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Devin Jankowski
2023-06-21 12:46:23 -04:00
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iTechSharp/iTextSharp/text/html/Markup.cs Normal file
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using System;
using System.util;
using System.IO;
using System.Text;
using System.Collections;
using System.Globalization;
using iTextSharp.text;
/*
* $Id: Markup.cs,v 1.2 2008/05/13 11:25:16 psoares33 Exp $
*
*
* Copyright 2001, 2002 by Bruno Lowagie.
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
namespace iTextSharp.text.html {
/// <summary>
/// A class that contains all the possible tagnames and their attributes.
/// </summary>
public class Markup {
// iText specific
/** the key for any tag */
public const string ITEXT_TAG = "tag";
// HTML tags
/** the markup for the body part of a file */
public const string HTML_TAG_BODY = "body";
/** The DIV tag. */
public const string HTML_TAG_DIV = "div";
/** This is a possible HTML-tag. */
public const string HTML_TAG_LINK = "link";
/** The SPAN tag. */
public const string HTML_TAG_SPAN = "span";
// HTML attributes
/** the height attribute. */
public const string HTML_ATTR_HEIGHT = "height";
/** the hyperlink reference attribute. */
public const string HTML_ATTR_HREF = "href";
/** This is a possible HTML attribute for the LINK tag. */
public const string HTML_ATTR_REL = "rel";
/** This is used for inline css style information */
public const string HTML_ATTR_STYLE = "style";
/** This is a possible HTML attribute for the LINK tag. */
public const string HTML_ATTR_TYPE = "type";
/** This is a possible HTML attribute. */
public const string HTML_ATTR_STYLESHEET = "stylesheet";
/** the width attribute. */
public const string HTML_ATTR_WIDTH = "width";
/** attribute for specifying externally defined CSS class */
public const string HTML_ATTR_CSS_CLASS = "class";
/** The ID attribute. */
public const string HTML_ATTR_CSS_ID = "id";
// HTML values
/** This is a possible value for the language attribute (SCRIPT tag). */
public const string HTML_VALUE_JAVASCRIPT = "text/javascript";
/** This is a possible HTML attribute for the LINK tag. */
public const string HTML_VALUE_CSS = "text/css";
// CSS keys
/** the CSS tag for background color */
public const string CSS_KEY_BGCOLOR = "background-color";
/** the CSS tag for text color */
public const string CSS_KEY_COLOR = "color";
/** CSS key that indicate the way something has to be displayed */
public const string CSS_KEY_DISPLAY = "display";
/** the CSS tag for the font family */
public const string CSS_KEY_FONTFAMILY = "font-family";
/** the CSS tag for the font size */
public const string CSS_KEY_FONTSIZE = "font-size";
/** the CSS tag for the font style */
public const string CSS_KEY_FONTSTYLE = "font-style";
/** the CSS tag for the font weight */
public const string CSS_KEY_FONTWEIGHT = "font-weight";
/** the CSS tag for text decorations */
public const string CSS_KEY_LINEHEIGHT = "line-height";
/** the CSS tag for the margin of an object */
public const string CSS_KEY_MARGIN = "margin";
/** the CSS tag for the margin of an object */
public const string CSS_KEY_MARGINLEFT = "margin-left";
/** the CSS tag for the margin of an object */
public const string CSS_KEY_MARGINRIGHT = "margin-right";
/** the CSS tag for the margin of an object */
public const string CSS_KEY_MARGINTOP = "margin-top";
/** the CSS tag for the margin of an object */
public const string CSS_KEY_MARGINBOTTOM = "margin-bottom";
/** the CSS tag for the margin of an object */
public const String CSS_KEY_PADDING = "padding";
/** the CSS tag for the margin of an object */
public const String CSS_KEY_PADDINGLEFT = "padding-left";
/** the CSS tag for the margin of an object */
public const String CSS_KEY_PADDINGRIGHT = "padding-right";
/** the CSS tag for the margin of an object */
public const String CSS_KEY_PADDINGTOP = "padding-top";
/** the CSS tag for the margin of an object */
public const String CSS_KEY_PADDINGBOTTOM = "padding-bottom";
/** the CSS tag for the margin of an object */
public const String CSS_KEY_BORDERCOLOR = "border-color";
/** the CSS tag for the margin of an object */
public const String CSS_KEY_BORDERWIDTH = "border-width";
/** the CSS tag for the margin of an object */
public const String CSS_KEY_BORDERWIDTHLEFT = "border-left-width";
/** the CSS tag for the margin of an object */
public const String CSS_KEY_BORDERWIDTHRIGHT = "border-right-width";
/** the CSS tag for the margin of an object */
public const String CSS_KEY_BORDERWIDTHTOP = "border-top-width";
/** the CSS tag for the margin of an object */
public const String CSS_KEY_BORDERWIDTHBOTTOM = "border-bottom-width";
/** the CSS tag for adding a page break when the document is printed */
public const string CSS_KEY_PAGE_BREAK_AFTER = "page-break-after";
/** the CSS tag for adding a page break when the document is printed */
public const string CSS_KEY_PAGE_BREAK_BEFORE = "page-break-before";
/** the CSS tag for the horizontal alignment of an object */
public const string CSS_KEY_TEXTALIGN = "text-align";
/** the CSS tag for text decorations */
public const string CSS_KEY_TEXTDECORATION = "text-decoration";
/** the CSS tag for text decorations */
public const string CSS_KEY_VERTICALALIGN = "vertical-align";
/** the CSS tag for the visibility of objects */
public const string CSS_KEY_VISIBILITY = "visibility";
// CSS values
/** value for the CSS tag for adding a page break when the document is printed */
public const string CSS_VALUE_ALWAYS = "always";
/** A possible value for the DISPLAY key */
public const string CSS_VALUE_BLOCK = "block";
/** a CSS value for text font weight */
public const string CSS_VALUE_BOLD = "bold";
/** the value if you want to hide objects. */
public const string CSS_VALUE_HIDDEN = "hidden";
/** A possible value for the DISPLAY key */
public const string CSS_VALUE_INLINE = "inline";
/** a CSS value for text font style */
public const string CSS_VALUE_ITALIC = "italic";
/** a CSS value for text decoration */
public const string CSS_VALUE_LINETHROUGH = "line-through";
/** A possible value for the DISPLAY key */
public const string CSS_VALUE_LISTITEM = "list-item";
/** a CSS value */
public const string CSS_VALUE_NONE = "none";
/** a CSS value */
public const string CSS_VALUE_NORMAL = "normal";
/** a CSS value for text font style */
public const string CSS_VALUE_OBLIQUE = "oblique";
/** A possible value for the DISPLAY key */
public const string CSS_VALUE_TABLE = "table";
/** A possible value for the DISPLAY key */
public const string CSS_VALUE_TABLEROW = "table-row";
/** A possible value for the DISPLAY key */
public const string CSS_VALUE_TABLECELL = "table-cell";
/** the CSS value for a horizontal alignment of an object */
public const string CSS_VALUE_TEXTALIGNLEFT = "left";
/** the CSS value for a horizontal alignment of an object */
public const string CSS_VALUE_TEXTALIGNRIGHT = "right";
/** the CSS value for a horizontal alignment of an object */
public const string CSS_VALUE_TEXTALIGNCENTER = "center";
/** the CSS value for a horizontal alignment of an object */
public const string CSS_VALUE_TEXTALIGNJUSTIFY = "justify";
/** a CSS value for text decoration */
public const string CSS_VALUE_UNDERLINE = "underline";
/// <summary>
/// Parses a length.
/// </summary>
/// <param name="str">a length in the form of an optional + or -, followed by a number and a unit.</param>
/// <returns>a float</returns>
public static float ParseLength(string str) {
int pos = 0;
int length = str.Length;
bool ok = true;
while (ok && pos < length) {
switch (str[pos]) {
case '+':
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case '.':
pos++;
break;
default:
ok = false;
break;
}
}
if (pos == 0) return 0f;
if (pos == length) return float.Parse(str, System.Globalization.NumberFormatInfo.InvariantInfo);
float f = float.Parse(str.Substring(0, pos), System.Globalization.NumberFormatInfo.InvariantInfo);
str = str.Substring(pos);
// inches
if (str.StartsWith("in")) {
return f * 72f;
}
// centimeters
if (str.StartsWith("cm")) {
return (f / 2.54f) * 72f;
}
// millimeters
if (str.StartsWith("mm")) {
return (f / 25.4f) * 72f;
}
// picas
if (str.StartsWith("pc")) {
return f * 12f;
}
// default: we assume the length was measured in points
return f;
}
/// <summary>
/// Converts a <CODE>Color</CODE> into a HTML representation of this <CODE>Color</CODE>.
/// </summary>
/// <param name="color">the <CODE>Color</CODE> that has to be converted.</param>
/// <returns>the HTML representation of this <CODE>Color</CODE></returns>
public static Color DecodeColor(String s) {
if (s == null)
return null;
s = s.ToLower(CultureInfo.InvariantCulture).Trim();
Color c = (Color)WebColors.GetRGBColor(s);
if (c != null)
return c;
try {
if (s.StartsWith("#")) {
if (s.Length == 4)
s = "#" + s.Substring(1, 1) + s.Substring(1, 1)
+ s.Substring(2, 1) + s.Substring(2, 1)
+ s.Substring(3, 1) + s.Substring(3, 1);
if (s.Length == 7)
return new Color(int.Parse(s.Substring(1), NumberStyles.HexNumber));
}
else if (s.StartsWith("rgb")) {
StringTokenizer tk = new StringTokenizer(s.Substring(3), " \t\r\n\f(),");
int[] cc = new int [3];
for (int k = 0; k < 3; ++k) {
if (!tk.HasMoreTokens())
return null;
String t = tk.NextToken();
float n;
if (t.EndsWith("%")) {
n = float.Parse(t.Substring(0, t.Length - 1), System.Globalization.NumberFormatInfo.InvariantInfo);
n = n * 255f / 100f;
}
else
n = float.Parse(t, System.Globalization.NumberFormatInfo.InvariantInfo);
int ni = (int)n;
if (ni > 255)
ni = 255;
else if (ni < 0)
ni = 0;
cc[k] = ni;
}
return new Color(cc[0], cc[1], cc[2]);
}
}
catch {
}
return null;
}
/// <summary>
/// This method parses a string with attributes and returns a Properties object.
/// </summary>
/// <param name="str">a string of this form: 'key1="value1"; key2="value2";... keyN="valueN" '</param>
/// <returns>a Properties object</returns>
public static Properties ParseAttributes(string str) {
Properties result = new Properties();
if (str == null) return result;
StringTokenizer keyValuePairs = new StringTokenizer(str, ";");
StringTokenizer keyValuePair;
string key;
string value;
while (keyValuePairs.HasMoreTokens()) {
keyValuePair = new StringTokenizer(keyValuePairs.NextToken(), ":");
if (keyValuePair.HasMoreTokens()) key = keyValuePair.NextToken().Trim().Trim();
else continue;
if (keyValuePair.HasMoreTokens()) value = keyValuePair.NextToken().Trim();
else continue;
if (value.StartsWith("\"")) value = value.Substring(1);
if (value.EndsWith("\"")) value = value.Substring(0, value.Length - 1);
result.Add(key.ToLower(CultureInfo.InvariantCulture), value);
}
return result;
}
/**
* Removes the comments sections of a String.
*
* @param string
* the original String
* @param startComment
* the String that marks the start of a Comment section
* @param endComment
* the String that marks the end of a Comment section.
* @return the String stripped of its comment section
*/
public static string RemoveComment(String str, String startComment,
String endComment) {
StringBuilder result = new StringBuilder();
int pos = 0;
int end = endComment.Length;
int start = str.IndexOf(startComment, pos);
while (start > -1) {
result.Append(str.Substring(pos, start - pos));
pos = str.IndexOf(endComment, start) + end;
start = str.IndexOf(startComment, pos);
}
result.Append(str.Substring(pos));
return result.ToString();
}
}
}