428 lines
17 KiB
C#
428 lines
17 KiB
C#
using System;
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using System.util;
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using System.IO;
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using System.Text;
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using System.Collections;
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using System.Globalization;
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using iTextSharp.text;
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/*
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* $Id: Markup.cs,v 1.2 2008/05/13 11:25:16 psoares33 Exp $
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*
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*
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* Copyright 2001, 2002 by 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.html {
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/// <summary>
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/// A class that contains all the possible tagnames and their attributes.
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/// </summary>
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public class Markup {
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// iText specific
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/** the key for any tag */
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public const string ITEXT_TAG = "tag";
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// HTML tags
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/** the markup for the body part of a file */
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public const string HTML_TAG_BODY = "body";
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/** The DIV tag. */
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public const string HTML_TAG_DIV = "div";
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/** This is a possible HTML-tag. */
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public const string HTML_TAG_LINK = "link";
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/** The SPAN tag. */
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public const string HTML_TAG_SPAN = "span";
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// HTML attributes
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/** the height attribute. */
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public const string HTML_ATTR_HEIGHT = "height";
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/** the hyperlink reference attribute. */
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public const string HTML_ATTR_HREF = "href";
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/** This is a possible HTML attribute for the LINK tag. */
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public const string HTML_ATTR_REL = "rel";
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/** This is used for inline css style information */
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public const string HTML_ATTR_STYLE = "style";
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/** This is a possible HTML attribute for the LINK tag. */
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public const string HTML_ATTR_TYPE = "type";
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/** This is a possible HTML attribute. */
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public const string HTML_ATTR_STYLESHEET = "stylesheet";
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/** the width attribute. */
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public const string HTML_ATTR_WIDTH = "width";
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/** attribute for specifying externally defined CSS class */
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public const string HTML_ATTR_CSS_CLASS = "class";
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/** The ID attribute. */
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public const string HTML_ATTR_CSS_ID = "id";
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// HTML values
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/** This is a possible value for the language attribute (SCRIPT tag). */
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public const string HTML_VALUE_JAVASCRIPT = "text/javascript";
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/** This is a possible HTML attribute for the LINK tag. */
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public const string HTML_VALUE_CSS = "text/css";
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// CSS keys
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/** the CSS tag for background color */
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public const string CSS_KEY_BGCOLOR = "background-color";
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/** the CSS tag for text color */
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public const string CSS_KEY_COLOR = "color";
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/** CSS key that indicate the way something has to be displayed */
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public const string CSS_KEY_DISPLAY = "display";
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/** the CSS tag for the font family */
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public const string CSS_KEY_FONTFAMILY = "font-family";
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/** the CSS tag for the font size */
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public const string CSS_KEY_FONTSIZE = "font-size";
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/** the CSS tag for the font style */
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public const string CSS_KEY_FONTSTYLE = "font-style";
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/** the CSS tag for the font weight */
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public const string CSS_KEY_FONTWEIGHT = "font-weight";
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/** the CSS tag for text decorations */
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public const string CSS_KEY_LINEHEIGHT = "line-height";
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/** the CSS tag for the margin of an object */
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public const string CSS_KEY_MARGIN = "margin";
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/** the CSS tag for the margin of an object */
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public const string CSS_KEY_MARGINLEFT = "margin-left";
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/** the CSS tag for the margin of an object */
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public const string CSS_KEY_MARGINRIGHT = "margin-right";
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/** the CSS tag for the margin of an object */
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public const string CSS_KEY_MARGINTOP = "margin-top";
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/** the CSS tag for the margin of an object */
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public const string CSS_KEY_MARGINBOTTOM = "margin-bottom";
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/** the CSS tag for the margin of an object */
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public const String CSS_KEY_PADDING = "padding";
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/** the CSS tag for the margin of an object */
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public const String CSS_KEY_PADDINGLEFT = "padding-left";
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/** the CSS tag for the margin of an object */
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public const String CSS_KEY_PADDINGRIGHT = "padding-right";
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/** the CSS tag for the margin of an object */
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public const String CSS_KEY_PADDINGTOP = "padding-top";
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/** the CSS tag for the margin of an object */
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public const String CSS_KEY_PADDINGBOTTOM = "padding-bottom";
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/** the CSS tag for the margin of an object */
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public const String CSS_KEY_BORDERCOLOR = "border-color";
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/** the CSS tag for the margin of an object */
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public const String CSS_KEY_BORDERWIDTH = "border-width";
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/** the CSS tag for the margin of an object */
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public const String CSS_KEY_BORDERWIDTHLEFT = "border-left-width";
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/** the CSS tag for the margin of an object */
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public const String CSS_KEY_BORDERWIDTHRIGHT = "border-right-width";
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/** the CSS tag for the margin of an object */
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public const String CSS_KEY_BORDERWIDTHTOP = "border-top-width";
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/** the CSS tag for the margin of an object */
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public const String CSS_KEY_BORDERWIDTHBOTTOM = "border-bottom-width";
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/** the CSS tag for adding a page break when the document is printed */
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public const string CSS_KEY_PAGE_BREAK_AFTER = "page-break-after";
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/** the CSS tag for adding a page break when the document is printed */
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public const string CSS_KEY_PAGE_BREAK_BEFORE = "page-break-before";
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/** the CSS tag for the horizontal alignment of an object */
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public const string CSS_KEY_TEXTALIGN = "text-align";
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/** the CSS tag for text decorations */
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public const string CSS_KEY_TEXTDECORATION = "text-decoration";
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/** the CSS tag for text decorations */
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public const string CSS_KEY_VERTICALALIGN = "vertical-align";
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/** the CSS tag for the visibility of objects */
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public const string CSS_KEY_VISIBILITY = "visibility";
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// CSS values
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/** value for the CSS tag for adding a page break when the document is printed */
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public const string CSS_VALUE_ALWAYS = "always";
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/** A possible value for the DISPLAY key */
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public const string CSS_VALUE_BLOCK = "block";
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/** a CSS value for text font weight */
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public const string CSS_VALUE_BOLD = "bold";
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/** the value if you want to hide objects. */
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public const string CSS_VALUE_HIDDEN = "hidden";
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/** A possible value for the DISPLAY key */
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public const string CSS_VALUE_INLINE = "inline";
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/** a CSS value for text font style */
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public const string CSS_VALUE_ITALIC = "italic";
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/** a CSS value for text decoration */
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public const string CSS_VALUE_LINETHROUGH = "line-through";
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/** A possible value for the DISPLAY key */
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public const string CSS_VALUE_LISTITEM = "list-item";
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/** a CSS value */
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public const string CSS_VALUE_NONE = "none";
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/** a CSS value */
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public const string CSS_VALUE_NORMAL = "normal";
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/** a CSS value for text font style */
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public const string CSS_VALUE_OBLIQUE = "oblique";
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/** A possible value for the DISPLAY key */
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public const string CSS_VALUE_TABLE = "table";
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/** A possible value for the DISPLAY key */
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public const string CSS_VALUE_TABLEROW = "table-row";
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/** A possible value for the DISPLAY key */
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public const string CSS_VALUE_TABLECELL = "table-cell";
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/** the CSS value for a horizontal alignment of an object */
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public const string CSS_VALUE_TEXTALIGNLEFT = "left";
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/** the CSS value for a horizontal alignment of an object */
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public const string CSS_VALUE_TEXTALIGNRIGHT = "right";
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/** the CSS value for a horizontal alignment of an object */
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public const string CSS_VALUE_TEXTALIGNCENTER = "center";
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/** the CSS value for a horizontal alignment of an object */
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public const string CSS_VALUE_TEXTALIGNJUSTIFY = "justify";
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/** a CSS value for text decoration */
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public const string CSS_VALUE_UNDERLINE = "underline";
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/// <summary>
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/// Parses a length.
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/// </summary>
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/// <param name="str">a length in the form of an optional + or -, followed by a number and a unit.</param>
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/// <returns>a float</returns>
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public static float ParseLength(string str) {
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int pos = 0;
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int length = str.Length;
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bool ok = true;
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while (ok && pos < length) {
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switch (str[pos]) {
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case '+':
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case '-':
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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case '8':
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case '9':
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case '.':
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pos++;
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break;
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default:
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ok = false;
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break;
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}
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}
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if (pos == 0) return 0f;
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if (pos == length) return float.Parse(str, System.Globalization.NumberFormatInfo.InvariantInfo);
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float f = float.Parse(str.Substring(0, pos), System.Globalization.NumberFormatInfo.InvariantInfo);
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str = str.Substring(pos);
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// inches
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if (str.StartsWith("in")) {
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return f * 72f;
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}
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// centimeters
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if (str.StartsWith("cm")) {
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return (f / 2.54f) * 72f;
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}
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// millimeters
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if (str.StartsWith("mm")) {
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return (f / 25.4f) * 72f;
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}
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// picas
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if (str.StartsWith("pc")) {
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return f * 12f;
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}
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// default: we assume the length was measured in points
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return f;
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}
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/// <summary>
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/// Converts a <CODE>Color</CODE> into a HTML representation of this <CODE>Color</CODE>.
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/// </summary>
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/// <param name="color">the <CODE>Color</CODE> that has to be converted.</param>
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/// <returns>the HTML representation of this <CODE>Color</CODE></returns>
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public static Color DecodeColor(String s) {
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if (s == null)
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return null;
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s = s.ToLower(CultureInfo.InvariantCulture).Trim();
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Color c = (Color)WebColors.GetRGBColor(s);
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if (c != null)
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return c;
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try {
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if (s.StartsWith("#")) {
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if (s.Length == 4)
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s = "#" + s.Substring(1, 1) + s.Substring(1, 1)
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+ s.Substring(2, 1) + s.Substring(2, 1)
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+ s.Substring(3, 1) + s.Substring(3, 1);
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if (s.Length == 7)
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return new Color(int.Parse(s.Substring(1), NumberStyles.HexNumber));
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}
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else if (s.StartsWith("rgb")) {
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StringTokenizer tk = new StringTokenizer(s.Substring(3), " \t\r\n\f(),");
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int[] cc = new int [3];
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for (int k = 0; k < 3; ++k) {
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if (!tk.HasMoreTokens())
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return null;
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String t = tk.NextToken();
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float n;
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if (t.EndsWith("%")) {
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n = float.Parse(t.Substring(0, t.Length - 1), System.Globalization.NumberFormatInfo.InvariantInfo);
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n = n * 255f / 100f;
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}
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else
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n = float.Parse(t, System.Globalization.NumberFormatInfo.InvariantInfo);
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int ni = (int)n;
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if (ni > 255)
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ni = 255;
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else if (ni < 0)
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ni = 0;
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cc[k] = ni;
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}
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return new Color(cc[0], cc[1], cc[2]);
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}
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}
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catch {
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}
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return null;
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}
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/// <summary>
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/// This method parses a string with attributes and returns a Properties object.
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/// </summary>
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/// <param name="str">a string of this form: 'key1="value1"; key2="value2";... keyN="valueN" '</param>
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/// <returns>a Properties object</returns>
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public static Properties ParseAttributes(string str) {
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Properties result = new Properties();
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if (str == null) return result;
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StringTokenizer keyValuePairs = new StringTokenizer(str, ";");
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StringTokenizer keyValuePair;
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string key;
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string value;
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while (keyValuePairs.HasMoreTokens()) {
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keyValuePair = new StringTokenizer(keyValuePairs.NextToken(), ":");
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if (keyValuePair.HasMoreTokens()) key = keyValuePair.NextToken().Trim().Trim();
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else continue;
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if (keyValuePair.HasMoreTokens()) value = keyValuePair.NextToken().Trim();
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else continue;
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if (value.StartsWith("\"")) value = value.Substring(1);
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if (value.EndsWith("\"")) value = value.Substring(0, value.Length - 1);
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result.Add(key.ToLower(CultureInfo.InvariantCulture), value);
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}
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return result;
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}
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/**
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* Removes the comments sections of a String.
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*
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* @param string
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* the original String
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* @param startComment
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* the String that marks the start of a Comment section
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* @param endComment
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* the String that marks the end of a Comment section.
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* @return the String stripped of its comment section
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*/
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public static string RemoveComment(String str, String startComment,
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String endComment) {
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StringBuilder result = new StringBuilder();
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int pos = 0;
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int end = endComment.Length;
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int start = str.IndexOf(startComment, pos);
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while (start > -1) {
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result.Append(str.Substring(pos, start - pos));
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pos = str.IndexOf(endComment, start) + end;
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start = str.IndexOf(startComment, pos);
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}
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result.Append(str.Substring(pos));
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return result.ToString();
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}
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}
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}
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