215 lines
8.3 KiB
C#
215 lines
8.3 KiB
C#
using System;
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using System.Text;
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using System.Globalization;
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/*
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* Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* (the "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the License.
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*
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* The Original Code is 'iText, a free JAVA-PDF library'.
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*
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* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
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* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
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* All Rights Reserved.
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* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
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* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
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*
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* Contributor(s): all the names of the contributors are added in the source code
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* where applicable.
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*
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* Alternatively, the contents of this file may be used under the terms of the
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* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
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* provisions of LGPL are applicable instead of those above. If you wish to
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* allow use of your version of this file only under the terms of the LGPL
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* License and not to allow others to use your version of this file under
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* the MPL, indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by the LGPL.
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* If you do not delete the provisions above, a recipient may use your version
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* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the MPL as stated above or under the terms of the GNU
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* Library General Public License as published by the Free Software Foundation;
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* either version 2 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
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* details.
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*
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* If you didn't download this code from the following link, you should check if
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* you aren't using an obsolete version:
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* http://www.lowagie.com/iText/
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*/
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namespace iTextSharp.text.pdf {
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/**
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* <CODE>PdfDate</CODE> is the PDF date object.
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* <P>
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* PDF defines a standard date format. The PDF date format closely follows the format
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* defined by the international standard ASN.1 (Abstract Syntax Notation One, defined
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* in CCITT X.208 or ISO/IEC 8824). A date is a <CODE>PdfString</CODE> of the form:
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* <P><BLOCKQUOTE>
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* (D:YYYYMMDDHHmmSSOHH'mm')
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* </BLOCKQUOTE><P>
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* This object is described in the 'Portable Document Format Reference Manual version 1.3'
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* section 7.2 (page 183-184)
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*
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* @see PdfString
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* @see java.util.GregorianCalendar
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*/
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public class PdfDate : PdfString {
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// constructors
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/**
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* Constructs a <CODE>PdfDate</CODE>-object.
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*
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* @param d the date that has to be turned into a <CODE>PdfDate</CODE>-object
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*/
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public PdfDate(DateTime d) : base() {
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//d = d.ToUniversalTime();
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value = d.ToString("\\D\\:yyyyMMddHHmmss", DateTimeFormatInfo.InvariantInfo);
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string timezone = d.ToString("zzz", DateTimeFormatInfo.InvariantInfo);
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timezone = timezone.Replace(":", "'");
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value += timezone + "'";
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}
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/**
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* Constructs a <CODE>PdfDate</CODE>-object, representing the current day and time.
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*/
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public PdfDate() : this(DateTime.Now) {}
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/**
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* Adds a number of leading zeros to a given <CODE>string</CODE> in order to get a <CODE>string</CODE>
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* of a certain length.
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*
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* @param i a given number
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* @param length the length of the resulting <CODE>string</CODE>
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* @return the resulting <CODE>string</CODE>
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*/
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private static String SetLength(int i, int length) {
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return i.ToString().PadLeft(length, '0');
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}
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/**
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* Gives the W3C format of the PdfDate.
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* @return a formatted date
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*/
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public String GetW3CDate() {
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return GetW3CDate(value);
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}
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/**
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* Gives the W3C format of the PdfDate.
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* @param d the date in the format D:YYYYMMDDHHmmSSOHH'mm'
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* @return a formatted date
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*/
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public static String GetW3CDate(String d) {
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if (d.StartsWith("D:"))
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d = d.Substring(2);
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StringBuilder sb = new StringBuilder();
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if (d.Length < 4)
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return "0000";
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sb.Append(d.Substring(0, 4)); //year
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d = d.Substring(4);
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if (d.Length < 2)
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return sb.ToString();
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sb.Append('-').Append(d.Substring(0, 2)); //month
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d = d.Substring(2);
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if (d.Length < 2)
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return sb.ToString();
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sb.Append('-').Append(d.Substring(0, 2)); //day
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d = d.Substring(2);
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if (d.Length < 2)
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return sb.ToString();
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sb.Append('T').Append(d.Substring(0, 2)); //hour
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d = d.Substring(2);
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if (d.Length < 2) {
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sb.Append(":00Z");
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return sb.ToString();
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}
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sb.Append(':').Append(d.Substring(0, 2)); //minute
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d = d.Substring(2);
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if (d.Length < 2) {
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sb.Append('Z');
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return sb.ToString();
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}
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sb.Append(':').Append(d.Substring(0, 2)); //second
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d = d.Substring(2);
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if (d.StartsWith("-") || d.StartsWith("+")) {
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String sign = d.Substring(0, 1);
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d = d.Substring(1);
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String h = "00";
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String m = "00";
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if (d.Length >= 2) {
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h = d.Substring(0, 2);
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if (d.Length > 2) {
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d = d.Substring(3);
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if (d.Length >= 2)
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m = d.Substring(0, 2);
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}
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sb.Append(sign).Append(h).Append(':').Append(m);
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return sb.ToString();
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}
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}
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sb.Append('Z');
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return sb.ToString();
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}
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public static DateTime Decode(string date) {
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if (date.StartsWith("D:"))
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date = date.Substring(2);
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int year, month = 1, day = 1, hour = 0, minute = 0, second = 0;
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int offsetHour = 0, offsetMinute = 0;
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char variation = '\0';
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year = int.Parse(date.Substring(0, 4));
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if (date.Length >= 6) {
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month = int.Parse(date.Substring(4, 2));
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if (date.Length >= 8) {
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day = int.Parse(date.Substring(6, 2));
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if (date.Length >= 10) {
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hour = int.Parse(date.Substring(8, 2));
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if (date.Length >= 12) {
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minute = int.Parse(date.Substring(10, 2));
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if (date.Length >= 14) {
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second = int.Parse(date.Substring(12, 2));
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}
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}
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}
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}
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}
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DateTime d = new DateTime(year, month, day, hour, minute, second);
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if (date.Length <= 14)
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return d;
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variation = date[14];
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if (variation == 'Z')
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return d.ToLocalTime();
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if (date.Length >= 17) {
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offsetHour = int.Parse(date.Substring(15, 2));
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if (date.Length >= 20) {
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offsetMinute = int.Parse(date.Substring(18, 2));
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}
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}
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TimeSpan span = new TimeSpan(offsetHour, offsetMinute, 0);
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if (variation == '-')
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d += span;
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else
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d -= span;
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return d.ToLocalTime();
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}
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}
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} |