public Set getFilePaths() {
return mManifestEntries.keySet();
}
/**
*
* Check existence of a file in the package.
*
* @param internalPath
* The relative package documentURL within the ODF package
* @return True if there is an entry and a file for the given documentURL
*/
public boolean contains(String internalPath) {
internalPath = normalizeFilePath(internalPath);
return mManifestEntries.containsKey(internalPath);
}
/**
* Save the package to given documentURL.
*
* @param odfPath
* - the path to the ODF package destination
* @throws java.lang.Exception
* - if the package could not be saved
*/
public void save(String odfPath) throws Exception {
File f = new File(odfPath);
save(f);
}
/**
* Save package to a given File. After saving it is still necessary to close
* the package to have again full access about the file.
*
* @param pkgFile
* - the File to save the ODF package to
* @throws java.lang.Exception
* - if the package could not be saved
*/
public void save(File pkgFile) throws Exception {
String baseURL = getBaseURLFromFile(pkgFile);
// if (baseURL.equals(mBaseURI)) {
// // save to the same file: cache everything first
// // ToDo: (Issue 219 - PackageRefactoring) --maybe it's better to write to a new file and copy that
// // to the original one - would be less memory footprint
// cacheContent();
// }
FileOutputStream fos = new FileOutputStream(pkgFile);
save(fos, baseURL);
}
public void save(OutputStream odfStream) throws Exception {
save(odfStream, null);
}
/**
* Save an ODF document to the OutputStream.
*
* @param odfStream
* - the OutputStream to insert content to
* @param baseURL defining the location of the package
* @throws java.lang.Exception
* - if the package could not be saved
*/
private void save(OutputStream odfStream, String baseURL) {
try {
mBaseURI = baseURL;
OdfFileEntry rootEntry = mManifestEntries.get(SLASH);
if (rootEntry == null) {
rootEntry = new OdfFileEntry(SLASH, mMediaType);
mManifestEntries.put(SLASH, rootEntry);
} else {
rootEntry.setMediaTypeString(mMediaType);
}
ZipOutputStream zos = new ZipOutputStream(odfStream);
// remove mediatype path and use it as first
this.mManifestEntries.remove(OdfFile.MEDIA_TYPE.getPath());
Iterator it = mManifestEntries.keySet().iterator();
String path = null;
boolean isFirstFile = true;
CRC32 crc = new CRC32();
long modTime = (new java.util.Date()).getTime();
while (it.hasNext() || isFirstFile) {
try {
byte[] data = null;
// ODF requires the "mimetype" file to be at first in the package
if (isFirstFile) {
isFirstFile = false;
// create "mimetype" from current attribute value
data = mMediaType.getBytes("UTF-8");
createZipEntry(OdfFile.MEDIA_TYPE.getPath(), data, zos, modTime, crc);
// Create "META-INF/" directory
createZipEntry("META-INF/", null, zos, modTime, crc);
// Create "META-INF/manifest.xml" file
data = getBytes(OdfFile.MANIFEST.getPath());
createZipEntry(OdfFile.MANIFEST.getPath(), data, zos, modTime, crc);
} else {
path = it.next();
// not interested to reuse previous mediaType nor manifest from ZIP
if (!path.endsWith(SLASH) && !path.equals(OdfPackage.OdfFile.MANIFEST.getPath())
&& !path.equals(OdfPackage.OdfFile.MEDIA_TYPE.getPath())) {
data = getBytes(path);
createZipEntry(path, data, zos, modTime, crc);
}
}
} catch (IOException ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
}
zos.close();
odfStream.flush();
} catch (IOException ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
}
private void createZipEntry(String path, byte[] data, ZipOutputStream zos, long modTime, CRC32 crc) {
ZipEntry ze = null;
try {
ze = mZipEntries.get(path);
if (ze == null) {
ze = new ZipEntry(path);
}
ze.setTime(modTime);
if (fileNeedsCompression(path)) {
ze.setMethod(ZipEntry.DEFLATED);
} else {
ze.setMethod(ZipEntry.STORED);
}
crc.reset();
if (data != null) {
ze.setSize(data.length);
crc.update(data);
ze.setCrc(crc.getValue());
} else {
ze.setSize(0);
ze.setCrc(0);
}
ze.setCompressedSize(-1);
zos.putNextEntry(ze);
if (data != null) {
zos.write(data, 0, data.length);
}
zos.closeEntry();
mZipEntries.put(path, ze);
} catch (IOException ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
}
/**
* Determines if a file have to be compressed.
* @param internalPath the file location
* @return true if the file needs compression, false, otherwise
*/
private boolean fileNeedsCompression(String internalPath) {
boolean result = true;
// ODF spec does not allow compression of "./mimetype" file
if (internalPath.equals(OdfPackage.OdfFile.MEDIA_TYPE.getPath())) {
return false;
}
// see if the file was already compressed
if (internalPath.lastIndexOf(".") > 0) {
String suffix = internalPath.substring(internalPath.lastIndexOf(".") + 1, internalPath.length());
if (mCompressedFileTypes.contains(suffix.toLowerCase())) {
result = false;
}
}
return result;
}
/**
* Close the OdfPackage after it is no longer needed. Even after saving it
* is still necessary to close the package to have again full access about
* the file. Closing the OdfPackage will release all temporary created data.
* Do this as the last action to free resources. Closing an already closed
* document has no effect.
*/
public void close() {
if (mZipFile != null) {
try {
mZipFile.close();
} catch (IOException ex) {
// log exception and continue
Logger.getLogger(OdfPackage.class.getName()).log(Level.INFO,
null, ex);
}
}
// release all stuff - this class is impossible to use afterwards
mZipFile = null;
mMediaType = null;
mZipEntries = null;
mPkgDoms = null;
mMemoryFileCache = null;
mManifestEntries = null;
mBaseURI = null;
mResolver = null;
}
/**
* Parse the Manifest file
*/
private void parseManifest() {
InputStream is = null;
try {
ZipEntry entry = null;
// loading the MANIFEST once from the ZIP, as it will never be cached, just once read
// during load (now) and on save serialized from file status (ie. mManifestEntries)
if ((entry = mZipEntries.get(OdfPackage.OdfFile.MANIFEST.internalPath)) != null) {
is = mZipFile.getInputStream(entry);
}
if (is == null) {
logValidationError(OdfPackageConstraint.MANIFEST_NOT_IN_PACKAGE, getBaseURI());
return;
}
XMLReader xmlReader = getXMLReader();
xmlReader.setEntityResolver(getEntityResolver());
xmlReader.setContentHandler(new OdfManifestSaxHandler(this));
InputSource ins = new InputSource(is);
String uri = mBaseURI + SLASH + OdfPackage.OdfFile.MANIFEST.internalPath;
ins.setSystemId(uri);
xmlReader.parse(ins);
// ToDo: manifest.xml will be held in the future as DOM, now its being generated for each save()
mMemoryFileCache.remove(OdfPackage.OdfFile.MANIFEST.internalPath);
} catch (Exception ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
} finally {
try {
if (is != null) {
is.close();
}
} catch (IOException ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
XMLReader getXMLReader() throws ParserConfigurationException,
SAXException {
// create sax parser
SAXParserFactory saxFactory = new org.apache.xerces.jaxp.SAXParserFactoryImpl();
saxFactory.setNamespaceAware(true);
saxFactory.setValidating(false);
try {
saxFactory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
} catch (Exception ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
SAXParser parser = saxFactory.newSAXParser();
XMLReader xmlReader = parser.getXMLReader();
// More details at http://xerces.apache.org/xerces2-j/features.html#namespaces
xmlReader.setFeature("http://xml.org/sax/features/namespaces", true);
// More details at http://xerces.apache.org/xerces2-j/features.html#namespace-prefixes
xmlReader.setFeature("http://xml.org/sax/features/namespace-prefixes", true);
// More details at http://xerces.apache.org/xerces2-j/features.html#xmlns-uris
xmlReader.setFeature("http://xml.org/sax/features/xmlns-uris", true);
return xmlReader;
}
// Add the given path and all its subdirectories to the internalPath list
// to be written later to the manifest
private void createSubEntries(String internalPath) {
StringTokenizer tok = new StringTokenizer(internalPath, SLASH);
if (tok.countTokens() > 1) {
String path = EMPTY_STRING;
while (tok.hasMoreTokens()) {
String directory = tok.nextToken();
// it is a directory, if there are more token
if (tok.hasMoreTokens()) {
path = path + directory + SLASH;
OdfFileEntry fileEntry = mManifestEntries.get(path);
if (fileEntry == null) {
mManifestEntries.put(path, new OdfFileEntry(path, null));
}
}
}
}
}
/**
* Insert DOM tree into OdfPackage. An existing file will be replaced.
*
* @param fileDOM
* - XML DOM tree to be inserted as file.
* @param internalPath
* - relative documentURL where the DOM tree should be inserted as XML file
* @param mediaType
* - media type of stream. Set to null if unknown
* @throws java.lang.Exception
* when the DOM tree could not be inserted
*/
public void insert(Document fileDOM, String internalPath, String mediaType) {
internalPath = normalizeFilePath(internalPath);
if (mediaType == null) {
mediaType = XML_MEDIA_TYPE;
}
if (fileDOM == null) {
mPkgDoms.remove(internalPath);
} else {
mPkgDoms.put(internalPath, fileDOM);
}
updateFileEntry(ensureFileEntryExistence(internalPath), mediaType);
// remove byte array version of new DOM
mMemoryFileCache.remove(internalPath);
}
/**
* Embed an OdfPackageDocument to the current OdfPackage.
* All the file entries of child document will be inserted.
* @param sourceDocument the OdfPackageDocument to be embedded.
* @param internalPath path to the directory the ODF document should be inserted (relative to ODF package root).
*/
public void insertDocument(OdfPackageDocument sourceDocument, String internalPath) {
internalPath = normalizeDirectoryPath(internalPath);
// opened DOM of descendant Documents will be flashed to the their pkg
flushDoms(sourceDocument);
// Gets the OdfDocument's manifest entry info, no matter it is a independent document or an embeddedDocument.
Map entryMapToCopy;
if (sourceDocument.isRootDocument()) {
entryMapToCopy = sourceDocument.getPackage().getManifestEntries();
} else {
entryMapToCopy = sourceDocument.getPackage().getSubDirectoryEntries(sourceDocument.getDocumentPath());
}
//insert to package and add it to the Manifest
internalPath = sourceDocument.setDocumentPath(internalPath);
String documentDirectory = null;
if(internalPath.equals(SLASH)){
documentDirectory = EMPTY_STRING;
}else{
documentDirectory = internalPath;
}
Set entryNameList = entryMapToCopy.keySet();
for (String entryName : entryNameList) {
OdfFileEntry entry = entryMapToCopy.get(entryName);
if (entry != null) {
try {
// if entry is a directory (e.g. an ODF document root)
if (entryName.endsWith(SLASH)) {
// insert directory
if (entryName.equals(SLASH)) {
insert((byte[]) null, documentDirectory, sourceDocument.getMediaTypeString());
} else {
insert((byte[]) null, documentDirectory + entry.getPath(), entry.getMediaTypeString());
}
} else {
String packagePath = documentDirectory + entry.getPath();
insert(sourceDocument.getPackage().getInputStream(entryName), packagePath, entry.getMediaTypeString());
}
} catch (Exception ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
//make sure the media type of embedded Document is right set.
OdfFileEntry embedDocumentRootEntry = new OdfFileEntry(internalPath, sourceDocument.getMediaTypeString());
mManifestEntries.put(internalPath, embedDocumentRootEntry);
// the new document will be attached to its new package (it has been inserted to)
sourceDocument.setPackage(this);
cacheDocument(sourceDocument, internalPath);
}
/**
* Insert all open DOMs of XML files beyond parent document to the package.
* The XML files will be updated in the package after calling save.
*
* @param parentDocument the document, which XML files shall be serialized
*/
void flushDoms(OdfPackageDocument parentDocument) {
OdfPackage pkg = parentDocument.getPackage();
if (parentDocument.isRootDocument()) {
// for every parsed XML file (DOM)
for (String xmlFilePath : pkg.getCachedDoms().keySet()) {
// insert it to the package (serializing and caching it till final save)
pkg.insert(pkg.getCachedDom(xmlFilePath), xmlFilePath, "text/xml");
}
} else {
// if not root document, check ..
String parentDocumentPath = parentDocument.getDocumentPath();
// for every parsed XML file (DOM)
for (String xmlFilePath : pkg.getCachedDoms().keySet()) {
// if the file is within the given document
if (xmlFilePath.startsWith(parentDocumentPath)) {
// insert it to the package (serializing and caching it till final save)
pkg.insert(pkg.getCachedDom(xmlFilePath), xmlFilePath, "text/xml");
}
}
}
}
/** Get all the file entries from a sub directory */
private Map getSubDirectoryEntries(String directory) {
directory = normalizeDirectoryPath(directory);
Map subEntries = new HashMap();
Map allEntries = getManifestEntries();
Set rootEntryNameSet = getFilePaths();
for (String entryName : rootEntryNameSet) {
if (entryName.startsWith(directory)) {
String newEntryName = entryName.substring(directory.length());
if (newEntryName.length() == 0) {
continue;
}
OdfFileEntry srcFileEntry = allEntries.get(entryName);
OdfFileEntry newFileEntry = new OdfFileEntry();
newFileEntry.setEncryptionData(srcFileEntry.getEncryptionData());
newFileEntry.setMediaTypeString(srcFileEntry.getMediaTypeString());
newFileEntry.setPath(newEntryName);
newFileEntry.setSize(srcFileEntry.getSize());
subEntries.put(entryName, newFileEntry);
}
}
return subEntries;
}
/**
* Method returns the paths of all document within the package.
*
* @return A set of paths of all documents of the package, including the root document.
*/
public Set getDocumentPaths() {
return getDocumentPaths(null, null);
}
/**
* Method returns the paths of all document within the package matching the given criteria.
*
* @param mediaTypeString limits the desired set of document paths to documents of the given mediaType
* @return A set of paths of all documents of the package, including the root document, that match the given parameter.
*/
public Set getDocumentPaths(String mediaTypeString) {
return getDocumentPaths(mediaTypeString, null);
}
/**
* Method returns the paths of all document within the package matching the given criteria.
*
* @param mediaTypeString limits the desired set of document paths to documents of the given mediaType
* @param subDirectory limits the desired set document paths to those documents below of this subdirectory
* @return A set of paths of all documents of the package, including the root document, that match the given parameter.
*/
Set getDocumentPaths(String mediaTypeString, String subDirectory) {
Set innerDocuments = new HashSet();
Set packageFilePaths = getFilePaths();
// check manifest for current embedded OdfPackageDocuments
for (String filePath : packageFilePaths) {
// check if a subdirectory was the criteria and if the files are beyond the given subdirectory
if (subDirectory == null || filePath.startsWith(subDirectory) && !filePath.equals(subDirectory)) {
// with documentURL is not empty and is a directory (ie. a potential document)
if (filePath.length() > 1 && filePath.endsWith(SLASH)) {
String fileMediaType = getFileEntry(filePath).getMediaTypeString();
if (fileMediaType != null && !fileMediaType.equals(EMPTY_STRING)) {
// check if a certain mediaType was the critera and was matched
if (mediaTypeString == null || mediaTypeString.equals(fileMediaType)) {
// only relative path is allowed as path
innerDocuments.add(filePath);
}
}
}
}
}
return innerDocuments;
}
/**
* Adding a manifest:file-entry to be saved in manifest.xml.
* In addition, sub directories will be added as well to the manifest.
*/
private OdfFileEntry ensureFileEntryExistence(String internalPath) {
// if it is NOT the resource "/META-INF/manifest.xml"
OdfFileEntry fileEntry = null;
if (!OdfPackage.OdfFile.MANIFEST.internalPath.equals(internalPath) ||
!internalPath.equals(EMPTY_STRING)) {
if (mManifestEntries == null) {
mManifestEntries = new HashMap();
}
fileEntry = mManifestEntries.get(internalPath);
// for every new file entry
if (fileEntry == null) {
fileEntry = new OdfFileEntry(internalPath);
mManifestEntries.put(internalPath, fileEntry);
// creates recursive file entries for all sub directories
createSubEntries(internalPath);
}
}
return fileEntry;
}
/**
* update file entry setting.
*/
private void updateFileEntry(OdfFileEntry fileEntry, String mediaType) {
// overwrite previous settings
fileEntry.setMediaTypeString(mediaType);
// reset encryption data (ODFDOM does not support encryption yet)
fileEntry.setEncryptionData(null);
// reset size to be unset
fileEntry.setSize(-1);
}
/**
* Gets org.w3c.dom.Document for XML file contained in package.
*
* @param internalPath to a file within the Odf Package (eg. content.xml)
* @return an org.w3c.dom.Document
* @throws SAXException
* @throws ParserConfigurationException
* @throws IOException
* @throws IllegalArgumentException
* @throws TransformerConfigurationException
* @throws TransformerException
*/
public Document getDom(String internalPath) throws SAXException,
ParserConfigurationException, IllegalArgumentException,
TransformerConfigurationException, TransformerException, IOException {
Document doc = mPkgDoms.get(internalPath);
if (doc != null) {
return doc;
}
InputStream is = getInputStream(internalPath);
// We depend on Xerces. So we just go ahead and create a Xerces DBF,
// without
// forcing everything else to do so.
DocumentBuilderFactory factory = new org.apache.xerces.jaxp.DocumentBuilderFactoryImpl();
factory.setNamespaceAware(true);
factory.setValidating(false);
DocumentBuilder builder = factory.newDocumentBuilder();
builder.setEntityResolver(getEntityResolver());
String uri = getBaseURI() + internalPath;
if (mErrorHandler != null) {
builder.setErrorHandler(mErrorHandler);
}
InputSource ins = new InputSource(is);
ins.setSystemId(uri);
doc = builder.parse(ins);
if (doc != null) {
mPkgDoms.put(internalPath, doc);
mMemoryFileCache.remove(internalPath);
}
return doc;
}
/**
* Inserts an external file into an OdfPackage. An existing file will be
* replaced.
*
* @param sourceURI
* - the source URI to the file to be inserted into the package.
* @param internalPath
* - relative documentURL where the tree should be inserted as XML
* file
* @param mediaType
* - media type of stream. Set to null if unknown
* @throws java.lang.Exception
* In case the file could not be saved
*/
public void insert(URI sourceURI, String internalPath, String mediaType)
throws Exception {
InputStream is = null;
if (sourceURI.isAbsolute()) {
// if the URI is absolute it can be converted to URL
is = sourceURI.toURL().openStream();
} else {
// otherwise create a file class to open the stream
is = new FileInputStream(sourceURI.toString());
}
insert(is, internalPath, mediaType);
}
/**
* Inserts InputStream into an OdfPackage. An existing file will be
* replaced.
*
* @param fileStream
* - the stream of the file to be inserted into the ODF package.
* @param internalPath
* - relative documentURL where the tree should be inserted as XML
* file
* @param mediaType
* - media type of stream. Set to null if unknown
*/
public void insert(InputStream fileStream, String internalPath, String mediaType) throws Exception {
internalPath = normalizeFilePath(internalPath);
if (fileStream == null) {
//adding a simple directory without MIMETYPE
insert((byte[]) null, internalPath, mediaType);
} else {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
BufferedInputStream bis = null;
if (fileStream instanceof BufferedInputStream) {
bis = (BufferedInputStream) fileStream;
} else {
bis = new BufferedInputStream(fileStream);
}
StreamHelper.transformStream(bis, baos);
byte[] data = baos.toByteArray();
insert(data, internalPath, mediaType);
}
}
/**
* Inserts a byte array into OdfPackage. An existing file will be replaced.
* If the byte array is NULL a directory with the given mimetype will be created.
*
* @param fileBytes
* - data of the file stream to be stored in package.
* If NULL a directory with the given mimetype will be created.
* @param internalPath
* - path of the file or directory relative to the package root.
* @param mediaTypeString
* - media type of stream. If unknown null can be used.
*/
public void insert(byte[] fileBytes, String internalPath, String mediaTypeString) {
internalPath = normalizeFilePath(internalPath);
if (OdfPackage.OdfFile.MEDIA_TYPE.getPath().equals(internalPath)) {
try {
setMediaTypeString(new String(fileBytes, "UTF-8"));
} catch (UnsupportedEncodingException useEx) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE,
"ODF file could not be created as string!", useEx);
}
return;
}
if (fileBytes != null) {
mMemoryFileCache.put(internalPath, fileBytes);
// as DOM would overwrite data cache, any existing DOM cache will be deleted
if (mPkgDoms.containsKey(internalPath)) {
mPkgDoms.remove(internalPath);
}
}
updateFileEntry(ensureFileEntryExistence(internalPath), mediaTypeString);
}
// changed to package access as the manifest interiors are an implementation detail
Map getManifestEntries() {
return mManifestEntries;
}
/**
* Get Manifest as String NOTE: This functionality should better be moved to
* a DOM based Manifest class
*
* @return the /META-INF/manifest.xml as a String
*/
public String getManifestAsString() {
if (mManifestEntries == null) {
return null;
} else {
StringBuilder buf = new StringBuilder();
buf.append("\n");
buf.append("\n");
Iterator it = new TreeSet(mManifestEntries.keySet()).iterator();
while (it.hasNext()) {
String key = it.next();
String s = null;
OdfFileEntry fileEntry = mManifestEntries.get(key);
if (fileEntry != null) {
s = fileEntry.getPath();
// only directories with a mimetype (documents) will be written into the manifest.xml
if (s != null && !s.endsWith(SLASH) || !fileEntry.getMediaTypeString().equals(EMPTY_STRING)) {
buf.append(" 0) {
buf.append(" manifest:size=\"");
buf.append(i);
buf.append("\"");
}
EncryptionData enc = fileEntry.getEncryptionData();
if (enc != null) {
buf.append(">\n");
buf.append(" \n");
Algorithm alg = enc.getAlgorithm();
if (alg != null) {
buf.append(" \n");
buf.append(" \n");
} else {
buf.append("/>\n");
}
}
}
}
buf.append(" ");
return buf.toString();
}
}
/**
* Get package (sub-) content as byte array
*
* @param internalPath relative documentURL to the package content
* @return the unzipped package content as byte array
* @throws java.lang.Exception
*/
public byte[] getBytes(String internalPath) {
// if path is null or empty return null
if (internalPath == null || internalPath.equals(EMPTY_STRING)) {
return null;
}
internalPath = normalizeFilePath(internalPath);
byte[] data = null;
// if the file is "mimetype"
if (internalPath.equals(OdfPackage.OdfFile.MEDIA_TYPE.getPath())) {
if (mMediaType == null) {
return null;
} else {
try {
data = mMediaType.getBytes("UTF-8");
} catch (UnsupportedEncodingException use) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, use);
return null;
}
}
// if the file is "/META-INF/manifest.xml"
} else if (internalPath.equals(OdfPackage.OdfFile.MANIFEST.internalPath)) {
if (mManifestEntries == null) {
// manifest was not present
return null;
}
String s = getManifestAsString();
if (s == null) {
return null;
} else {
try {
data = s.getBytes("UTF-8");
} catch (UnsupportedEncodingException ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
}
// if the path is already loaded as DOM (highest priority)
} else if (mPkgDoms.get(internalPath) != null) {
data = flushDom(mPkgDoms.get(internalPath));
mMemoryFileCache.put(internalPath, data);
// if the path's file was cached to memory (second high priority)
} else if (mManifestEntries.containsKey(internalPath)
&& mMemoryFileCache.get(internalPath) != null) {
data = mMemoryFileCache.get(internalPath);
// if the path's file was cached to disc (lowest priority)
}
// if not available, check if file exists in ZIP
if (data == null) {
ZipEntry entry = null;
if ((entry = mZipEntries.get(internalPath)) != null) {
InputStream inputStream = null;
try {
inputStream = mZipFile.getInputStream(entry);
if (inputStream != null) {
ByteArrayOutputStream out = new ByteArrayOutputStream();
StreamHelper.transformStream(inputStream, out);
data = out.toByteArray();
// store for further usage; do not care about manifest: that
// is handled exclusively
mMemoryFileCache.put(internalPath, data);
}
} catch (IOException ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
} finally {
try {
if (inputStream != null) {
inputStream.close();
}
} catch (IOException ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
}
return data;
}
// Serializes a DOM tree into a byte array.
// Providing the counterpart of the generic Namespace handling of OdfFileDom.
private byte[] flushDom(Document dom) {
// if it is one of our DOM files we may flush all collected namespaces to the root element
if (dom instanceof OdfFileDom) {
OdfFileDom odfDom = (OdfFileDom) dom;
Map nsByUri = odfDom.getMapNamespacePrefixByUri();
OdfElement root = odfDom.getRootElement();
if (root != null) {
for (Entry entry : nsByUri.entrySet()) {
root.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:" + entry.getValue(), entry.getKey());
}
}
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DOMXSImplementationSourceImpl dis = new org.apache.xerces.dom.DOMXSImplementationSourceImpl();
DOMImplementationLS impl = (DOMImplementationLS) dis.getDOMImplementation("LS");
LSSerializer writer = impl.createLSSerializer();
LSOutput output = impl.createLSOutput();
output.setByteStream(baos);
writer.write(dom, output);
return baos.toByteArray();
}
/**
* Get the latest version of package content as InputStream, as it would be saved.
* This might not be the original version once loaded from the package.
*
* @param internalPath
* of the desired stream.
* @return Inputstream of the ODF file within the package for the given
* path.
*/
public InputStream getInputStream(String internalPath) {
internalPath = normalizeFilePath(internalPath);
// else we always cache here and return a ByteArrayInputStream because
// if
// we would return ZipFile getInputStream(entry) we would not be
// able to read 2 Entries at the same time. This is a limitation of the
// ZipFile class.
// As it would be quite a common thing to read the content.xml and the
// styles.xml
// simultanously when using XSLT on OdfPackages we want to circumvent
// this limitation
byte[] data = getBytes(internalPath);
if (data != null && data.length != 0) {
ByteArrayInputStream bais = new ByteArrayInputStream(data);
return bais;
}
return null;
}
/**
* Get the latest version of package content as InputStream, as it would be saved.
* This might not be the original version once loaded from the package.
*
* @param internalPath
* of the desired stream.
* @param useOriginal true uses the stream as loaded from the ZIP.
* False will return even modified file content as a stream.
* @return Inputstream of the ODF file within the package for the given
* path.
*/
public InputStream getInputStream(String internalPath, boolean useOriginal) {
InputStream stream = null;
if (useOriginal) {
ZipEntry entry = mOriginalZipEntries.get(internalPath);
if (entry != null) {
try {
stream = mZipFile.getInputStream(entry);
} catch (IOException ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
}
} else {
stream = getInputStream(internalPath);
}
return stream;
}
/**
* Gets the InputStream containing whole OdfPackage.
*
* @return the ODF package as input stream
* @throws java.lang.Exception
* - if the package could not be read
*/
public InputStream getInputStream() throws Exception {
final PipedOutputStream os = new PipedOutputStream();
final PipedInputStream is = new PipedInputStream();
is.connect(os);
Thread thread1 = new Thread() {
@Override
public void run() {
try {
save(os, mBaseURI);
} catch (Exception e) {
}
}
};
Thread thread2 = new Thread() {
@Override
public void run() {
try {
BufferedInputStream bis = new BufferedInputStream(is, StreamHelper.PAGE_SIZE);
BufferedOutputStream bos = new BufferedOutputStream(os, StreamHelper.PAGE_SIZE);
StreamHelper.transformStream(bis, bos);
is.close();
os.close();
} catch (Exception ie) {
}
}
};
thread1.start();
thread2.start();
return is;
}
/**
* Insert the OutputStream for into OdfPackage. An existing file will be
* replaced.
*
* @param internalPath
* - relative documentURL where the DOM tree should be inserted as
* XML file
* @return outputstream for the data of the file to be stored in package
* @throws java.lang.Exception
* when the DOM tree could not be inserted
*/
public OutputStream insertOutputStream(String internalPath) throws Exception {
return insertOutputStream(internalPath, null);
}
/**
* Insert the OutputStream - to be filled after method - when stream is
* closed into OdfPackage. An existing file will be replaced.
*
* @param internalPath
* - relative documentURL where the DOM tree should be inserted as
* XML file
* @param mediaType
* - media type of stream
* @return outputstream for the data of the file to be stored in package
* @throws java.lang.Exception
* when the DOM tree could not be inserted
*/
public OutputStream insertOutputStream(String internalPath, String mediaType)
throws Exception {
internalPath = normalizeFilePath(internalPath);
final String fPath = internalPath;
final OdfFileEntry fFileEntry = getFileEntry(internalPath);
final String fMediaType = mediaType;
ByteArrayOutputStream baos = new ByteArrayOutputStream() {
@Override
public void close() {
try {
byte[] data = this.toByteArray();
if (fMediaType == null || fMediaType.length() == 0) {
insert(data, fPath, fFileEntry == null ? null
: fFileEntry.getMediaTypeString());
} else {
insert(data, fPath, fMediaType);
}
super.close();
} catch (Exception ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
}
};
return baos;
}
/** Removes a singel file from the package.
* @param internalPath of the file relative to the package root
*/
public void remove(String internalPath) {
internalPath = normalizePath(internalPath);
if (mZipEntries != null && mZipEntries.containsKey(internalPath)) {
mZipEntries.remove(internalPath);
}
if (mManifestEntries != null && mManifestEntries.containsKey(internalPath)) {
mManifestEntries.remove(internalPath);
}
}
/**
* Encoded XML Attributes
*/
private String encodeXMLAttributes(String attributeValue) {
String encodedValue = QUOTATION_PATTERN.matcher(attributeValue).replaceAll(ENCODED_QUOTATION);
encodedValue = APOSTROPHE_PATTERN.matcher(encodedValue).replaceAll(ENCODED_APOSTROPHE);
return encodedValue;
}
/**
* Get EntityResolver to be used in XML Parsers which can resolve content
* inside the OdfPackage
*
* @return a SAX EntityResolver
*/
public EntityResolver getEntityResolver() {
if (mResolver == null) {
mResolver = new Resolver(this);
}
return mResolver;
}
/**
* Get URIResolver to be used in XSL Transformations which can resolve
* content inside the OdfPackage
*
* @return a TraX Resolver
*/
public URIResolver getURIResolver() {
if (mResolver == null) {
mResolver = new Resolver(this);
}
return mResolver;
}
private static String getBaseURLFromFile(File file) throws Exception {
String baseURL = file.getCanonicalFile().toURI().toString();
baseURL = BACK_SLASH_PATTERN.matcher(baseURL).replaceAll(SLASH);
return baseURL;
}
/**
* Ensures that the given file path is not null nor empty and not an external reference
*
* - All backslashes "\" are exchanged by slashes "/"
* - Any substring "/../", "/./" or "//" will be removed
* - A prefix "./" and "../" will be removed
*
*
* @throws IllegalArgumentException If the path is NULL, empty or an external path (e.g. starting with "../" is given).
* None relative URLs will NOT throw an exception.
* @return the normalized path or the URL
*/
static String normalizeFilePath(String internalPath) {
if (internalPath.equals(EMPTY_STRING)) {
String errMsg = "The internalPath given by parameter is an empty string!";
Logger.getLogger(OdfPackage.class.getName()).severe(errMsg);
throw new IllegalArgumentException(errMsg);
} else {
return normalizePath(internalPath);
}
}
/**
* Ensures the given directory path is not null nor an external reference to resources outside the package.
* An empty path and slash "/" are both mapped to the root directory/document.
*
* NOTE: Although ODF only refer the "/" as root,
* the empty path aligns more adequate with the file system concept.
*
* To ensure the given directory path within the package can be used as a key (is unique for the Package) the path will be normalized.
* @see #normalizeFilePath(String)
* In addition to the file path normalization a trailing slash will be used for directories.
*/
static String normalizeDirectoryPath(String directoryPath) {
directoryPath = normalizePath(directoryPath);
// if not the root document - which is from ODF view a '/' and no
// trailing '/'
if (!directoryPath.equals(OdfPackageDocument.ROOT_DOCUMENT_PATH)
&& !directoryPath.endsWith(SLASH)) {
// add a trailing slash
directoryPath = directoryPath + SLASH;
}
return directoryPath;
}
/** Normalizes both directory and file path */
static String normalizePath(String path) {
if (path == null) {
String errMsg = "The internalPath given by parameter is NULL!";
Logger.getLogger(OdfPackage.class.getName()).severe(errMsg);
throw new IllegalArgumentException(errMsg);
} else if (!mightBeExternalReference(path)) {
if (path.equals(EMPTY_STRING)) {
path = SLASH;
} else {
// exchange all backslash "\" with a slash "/"
if (path.indexOf('\\') != -1) {
path = BACK_SLASH_PATTERN.matcher(path).replaceAll(SLASH);
}
// exchange all double slash "//" with a slash "/"
while (path.indexOf("//") != -1) {
path = DOUBLE_SLASH_PATTERN.matcher(path).replaceAll(SLASH);
}
// if directory replacements (e.g. ..) exist, resolve and remove them
if (path.indexOf("/.") != -1 || path.indexOf("./") != -1) {
path = removeChangeDirectories(path);
}
}
}
return path;
}
/** Normalizes both directory and file path */
private static boolean mightBeExternalReference(String internalPath) {
boolean isExternalReference = false;
// if the fileReference is a external relative documentURL..
if (internalPath.startsWith(DOUBLE_DOT)
|| // or absolute documentURL AND not root document
internalPath.startsWith(SLASH) && !internalPath.equals(SLASH)
|| // or absolute IRI
internalPath.contains(COLON)) {
isExternalReference = true;
}
return isExternalReference;
}
/** Resolving the directory replacements (ie. "/../" and "/./") with a slash "/" */
private static String removeChangeDirectories(String path) {
boolean isDirectory = path.endsWith(SLASH);
StringTokenizer tokenizer = new StringTokenizer(path, SLASH);
int tokenCount = tokenizer.countTokens();
List tokenList = new ArrayList(tokenCount);
// add all paths to a list
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
tokenList.add(token);
}
if (!isDirectory) {
String lastPath = tokenList.get(tokenCount - 1);
if (lastPath.equals(DOT) || lastPath.equals(DOUBLE_DOT)) {
isDirectory = true;
}
}
String currentToken;
int removeDirLevel = 0;
StringBuilder out = new StringBuilder();
// work on the list from back to front
for (int i = tokenCount - 1; i >= 0; i--) {
currentToken = tokenList.get(i);
// every ".." will remove an upcoming path
if (currentToken.equals(DOUBLE_DOT)) {
removeDirLevel++;
} else if (currentToken.equals(DOT)) {
} else {
// if a path have to be remove, neglect current path
if (removeDirLevel > 0) {
removeDirLevel--;
} else {
// add the path segment
out.insert(0, SLASH);
out.insert(0, currentToken);
}
}
}
if (removeDirLevel > 0) {
return EMPTY_STRING;
} else {
if (!isDirectory) {
// remove trailing slash /
out.deleteCharAt(out.length() - 1);
}
return out.toString();
}
}
/**
* Checks if the given reference is a reference, which points outside the
* ODF package
*
* @param internalPath
* the file reference to be checked
* @return true if the reference is an package external reference
*/
public static boolean isExternalReference(String internalPath) {
if (mightBeExternalReference(internalPath)) {
return true;
} else {
return mightBeExternalReference(normalizePath(internalPath));
}
}
/**
* Allow an application to register an error event handler.
*
* If the application does not register an error handler, all
* error events reported by the ODFDOM (e.g. the SAX Parser) will be silently
* ignored; however, normal processing may not continue. It is
* highly recommended that all ODF applications implement an
* error handler to avoid unexpected bugs.
*
* Applications may register a new or different handler in the
* middle of a parse, and the ODFDOM will begin using the new
* handler immediately.
*
* @param handler The error handler.
* @see #getErrorHandler
*/
public void setErrorHandler(ErrorHandler handler) {
mErrorHandler = handler;
}
/**
* Return the current error handler used for ODF validation.
*
* @return The current error handler, or null if none
* has been registered and validation is disabled.
* @see #setErrorHandler
*/
public ErrorHandler getErrorHandler() {
return mErrorHandler;
}
void logValidationWarning(ValidationConstraint constraint, String baseURI, Object... o) {
try {
int varCount = 0;
if (o != null) {
varCount = o.length;
}
switch (varCount) {
case 0:
mErrorHandler.warning(new OdfValidationException(constraint, baseURI, o));
break;
case 1:
mErrorHandler.warning(new OdfValidationException(constraint, baseURI, o[0]));
break;
case 2:
mErrorHandler.warning(new OdfValidationException(constraint, baseURI, o[0], o[1]));
break;
}
} catch (SAXException ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.WARNING, null, ex);
}
}
void logValidationError(ValidationConstraint constraint, String baseURI, Object... o) {
try {
int varCount = 0;
if (o != null) {
varCount = o.length;
}
switch (varCount) {
case 0:
mErrorHandler.error(new OdfValidationException(constraint, baseURI, o));
break;
case 1:
mErrorHandler.error(new OdfValidationException(constraint, baseURI, o[0]));
break;
case 2:
mErrorHandler.error(new OdfValidationException(constraint, baseURI, o[0], o[1]));
break;
}
} catch (SAXException ex) {
Logger.getLogger(OdfPackage.class.getName()).log(Level.SEVERE, null, ex);
}
}
/** @param odfVersion parsed from the manifest */
void setManifestVersion(String odfVersion){
mManifestVersion = odfVersion;
}
/** @return the ODF version found in the manifest.
* Meant to be used to reuse when the manifest is recreated */
String getManifestVersion(){
return mManifestVersion;
}
}
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