openwfe.org.misc.Text Maven / Gradle / Ivy
/*
* Copyright (c) 2001-2006, John Mettraux, OpenWFE.org
* 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.
*
* . Neither the name of the "OpenWFE" nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* 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.
*
* $Id: Text.java 2713 2006-06-01 14:38:45Z jmettraux $
*/
//
// Text.java
//
// [email protected]
//
// generated with
// jtmpl 1.1.01 2004/05/19 ([email protected])
//
package openwfe.org.misc;
/**
* Text formatting static methods
* (for some aspects, it has been obsoleted by Velocity usage)
*
* CVS Info :
*
$Author: jmettraux $
*
$Id: Text.java 2713 2006-06-01 14:38:45Z jmettraux $
*
* @author [email protected]
*/
public abstract class Text
{
/*
private final static org.apache.log4j.Logger log = org.apache.log4j.Logger
.getLogger(Text.class.getName());
*/
//
// CONSTRUCTORS
/**
* (Making it private to prevent any further extensions)
*/
private Text ()
{
super();
}
//
// METHODS
/**
* Given a text and a map, will substitute occurence of "${nada}" with
* the value held for "nada" in the map.
*/
public static String substitute
(final String text, final java.util.Map context)
{
//log.debug("---");
//log.debug("text >"+text+"<");
int j = text.indexOf("}");
//log.debug("j = "+j);
if (j < 0) return text;
String t = text.substring(0, j);
int i = t.lastIndexOf("${");
int ii = t.lastIndexOf("\\${");
//log.debug("i = "+i);
//log.debug("ii = "+ii);
if (i < 0)
//
// didn't find any '${'
//
return text;
if (i != 0 && ii == i-1)
//
// found '\${'
//
return unescape(text);
final String key = text.substring(i+2, j);
//log.debug("key >"+key+"<");
String value = (String)context.get(key);
if (value == null) value = "";
//log.debug("value >"+value+"<");
return substitute
(text.substring(0, i) + value + text.substring(j+1),
context);
}
/**
* Turns "\${vaca}" into "${vaca}" (removes the backslach preceding
* the '${' opening.
*/
public static String unescape (final String text)
{
return text.replaceAll("\\\\\\$\\{", "\\${");
}
/**
* Ensures that a text has the given number of chars (columns).
*/
public static String adjust
(String text, final int columns, final boolean leftAlign)
{
if (columns < 1) return text;
if (text == null) text = "";
final int l = text.length();
if (l == columns) return text;
if (l > columns)
{
if (leftAlign) return text.substring(0, columns);
return text.substring(l - columns);
}
final int delta = columns - l;
final StringBuffer sb = new StringBuffer(text);
for (int i=0; i