stringBI.java
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freemarker.core.builtins |
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FreeMarker |
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These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
/*
* Copyright (c) 2007 The Visigoth Software Society. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Visigoth Software Society (http://www.visigoths.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the
* project contributors may be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact visigoths@visigoths.org.
*
* 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
* nor may "FreeMarker" or "Visigoth" appear in their names
* without prior written permission of the Visigoth Software Society.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 VISIGOTH SOFTWARE SOCIETY OR
* ITS 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Visigoth Software Society. For more
* information on the Visigoth Software Society, please see
* http://www.visigoths.org/
*/
package freemarker.core.builtins;
import java.text.DateFormat;
import java.text.NumberFormat;
import java.util.Date;
import java.util.List;
import freemarker.core.Environment;
import freemarker.core.ast.BuiltInExpression;
import freemarker.core.ast.EvaluationUtil;
import freemarker.core.ast.TemplateNode;
import freemarker.template.*;
/**
* Implementation of ?string built-in
*/
public class stringBI extends BuiltIn {
public TemplateModel get(TemplateModel target, String builtInName, Environment env, BuiltInExpression callingExpression) throws TemplateException {
if (target instanceof TemplateNumberModel) {
return new NumberFormatter(EvaluationUtil.getNumber(target, callingExpression.getTarget(), env), env);
}
if (target instanceof TemplateDateModel) {
TemplateDateModel dm = (TemplateDateModel) target;
int dateType = dm.getDateType();
return new DateFormatter(EvaluationUtil.getDate(dm, callingExpression.getTarget(), env), dateType, env);
}
if (target instanceof SimpleScalar) {
return target;
}
if (target instanceof TemplateBooleanModel) {
return new BooleanFormatter((TemplateBooleanModel) target, env);
}
if (target instanceof TemplateScalarModel) {
return new SimpleScalar(((TemplateScalarModel) target).getAsString());
}
throw TemplateNode.invalidTypeException(target, callingExpression.getTarget(), env, "number, date, or string");
}
static class BooleanFormatter
implements TemplateScalarModel, LazilyEvaluatableArguments
{
private final TemplateBooleanModel bool;
private final Environment env;
BooleanFormatter(TemplateBooleanModel bool, Environment env) {
this.bool = bool;
this.env = env;
}
public String getAsString() throws TemplateModelException {
if (bool instanceof TemplateScalarModel) {
return ((TemplateScalarModel) bool).getAsString();
} else {
return env.getBooleanFormat(bool.getAsBoolean());
}
}
public Object exec(List arguments)
throws TemplateModelException {
if (arguments.size() != 2) {
throw new TemplateModelException(
"boolean?string(...) requires exactly "
+ "2 arguments.");
}
return new SimpleScalar(
(String) arguments.get(bool.getAsBoolean() ? 0 : 1));
}
}
static class DateFormatter
implements TemplateScalarModel, TemplateHashModel, TemplateMethodModel {
private final Date date;
private final int dateType;
private final Environment env;
private final DateFormat defaultFormat;
private String cachedValue;
DateFormatter(Date date, int dateType, Environment env) throws TemplateModelException {
this.date = date;
this.dateType = dateType;
this.env = env;
defaultFormat = env.getDateFormatObject(dateType);
}
public String getAsString() throws TemplateModelException {
if(dateType == TemplateDateModel.UNKNOWN) {
throw new TemplateModelException("Can't convert the date to string, because it is not known which parts of the date variable are in use. Use ?date, ?time or ?datetime built-in, or ?string.<format> or ?string(format) built-in with this date.");
}
if(cachedValue == null) {
cachedValue = defaultFormat.format(date);
}
return cachedValue;
}
public TemplateModel get(String key)
throws
TemplateModelException
{
return new SimpleScalar(env.getDateFormatObject(dateType, key).format(date));
}
public Object exec(List arguments)
throws TemplateModelException {
if (arguments.size() != 1) {
throw new TemplateModelException(
"date?string(...) requires exactly 1 argument.");
}
return get((String) arguments.get(0));
}
public boolean isEmpty()
{
return false;
}
}
static class NumberFormatter implements TemplateScalarModel, TemplateHashModel, TemplateMethodModel {
private final Number number;
private final Environment env;
private final NumberFormat defaultFormat;
private String cachedValue;
NumberFormatter(Number number, Environment env)
{
this.number = number;
this.env = env;
defaultFormat = env.getNumberFormatObject(env.getNumberFormat());
}
public String getAsString()
{
if(cachedValue == null) {
cachedValue = defaultFormat.format(number);
}
return cachedValue;
}
public TemplateModel get(String key)
{
return new SimpleScalar(env.getNumberFormatObject(key).format(number));
}
@Parameters("format")
public Object exec(List arguments)
throws TemplateModelException {
if (arguments.size() != 1) {
throw new TemplateModelException(
"number?string(...) requires exactly 1 argument.");
}
return get((String) arguments.get(0));
}
public boolean isEmpty()
{
return false;
}
}
}
The table below shows all metrics for stringBI.java.




