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package org.apache.velocity.util;
/*
* 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.
*/
import org.apache.velocity.runtime.directive.Directive;
import org.apache.velocity.runtime.parser.node.Node;
import org.apache.velocity.util.introspection.Info;
/**
* This class provides some methods for dynamically
* invoking methods in objects, and some string
* manipulation and formatting methods.
*
* @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
* @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a>
* @version $Id$
*/
public class StringUtils
{
/**
* Creates a string that formats the template filename with line number
* and column of the given Directive. We use this routine to provide a consistent format for displaying
* file errors.
*/
public static String formatFileString(Directive directive)
{
return formatFileString(directive.getTemplateName(), directive.getLine(), directive.getColumn());
}
/**
* Creates a string that formats the template filename with line number
* and column of the given Node. We use this routine to provide a consistent format for displaying
* file errors.
*/
public static String formatFileString(Node node)
{
return formatFileString(node.getTemplateName(), node.getLine(), node.getColumn());
}
/**
* Simply creates a string that formats the template filename with line number
* and column. We use this routine to provide a consistent format for displaying
* file errors.
*/
public static String formatFileString(Info info)
{
return formatFileString(info.getTemplateName(), info.getLine(), info.getColumn());
}
/**
* Simply creates a string that formats the template filename with line number
* and column. We use this routine to provide a consistent format for displaying
* file errors.
* @param template File name of template, can be null
* @param linenum Line number within the file
* @param colnum Column number withing the file at linenum
*/
public static String formatFileString(String template, int linenum, int colnum)
{
StringBuilder buffer = new StringBuilder();
if (org.apache.commons.lang3.StringUtils.isEmpty(template))
{
template = "<unknown template>";
}
buffer.append(template).append("[line ").append(linenum).append(", column ").append(colnum).append(']');
return buffer.toString();
}
}
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