Java example source code file (BasisLibrary.java)
The BasisLibrary.java Java example source code/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* Copyright 2001-2004 The Apache Software Foundation.
*
* Licensed 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.
*/
/*
* $Id: BasisLibrary.java,v 1.6 2006/06/20 21:51:58 spericas Exp $
*/
package com.sun.org.apache.xalan.internal.xsltc.runtime;
import com.sun.org.apache.xalan.internal.utils.SecuritySupport;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.FieldPosition;
import java.text.MessageFormat;
import java.text.NumberFormat;
import java.util.Locale;
import java.util.ResourceBundle;
import javax.xml.transform.dom.DOMSource;
import com.sun.org.apache.xalan.internal.xsltc.DOM;
import com.sun.org.apache.xalan.internal.xsltc.Translet;
import com.sun.org.apache.xalan.internal.xsltc.dom.AbsoluteIterator;
import com.sun.org.apache.xml.internal.dtm.Axis;
import com.sun.org.apache.xalan.internal.xsltc.dom.DOMAdapter;
import com.sun.org.apache.xalan.internal.xsltc.dom.MultiDOM;
import com.sun.org.apache.xalan.internal.xsltc.dom.SingletonIterator;
import com.sun.org.apache.xalan.internal.xsltc.dom.StepIterator;
import com.sun.org.apache.xalan.internal.xsltc.dom.ArrayNodeListIterator;
import com.sun.org.apache.xml.internal.dtm.DTM;
import com.sun.org.apache.xml.internal.dtm.DTMAxisIterator;
import com.sun.org.apache.xml.internal.dtm.DTMManager;
import com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase;
import com.sun.org.apache.xml.internal.dtm.ref.DTMNodeProxy;
import org.w3c.dom.DOMException;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import com.sun.org.apache.xml.internal.serializer.NamespaceMappings;
import com.sun.org.apache.xml.internal.serializer.SerializationHandler;
import com.sun.org.apache.xml.internal.utils.XML11Char;
/**
* Standard XSLT functions. All standard functions expect the current node
* and the DOM as their last two arguments.
*/
public final class BasisLibrary {
private final static String EMPTYSTRING = "";
/**
* Re-use a single instance of StringBuffer (per thread) in the basis library.
* StringBuilder is better, however, DecimalFormat only accept StringBuffer
*/
private static final ThreadLocal<StringBuilder> threadLocalStringBuilder =
new ThreadLocal<StringBuilder> () {
@Override protected StringBuilder initialValue() {
return new StringBuilder();
}
};
/**
* ThreadLocal for StringBuffer used
*/
private static final ThreadLocal<StringBuffer> threadLocalStringBuffer =
new ThreadLocal<StringBuffer> () {
@Override protected StringBuffer initialValue() {
return new StringBuffer();
}
};
/**
* Standard function count(node-set)
*/
public static int countF(DTMAxisIterator iterator) {
return(iterator.getLast());
}
/**
* Standard function position()
* @deprecated This method exists only for backwards compatibility with old
* translets. New code should not reference it.
*/
public static int positionF(DTMAxisIterator iterator) {
return iterator.isReverse()
? iterator.getLast() - iterator.getPosition() + 1
: iterator.getPosition();
}
/**
* XSLT Standard function sum(node-set).
* stringToDouble is inlined
*/
public static double sumF(DTMAxisIterator iterator, DOM dom) {
try {
double result = 0.0;
int node;
while ((node = iterator.next()) != DTMAxisIterator.END) {
result += Double.parseDouble(dom.getStringValueX(node));
}
return result;
}
catch (NumberFormatException e) {
return Double.NaN;
}
}
/**
* XSLT Standard function string()
*/
public static String stringF(int node, DOM dom) {
return dom.getStringValueX(node);
}
/**
* XSLT Standard function string(value)
*/
public static String stringF(Object obj, DOM dom) {
if (obj instanceof DTMAxisIterator) {
return dom.getStringValueX(((DTMAxisIterator)obj).reset().next());
}
else if (obj instanceof Node) {
return dom.getStringValueX(((Node)obj).node);
}
else if (obj instanceof DOM) {
return ((DOM)obj).getStringValue();
}
else {
return obj.toString();
}
}
/**
* XSLT Standard function string(value)
*/
public static String stringF(Object obj, int node, DOM dom) {
if (obj instanceof DTMAxisIterator) {
return dom.getStringValueX(((DTMAxisIterator)obj).reset().next());
}
else if (obj instanceof Node) {
return dom.getStringValueX(((Node)obj).node);
}
else if (obj instanceof DOM) {
// When the first argument is a DOM we want the whole
// DOM and not just a single node - that would not make sense.
//return ((DOM)obj).getStringValueX(node);
return ((DOM)obj).getStringValue();
}
else if (obj instanceof Double) {
Double d = (Double)obj;
final String result = d.toString();
final int length = result.length();
if ((result.charAt(length-2)=='.') &&
(result.charAt(length-1) == '0'))
return result.substring(0, length-2);
else
return result;
}
else {
return obj != null ? obj.toString() : "";
}
}
/**
* XSLT Standard function number()
*/
public static double numberF(int node, DOM dom) {
return stringToReal(dom.getStringValueX(node));
}
/**
* XSLT Standard function number(value)
*/
public static double numberF(Object obj, DOM dom) {
if (obj instanceof Double) {
return ((Double) obj).doubleValue();
}
else if (obj instanceof Integer) {
return ((Integer) obj).doubleValue();
}
else if (obj instanceof Boolean) {
return ((Boolean) obj).booleanValue() ? 1.0 : 0.0;
}
else if (obj instanceof String) {
return stringToReal((String) obj);
}
else if (obj instanceof DTMAxisIterator) {
DTMAxisIterator iter = (DTMAxisIterator) obj;
return stringToReal(dom.getStringValueX(iter.reset().next()));
}
else if (obj instanceof Node) {
return stringToReal(dom.getStringValueX(((Node) obj).node));
}
else if (obj instanceof DOM) {
return stringToReal(((DOM) obj).getStringValue());
}
else {
final String className = obj.getClass().getName();
runTimeError(INVALID_ARGUMENT_ERR, className, "number()");
return 0.0;
}
}
/**
* XSLT Standard function round()
*/
public static double roundF(double d) {
return (d<-0.5 || d>0.0)?Math.floor(d+0.5):((d==0.0)?
d:(Double.isNaN(d)?Double.NaN:-0.0));
}
/**
* XSLT Standard function boolean()
*/
public static boolean booleanF(Object obj) {
if (obj instanceof Double) {
final double temp = ((Double) obj).doubleValue();
return temp != 0.0 && !Double.isNaN(temp);
}
else if (obj instanceof Integer) {
return ((Integer) obj).doubleValue() != 0;
}
else if (obj instanceof Boolean) {
return ((Boolean) obj).booleanValue();
}
else if (obj instanceof String) {
return !((String) obj).equals(EMPTYSTRING);
}
else if (obj instanceof DTMAxisIterator) {
DTMAxisIterator iter = (DTMAxisIterator) obj;
return iter.reset().next() != DTMAxisIterator.END;
}
else if (obj instanceof Node) {
return true;
}
else if (obj instanceof DOM) {
String temp = ((DOM) obj).getStringValue();
return !temp.equals(EMPTYSTRING);
}
else {
final String className = obj.getClass().getName();
runTimeError(INVALID_ARGUMENT_ERR, className, "boolean()");
}
return false;
}
/**
* XSLT Standard function substring(). Must take a double because of
* conversions resulting into NaNs and rounding.
*/
public static String substringF(String value, double start) {
if (Double.isNaN(start))
return(EMPTYSTRING);
final int strlen = value.length();
int istart = (int)Math.round(start) - 1;
if (istart > strlen)
return(EMPTYSTRING);
if (istart < 1)
istart = 0;
try {
return value.substring(istart);
} catch (IndexOutOfBoundsException e) {
runTimeError(RUN_TIME_INTERNAL_ERR, "substring()");
return null;
}
}
/**
* XSLT Standard function substring(). Must take a double because of
* conversions resulting into NaNs and rounding.
*/
public static String substringF(String value, double start, double length) {
if (Double.isInfinite(start) ||
Double.isNaN(start) ||
Double.isNaN(length))
return(EMPTYSTRING);
int istart = (int)Math.round(start) - 1;
final int isum;
if (Double.isInfinite(length))
isum = Integer.MAX_VALUE;
else
isum = istart + (int)Math.round(length);
final int strlen = value.length();
if (isum < 0 || istart > strlen)
return(EMPTYSTRING);
if (istart < 0)
istart = 0;
try {
if (isum > strlen)
return value.substring(istart);
else
return value.substring(istart, isum);
} catch (IndexOutOfBoundsException e) {
runTimeError(RUN_TIME_INTERNAL_ERR, "substring()");
return null;
}
}
/**
* XSLT Standard function substring-after().
*/
public static String substring_afterF(String value, String substring) {
final int index = value.indexOf(substring);
if (index >= 0)
return value.substring(index + substring.length());
else
return EMPTYSTRING;
}
/**
* XSLT Standard function substring-before().
*/
public static String substring_beforeF(String value, String substring) {
final int index = value.indexOf(substring);
if (index >= 0)
return value.substring(0, index);
else
return EMPTYSTRING;
}
/**
* XSLT Standard function translate().
*/
public static String translateF(String value, String from, String to) {
final int tol = to.length();
final int froml = from.length();
final int valuel = value.length();
final StringBuilder result = threadLocalStringBuilder.get();
result.setLength(0);
for (int j, i = 0; i < valuel; i++) {
final char ch = value.charAt(i);
for (j = 0; j < froml; j++) {
if (ch == from.charAt(j)) {
if (j < tol)
result.append(to.charAt(j));
break;
}
}
if (j == froml)
result.append(ch);
}
return result.toString();
}
/**
* XSLT Standard function normalize-space().
*/
public static String normalize_spaceF(int node, DOM dom) {
return normalize_spaceF(dom.getStringValueX(node));
}
/**
* XSLT Standard function normalize-space(string).
*/
public static String normalize_spaceF(String value) {
int i = 0, n = value.length();
StringBuilder result = threadLocalStringBuilder.get();
result.setLength(0);
while (i < n && isWhiteSpace(value.charAt(i)))
i++;
while (true) {
while (i < n && !isWhiteSpace(value.charAt(i))) {
result.append(value.charAt(i++));
}
if (i == n)
break;
while (i < n && isWhiteSpace(value.charAt(i))) {
i++;
}
if (i < n)
result.append(' ');
}
return result.toString();
}
/**
* XSLT Standard function generate-id().
*/
public static String generate_idF(int node) {
if (node > 0)
// Only generate ID if node exists
return "N" + node;
else
// Otherwise return an empty string
return EMPTYSTRING;
}
/**
* utility function for calls to local-name().
*/
public static String getLocalName(String value) {
int idx = value.lastIndexOf(':');
if (idx >= 0) value = value.substring(idx + 1);
idx = value.lastIndexOf('@');
if (idx >= 0) value = value.substring(idx + 1);
return(value);
}
/**
* External functions that cannot be resolved are replaced with a call
* to this method. This method will generate a runtime errors. A good
* stylesheet checks whether the function exists using conditional
* constructs, and never really tries to call it if it doesn't exist.
* But simple stylesheets may result in a call to this method.
* The compiler should generate a warning if it encounters a call to
* an unresolved external function.
*/
public static void unresolved_externalF(String name) {
runTimeError(EXTERNAL_FUNC_ERR, name);
}
/**
* Utility function to throw a runtime error on the use of an extension
* function when the secure processing feature is set to true.
*/
public static void unallowed_extension_functionF(String name) {
runTimeError(UNALLOWED_EXTENSION_FUNCTION_ERR, name);
}
/**
* Utility function to throw a runtime error on the use of an extension
* element when the secure processing feature is set to true.
*/
public static void unallowed_extension_elementF(String name) {
runTimeError(UNALLOWED_EXTENSION_ELEMENT_ERR, name);
}
/**
* Utility function to throw a runtime error for an unsupported element.
*
* This is only used in forward-compatibility mode, when the control flow
* cannot be determined. In 1.0 mode, the error message is emitted at
* compile time.
*/
public static void unsupported_ElementF(String qname, boolean isExtension) {
if (isExtension)
runTimeError(UNSUPPORTED_EXT_ERR, qname);
else
runTimeError(UNSUPPORTED_XSL_ERR, qname);
}
/**
* XSLT Standard function namespace-uri(node-set).
*/
public static String namespace_uriF(DTMAxisIterator iter, DOM dom) {
return namespace_uriF(iter.next(), dom);
}
/**
* XSLT Standard function system-property(name)
*/
public static String system_propertyF(String name) {
if (name.equals("xsl:version"))
return("1.0");
if (name.equals("xsl:vendor"))
return("Apache Software Foundation (Xalan XSLTC)");
if (name.equals("xsl:vendor-url"))
return("http://xml.apache.org/xalan-j");
runTimeError(INVALID_ARGUMENT_ERR, name, "system-property()");
return(EMPTYSTRING);
}
/**
* XSLT Standard function namespace-uri().
*/
public static String namespace_uriF(int node, DOM dom) {
final String value = dom.getNodeName(node);
final int colon = value.lastIndexOf(':');
if (colon >= 0)
return value.substring(0, colon);
else
return EMPTYSTRING;
}
/**
* Implements the object-type() extension function.
*
* @see <a href="http://www.exslt.org/">EXSLT
*/
public static String objectTypeF(Object obj)
{
if (obj instanceof String)
return "string";
else if (obj instanceof Boolean)
return "boolean";
else if (obj instanceof Number)
return "number";
else if (obj instanceof DOM)
return "RTF";
else if (obj instanceof DTMAxisIterator)
return "node-set";
else
return "unknown";
}
/**
* Implements the nodeset() extension function.
*/
public static DTMAxisIterator nodesetF(Object obj) {
if (obj instanceof DOM) {
//final DOMAdapter adapter = (DOMAdapter) obj;
final DOM dom = (DOM)obj;
return new SingletonIterator(dom.getDocument(), true);
}
else if (obj instanceof DTMAxisIterator) {
return (DTMAxisIterator) obj;
}
else {
final String className = obj.getClass().getName();
runTimeError(DATA_CONVERSION_ERR, "node-set", className);
return null;
}
}
//-- Begin utility functions
private static boolean isWhiteSpace(char ch) {
return ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r';
}
private static boolean compareStrings(String lstring, String rstring,
int op, DOM dom) {
switch (op) {
case Operators.EQ:
return lstring.equals(rstring);
case Operators.NE:
return !lstring.equals(rstring);
case Operators.GT:
return numberF(lstring, dom) > numberF(rstring, dom);
case Operators.LT:
return numberF(lstring, dom) < numberF(rstring, dom);
case Operators.GE:
return numberF(lstring, dom) >= numberF(rstring, dom);
case Operators.LE:
return numberF(lstring, dom) <= numberF(rstring, dom);
default:
runTimeError(RUN_TIME_INTERNAL_ERR, "compare()");
return false;
}
}
/**
* Utility function: node-set/node-set compare.
*/
public static boolean compare(DTMAxisIterator left, DTMAxisIterator right,
int op, DOM dom) {
int lnode;
left.reset();
while ((lnode = left.next()) != DTMAxisIterator.END) {
final String lvalue = dom.getStringValueX(lnode);
int rnode;
right.reset();
while ((rnode = right.next()) != DTMAxisIterator.END) {
// String value must be the same if both nodes are the same
if (lnode == rnode) {
if (op == Operators.EQ) {
return true;
} else if (op == Operators.NE) {
continue;
}
}
if (compareStrings(lvalue, dom.getStringValueX(rnode), op,
dom)) {
return true;
}
}
}
return false;
}
public static boolean compare(int node, DTMAxisIterator iterator,
int op, DOM dom) {
//iterator.reset();
int rnode;
String value;
switch(op) {
case Operators.EQ:
rnode = iterator.next();
if (rnode != DTMAxisIterator.END) {
value = dom.getStringValueX(node);
do {
if (node == rnode
|| value.equals(dom.getStringValueX(rnode))) {
return true;
}
} while ((rnode = iterator.next()) != DTMAxisIterator.END);
}
break;
case Operators.NE:
rnode = iterator.next();
if (rnode != DTMAxisIterator.END) {
value = dom.getStringValueX(node);
do {
if (node != rnode
&& !value.equals(dom.getStringValueX(rnode))) {
return true;
}
} while ((rnode = iterator.next()) != DTMAxisIterator.END);
}
break;
case Operators.LT:
// Assume we're comparing document order here
while ((rnode = iterator.next()) != DTMAxisIterator.END) {
if (rnode > node) return true;
}
break;
case Operators.GT:
// Assume we're comparing document order here
while ((rnode = iterator.next()) != DTMAxisIterator.END) {
if (rnode < node) return true;
}
break;
}
return(false);
}
/**
* Utility function: node-set/number compare.
*/
public static boolean compare(DTMAxisIterator left, final double rnumber,
final int op, DOM dom) {
int node;
//left.reset();
switch (op) {
case Operators.EQ:
while ((node = left.next()) != DTMAxisIterator.END) {
if (numberF(dom.getStringValueX(node), dom) == rnumber)
return true;
}
break;
case Operators.NE:
while ((node = left.next()) != DTMAxisIterator.END) {
if (numberF(dom.getStringValueX(node), dom) != rnumber)
return true;
}
break;
case Operators.GT:
while ((node = left.next()) != DTMAxisIterator.END) {
if (numberF(dom.getStringValueX(node), dom) > rnumber)
return true;
}
break;
case Operators.LT:
while ((node = left.next()) != DTMAxisIterator.END) {
if (numberF(dom.getStringValueX(node), dom) < rnumber)
return true;
}
break;
case Operators.GE:
while ((node = left.next()) != DTMAxisIterator.END) {
if (numberF(dom.getStringValueX(node), dom) >= rnumber)
return true;
}
break;
case Operators.LE:
while ((node = left.next()) != DTMAxisIterator.END) {
if (numberF(dom.getStringValueX(node), dom) <= rnumber)
return true;
}
break;
default:
runTimeError(RUN_TIME_INTERNAL_ERR, "compare()");
}
return false;
}
/**
* Utility function: node-set/string comparison.
*/
public static boolean compare(DTMAxisIterator left, final String rstring,
int op, DOM dom) {
int node;
//left.reset();
while ((node = left.next()) != DTMAxisIterator.END) {
if (compareStrings(dom.getStringValueX(node), rstring, op, dom)) {
return true;
}
}
return false;
}
public static boolean compare(Object left, Object right,
int op, DOM dom)
{
boolean result = false;
boolean hasSimpleArgs = hasSimpleType(left) && hasSimpleType(right);
if (op != Operators.EQ && op != Operators.NE) {
// If node-boolean comparison -> convert node to boolean
if (left instanceof Node || right instanceof Node) {
if (left instanceof Boolean) {
right = new Boolean(booleanF(right));
hasSimpleArgs = true;
}
if (right instanceof Boolean) {
left = new Boolean(booleanF(left));
hasSimpleArgs = true;
}
}
if (hasSimpleArgs) {
switch (op) {
case Operators.GT:
return numberF(left, dom) > numberF(right, dom);
case Operators.LT:
return numberF(left, dom) < numberF(right, dom);
case Operators.GE:
return numberF(left, dom) >= numberF(right, dom);
case Operators.LE:
return numberF(left, dom) <= numberF(right, dom);
default:
runTimeError(RUN_TIME_INTERNAL_ERR, "compare()");
}
}
// falls through
}
if (hasSimpleArgs) {
if (left instanceof Boolean || right instanceof Boolean) {
result = booleanF(left) == booleanF(right);
}
else if (left instanceof Double || right instanceof Double ||
left instanceof Integer || right instanceof Integer) {
result = numberF(left, dom) == numberF(right, dom);
}
else { // compare them as strings
result = stringF(left, dom).equals(stringF(right, dom));
}
if (op == Operators.NE) {
result = !result;
}
}
else {
if (left instanceof Node) {
left = new SingletonIterator(((Node)left).node);
}
if (right instanceof Node) {
right = new SingletonIterator(((Node)right).node);
}
if (hasSimpleType(left) ||
left instanceof DOM && right instanceof DTMAxisIterator) {
// swap operands and operator
final Object temp = right; right = left; left = temp;
op = Operators.swapOp(op);
}
if (left instanceof DOM) {
if (right instanceof Boolean) {
result = ((Boolean)right).booleanValue();
return result == (op == Operators.EQ);
}
final String sleft = ((DOM)left).getStringValue();
if (right instanceof Number) {
result = ((Number)right).doubleValue() ==
stringToReal(sleft);
}
else if (right instanceof String) {
result = sleft.equals((String)right);
}
else if (right instanceof DOM) {
result = sleft.equals(((DOM)right).getStringValue());
}
if (op == Operators.NE) {
result = !result;
}
return result;
}
// Next, node-set/t for t in {real, string, node-set, result-tree}
DTMAxisIterator iter = ((DTMAxisIterator)left).reset();
if (right instanceof DTMAxisIterator) {
result = compare(iter, (DTMAxisIterator)right, op, dom);
}
else if (right instanceof String) {
result = compare(iter, (String)right, op, dom);
}
else if (right instanceof Number) {
final double temp = ((Number)right).doubleValue();
result = compare(iter, temp, op, dom);
}
else if (right instanceof Boolean) {
boolean temp = ((Boolean)right).booleanValue();
result = (iter.reset().next() != DTMAxisIterator.END) == temp;
}
else if (right instanceof DOM) {
result = compare(iter, ((DOM)right).getStringValue(),
op, dom);
}
else if (right == null) {
return(false);
}
else {
final String className = right.getClass().getName();
runTimeError(INVALID_ARGUMENT_ERR, className, "compare()");
}
}
return result;
}
/**
* Utility function: used to test context node's language
*/
public static boolean testLanguage(String testLang, DOM dom, int node) {
// language for context node (if any)
String nodeLang = dom.getLanguage(node);
if (nodeLang == null)
return(false);
else
nodeLang = nodeLang.toLowerCase();
// compare context node's language agains test language
testLang = testLang.toLowerCase();
if (testLang.length() == 2) {
return(nodeLang.startsWith(testLang));
}
else {
return(nodeLang.equals(testLang));
}
}
private static boolean hasSimpleType(Object obj) {
return obj instanceof Boolean || obj instanceof Double ||
obj instanceof Integer || obj instanceof String ||
obj instanceof Node || obj instanceof DOM;
}
/**
* Utility function: used in StringType to convert a string to a real.
*/
public static double stringToReal(String s) {
try {
return Double.valueOf(s).doubleValue();
}
catch (NumberFormatException e) {
return Double.NaN;
}
}
/**
* Utility function: used in StringType to convert a string to an int.
*/
public static int stringToInt(String s) {
try {
return Integer.parseInt(s);
}
catch (NumberFormatException e) {
return(-1); // ???
}
}
private static final int DOUBLE_FRACTION_DIGITS = 340;
private static final double lowerBounds = 0.001;
private static final double upperBounds = 10000000;
private static DecimalFormat defaultFormatter, xpathFormatter;
private static String defaultPattern = "";
static {
NumberFormat f = NumberFormat.getInstance(Locale.getDefault());
defaultFormatter = (f instanceof DecimalFormat) ?
(DecimalFormat) f : new DecimalFormat();
// Set max fraction digits so that truncation does not occur. Setting
// the max to Integer.MAX_VALUE may cause problems with some JDK's.
defaultFormatter.setMaximumFractionDigits(DOUBLE_FRACTION_DIGITS);
defaultFormatter.setMinimumFractionDigits(0);
defaultFormatter.setMinimumIntegerDigits(1);
defaultFormatter.setGroupingUsed(false);
// This formatter is used to convert numbers according to the XPath
// 1.0 syntax which ignores locales (http://www.w3.org/TR/xpath#NT-Number)
xpathFormatter = new DecimalFormat("",
new DecimalFormatSymbols(Locale.US));
xpathFormatter.setMaximumFractionDigits(DOUBLE_FRACTION_DIGITS);
xpathFormatter.setMinimumFractionDigits(0);
xpathFormatter.setMinimumIntegerDigits(1);
xpathFormatter.setGroupingUsed(false);
}
/**
* Utility function: used in RealType to convert a real to a string.
* Removes the decimal if null. Uses a specialized formatter object
* for very large and very small numbers that ignores locales, thus
* using always using "." as a decimal separator.
*/
public static String realToString(double d) {
final double m = Math.abs(d);
if ((m >= lowerBounds) && (m < upperBounds)) {
final String result = Double.toString(d);
final int length = result.length();
// Remove leading zeros.
if ((result.charAt(length-2) == '.') &&
(result.charAt(length-1) == '0'))
return result.substring(0, length-2);
else
return result;
}
else {
if (Double.isNaN(d) || Double.isInfinite(d))
return(Double.toString(d));
//Convert -0.0 to +0.0 other values remains the same
d = d + 0.0;
// Use the XPath formatter to ignore locales
StringBuffer result = threadLocalStringBuffer.get();
result.setLength(0);
xpathFormatter.format(d, result, _fieldPosition);
return result.toString();
}
}
/**
* Utility function: used in RealType to convert a real to an integer
*/
public static int realToInt(double d) {
return (int)d;
}
/**
* Utility function: used to format/adjust a double to a string. The
* DecimalFormat object comes from the 'formatSymbols' hashtable in
* AbstractTranslet.
*/
private static FieldPosition _fieldPosition = new FieldPosition(0);
public static String formatNumber(double number, String pattern,
DecimalFormat formatter) {
// bugzilla fix 12813
if (formatter == null) {
formatter = defaultFormatter;
}
try {
StringBuffer result = threadLocalStringBuffer.get();
result.setLength(0);
if (pattern != defaultPattern) {
formatter.applyLocalizedPattern(pattern);
}
formatter.format(number, result, _fieldPosition);
return result.toString();
}
catch (IllegalArgumentException e) {
runTimeError(FORMAT_NUMBER_ERR, Double.toString(number), pattern);
return(EMPTYSTRING);
}
}
/**
* Utility function: used to convert references to node-sets. If the
* obj is an instanceof Node then create a singleton iterator.
*/
public static DTMAxisIterator referenceToNodeSet(Object obj) {
// Convert var/param -> node
if (obj instanceof Node) {
return(new SingletonIterator(((Node)obj).node));
}
// Convert var/param -> node-set
else if (obj instanceof DTMAxisIterator) {
return(((DTMAxisIterator)obj).cloneIterator().reset());
}
else {
final String className = obj.getClass().getName();
runTimeError(DATA_CONVERSION_ERR, className, "node-set");
return null;
}
}
/**
* Utility function: used to convert reference to org.w3c.dom.NodeList.
*/
public static NodeList referenceToNodeList(Object obj, DOM dom) {
if (obj instanceof Node || obj instanceof DTMAxisIterator) {
DTMAxisIterator iter = referenceToNodeSet(obj);
return dom.makeNodeList(iter);
}
else if (obj instanceof DOM) {
dom = (DOM)obj;
return dom.makeNodeList(DTMDefaultBase.ROOTNODE);
}
else {
final String className = obj.getClass().getName();
runTimeError(DATA_CONVERSION_ERR, className,
"org.w3c.dom.NodeList");
return null;
}
}
/**
* Utility function: used to convert reference to org.w3c.dom.Node.
*/
public static org.w3c.dom.Node referenceToNode(Object obj, DOM dom) {
if (obj instanceof Node || obj instanceof DTMAxisIterator) {
DTMAxisIterator iter = referenceToNodeSet(obj);
return dom.makeNode(iter);
}
else if (obj instanceof DOM) {
dom = (DOM)obj;
DTMAxisIterator iter = dom.getChildren(DTMDefaultBase.ROOTNODE);
return dom.makeNode(iter);
}
else {
final String className = obj.getClass().getName();
runTimeError(DATA_CONVERSION_ERR, className, "org.w3c.dom.Node");
return null;
}
}
/**
* Utility function: used to convert reference to long.
*/
public static long referenceToLong(Object obj) {
if (obj instanceof Number) {
return ((Number) obj).longValue(); // handles Integer and Double
}
else {
final String className = obj.getClass().getName();
runTimeError(DATA_CONVERSION_ERR, className, Long.TYPE);
return 0;
}
}
/**
* Utility function: used to convert reference to double.
*/
public static double referenceToDouble(Object obj) {
if (obj instanceof Number) {
return ((Number) obj).doubleValue(); // handles Integer and Double
}
else {
final String className = obj.getClass().getName();
runTimeError(DATA_CONVERSION_ERR, className, Double.TYPE);
return 0;
}
}
/**
* Utility function: used to convert reference to boolean.
*/
public static boolean referenceToBoolean(Object obj) {
if (obj instanceof Boolean) {
return ((Boolean) obj).booleanValue();
}
else {
final String className = obj.getClass().getName();
runTimeError(DATA_CONVERSION_ERR, className, Boolean.TYPE);
return false;
}
}
/**
* Utility function: used to convert reference to String.
*/
public static String referenceToString(Object obj, DOM dom) {
if (obj instanceof String) {
return (String) obj;
}
else if (obj instanceof DTMAxisIterator) {
return dom.getStringValueX(((DTMAxisIterator)obj).reset().next());
}
else if (obj instanceof Node) {
return dom.getStringValueX(((Node)obj).node);
}
else if (obj instanceof DOM) {
return ((DOM) obj).getStringValue();
}
else {
final String className = obj.getClass().getName();
runTimeError(DATA_CONVERSION_ERR, className, String.class);
return null;
}
}
/**
* Utility function used to convert a w3c Node into an internal DOM iterator.
*/
public static DTMAxisIterator node2Iterator(org.w3c.dom.Node node,
Translet translet, DOM dom)
{
final org.w3c.dom.Node inNode = node;
// Create a dummy NodeList which only contains the given node to make
// use of the nodeList2Iterator() interface.
org.w3c.dom.NodeList nodelist = new org.w3c.dom.NodeList() {
public int getLength() {
return 1;
}
public org.w3c.dom.Node item(int index) {
if (index == 0)
return inNode;
else
return null;
}
};
return nodeList2Iterator(nodelist, translet, dom);
}
/**
* In a perfect world, this would be the implementation for
* nodeList2Iterator. In reality, though, this causes a
* ClassCastException in getDTMHandleFromNode because SAXImpl is
* not an instance of DOM2DTM. So we use the more lengthy
* implementation below until this issue has been addressed.
*
* @see org.apache.xml.dtm.ref.DTMManagerDefault#getDTMHandleFromNode
*/
private static DTMAxisIterator nodeList2IteratorUsingHandleFromNode(
org.w3c.dom.NodeList nodeList,
Translet translet, DOM dom)
{
final int n = nodeList.getLength();
final int[] dtmHandles = new int[n];
DTMManager dtmManager = null;
if (dom instanceof MultiDOM)
dtmManager = ((MultiDOM) dom).getDTMManager();
for (int i = 0; i < n; ++i) {
org.w3c.dom.Node node = nodeList.item(i);
int handle;
if (dtmManager != null) {
handle = dtmManager.getDTMHandleFromNode(node);
}
else if (node instanceof DTMNodeProxy
&& ((DTMNodeProxy) node).getDTM() == dom) {
handle = ((DTMNodeProxy) node).getDTMNodeNumber();
}
else {
runTimeError(RUN_TIME_INTERNAL_ERR, "need MultiDOM");
return null;
}
dtmHandles[i] = handle;
System.out.println("Node " + i + " has handle 0x" +
Integer.toString(handle, 16));
}
return new ArrayNodeListIterator(dtmHandles);
}
/**
* Utility function used to convert a w3c NodeList into a internal
* DOM iterator.
*/
public static DTMAxisIterator nodeList2Iterator(
org.w3c.dom.NodeList nodeList,
Translet translet, DOM dom)
{
// First pass: build w3c DOM for all nodes not proxied from our DOM.
//
// Notice: this looses some (esp. parent) context for these nodes,
// so some way to wrap the original nodes inside a DTMAxisIterator
// might be preferable in the long run.
int n = 0; // allow for change in list length, just in case.
Document doc = null;
DTMManager dtmManager = null;
int[] proxyNodes = new int[nodeList.getLength()];
if (dom instanceof MultiDOM)
dtmManager = ((MultiDOM) dom).getDTMManager();
for (int i = 0; i < nodeList.getLength(); ++i) {
org.w3c.dom.Node node = nodeList.item(i);
if (node instanceof DTMNodeProxy) {
DTMNodeProxy proxy = (DTMNodeProxy)node;
DTM nodeDTM = proxy.getDTM();
int handle = proxy.getDTMNodeNumber();
boolean isOurDOM = (nodeDTM == dom);
if (!isOurDOM && dtmManager != null) {
try {
isOurDOM = (nodeDTM == dtmManager.getDTM(handle));
}
catch (ArrayIndexOutOfBoundsException e) {
// invalid node handle, so definitely not our doc
}
}
if (isOurDOM) {
proxyNodes[i] = handle;
++n;
continue;
}
}
proxyNodes[i] = DTM.NULL;
int nodeType = node.getNodeType();
if (doc == null) {
if (dom instanceof MultiDOM == false) {
runTimeError(RUN_TIME_INTERNAL_ERR, "need MultiDOM");
return null;
}
try {
AbstractTranslet at = (AbstractTranslet) translet;
doc = at.newDocument("", "__top__");
}
catch (javax.xml.parsers.ParserConfigurationException e) {
runTimeError(RUN_TIME_INTERNAL_ERR, e.getMessage());
return null;
}
}
// Use one dummy element as container for each node of the
// list. That way, it is easier to detect resp. avoid
// funny things which change the number of nodes,
// e.g. auto-concatenation of text nodes.
Element mid;
switch (nodeType) {
case org.w3c.dom.Node.ELEMENT_NODE:
case org.w3c.dom.Node.TEXT_NODE:
case org.w3c.dom.Node.CDATA_SECTION_NODE:
case org.w3c.dom.Node.COMMENT_NODE:
case org.w3c.dom.Node.ENTITY_REFERENCE_NODE:
case org.w3c.dom.Node.PROCESSING_INSTRUCTION_NODE:
mid = doc.createElementNS(null, "__dummy__");
mid.appendChild(doc.importNode(node, true));
doc.getDocumentElement().appendChild(mid);
++n;
break;
case org.w3c.dom.Node.ATTRIBUTE_NODE:
// The mid element also serves as a container for
// attributes, avoiding problems with conflicting
// attributes or node order.
mid = doc.createElementNS(null, "__dummy__");
mid.setAttributeNodeNS((Attr)doc.importNode(node, true));
doc.getDocumentElement().appendChild(mid);
++n;
break;
default:
// Better play it safe for all types we aren't sure we know
// how to deal with.
runTimeError(RUN_TIME_INTERNAL_ERR,
"Don't know how to convert node type "
+ nodeType);
}
}
// w3cDOM -> DTM -> DOMImpl
DTMAxisIterator iter = null, childIter = null, attrIter = null;
if (doc != null) {
final MultiDOM multiDOM = (MultiDOM) dom;
DOM idom = (DOM)dtmManager.getDTM(new DOMSource(doc), false,
null, true, false);
// Create DOMAdapter and register with MultiDOM
DOMAdapter domAdapter = new DOMAdapter(idom,
translet.getNamesArray(),
translet.getUrisArray(),
translet.getTypesArray(),
translet.getNamespaceArray());
multiDOM.addDOMAdapter(domAdapter);
DTMAxisIterator iter1 = idom.getAxisIterator(Axis.CHILD);
DTMAxisIterator iter2 = idom.getAxisIterator(Axis.CHILD);
iter = new AbsoluteIterator(
new StepIterator(iter1, iter2));
iter.setStartNode(DTMDefaultBase.ROOTNODE);
childIter = idom.getAxisIterator(Axis.CHILD);
attrIter = idom.getAxisIterator(Axis.ATTRIBUTE);
}
// Second pass: find DTM handles for every node in the list.
int[] dtmHandles = new int[n];
n = 0;
for (int i = 0; i < nodeList.getLength(); ++i) {
if (proxyNodes[i] != DTM.NULL) {
dtmHandles[n++] = proxyNodes[i];
continue;
}
org.w3c.dom.Node node = nodeList.item(i);
DTMAxisIterator iter3 = null;
int nodeType = node.getNodeType();
switch (nodeType) {
case org.w3c.dom.Node.ELEMENT_NODE:
case org.w3c.dom.Node.TEXT_NODE:
case org.w3c.dom.Node.CDATA_SECTION_NODE:
case org.w3c.dom.Node.COMMENT_NODE:
case org.w3c.dom.Node.ENTITY_REFERENCE_NODE:
case org.w3c.dom.Node.PROCESSING_INSTRUCTION_NODE:
iter3 = childIter;
break;
case org.w3c.dom.Node.ATTRIBUTE_NODE:
iter3 = attrIter;
break;
default:
// Should not happen, as first run should have got all these
throw new InternalRuntimeError("Mismatched cases");
}
if (iter3 != null) {
iter3.setStartNode(iter.next());
dtmHandles[n] = iter3.next();
// For now, play it self and perform extra checks:
if (dtmHandles[n] == DTMAxisIterator.END)
throw new InternalRuntimeError("Expected element missing at " + i);
if (iter3.next() != DTMAxisIterator.END)
throw new InternalRuntimeError("Too many elements at " + i);
++n;
}
}
if (n != dtmHandles.length)
throw new InternalRuntimeError("Nodes lost in second pass");
return new ArrayNodeListIterator(dtmHandles);
}
/**
* Utility function used to convert references to DOMs.
*/
public static DOM referenceToResultTree(Object obj) {
try {
return ((DOM) obj);
}
catch (IllegalArgumentException e) {
final String className = obj.getClass().getName();
runTimeError(DATA_CONVERSION_ERR, "reference", className);
return null;
}
}
/**
* Utility function: used with nth position filters to convert a sequence
* of nodes to just one single node (the one at position n).
*/
public static DTMAxisIterator getSingleNode(DTMAxisIterator iterator) {
int node = iterator.next();
return(new SingletonIterator(node));
}
/**
* Utility function: used in xsl:copy.
*/
private static char[] _characterArray = new char[32];
public static void copy(Object obj,
SerializationHandler handler,
int node,
DOM dom) {
try {
if (obj instanceof DTMAxisIterator)
{
DTMAxisIterator iter = (DTMAxisIterator) obj;
dom.copy(iter.reset(), handler);
}
else if (obj instanceof Node) {
dom.copy(((Node) obj).node, handler);
}
else if (obj instanceof DOM) {
//((DOM)obj).copy(((com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase)((DOMAdapter)obj).getDOMImpl()).getDocument(), handler);
DOM newDom = (DOM)obj;
newDom.copy(newDom.getDocument(), handler);
}
else {
String string = obj.toString(); // or call stringF()
final int length = string.length();
if (length > _characterArray.length)
_characterArray = new char[length];
string.getChars(0, length, _characterArray, 0);
handler.characters(_characterArray, 0, length);
}
}
catch (SAXException e) {
runTimeError(RUN_TIME_COPY_ERR);
}
}
/**
* Utility function to check if xsl:attribute has a valid qname
* This method should only be invoked if the name attribute is an AVT
*/
public static void checkAttribQName(String name) {
final int firstOccur = name.indexOf(":");
final int lastOccur = name.lastIndexOf(":");
final String localName = name.substring(lastOccur + 1);
if (firstOccur > 0) {
final String newPrefix = name.substring(0, firstOccur);
if (firstOccur != lastOccur) {
final String oriPrefix = name.substring(firstOccur+1, lastOccur);
if (!XML11Char.isXML11ValidNCName(oriPrefix)) {
// even though the orignal prefix is ignored, it should still get checked for valid NCName
runTimeError(INVALID_QNAME_ERR,oriPrefix+":"+localName);
}
}
// prefix must be a valid NCName
if (!XML11Char.isXML11ValidNCName(newPrefix)) {
runTimeError(INVALID_QNAME_ERR,newPrefix+":"+localName);
}
}
// local name must be a valid NCName and must not be XMLNS
if ((!XML11Char.isXML11ValidNCName(localName))||(localName.equals(Constants.XMLNS_PREFIX))) {
runTimeError(INVALID_QNAME_ERR,localName);
}
}
/**
* Utility function to check if a name is a valid ncname
* This method should only be invoked if the attribute value is an AVT
*/
public static void checkNCName(String name) {
if (!XML11Char.isXML11ValidNCName(name)) {
runTimeError(INVALID_NCNAME_ERR,name);
}
}
/**
* Utility function to check if a name is a valid qname
* This method should only be invoked if the attribute value is an AVT
*/
public static void checkQName(String name) {
if (!XML11Char.isXML11ValidQName(name)) {
runTimeError(INVALID_QNAME_ERR,name);
}
}
/**
* Utility function for the implementation of xsl:element.
*/
public static String startXslElement(String qname, String namespace,
SerializationHandler handler, DOM dom, int node)
{
try {
// Get prefix from qname
String prefix;
final int index = qname.indexOf(':');
if (index > 0) {
prefix = qname.substring(0, index);
// Handle case when prefix is not known at compile time
if (namespace == null || namespace.length() == 0) {
try {
// not sure if this line of code ever works
namespace = dom.lookupNamespace(node, prefix);
}
catch(RuntimeException e) {
handler.flushPending(); // need to flush or else can't get namespacemappings
NamespaceMappings nm = handler.getNamespaceMappings();
namespace = nm.lookupNamespace(prefix);
if (namespace == null) {
runTimeError(NAMESPACE_PREFIX_ERR,prefix);
}
}
}
handler.startElement(namespace, qname.substring(index+1),
qname);
handler.namespaceAfterStartElement(prefix, namespace);
}
else {
// Need to generate a prefix?
if (namespace != null && namespace.length() > 0) {
prefix = generatePrefix();
qname = prefix + ':' + qname;
handler.startElement(namespace, qname, qname);
handler.namespaceAfterStartElement(prefix, namespace);
}
else {
handler.startElement(null, null, qname);
}
}
}
catch (SAXException e) {
throw new RuntimeException(e.getMessage());
}
return qname;
}
/**
* This function is used in the execution of xsl:element
*/
public static String getPrefix(String qname) {
final int index = qname.indexOf(':');
return (index > 0) ? qname.substring(0, index) : null;
}
/**
* This function is used in the execution of xsl:element
*/
private static int prefixIndex = 0;
public static String generatePrefix() {
synchronized (BasisLibrary.class) {
return ("ns" + prefixIndex++);
}
}
public static final String RUN_TIME_INTERNAL_ERR =
"RUN_TIME_INTERNAL_ERR";
public static final String RUN_TIME_COPY_ERR =
"RUN_TIME_COPY_ERR";
public static final String DATA_CONVERSION_ERR =
"DATA_CONVERSION_ERR";
public static final String EXTERNAL_FUNC_ERR =
"EXTERNAL_FUNC_ERR";
public static final String EQUALITY_EXPR_ERR =
"EQUALITY_EXPR_ERR";
public static final String INVALID_ARGUMENT_ERR =
"INVALID_ARGUMENT_ERR";
public static final String FORMAT_NUMBER_ERR =
"FORMAT_NUMBER_ERR";
public static final String ITERATOR_CLONE_ERR =
"ITERATOR_CLONE_ERR";
public static final String AXIS_SUPPORT_ERR =
"AXIS_SUPPORT_ERR";
public static final String TYPED_AXIS_SUPPORT_ERR =
"TYPED_AXIS_SUPPORT_ERR";
public static final String STRAY_ATTRIBUTE_ERR =
"STRAY_ATTRIBUTE_ERR";
public static final String STRAY_NAMESPACE_ERR =
"STRAY_NAMESPACE_ERR";
public static final String NAMESPACE_PREFIX_ERR =
"NAMESPACE_PREFIX_ERR";
public static final String DOM_ADAPTER_INIT_ERR =
"DOM_ADAPTER_INIT_ERR";
public static final String PARSER_DTD_SUPPORT_ERR =
"PARSER_DTD_SUPPORT_ERR";
public static final String NAMESPACES_SUPPORT_ERR =
"NAMESPACES_SUPPORT_ERR";
public static final String CANT_RESOLVE_RELATIVE_URI_ERR =
"CANT_RESOLVE_RELATIVE_URI_ERR";
public static final String UNSUPPORTED_XSL_ERR =
"UNSUPPORTED_XSL_ERR";
public static final String UNSUPPORTED_EXT_ERR =
"UNSUPPORTED_EXT_ERR";
public static final String UNKNOWN_TRANSLET_VERSION_ERR =
"UNKNOWN_TRANSLET_VERSION_ERR";
public static final String INVALID_QNAME_ERR = "INVALID_QNAME_ERR";
public static final String INVALID_NCNAME_ERR = "INVALID_NCNAME_ERR";
public static final String UNALLOWED_EXTENSION_FUNCTION_ERR = "UNALLOWED_EXTENSION_FUNCTION_ERR";
public static final String UNALLOWED_EXTENSION_ELEMENT_ERR = "UNALLOWED_EXTENSION_ELEMENT_ERR";
// All error messages are localized and are stored in resource bundles.
private static ResourceBundle m_bundle;
public final static String ERROR_MESSAGES_KEY = "error-messages";
static {
String resource = "com.sun.org.apache.xalan.internal.xsltc.runtime.ErrorMessages";
m_bundle = SecuritySupport.getResourceBundle(resource);
}
/**
* Print a run-time error message.
*/
public static void runTimeError(String code) {
throw new RuntimeException(m_bundle.getString(code));
}
public static void runTimeError(String code, Object[] args) {
final String message = MessageFormat.format(m_bundle.getString(code),
args);
throw new RuntimeException(message);
}
public static void runTimeError(String code, Object arg0) {
runTimeError(code, new Object[]{ arg0 } );
}
public static void runTimeError(String code, Object arg0, Object arg1) {
runTimeError(code, new Object[]{ arg0, arg1 } );
}
public static void consoleOutput(String msg) {
System.out.println(msg);
}
/**
* Replace a certain character in a string with a new substring.
*/
public static String replace(String base, char ch, String str) {
return (base.indexOf(ch) < 0) ? base :
replace(base, String.valueOf(ch), new String[] { str });
}
public static String replace(String base, String delim, String[] str) {
final int len = base.length();
final StringBuilder result = threadLocalStringBuilder.get();
result.setLength(0);
for (int i = 0; i < len; i++) {
final char ch = base.charAt(i);
final int k = delim.indexOf(ch);
if (k >= 0) {
result.append(str[k]);
}
else {
result.append(ch);
}
}
return result.toString();
}
/**
* Utility method to allow setting parameters of the form
* {namespaceuri}localName
* which get mapped to an instance variable in the class
* Hence a parameter of the form "{http://foo.bar}xyz"
* will be replaced with the corresponding values
* by the BasisLibrary's utility method mapQNametoJavaName
* and thus get mapped to legal java variable names
*/
public static String mapQNameToJavaName (String base ) {
return replace(base, ".-:/{}?#%*",
new String[] { "$dot$", "$dash$" ,"$colon$", "$slash$",
"","$colon$","$ques$","$hash$","$per$",
"$aster$"});
}
//-- End utility functions
}
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