/************************************************************************
*
* Misc.java
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* Copyright: 2002-2008 by Henrik Just
*
* All Rights Reserved.
*
* Version 1.0 (2008-11-22)
*
*/
package writer2latex.util;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.Math;
import java.net.URLEncoder;
import java.net.URLDecoder;
//import java.util.Hashtable;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.NamedNodeMap;
// This class contains some usefull, but unrelated static methods
public class Misc{
private final static int BUFFERSIZE = 1024;
public static final int[] doubleIntArray(int[] array) {
int n = array.length;
int[] newArray = new int[2*n];
for (int i=0; i<n; i++) { newArray[i] = array[i]; }
return newArray;
}
public static final String int2roman(int number) {
StringBuffer roman=new StringBuffer();
while (number>=1000) { roman.append('m'); number-=1000; }
if (number>=900) { roman.append("cm"); number-=900; }
if (number>=500) { roman.append('d'); number-=500; }
if (number>=400) { roman.append("cd"); number-=400; }
while (number>=100) { roman.append('c'); number-=100; }
if (number>=90) { roman.append("xc"); number-=90; }
if (number>=50) { roman.append('l'); number-=50; }
if (number>=40) { roman.append("xl"); number-=40; }
while (number>=10) { roman.append('x'); number-=10; }
if (number>=9) { roman.append("ix"); number-=9; }
if (number>=5) { roman.append('v'); number-=5; }
if (number>=4) { roman.append("iv"); number-=4; }
while (number>=1) { roman.append('i'); number-=1; }
return roman.toString();
}
public static final String int2Roman(int number) {
return int2roman(number).toUpperCase();
}
public static final String int2arabic(int number) {
return new Integer(number).toString();
}
public static final String int2alph(int number, boolean bLetterSync) {
// TODO: Handle overflow/lettersync
return new Character((char) (number+96)).toString();
}
public static final String int2Alph(int number, boolean bLetterSync) {
return int2alph(number,bLetterSync).toUpperCase();
}
public static final int getPosInteger(String sInteger, int nDefault){
int n;
try {
n=Integer.parseInt(sInteger);
}
catch (NumberFormatException e) {
return nDefault;
}
return n>0 ? n : nDefault;
}
public static final float getFloat(String sFloat, float fDefault){
float f;
try {
f=Float.parseFloat(sFloat);
}
catch (NumberFormatException e) {
return fDefault;
}
return f;
}
public static final int getIntegerFromHex(String sHex, int nDefault){
int n;
try {
n=Integer.parseInt(sHex,16);
}
catch (NumberFormatException e) {
return nDefault;
}
return n;
}
public static int min(int n, int m) { return n<m ? n : m; }
public static String truncateLength(String sValue) {
if (sValue.endsWith("inch")) {
// Cut of inch to in
return sValue.substring(0,sValue.length()-2);
}
else {
return sValue;
}
}
// Return units per inch for some unit
private static final float getUpi(String sUnit) {
if ("in".equals(sUnit)) { return 1.0F; }
else if ("mm".equals(sUnit)) { return 25.4F; }
else if ("cm".equals(sUnit)) { return 2.54F; }
else if ("pc".equals(sUnit)) { return 6F; }
else { return 72; } // pt or unknown
}
// Convert a length to px assuming 96ppi (cf. css spec)
// Exception: Never return less than 1px
public static final String length2px(String sLength) {
if (sLength.equals("0")) { return "0"; }
float fLength=getFloat(sLength.substring(0,sLength.length()-2),1);
String sUnit=sLength.substring(sLength.length()-2);
float fPixels = 96.0F/getUpi(sUnit)*fLength;
if (Math.abs(fPixels)<0.01) {
// Very small, treat as zero
return "0";
}
else if (fPixels>0) {
// Never return less that 1px
return Float.toString(fPixels<1 ? 1 : fPixels)+"px";
}
else {
// Or above -1px
return Float.toString(fPixels>-1 ? -1 : fPixels)+"px";
}
}
public static final String multiply(String sPercent, String sLength){
if (sLength.equals("0")) { return "0"; }
float fPercent=getFloat(sPercent.substring(0,sPercent.length()-1),1);
float fLength=getFloat(sLength.substring(0,sLength.length()-2),1);
String sUnit=sLength.substring(sLength.length()-2);
return Float.toString(fPercent*fLength/100)+sUnit;
}
public static final String add(String sLength1, String sLength2){
if (sLength1.equals("0")) { return sLength2; }
if (sLength2.equals("0")) { return sLength1; }
float fLength1=getFloat(sLength1.substring(0,sLength1.length()-2),1);
String sUnit1=sLength1.substring(sLength1.length()-2);
float fLength2=getFloat(sLength2.substring(0,sLength2.length()-2),1);
String sUnit2=sLength2.substring(sLength2.length()-2);
// Use unit from sLength1:
return Float.toString(fLength1+getUpi(sUnit1)/getUpi(sUnit2)*fLength2)+sUnit1;
}
public static final String sub(String sLength1, String sLength2){
return add(sLength1,multiply("-100%",sLength2));
}
public static boolean isLessThan(String sThis, String sThat) {
return sub(sThis,sThat).startsWith("-");
}
public static String abs(String sLength) {
return sLength.startsWith("-") ? sLength.substring(1) : sLength;
}
/*
* Utility method to make sure the document name is stripped of any file
* extensions before use.
* (this is copied verbatim from PocketWord.java in xmerge)
*/
public static final String trimDocumentName(String name,String extension) {
String temp = name.toLowerCase();
if (temp.endsWith(extension)) {
// strip the extension
int nlen = name.length();
int endIndex = nlen - extension.length();
name = name.substring(0,endIndex);
}
return name;
}
public static final String removeExtension(String sName) {
int n = sName.lastIndexOf(".");
if (n<0) { return sName; }
return sName.substring(0,n);
}
/*
* Utility method to retrieve a Node attribute or null
*/
public static final String getAttribute (Node node, String attribute) {
NamedNodeMap attrNodes = node.getAttributes();
if (attrNodes != null) {
Node attr = attrNodes.getNamedItem(attribute);
if (attr != null) {
return attr.getNodeValue();
}
}
return null;
}
public static final boolean isElement(Node node) {
return node.getNodeType()==Node.ELEMENT_NODE;
}
/* Utility method to determine if a Node is a specific Element
*/
public static final boolean isElement(Node node, String sTagName) {
return node.getNodeType()==Node.ELEMENT_NODE
&& node.getNodeName().equals(sTagName);
}
public static final boolean isText(Node node) {
return node.getNodeType()==Node.TEXT_NODE;
}
/*
* Utility method to retrieve an element attribute or null
*/
public static final String getAttribute (Element node, String attribute) {
if (node.hasAttribute(attribute)) { return node.getAttribute(attribute); }
else { return null; }
}
/* utility method to get the first child with a given tagname */
public static final Element getChildByTagName(Node node, String sTagName){
if (node.hasChildNodes()){
NodeList nl=node.getChildNodes();
int nLen=nl.getLength();
for (int i=0; i<nLen; i++){
Node child = nl.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE &&
child.getNodeName().equals(sTagName)){
return (Element) child;
}
}
}
return null;
}
/* utility method to get the first <em>element</em> child of a node*/
public static final Element getFirstChildElement(Node node) {
Node child = node.getFirstChild();
while (child!=null) {
if (child.getNodeType()==Node.ELEMENT_NODE) {
return (Element) child;
}
child = child.getNextSibling();
}
return null;
}
/* utility method that collects PCDATA content of an element */
public static String getPCDATA(Node node) {
StringBuffer buf = new StringBuffer();
if (node.hasChildNodes()) {
NodeList nl = node.getChildNodes();
int nLen = nl.getLength();
for (int i=0; i<nLen; i++) {
if (nl.item(i).getNodeType()==Node.TEXT_NODE) {
buf.append(nl.item(i).getNodeValue());
}
}
}
return buf.toString();
}
/* Utility method that url encodes a string */
public static String urlEncode(String s) {
try {
return URLEncoder.encode(s,"UTF-8");
}
catch (UnsupportedEncodingException e) {
return "";
}
}
/* Utility method that url decodes a string */
public static String urlDecode(String s) {
try {
return URLDecoder.decode(s,"UTF-8");
}
catch (UnsupportedEncodingException e) {
return "";
}
}
/* utility method to make a file name valid for a href attribute
(ie. replace spaces with %20 etc.)
*/
public static String makeHref(String s) {
try {
java.net.URI uri = new java.net.URI(null, null, s, null);
return uri.toString();
}
catch (Exception e) {
e.printStackTrace();
}
return "error";
}
/** <p>Read an <code>InputStream</code> into a <code>byte</code>array</p>
* @param is the <code>InputStream</code> to read
* @return a byte array with the contents read from the stream
* @throws IOException in case of any I/O errors.
*/
public static byte[] inputStreamToByteArray(InputStream is) throws IOException {
if (is==null) {
throw new IOException ("No input stream to read");
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int nLen = 0;
byte buffer[] = new byte[BUFFERSIZE];
while ((nLen = is.read(buffer)) > 0) {
baos.write(buffer, 0, nLen);
}
return baos.toByteArray();
}
}