werner 2005/05/01 11:21:17
Added: wss4j/src/org/apache/ws/security/util
XmlSchemaDateFormat.java
Log:
New class to process XML Schema compliant timestamps.
Thanks to Ian. P. Springer for the code.
Revision Changes Path
1.1
ws-fx/wss4j/src/org/apache/ws/security/util/XmlSchemaDateFormat.java
Index: XmlSchemaDateFormat.java
===================================================================
/*
* Copyright 2003-2005 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.
*
*/
package org.apache.ws.security.util;
import java.text.DateFormat;
import java.text.FieldPosition;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.text.ParseException;
import java.util.Date;
import java.util.TimeZone;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* A [EMAIL PROTECTED] DateFormat} for the format of the dateTime simpleType
as specified in the
* XML Schema specification. See <a
href="http://www.w3.org/TR/xmlschema-2/#dateTime";>
* XML Schema Part 2: Datatypes, W3C Recommendation 02 May 2001, Section
3.2.7.1</a>.
*
* @author Ian P. Springer
* @author Werner Dittmann
*/
public class XmlSchemaDateFormat extends DateFormat {
/**
* Logger.
*/
private static Log log = LogFactory.getLog(XmlSchemaDateFormat.class);
private static boolean doDebug = false;
static {
doDebug = log.isDebugEnabled();
}
/**
* Message retriever.
*/
// private static final MessageRetriever MSG = ResourceKeys.MSG;
/**
* DateFormat for Zulu (UTC) form of an XML Schema dateTime string.
*/
private static final DateFormat DATEFORMAT_XSD_ZULU = new
SimpleDateFormat(
"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
static {
DATEFORMAT_XSD_ZULU.setTimeZone(TimeZone.getTimeZone("UTC"));
}
/**
* This method was snarfed from
<tt>org.apache.axis.encoding.ser.CalendarDeserializer</tt>,
* which was written by Sam Ruby ([EMAIL PROTECTED]) and Rich Scheuerle
([EMAIL PROTECTED]).
* Better error reporting was added.
*
* @see DateFormat#parse(java.lang.String)
*/
public Date parse(String src, ParsePosition parse_pos) {
Date date;
// validate fixed portion of format
int index = 0;
try {
if (src != null) {
if ((src.charAt(0) == '+') || (src.charAt(0) ==
'-')) {
src = src.substring(1);
}
if (src.length() < 19) {
parse_pos.setIndex(src.length() - 1);
handleParseError(parse_pos,
"TOO_FEW_CHARS");
}
validateChar(src, parse_pos, index = 4, '-',
"EXPECTED_DASH");
validateChar(src, parse_pos, index = 7, '-',
"EXPECTED_DASH");
validateChar(src, parse_pos, index = 10, 'T',
"EXPECTED_CAPITAL_T");
validateChar(src, parse_pos, index = 13, ':',
"EXPECTED_COLON_IN_TIME");
validateChar(src, parse_pos, index = 16, ':',
"EXPECTED_COLON_IN_TIME");
}
// convert what we have validated so far
try {
synchronized (DATEFORMAT_XSD_ZULU) {
date = DATEFORMAT_XSD_ZULU.parse((src
== null) ? null
: (src.substring(0, 19)
+ ".000Z"));
}
} catch (Exception e) {
throw new NumberFormatException(e.toString());
}
index = 19;
// parse optional milliseconds
if (src != null) {
if ((index < src.length()) &&
(src.charAt(index) == '.')) {
int milliseconds = 0;
int start = ++index;
while ((index < src.length())
&&
Character.isDigit(src.charAt(index))) {
index++;
}
String decimal = src.substring(start,
index);
if (decimal.length() == 3) {
milliseconds =
Integer.parseInt(decimal);
} else if (decimal.length() < 3) {
milliseconds =
Integer.parseInt((decimal + "000")
.substring(0,
3));
} else {
milliseconds = Integer
.parseInt(decimal.substring(0, 3));
if (decimal.charAt(3) >= '5') {
++milliseconds;
}
}
// add milliseconds to the current date
date.setTime(date.getTime() +
milliseconds);
}
// parse optional timezone
if (((index + 5) < src.length())
&& ((src.charAt(index) == '+')
|| (src.charAt(index) == '-'))) {
validateCharIsDigit(src, parse_pos,
index + 1, "EXPECTED_NUMERAL");
validateCharIsDigit(src, parse_pos,
index + 2, "EXPECTED_NUMERAL");
validateChar(src, parse_pos, index + 3,
':', "EXPECTED_COLON_IN_TIMEZONE");
validateCharIsDigit(src, parse_pos,
index + 4, "EXPECTED_NUMERAL");
validateCharIsDigit(src, parse_pos,
index + 5, "EXPECTED_NUMERAL");
final int hours = (((src.charAt(index +
1) - '0') * 10) + src
.charAt(index + 2)) -
'0';
final int mins = (((src.charAt(index +
4) - '0') * 10) + src
.charAt(index + 5)) -
'0';
int millisecs = ((hours * 60) + mins) *
60 * 1000;
// subtract millisecs from current date
to obtain GMT
if (src.charAt(index) == '+') {
millisecs = -millisecs;
}
date.setTime(date.getTime() +
millisecs);
index += 6;
}
if ((index < src.length()) &&
(src.charAt(index) == 'Z')) {
index++;
}
if (index < src.length()) {
handleParseError(parse_pos,
"TOO_MANY_CHARS");
}
}
} catch (ParseException pe) {
log.error(pe.toString());
index = 0; // IMPORTANT: this tells DateFormat.parse()
to throw a ParseException
parse_pos.setErrorIndex(index);
date = null;
}
parse_pos.setIndex(index);
return (date);
}
/**
* @see DateFormat#format(java.util.Date)
*/
public StringBuffer format(Date date, StringBuffer append_buf,
FieldPosition field_pos) {
String str;
synchronized (DATEFORMAT_XSD_ZULU) {
str = DATEFORMAT_XSD_ZULU.format(date);
}
if (append_buf == null) {
append_buf = new StringBuffer();
}
append_buf.append(str);
return (append_buf);
}
private void validateChar(String str, ParsePosition parse_pos, int
index,
char expected, String error_reason) throws
ParseException {
if (str.charAt(index) != expected) {
handleParseError(parse_pos, error_reason);
}
}
private void validateCharIsDigit(String str, ParsePosition parse_pos,
int index, String error_reason) throws ParseException {
if (!Character.isDigit(str.charAt(index))) {
handleParseError(parse_pos, error_reason);
}
}
private void handleParseError(ParsePosition parse_pos, String
error_reason)
throws ParseException {
throw new ParseException("INVALID_XSD_DATETIME",
parse_pos.getErrorIndex());
}
}
