DateTime.java
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|---|---|---|
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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.util.Date;
import java.util.List;
import freemarker.core.Environment;
import freemarker.core.ast.BuiltInExpression;
import freemarker.core.ast.TemplateNode;
import freemarker.template.*;
/**
* Implementations of builtins for standard functions
* that operate on sequences
*/
public class DateTime extends BuiltIn {
public TemplateModel get(TemplateModel target, String builtInName, Environment env, BuiltInExpression callingExpression) throws TemplateException {
int dateType = TemplateDateModel.DATETIME;
if ("date" == builtInName) {
dateType = TemplateDateModel.DATE;
}
else if ("time" == builtInName) {
dateType = TemplateDateModel.TIME;
}
if (target instanceof TemplateDateModel) {
TemplateDateModel dmodel = (TemplateDateModel) target;
int dtype = dmodel.getDateType();
// Any date model can be coerced into its own type
if(dateType == dtype) {
return dmodel;
}
// unknown and datetime can be coerced into any date type
if(dtype == TemplateDateModel.UNKNOWN || dtype == TemplateDateModel.DATETIME) {
return new SimpleDate(dmodel.getAsDate(), dateType);
}
throw new TemplateException(
"Cannot convert " + TemplateDateModel.TYPE_NAMES.get(dtype)
+ " into " + TemplateDateModel.TYPE_NAMES.get(dateType), env);
}
else if (target instanceof TemplateScalarModel) {
return new DateParser(((TemplateScalarModel) target).getAsString(), dateType, callingExpression, env);
}
else {
throw TemplateNode.invalidTypeException(target, callingExpression.getTarget(), env, "time/date or string");
}
}
static class DateParser
implements
TemplateDateModel,
TemplateMethodModel,
TemplateHashModel
{
private final String text;
private final Environment env;
private final DateFormat defaultFormat;
private BuiltInExpression callingExpression;
private int dateType;
private Date cachedValue;
DateParser(String text, int dateType, BuiltInExpression callingExpression, Environment env)
throws
TemplateModelException
{
this.text = text;
this.env = env;
this.callingExpression = callingExpression;
this.dateType = dateType;
this.defaultFormat = env.getDateFormatObject(dateType);
}
public Date getAsDate() throws TemplateModelException {
if(cachedValue == null) {
cachedValue = parse(defaultFormat);
}
return cachedValue;
}
public int getDateType() {
return dateType;
}
public TemplateModel get(String pattern) throws TemplateModelException {
return new SimpleDate(
parse(env.getDateFormatObject(dateType, pattern)),
dateType);
}
public Object exec(List arguments)
throws TemplateModelException {
if (arguments.size() != 1) {
throw new TemplateModelException(
"string?" + callingExpression.getName() + "(...) requires exactly 1 argument.");
}
return get((String) arguments.get(0));
}
public boolean isEmpty()
{
return false;
}
private Date parse(DateFormat df)
throws
TemplateModelException
{
try {
return df.parse(text);
}
catch(java.text.ParseException e) {
String mess = "Error: " + callingExpression.getStartLocation()
+ "\nExpecting a date here, found: " + text;
throw new TemplateModelException(mess);
}
}
}
}
The table below shows all metrics for DateTime.java.




