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/*******************************************************************************
* Copyright (c) 2000, 2013 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.pde.internal.core.schema;
import java.io.File;
import java.net.*;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.runtime.*;
import org.eclipse.pde.core.plugin.IPluginModelBase;
import org.eclipse.pde.core.plugin.PluginRegistry;
import org.eclipse.pde.internal.core.ant.ConvertSchemaToHTML;
import org.eclipse.pde.internal.core.ischema.ISchema;
import org.eclipse.pde.internal.core.ischema.ISchemaDescriptor;
public class IncludedSchemaDescriptor implements ISchemaDescriptor {
private URL fSchemaURL;
private String fSchemaLocation;
private Schema fSchema;
private long fLastModified;
public IncludedSchemaDescriptor(URL schemaURL) {
fSchemaURL = schemaURL;
File file = new File(fSchemaURL.getFile());
if (file.exists())
fLastModified = file.lastModified();
}
public static URL computeURL(ISchemaDescriptor parentDesc, String schemaLocation, List<IPath> additionalSearchLocations) throws MalformedURLException {
URL parentURL = parentDesc == null ? null : parentDesc.getSchemaURL();
if (schemaLocation.startsWith("schema://")) { //$NON-NLS-1$
// extract plug-in ID
IPath path = new Path(schemaLocation.substring(9));
return getPluginRelativePath(path.segment(0), path.removeFirstSegments(1), parentURL, additionalSearchLocations);
}
if (parentURL == null)
return null;
// parent-relative location
IPath path = new Path(parentURL.getPath());
path = path.removeLastSegments(1).append(schemaLocation);
return new URL(parentURL.getProtocol(), parentURL.getHost(), path.toString());
}
/**
* Creates a URL describing the location of a included schema. First looks up
* the plug-in in the schema registry, then tries additional source locations,
* then looks for a co-located plug-in, then looks in the additional search
* path locations.
*
* @param pluginID ID of the plug-in owning the schema
* @param path the path to the schema inside the plug-in
* @param parentURL url of the parent schema file
* @param additionalSearchPath list of additional locations to search, only used with the {@link ConvertSchemaToHTML} ant task
* @return a url location of the included schema or <code>null</code>
*/
private static URL getPluginRelativePath(String pluginID, IPath path, URL parentURL, List<IPath> additionalSearchPath) {
// Start by looking in the schema registry
URL url = SchemaRegistry.getSchemaURL(pluginID, path.toString());
// Next search source locations
if (url == null) {
IPluginModelBase model = PluginRegistry.findModel(pluginID);
if (model != null)
url = SchemaRegistry.getSchemaFromSourceExtension(model.getPluginBase(), path);
}
File parentFile = null;
if (url == null && parentURL != null) {
try {
parentFile = URIUtil.toFile(URIUtil.toURI(parentURL));
} catch (URISyntaxException e) {
}
}
// If we are running the ant task, see if another project co-located with the parent contains the schema file
// The project folder must have the plug-in ID as its file name
if (url == null && parentFile != null) {
try {
// assuming schemas are located in: pluginId/schema/schemaFile.exsd (need to go up to parent of plug-in directory)
File pluginFile = new File(parentFile + "/../../../" + pluginID); //$NON-NLS-1$
if (pluginFile.isDirectory()) {
File schemaFile = new File(pluginFile, path.toOSString());
if (schemaFile.exists()) {
url = schemaFile.toURL();
}
// This is how we would extract the schema from a jar, but in practice this will never be the case
// because when a bundle is built, the schema files are moved to the source bundle, not the bundle we are checking
// } else if (CoreUtility.jarContainsResource(pluginFile, path.toPortableString(), false)) {
// url = new URL("jar:file:" + pluginFile.getAbsolutePath() + "!/" + path); //$NON-NLS-1$ //$NON-NLS-2$
}
} catch (MalformedURLException e) {
}
}
// If we are running the ant task, additional search locations may be provided
// The project folder must have the plug-in ID as its file name
if (url == null && additionalSearchPath != null) {
for (Iterator<IPath> iterator = additionalSearchPath.iterator(); iterator.hasNext();) {
IPath currentSearch = iterator.next();
File pluginFile = null;
if (currentSearch.isAbsolute()) {
// Append plug-in id directly to absolute paths
pluginFile = new File(currentSearch.toFile(), pluginID);
} else if (parentFile != null) {
// Append relative path to parent file location
File file = new File(parentFile, currentSearch.toOSString());
pluginFile = new File(file, pluginID);
}
if (pluginFile != null && pluginFile.isDirectory()) {
try {
File schemaFile = new File(pluginFile, path.toOSString());
if (schemaFile.exists()) {
url = schemaFile.toURL();
break;
}
} catch (MalformedURLException e) {
}
}
}
}
return url;
}
public boolean isEnabled() {
return true;
}
/* (non-Javadoc)
* @see org.eclipse.pde.internal.core.ischema.ISchemaDescriptor#getPointId()
*/
public String getPointId() {
int dotLoc = fSchemaLocation.lastIndexOf('.');
if (dotLoc != -1) {
return fSchemaLocation.substring(0, dotLoc);
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.pde.internal.core.ischema.ISchemaDescriptor#getSchemaURL()
*/
public URL getSchemaURL() {
return fSchemaURL;
}
/* (non-Javadoc)
* @see org.eclipse.pde.internal.core.ischema.ISchemaDescriptor#getSchema(boolean)
*/
public ISchema getSchema(boolean abbreviated) {
if (fSchema == null && fSchemaURL != null) {
fSchema = new Schema(this, fSchemaURL, abbreviated);
fSchema.load();
}
return fSchema;
}
/* (non-Javadoc)
* @see org.eclipse.pde.internal.core.ischema.ISchemaDescriptor#isStandalone()
*/
public boolean isStandalone() {
return false;
}
/* (non-Javadoc)
* @see org.eclipse.pde.internal.core.ischema.ISchemaDescriptor#getLastModified()
*/
public long getLastModified() {
return fLastModified;
}
}
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