/
InternationalizedStringExpression.java
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/
InternationalizedStringExpression.java
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/*
* Copyright (c) 2004-2010, Kohsuke Kawaguchi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided
* that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.kohsuke.stapler.jelly;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import org.apache.commons.jelly.expression.Expression;
import org.apache.commons.jelly.expression.ExpressionSupport;
import org.apache.commons.jelly.JellyException;
import org.apache.commons.jelly.JellyContext;
import org.jvnet.localizer.LocaleProvider;
import org.kohsuke.stapler.Stapler;
import java.util.List;
import java.util.ArrayList;
/**
* Expression of the form "%messageName(arg1,arg2,...)" that represents
* internationalized text.
*
* <p>
* The "(arg1,...)" portion is optional and can be omitted. Each argument
* is assumed to be a parenthesis-balanced expression and passed to
* {@link JellyClassLoaderTearOff#EXPRESSION_FACTORY} to be parsed.
*
* <p>
* The message resource is loaded from files like "xyz.properties" and
* "xyz_ja.properties" when the expression is placed in "xyz.jelly".
*
*
* @author Kohsuke Kawaguchi
*/
public class InternationalizedStringExpression extends ExpressionSupport {
public final ResourceBundle resourceBundle;
private final Expression[] arguments;
public final String key;
public final String expressionText;
public InternationalizedStringExpression(ResourceBundle resourceBundle, String text) throws JellyException {
this.resourceBundle = resourceBundle;
this.expressionText = text;
if(!text.startsWith("%"))
throw new JellyException(text+" doesn't start with %");
text = text.substring(1);
int idx = text.indexOf('(');
if(idx<0) {
// no arguments
key = text;
arguments = EMPTY_ARGUMENTS;
return;
}
List<Expression> args = new ArrayList<>();
key = text.substring(0,idx);
text = text.substring(idx+1); // at this point text="arg,arg)"
while(text.length()>0) {
String token = tokenize(text);
args.add(JellyClassLoaderTearOff.EXPRESSION_FACTORY.createExpression(token));
text = text.substring(token.length()+1);
}
this.arguments = args.toArray(new Expression[0]);
}
public List<Expression> getArguments() {
return List.of(arguments);
}
/**
* Takes a string like "arg)" or "arg,arg,...)", then
* find "arg" and returns it.
*
* Note: this code is also copied into idea-stapler-plugin,
* so don't forget to update that when this code changes.
*/
@SuppressFBWarnings(value = "SF_SWITCH_NO_DEFAULT", justification = "No default needed.")
private String tokenize(String text) throws JellyException {
int parenthesis=0;
for(int idx=0;idx<text.length();idx++) {
char ch = text.charAt(idx);
switch (ch) {
case ',':
if(parenthesis==0)
return text.substring(0,idx);
break;
case '(':
case '{':
case '[':
parenthesis++;
break;
case ')':
if(parenthesis==0)
return text.substring(0,idx);
// fall through
case '}':
case ']':
parenthesis--;
break;
case '"':
case '\'':
// skip strings
idx = text.indexOf(ch,idx+1);
break;
}
}
throw new JellyException(expressionText+" is missing ')' at the end");
}
@Override
public String getExpressionText() {
return expressionText;
}
@Override
public Object evaluate(JellyContext context) {
return format(evaluateArguments(context));
}
private Object format(Object[] args) {
// notify the listener if set
InternationalizedStringExpressionListener listener = (InternationalizedStringExpressionListener) Stapler.getCurrentRequest().getAttribute(LISTENER_NAME);
if(listener!=null)
listener.onUsed(this, args);
return resourceBundle.format(LocaleProvider.getLocale(), key, args);
}
private Object[] evaluateArguments(JellyContext jellyContext) {
Object[] args = new Object[arguments.length];
for (int i = 0; i < args.length; i++)
args[i] = arguments[i].evaluate(jellyContext);
return args;
}
/**
* Creates a new {@link Expression} that performs proper HTML escaping.
*/
public Expression makeEscapingExpression() {
return new ExpressionSupport() {
@Override
public String getExpressionText() {
return expressionText;
}
@Override
public Object evaluate(JellyContext context) {
Object[] args = evaluateArguments(context);
args = Stapler.htmlSafeArguments(args);
return format(args);
}
};
}
/**
* @deprecated Use {@link org.kohsuke.stapler.RawHtmlArgument}
*/
@Deprecated
public static final class RawHtmlArgument extends org.kohsuke.stapler.RawHtmlArgument {
public RawHtmlArgument(Object value) {
super(value);
}
}
private static final Expression[] EMPTY_ARGUMENTS = new Expression[0];
private static final String LISTENER_NAME = InternationalizedStringExpressionListener.class.getName();
}