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The private implementation classes of the Apache MyFaces Core JSF-2.3-next Implementation
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.myfaces.renderkit.html.util;
import java.io.UnsupportedEncodingException;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import javax.faces.context.ExternalContext;
import org.apache.myfaces.config.MyfacesConfig;
public final class JavascriptUtils
{
private JavascriptUtils()
{
// utility class, do not instantiate
}
private static final Set RESERVED_WORDS =
new HashSet(Arrays.asList(new String[]{
"abstract",
"boolean",
"break",
"byte",
"case",
"catch",
"char",
"class",
"const",
"continue",
"default",
"delete",
"do",
"double",
"else",
"export",
"extends",
"false",
"final",
"finally",
"float",
"for",
"function",
"goto",
"if",
"implements",
"in",
"instanceof",
"int",
"long",
"native",
"new",
"null",
"package",
"private",
"protected",
"public",
"return",
"short",
"static",
"super",
"switch",
"synchronized",
"this",
"throw",
"throws",
"transient",
"true",
"try",
"typeof",
"var",
"void",
"while",
"with"
}));
/**Don't use this function - except when compatibility with the RI is a must,
* as in the name for the clear form parameters script.
*/
public static String getValidJavascriptNameAsInRI(String origIdentifier)
{
return origIdentifier.replaceAll("-", "\\$_");
}
public static String getValidJavascriptName(String s, boolean checkForReservedWord)
{
if (checkForReservedWord && RESERVED_WORDS.contains(s))
{
return s + '_';
}
StringBuilder buf = null;
for (int i = 0, len = s.length(); i < len; i++)
{
char c = s.charAt(i);
if (Character.isLetterOrDigit(c))
{
// allowed char
if (buf != null)
{
buf.append(c);
}
}
else
{
if (buf == null)
{
buf = new StringBuilder(s.length() + 10);
buf.append(s.substring(0, i));
}
buf.append('_');
if (c < 16)
{
// pad single hex digit values with '0' on the left
buf.append('0');
}
if (c < 128)
{
// first 128 chars match their byte representation in UTF-8
buf.append(Integer.toHexString(c).toUpperCase());
}
else
{
byte[] bytes;
try
{
bytes = Character.toString(c).getBytes("UTF-8");
}
catch (UnsupportedEncodingException e)
{
throw new RuntimeException(e);
}
for (int j = 0; j < bytes.length; j++)
{
int intVal = bytes[j];
if (intVal < 0)
{
// intVal will be >= 128
intVal = 256 + intVal;
}
else if (intVal < 16)
{
// pad single hex digit values with '0' on the left
buf.append('0');
}
buf.append(Integer.toHexString(intVal).toUpperCase());
}
}
}
}
return buf == null ? s : buf.toString();
}
public static String encodeString(String string)
{
if (string == null)
{
return "";
}
StringBuilder sb = null;
String app;
char c;
for (int i = 0; i < string.length(); ++i)
{
app = null;
c = string.charAt(i);
switch (c)
{
case '\\' : app = "\\\\"; break;
case '"' : app = "\\\""; break;
case '\'' : app = "\\'"; break;
case '\n' : app = "\\n"; break;
case '\r' : app = "\\r"; break;
default:
}
if (app != null)
{
if (sb == null)
{
sb = new StringBuilder(string.substring(0, i));
}
sb.append(app);
}
else
{
if (sb != null)
{
sb.append(c);
}
}
}
if (sb == null)
{
return string;
}
else
{
return sb.toString();
}
}
public static boolean isRenderClearJavascriptOnButton(ExternalContext externalContext)
{
MyfacesConfig myfacesConfig = MyfacesConfig.getCurrentInstance(externalContext);
return myfacesConfig.isRenderClearJavascriptOnButton();
}
}