/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* 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
*
* 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.apache.cocoon.components.language.markup.xsp;
import org.apache.avalon.framework.CascadingRuntimeException;
import org.apache.avalon.framework.component.Component;
import org.apache.avalon.framework.component.ComponentManager;
import org.apache.cocoon.components.source.SourceUtil;
import org.apache.cocoon.environment.Context;
import org.apache.cocoon.environment.ObjectModelHelper;
import org.apache.cocoon.environment.Session;
import org.apache.cocoon.environment.SourceResolver;
import org.apache.cocoon.util.NetUtils;
import org.apache.cocoon.xml.IncludeXMLConsumer;
import org.apache.commons.lang.StringEscapeUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.excalibur.source.Source;
import org.apache.excalibur.xml.sax.SAXParser;
import org.xml.sax.ContentHandler;
import org.xml.sax.InputSource;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.io.FileNotFoundException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Map;
/**
* The XSP <code>Utility</code> object helper
* @author <a href="mailto:ricardo@apache.org">Ricardo Rocha</a>
* @author <a href="mailto:bloritsch@apache.org">Berin Loritsch</a>
* @version CVS $Id: XSPUtil.java,v 1.2 2004/03/28 14:28:04 antonio Exp $
*/
public class XSPUtil {
public static String pathComponent(String filename) {
int i = filename.lastIndexOf(File.separator);
return (i >= 0) ? filename.substring(0, i) : filename;
}
public static String fileComponent(String filename) {
int i = filename.lastIndexOf(File.separator);
return (i >= 0) ? filename.substring(i + 1) : filename;
}
public static String baseName(String filename) {
return baseName(filename, ".");
}
public static String baseName(String filename, String suffix) {
int lastDot = filename.lastIndexOf(suffix);
if (lastDot >= 0) {
filename = filename.substring(0, lastDot);
}
return filename;
}
public static String normalizedBaseName(String filename) {
filename = baseName(filename);
return normalizedName(filename);
}
public static String normalizedName(String filename) {
String[] path = split(filename, File.separator);
int start = (path[0].length() == 0) ? 1 : 0;
StringBuffer buffer = new StringBuffer();
for (int i = start; i < path.length; i++) {
if (i > start) {
buffer.append(File.separator);
}
buffer.append('_');
char[] chars = path[i].toCharArray();
for (int j = 0; j < chars.length; j++) {
if (isAlphaNumeric(chars[j])) {
buffer.append(chars[j]);
} else {
buffer.append('_');
}
}
}
return buffer.toString();
}
public static String relativeFilename(String filename, Map objectModel) throws IOException {
File file = new File(filename);
if (file.isAbsolute() && file.exists()) {
return filename;
}
Context context = ObjectModelHelper.getContext(objectModel);
URL resource = context.getResource(filename);
if (resource == null) {
throw new FileNotFoundException("The file " + filename + " does not exist!");
}
return NetUtils.getPath(resource.toExternalForm());
}
public static boolean isAlphaNumeric(char c) {
return c == '_' || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9');
}
public static String[] split(String line) {
return StringUtils.split(line, " \t\r\f\n");
}
public static String[] split(String line, String delimiter) {
return StringUtils.split(line, delimiter);
}
public static String encodeMarkup(String string) {
return StringEscapeUtils.escapeXml(string);
}
public static String formEncode(String text) throws Exception {
return URLEncoder.encode(text);
}
// Shameless, ain't it?
public static String formDecode(String s) throws Exception {
return URLDecoder.decode(s);
}
/* Logicsheet Utility Methods */
// Date
public static String formatDate(Date date, String pattern) {
if (StringUtils.isEmpty(pattern)) {
pattern = "yyyy/MM/dd hh:mm:ss aa";
}
try {
return (new SimpleDateFormat(pattern)).format(date);
} catch (Exception e) {
return date.toString();
}
}
// Counters
private static volatile int count = 0;
public static int getCount() {
return ++count;
}
public static int getSessionCount(Session session) {
synchronized (session) {
Integer integer = (Integer)session.getAttribute("util.counter");
if (integer == null) {
integer = new Integer(0);
}
int cnt = integer.intValue() + 1;
session.setAttribute("util.counter", new Integer(cnt));
return cnt;
}
}
public static Object getContextAttribute(Map objectModel, String name) {
Context context = ObjectModelHelper.getContext(objectModel);
return context.getAttribute(name);
}
// Inclusion
public static String getSourceContents(String url, SourceResolver resolver) throws IOException {
Source source = resolver.resolveURI(url);
try {
return getContents(source.getInputStream());
} finally {
resolver.release(source);
}
}
public static String getSourceContents(String uri, String base, SourceResolver resolver) throws IOException {
if (StringUtils.isEmpty(base)) {
base = null;
}
Source source = resolver.resolveURI(uri, base, null);
try {
return getContents(source.getInputStream());
} finally {
resolver.release(source);
}
}
public static String getFileContents(String filename) throws IOException {
return getContents(new FileReader(filename));
}
public static String getFileContents(String filename, String encoding) throws IOException {
return getContents(new FileInputStream(filename), encoding);
}
public static String getContents(InputStream in, String encoding) throws IOException {
return getContents(new InputStreamReader(in, encoding));
}
public static String getContents(InputStream in) throws IOException {
return getContents(new InputStreamReader(in));
}
public static String getContents(Reader reader) throws IOException {
int len;
char[] chr = new char[4096];
StringBuffer buffer = new StringBuffer();
try {
while ((len = reader.read(chr)) > 0) {
buffer.append(chr, 0, len);
}
} finally {
reader.close();
}
return buffer.toString();
}
public static void includeSource(String uri, String base, SourceResolver resolver, ContentHandler contentHandler)
throws RuntimeException {
if (StringUtils.isEmpty(base)) {
base = null;
}
Source source = null;
try {
source = resolver.resolveURI(uri, base, null);
SourceUtil.toSAX(source, new IncludeXMLConsumer(contentHandler));
} catch (Exception e) {
throw new CascadingRuntimeException("Error including source " + base + " " + uri, e);
} finally {
if (source != null) {
resolver.release(source);
}
}
}
public static void includeString(String string, ComponentManager manager, ContentHandler contentHandler)
throws RuntimeException {
XSPUtil.includeInputSource(new InputSource(new StringReader(String.valueOf(string))), manager,
contentHandler);
}
public static void includeFile(String name, ComponentManager manager, ContentHandler contentHandler, Map objectModel)
throws RuntimeException {
try {
XSPUtil.includeInputSource(new InputSource(new FileReader(XSPUtil.relativeFilename(name, objectModel))),
manager, contentHandler);
} catch (IOException e) {
throw new CascadingRuntimeException("Could not include file " + name, e);
}
}
public static void includeInputSource(InputSource source, ComponentManager manager, ContentHandler contentHandler)
throws RuntimeException {
SAXParser parser = null;
try {
parser = (SAXParser)manager.lookup(SAXParser.ROLE);
IncludeXMLConsumer consumer = new IncludeXMLConsumer(contentHandler);
parser.parse(source, consumer, consumer);
} catch (Exception e) {
throw new CascadingRuntimeException("Could not include page", e);
} finally {
if (parser != null) {
manager.release((Component)parser);
}
}
}
}