/*******************************************************************************
* Copyright (c) 2012, 2016 Ericsson
*
* All rights reserved. This program and the accompanying materials are
* made available under the terms of the Eclipse Public License v1.0 which
* accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Francois Chouinard - Initial API and implementation
* Marc-Andre Laperle - Add time zone preference
* Patrick Tasse - Updated for negative value formatting and fraction of sec
*******************************************************************************/
package org.eclipse.tracecompass.tmf.core.timestamp;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.TimeZone;
import org.eclipse.jdt.annotation.NonNull;
/**
* A formatting and parsing facility that can handle timestamps that span the
* epoch with a precision down to the nanosecond. It can be understood as an
* extension of SimpleDateFormat that supports seconds since the epoch (Jan 1,
* 1970, 00:00:00 GMT), additional sub-second patterns and optional delimiters.
* <p>
* The timestamp representation is broken down into a number of optional
* components that can be assembled into a fairly simple way.
*
* <h4>Date and Time Patterns</h4>
* All date and time pattern letters defined in {@link SimpleDateFormat} are
* supported with the following exceptions:
* <blockquote>
* <table border=0 cellspacing=3 cellpadding=0 >
* <tr>
* <th align=left>Format
* <th align=left>Description
* <th align=left>Value Range
* <th align=left>Example
* <tr>
* <td><code>T</code>
* <td>The seconds since the epoch
* <td><code>0-9223372036</code>
* <td><code>1332170682</code>
* <tr>
* <td><code>Td</code>
* <td>The deciseconds since the epoch
* <td><code>0-92233720368</code>
* <td><code>13321706825</code>
* <tr>
* <td><code>Tc</code>
* <td>The centiseconds since the epoch
* <td><code>0-922337203685</code>
* <td><code>133217068253</code>
* <tr>
* <td><code>Tm</code>
* <td>The milliseconds since the epoch
* <td><code>0-9223372036854</code>
* <td><code>1332170682539</code>
* <tr>
* <td><code>Tu</code>
* <td>The microseconds since the epoch
* <td><code>0-9223372036854775</code>
* <td><code>1332170682539677</code>
* <tr>
* <td><code>Tn</code>
* <td>The nanoseconds since the epoch
* <td><code>0-9223372036854775807</code>
* <td><code>1332170682539677389</code>
* <tr>
* <td><code>S</code>
* <td>Millisecond
* <td><code>N/A</code>
* <td><code>Not supported</code>
* <tr>
* <td><code>W</code>
* <td>Week in month
* <td><code>N/A</code>
* <td><code>Not supported</code>
* </table>
* </blockquote>
* <p>
* <strong>Note:</strong> When parsing, if "T" is used, no other Date and Time
* pattern letter will be interpreted and the entire pre-delimiter input string
* will be parsed as a number. Also, "T" should be used for time intervals.
* <p>
* <strong>Note:</strong> The decimal separator between the Date and Time
* pattern and the Sub-Seconds pattern is mandatory (if there is a fractional
* part) and must be one of the sub-second delimiters. Date and Time pattern
* letters are not interpreted after the decimal separator.
* <p>
* <h4>Sub-Seconds Patterns</h4>
* <blockquote>
* <table border=0 cellspacing=3 cellpadding=0 >
* <tr>
* <th align=left>Format
* <th align=left>Description
* <th align=left>Value Range
* <th align=left>Example
* <tr>
* <td><code>S</code>
* <td>Fraction of second (or unit of second)
* <td><code>0-999999999</code>
* <td><code>123456789</code>
* <tr>
* <td><code>C</code>
* <td>Microseconds in ms
* <td><code>0-999</code>
* <td><code>456</code>
* <tr>
* <td><code>N</code>
* <td>Nanoseconds in µs
* <td><code>0-999</code>
* <td><code>789</code>
* </table>
* </blockquote>
* <strong>Note:</strong> The fraction of second pattern can be split, in which
* case parsing and formatting continues at the next digit. Digits beyond the
* total number of pattern letters are ignored when parsing and truncated when
* formatting.
* <p>
* <strong>Note:</strong> When parsing, "S", "C" and "N" are interchangeable
* and are all handled as fraction of second ("S"). The use of "C" and "N" is
* discouraged but is supported for backward compatibility.
* <p>
*
* The recognized sub-second delimiters are:
* <ul>
* <li>Space ("<code> </code>")
* <li>Period ("<code>.</code>")
* <li>Comma ("<code>,</code>")
* <li>Dash ("<code>-</code>")
* <li>Underline ("<code>_</code>")
* <li>Colon ("<code>:</code>")
* <li>Semicolon ("<code>;</code>")
* <li>Slash ("<code>/</code>")
* <li>Single-quote ("<code>''</code>")
* <li>Double-quote ("<code>"</code>")
* </ul>
* <p>
* <strong>Note:</strong> When parsing, sub-second delimiters are optional if
* unquoted. However, an extra delimiter or any other unexpected character in
* the input string ends the parsing of digits. All other quoted or unquoted
* characters in the sub-second pattern are matched against the input string.
*
* <h4>Examples</h4>
* The following examples show how timestamp patterns are interpreted in
* the U.S. locale. The given timestamp is 1332170682539677389L, the number
* of nanoseconds since 1970/01/01.
*
* <blockquote>
* <table border=0 cellspacing=3 cellpadding=0>
* <tr>
* <th align=left>Date and Time Pattern
* <th align=left>Result
* <tr>
* <td><code>"yyyy-MM-dd HH:mm:ss.SSS.SSS.SSS"</code>
* <td><code>2012-03-19 11:24:42.539.677.389</code>
* <tr>
* <td><code>"yyyy-MM-dd HH:mm:ss.SSS.SSS"</code>
* <td><code>2012-03-19 11:24:42.539.677</code>
* <tr>
* <td><code>"yyyy-D HH:mm:ss.SSS.SSS"</code>
* <td><code>2012-79 11:24:42.539.677</code>
* <tr>
* <td><code>"ss,SSSS"</code>
* <td><code>42,5397</code>
* <tr>
* <td><code>"T.SSS SSS SSS"</code>
* <td><code>1332170682.539 677 389</code>
* <tr>
* <td><code>"T"</code>
* <td><code>1332170682</code>
* <tr>
* <td><code>"Tm.SSSSSS"</code>
* <td><code>1332170682539.677389</code>
* <tr>
* <td><code>"Tn"</code>
* <td><code>1332170682539677389</code>
* </table>
* </blockquote>
* <p>
* @author Francois Chouinard
*/
public class TmfTimestampFormat extends SimpleDateFormat {
// ------------------------------------------------------------------------
// Constants
// ------------------------------------------------------------------------
/**
* This class' serialization ID
*/
private static final long serialVersionUID = 2835829763122454020L;
/**
* The default timestamp pattern
*/
public static final String DEFAULT_TIME_PATTERN = "HH:mm:ss.SSS SSS SSS"; //$NON-NLS-1$
/**
* The default interval pattern
*/
public static final String DEFAULT_INTERVAL_PATTERN = "TTT.SSS SSS SSS"; //$NON-NLS-1$
// ------------------------------------------------------------------------
// Attributes
// ------------------------------------------------------------------------
// The default timestamp pattern
private static TmfTimestampFormat fDefaultTimeFormat = null;
// The default time interval format
private static TmfTimestampFormat fDefaultIntervalFormat = null;
// The timestamp pattern
private @NonNull String fPattern;
// The index of the decimal separator in the pattern
private int fPatternDecimalSeparatorIndex;
// The decimal separator
private char fDecimalSeparator = '\0';
// The date and time pattern unquoted characters
private String fDateTimePattern;
// The sub-seconds pattern
private String fSubSecPattern;
// The list of supplementary patterns
private List<String> fSupplPatterns = new ArrayList<>();
// The unit of seconds denominator e.g. 10^9 for ns
private long fUnitOfSeconds = 1;
// The locale
private final Locale fLocale;
/**
* The supplementary pattern letters. Can be redefined by sub-classes
* to either override existing letters or augment the letter set.
* If so, the format() method must provide the (re-)implementation of the
* pattern.
*/
protected String fSupplPatternLetters = "TSCN"; //$NON-NLS-1$
/**
* The sub-second pattern letters.
*/
protected String fSubSecPatternChars = "SCN"; //$NON-NLS-1$
/**
* The optional sub-second delimiter characters.
*/
protected String fDelimiterChars = " .,-_:;/'\""; //$NON-NLS-1$
/**
* The map of optional unit of seconds suffix characters that can follow the
* T pattern. The map value is the unit of seconds denominator.
*
* @since 2.0
*/
protected Map<Character, Long> fUnitOfSecondsMap = new HashMap<>();
{
fUnitOfSecondsMap.put('d', 10L);
fUnitOfSecondsMap.put('c', 100L);
fUnitOfSecondsMap.put('m', 1000L);
fUnitOfSecondsMap.put('u', 1000000L);
fUnitOfSecondsMap.put('n', 1000000000L);
}
/*
* The bracketing symbols used to mitigate the risk of a format string
* that contains escaped sequences that would conflict with our format
* extension.
*/
/** The open bracket symbol */
protected String fOpenBracket = "[&"; //$NON-NLS-1$
/** The closing bracket symbol */
protected String fCloseBracket = "&]"; //$NON-NLS-1$
// ------------------------------------------------------------------------
// Constructors
// ------------------------------------------------------------------------
/**
* The default constructor (uses the default pattern)
*/
public TmfTimestampFormat() {
this(TmfTimePreferences.getTimePattern());
}
/**
* The normal constructor
*
* @param pattern the format pattern
*/
public TmfTimestampFormat(@NonNull String pattern) {
fLocale = Locale.getDefault();
fPattern = pattern;
applyPattern(pattern);
}
/**
* The full constructor
*
* @param pattern the format pattern
* @param timeZone the time zone
*/
public TmfTimestampFormat(@NonNull String pattern, TimeZone timeZone) {
fLocale = Locale.getDefault();
setTimeZone(timeZone);
fPattern = pattern;
applyPattern(pattern);
}
/**
* The fuller constructor
*
* @param pattern the format pattern
* @param timeZone the time zone
* @param locale the locale
*/
public TmfTimestampFormat(@NonNull String pattern, TimeZone timeZone, Locale locale) {
super("", locale); //$NON-NLS-1$
fLocale = locale;
setTimeZone(timeZone);
setCalendar(Calendar.getInstance(timeZone, locale));
fPattern = pattern;
applyPattern(pattern);
}
/**
* The copy constructor
*
* @param other the other format pattern
*/
public TmfTimestampFormat(TmfTimestampFormat other) {
this(other.fPattern, other.getTimeZone(), other.fLocale);
}
// ------------------------------------------------------------------------
// Getters/setters
// ------------------------------------------------------------------------
/**
* Update the default time and default interval formats
*/
public static synchronized void updateDefaultFormats() {
fDefaultTimeFormat = new TmfTimestampFormat(
TmfTimePreferences.getTimePattern(),
TmfTimePreferences.getTimeZone(),
TmfTimePreferences.getLocale());
fDefaultIntervalFormat = new TmfTimestampFormat(TmfTimePreferences.getIntervalPattern());
}
/**
* @return the default time format pattern
*/
public static synchronized TmfTimestampFormat getDefaulTimeFormat() {
if (fDefaultTimeFormat == null) {
fDefaultTimeFormat = new TmfTimestampFormat(
TmfTimePreferences.getTimePattern(),
TmfTimePreferences.getTimeZone(),
TmfTimePreferences.getLocale());
}
return fDefaultTimeFormat;
}
/**
* @return the default interval format pattern
*/
public static synchronized TmfTimestampFormat getDefaulIntervalFormat() {
if (fDefaultIntervalFormat == null) {
fDefaultIntervalFormat = new TmfTimestampFormat(TmfTimePreferences.getIntervalPattern());
}
return fDefaultIntervalFormat;
}
@Override
public void applyPattern(String pattern) {
if (pattern == null) {
throw new NullPointerException("TmfTimestampFormat: pattern should not be null"); //$NON-NLS-1$
}
fPattern = pattern;
fPatternDecimalSeparatorIndex = indexOfPatternDecimalSeparator(pattern);
fDateTimePattern = unquotePattern(pattern.substring(0, fPatternDecimalSeparatorIndex));
// Check that 'S' is not present in the date and time pattern
if (fDateTimePattern.indexOf('S') != -1) {
throw new IllegalArgumentException("Illegal pattern character 'S'"); //$NON-NLS-1$
}
// Check that 'W' is not present in the date and time pattern
if (fDateTimePattern.indexOf('W') != -1) {
throw new IllegalArgumentException("Illegal pattern character 'W'"); //$NON-NLS-1$
}
// The super pattern is the date/time pattern, quoted and bracketed
super.applyPattern(quoteSpecificTags(pattern.substring(0, fPatternDecimalSeparatorIndex), true));
// The sub-seconds pattern is bracketed (but not quoted)
fSubSecPattern = quoteSpecificTags(pattern.substring(fPatternDecimalSeparatorIndex), false);
}
@Override
public @NonNull String toPattern() {
return fPattern;
}
// ------------------------------------------------------------------------
// Operations
// ------------------------------------------------------------------------
/**
* Format the timestamp according to its pattern.
*
* @param value the timestamp value to format (in ns)
* @return the formatted timestamp
*/
public synchronized String format(long value) {
// Split the timestamp value into its sub-components
long date = value / 1000000; // milliseconds since January 1, 1970, 00:00:00 GMT
long sec = value / 1000000000; // seconds since January 1, 1970, 00:00:00 GMT
long ms = Math.abs((value % 1000000000) / 1000000); // 0-999 milliseconds
long us = Math.abs((value % 1000000) / 1000); // 0-999 microseconds
long ns = Math.abs(value % 1000); // 0-999 nanoseconds
// Adjust for negative value when formatted as a date
if (value < 0 && ms + us + ns > 0 && !super.toPattern().contains(fOpenBracket + "T")) { //$NON-NLS-1$
date -= 1;
long nanosec = 1000000000 - (1000000 * ms + 1000 * us + ns);
ms = nanosec / 1000000;
us = (nanosec % 1000000) / 1000;
ns = nanosec % 1000;
}
// Let the base class format the date/time pattern
StringBuffer result = new StringBuffer(super.format(date));
// Append the sub-second pattern
result.append(fSubSecPattern);
int fractionDigitsPrinted = 0;
// Fill in our extensions
for (String pattern : fSupplPatterns) {
int length = pattern.length();
long val = 0;
int bufLength = 0;
// Format the proper value as per the pattern
switch (pattern.charAt(0)) {
case 'T':
if (value < 0 && sec == 0) {
result.insert(0, '-');
}
val = sec;
if (fUnitOfSeconds != 1) {
// Avoid multiplication to prevent overflow
val = value / (1000000000 / fUnitOfSeconds);
}
bufLength = Math.min(length, 10);
break;
case 'S':
val = 1000000 * ms + 1000 * us + ns;
if (fUnitOfSeconds != 1) {
val *= fUnitOfSeconds;
val %= 1000000000;
}
bufLength = 9;
break;
case 'C':
val = us;
bufLength = Math.min(length, 3);
break;
case 'N':
val = ns;
bufLength = Math.min(length, 3);
break;
default:
break;
}
// Prepare the format buffer
StringBuffer fmt = new StringBuffer();
for (int i = 0; i < bufLength; i++) {
fmt.append("0"); //$NON-NLS-1$
}
DecimalFormat dfmt = new DecimalFormat(fmt.toString());
String fmtVal = dfmt.format(val);
if (pattern.charAt(0) == 'S') {
fmtVal = fmtVal.substring(fractionDigitsPrinted, Math.min(bufLength, fractionDigitsPrinted + length));
fractionDigitsPrinted += fmtVal.length();
}
// Substitute the placeholder pattern with the formatted value
String ph = new StringBuffer(fOpenBracket + pattern + fCloseBracket).toString();
int loc = result.indexOf(ph);
result.replace(loc, loc + length + fOpenBracket.length() + fCloseBracket.length(), fmtVal);
}
return result.toString();
}
/**
* Parse a string according to the format pattern
*
* @param source the source string
* @param ref the reference (base) time (in ns)
* @return the parsed value (in ns)
* @throws ParseException if the string has an invalid format
*/
public synchronized long parseValue(final String source, final long ref) throws ParseException {
// Trivial case
if (source == null || source.length() == 0) {
return 0;
}
int index = indexOfSourceDecimalSeparator(source);
// Check for seconds in epoch pattern
for (String pattern : fSupplPatterns) {
if (pattern.charAt(0) == 'T') {
long unitsOfSecond = 0;
boolean isNegative = source.charAt(0) == '-';
// Remove everything up to the decimal separator and compute the
// number of seconds since the epoch. If there is no period,
// assume an integer value and return immediately
if (index == 0 || (isNegative && index <= 1)) {
unitsOfSecond = 0;
} else if (index == source.length()) {
return new DecimalFormat("0").parse(source).longValue() * (1000000000 / fUnitOfSeconds); //$NON-NLS-1$
} else {
unitsOfSecond = new DecimalFormat("0").parse(source.substring(0, index)).longValue(); //$NON-NLS-1$
}
long nanos = parseSubSeconds(source.substring(index));
if (isNegative) {
nanos = -nanos;
}
// Compute the value in ns
return unitsOfSecond * (1000000000 / fUnitOfSeconds) + nanos;
}
}
// If there was no "T", parse as a date
long seconds = 0;
if (super.toPattern().length() > 0) {
Date baseDate = super.parse(source.substring(0, index));
getCalendar();
if (ref != Long.MIN_VALUE) {
Calendar baseTime = Calendar.getInstance(getTimeZone(), fLocale);
baseTime.setTimeInMillis(baseDate.getTime());
Calendar newTime = Calendar.getInstance(getTimeZone(), fLocale);
newTime.setTimeInMillis(ref / 1000000);
boolean setRemainingFields = false;
if (dateTimePatternContains("yY")) { //$NON-NLS-1$
newTime.set(Calendar.YEAR, baseTime.get(Calendar.YEAR));
setRemainingFields = true;
}
if (setRemainingFields || dateTimePatternContains("M")) { //$NON-NLS-1$
newTime.set(Calendar.MONTH, baseTime.get(Calendar.MONTH));
setRemainingFields = true;
}
if (setRemainingFields || dateTimePatternContains("d")) { //$NON-NLS-1$
newTime.set(Calendar.DATE, baseTime.get(Calendar.DATE));
setRemainingFields = true;
} else if (dateTimePatternContains("D")) { //$NON-NLS-1$
newTime.set(Calendar.DAY_OF_YEAR, baseTime.get(Calendar.DAY_OF_YEAR));
setRemainingFields = true;
} else if (dateTimePatternContains("w")) { //$NON-NLS-1$
newTime.set(Calendar.WEEK_OF_YEAR, baseTime.get(Calendar.WEEK_OF_YEAR));
setRemainingFields = true;
}
if (dateTimePatternContains("F")) { //$NON-NLS-1$
newTime.set(Calendar.DAY_OF_WEEK_IN_MONTH, baseTime.get(Calendar.DAY_OF_WEEK_IN_MONTH));
setRemainingFields = true;
}
if (dateTimePatternContains("Eu")) { //$NON-NLS-1$
newTime.set(Calendar.DAY_OF_WEEK, baseTime.get(Calendar.DAY_OF_WEEK));
setRemainingFields = true;
}
if (setRemainingFields || dateTimePatternContains("aHkKh")) { //$NON-NLS-1$
newTime.set(Calendar.HOUR_OF_DAY, baseTime.get(Calendar.HOUR_OF_DAY));
setRemainingFields = true;
}
if (setRemainingFields || dateTimePatternContains("m")) { //$NON-NLS-1$
newTime.set(Calendar.MINUTE, baseTime.get(Calendar.MINUTE));
setRemainingFields = true;
}
if (setRemainingFields || dateTimePatternContains("s")) { //$NON-NLS-1$
newTime.set(Calendar.SECOND, baseTime.get(Calendar.SECOND));
}
newTime.set(Calendar.MILLISECOND, 0);
seconds = newTime.getTimeInMillis() / 1000;
} else {
seconds = baseDate.getTime() / 1000;
}
} else if (ref != Long.MIN_VALUE) {
// If the date and time pattern is empty, adjust for reference
seconds = ref / 1000000000;
}
long nanos = parseSubSeconds(source.substring(index));
// Compute the value in ns
return seconds * 1000000000 + nanos;
}
/**
* Parse a string according to the format pattern
*
* @param source the source string
* @return the parsed value (in ns)
* @throws ParseException if the string has an invalid format
*/
public long parseValue(final String source) throws ParseException {
long result = parseValue(source, Long.MIN_VALUE);
return result;
}
// ------------------------------------------------------------------------
// Helper functions
// ------------------------------------------------------------------------
/**
* Finds the index of the decimal separator in the pattern string, which is
* the last delimiter found before the first sub-second pattern character.
* Returns the pattern string length if decimal separator is not found.
*/
private int indexOfPatternDecimalSeparator(String pattern) {
int lastDelimiterIndex = pattern.length();
boolean inQuote = false;
int index = 0;
while (index < pattern.length()) {
char ch = pattern.charAt(index);
if (ch == '\'') {
if (index + 1 < pattern.length()) {
index++;
ch = pattern.charAt(index);
if (ch != '\'') {
inQuote = !inQuote;
}
}
}
if (!inQuote) {
if (fSubSecPatternChars.indexOf(ch) != -1) {
if (lastDelimiterIndex < pattern.length()) {
fDecimalSeparator = pattern.charAt(lastDelimiterIndex);
}
return lastDelimiterIndex;
}
if (fDelimiterChars.indexOf(ch) != -1) {
lastDelimiterIndex = index;
if (ch == '\'') {
lastDelimiterIndex--;
}
}
}
index++;
}
return pattern.length();
}
/**
* Finds the first index of a decimal separator in the source string.
* Skips the number of decimal separators in the format pattern.
* Returns the source string length if decimal separator is not found.
*/
private int indexOfSourceDecimalSeparator(String source) {
String separator = fDecimalSeparator == '\'' ? "''" : String.valueOf(fDecimalSeparator); //$NON-NLS-1$
int patternPos = fPattern.indexOf(separator);
int sourcePos = -1;
while (patternPos != -1 && patternPos <= fPatternDecimalSeparatorIndex) {
sourcePos = source.indexOf(fDecimalSeparator, sourcePos + 1);
if (sourcePos == -1) {
break;
}
// skip optional spaces and tabs before a pattern letter
char p = patternPos < fPattern.length() - 1 ? fPattern.charAt(patternPos + 1) : '\0';
if ((p >= 'a' && p <= 'z') || (p >= 'A' && p <= 'Z')) {
while (sourcePos < source.length() - 1) {
char s = source.charAt(sourcePos + 1);
if (s == ' ' || s == '\t') {
sourcePos++;
} else {
break;
}
}
}
patternPos = fPattern.indexOf(separator, patternPos + separator.length());
}
if (sourcePos == -1) {
sourcePos = source.length();
}
return sourcePos;
}
/**
* Parse the sub-second digits in the input. Handle delimiters as optional
* characters. Match any non-pattern and non-delimiter pattern characters
* against the input. Returns the number of nanoseconds.
*/
private long parseSubSeconds(String input) throws ParseException {
StringBuilder digits = new StringBuilder("000000000"); //$NON-NLS-1$
String pattern = fPattern.substring(fPatternDecimalSeparatorIndex);
boolean inQuote = false;
int digitIndex = 0;
int inputIndex = 0;
int patternIndex = 0;
while (patternIndex < pattern.length()) {
char ch = pattern.charAt(patternIndex);
if (ch == '\'') {
patternIndex++;
if (patternIndex < pattern.length()) {
ch = pattern.charAt(patternIndex);
if (ch != '\'') {
inQuote = !inQuote;
}
} else if (inQuote) {
// final end quote
break;
}
}
if (fDelimiterChars.indexOf(ch) != -1 && !inQuote) {
// delimiter is optional if not in quote
if (inputIndex < input.length() && input.charAt(inputIndex) == ch) {
inputIndex++;
}
patternIndex++;
continue;
} else if (fSubSecPatternChars.indexOf(ch) != -1 && !inQuote) {
// read digit if not in quote
if (inputIndex < input.length() && Character.isDigit(input.charAt(inputIndex))) {
if (digitIndex < digits.length()) {
digits.setCharAt(digitIndex, input.charAt(inputIndex));
digitIndex++;
}
inputIndex++;
} else {
// not a digit, stop parsing digits
digitIndex = digits.length();
}
patternIndex++;
continue;
}
if (inputIndex >= input.length() || input.charAt(inputIndex) != ch) {
throw new ParseException("Unparseable sub-seconds: \"" + input + '\"', inputIndex); //$NON-NLS-1$
}
patternIndex++;
inputIndex++;
}
return Long.parseLong(digits.toString()) / fUnitOfSeconds;
}
/**
* Copy the pattern but quote (bracket with "[&" and "&]") the
* TmfTimestampFormat specific tags. Optionally surround tags with single
* quotes so these fields are treated as comments by the base class.
*
* It also keeps track of the corresponding quoted fields so they can be
* properly populated later on (by format()).
*
* @param pattern
* the 'extended' pattern
* @param includeQuotes
* true to include quotes from pattern and add single quotes
* around tags
* @return the quoted and bracketed pattern
*/
private String quoteSpecificTags(final String pattern, boolean includeQuotes) {
StringBuffer result = new StringBuffer();
int length = pattern.length();
boolean inQuote = false;
for (int i = 0; i < length; i++) {
char c = pattern.charAt(i);
if (c != '\'' || includeQuotes) {
result.append(c);
}
if (c == '\'') {
// '' is treated as a single quote regardless of being
// in a quoted section.
if ((i + 1) < length) {
c = pattern.charAt(i + 1);
if (c == '\'') {
i++;
result.append(c);
continue;
}
}
inQuote = !inQuote;
continue;
}
if (!inQuote && (fSupplPatternLetters.indexOf(c) != -1)) {
if (pattern.charAt(0) == fDecimalSeparator) {
if (fSubSecPatternChars.indexOf(c) == -1) {
// do not quote non-sub-second pattern letters in sub-second pattern
continue;
}
} else {
if (fSubSecPatternChars.indexOf(c) != -1) {
// do not quote sub-second pattern letters in date and time pattern
continue;
}
}
StringBuilder pat = new StringBuilder();
pat.append(c);
if (includeQuotes) {
result.insert(result.length() - 1, "'"); //$NON-NLS-1$
}
result.insert(result.length() - 1, fOpenBracket);
while ((i + 1) < length && pattern.charAt(i + 1) == c) {
result.append(c);
pat.append(c);
i++;
}
if (c == 'T' && (i + 1) < length) {
c = pattern.charAt(i + 1);
Long unitOfSeconds = fUnitOfSecondsMap.get(c);
if (unitOfSeconds != null) {
fUnitOfSeconds = unitOfSeconds;
i++;
}
}
result.append(fCloseBracket);
if (includeQuotes) {
result.append("'"); //$NON-NLS-1$
}
fSupplPatterns.add(pat.toString());
}
}
return result.toString();
}
/**
* Returns the unquoted characters in this pattern.
*/
private static String unquotePattern(String pattern) {
boolean inQuote = false;
int index = 0;
StringBuilder result = new StringBuilder();
while (index < pattern.length()) {
char ch = pattern.charAt(index);
if (ch == '\'') {
if (index + 1 < pattern.length()) {
index++;
ch = pattern.charAt(index);
if (ch != '\'') {
inQuote = !inQuote;
}
}
}
if (!inQuote) {
result.append(ch);
}
index++;
}
return result.toString();
}
/**
* Returns true if the date and time pattern contains any of these chars.
*/
private boolean dateTimePatternContains(String chars) {
int index = 0;
while (index < chars.length()) {
char ch = chars.charAt(index);
if (fDateTimePattern.indexOf(ch) != -1) {
return true;
}
index++;
}
return false;
}
}