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/*
* $Id: Markup.java 3654 2009-01-21 16:11:00Z blowagie $
*
* 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.
*
* Contributions by:
* Lubos Strapko
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* https://github.com/LibrePDF/OpenPDF
*/
package com.lowagie.text.html;
import java.awt.Color;
import java.util.Locale;
import java.util.Properties;
import java.util.StringTokenizer;
/**
* A class that contains all the possible tagnames and their attributes.
*/
public class Markup {
// iText specific
/**
* the key for any tag
*/
public static final String ITEXT_TAG = "tag";
// HTML tags
/**
* the markup for the body part of a file
*/
public static final String HTML_TAG_BODY = "body";
/**
* The DIV tag.
*/
public static final String HTML_TAG_DIV = "div";
/**
* This is a possible HTML-tag.
*/
public static final String HTML_TAG_LINK = "link";
/**
* The SPAN tag.
*/
public static final String HTML_TAG_SPAN = "span";
// HTML attributes
/**
* the height attribute.
*/
public static final String HTML_ATTR_HEIGHT = "height";
/**
* the hyperlink reference attribute.
*/
public static final String HTML_ATTR_HREF = "href";
/**
* This is a possible HTML attribute for the LINK tag.
*/
public static final String HTML_ATTR_REL = "rel";
/**
* This is used for inline css style information
*/
public static final String HTML_ATTR_STYLE = "style";
/**
* This is a possible HTML attribute for the LINK tag.
*/
public static final String HTML_ATTR_TYPE = "type";
/**
* This is a possible HTML attribute.
*/
public static final String HTML_ATTR_STYLESHEET = "stylesheet";
/**
* the width attribute.
*/
public static final String HTML_ATTR_WIDTH = "width";
/**
* attribute for specifying externally defined CSS class
*/
public static final String HTML_ATTR_CSS_CLASS = "class";
/**
* The ID attribute.
*/
public static final String HTML_ATTR_CSS_ID = "id";
// HTML values
/**
* This is a possible value for the language attribute (SCRIPT tag).
*/
public static final String HTML_VALUE_JAVASCRIPT = "text/javascript";
/**
* This is a possible HTML attribute for the LINK tag.
*/
public static final String HTML_VALUE_CSS = "text/css";
// CSS keys
/**
* the CSS tag for background color
*/
public static final String CSS_KEY_BGCOLOR = "background-color";
/**
* the CSS tag for text color
*/
public static final String CSS_KEY_COLOR = "color";
/**
* CSS key that indicate the way something has to be displayed
*/
public static final String CSS_KEY_DISPLAY = "display";
/**
* the CSS tag for the font family
*/
public static final String CSS_KEY_FONTFAMILY = "font-family";
/**
* the CSS tag for the font size
*/
public static final String CSS_KEY_FONTSIZE = "font-size";
/**
* the CSS tag for the font style
*/
public static final String CSS_KEY_FONTSTYLE = "font-style";
/**
* the CSS tag for the font weight
*/
public static final String CSS_KEY_FONTWEIGHT = "font-weight";
/**
* the CSS tag for text decorations
*/
public static final String CSS_KEY_LINEHEIGHT = "line-height";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_MARGIN = "margin";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_MARGINLEFT = "margin-left";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_MARGINRIGHT = "margin-right";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_MARGINTOP = "margin-top";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_MARGINBOTTOM = "margin-bottom";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_PADDING = "padding";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_PADDINGLEFT = "padding-left";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_PADDINGRIGHT = "padding-right";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_PADDINGTOP = "padding-top";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_PADDINGBOTTOM = "padding-bottom";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_BORDERCOLOR = "border-color";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_BORDERWIDTH = "border-width";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_BORDERWIDTHLEFT = "border-left-width";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_BORDERWIDTHRIGHT = "border-right-width";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_BORDERWIDTHTOP = "border-top-width";
/**
* the CSS tag for the margin of an object
*/
public static final String CSS_KEY_BORDERWIDTHBOTTOM = "border-bottom-width";
/**
* the CSS tag for adding a page break when the document is printed
*/
public static final String CSS_KEY_PAGE_BREAK_AFTER = "page-break-after";
/**
* the CSS tag for adding a page break when the document is printed
*/
public static final String CSS_KEY_PAGE_BREAK_BEFORE = "page-break-before";
/**
* the CSS tag for the horizontal alignment of an object
*/
public static final String CSS_KEY_TEXTALIGN = "text-align";
/**
* the CSS tag for text decorations
*/
public static final String CSS_KEY_TEXTDECORATION = "text-decoration";
/**
* the CSS tag for text decorations
*/
public static final String CSS_KEY_VERTICALALIGN = "vertical-align";
/**
* the CSS tag for the visibility of objects
*/
public static final String CSS_KEY_VISIBILITY = "visibility";
// CSS values
/** the CSS tag for background style */
public static final String CSS_KEY_BG = "background";
/**
* value for the CSS tag for adding a page break when the document is printed
*/
public static final String CSS_VALUE_ALWAYS = "always";
/**
* A possible value for the DISPLAY key
*/
public static final String CSS_VALUE_BLOCK = "block";
/**
* a CSS value for text font weight
*/
public static final String CSS_VALUE_BOLD = "bold";
/**
* the value if you want to hide objects.
*/
public static final String CSS_VALUE_HIDDEN = "hidden";
/**
* A possible value for the DISPLAY key
*/
public static final String CSS_VALUE_INLINE = "inline";
/**
* a CSS value for text font style
*/
public static final String CSS_VALUE_ITALIC = "italic";
/**
* a CSS value for text decoration
*/
public static final String CSS_VALUE_LINETHROUGH = "line-through";
/**
* A possible value for the DISPLAY key
*/
public static final String CSS_VALUE_LISTITEM = "list-item";
/**
* a CSS value
*/
public static final String CSS_VALUE_NONE = "none";
/**
* a CSS value
*/
public static final String CSS_VALUE_NORMAL = "normal";
/**
* a CSS value for text font style
*/
public static final String CSS_VALUE_OBLIQUE = "oblique";
/**
* A possible value for the DISPLAY key
*/
public static final String CSS_VALUE_TABLE = "table";
/**
* A possible value for the DISPLAY key
*/
public static final String CSS_VALUE_TABLEROW = "table-row";
/**
* A possible value for the DISPLAY key
*/
public static final String CSS_VALUE_TABLECELL = "table-cell";
/**
* the CSS value for a horizontal alignment of an object
*/
public static final String CSS_VALUE_TEXTALIGNLEFT = "left";
/**
* the CSS value for a horizontal alignment of an object
*/
public static final String CSS_VALUE_TEXTALIGNRIGHT = "right";
/**
* the CSS value for a horizontal alignment of an object
*/
public static final String CSS_VALUE_TEXTALIGNCENTER = "center";
/**
* the CSS value for a horizontal alignment of an object
*/
public static final String CSS_VALUE_TEXTALIGNJUSTIFY = "justify";
/**
* a CSS value for text decoration
*/
public static final String CSS_VALUE_UNDERLINE = "underline";
/**
* a default value for font-size
*
* @since 2.1.3
*/
public static final float DEFAULT_FONT_SIZE = 12f;
/**
* Parses a length.
*
* @param string a length in the form of an optional + or -, followed by a number and a unit.
* @return a float
*/
public static float parseLength(String string) {
int pos = 0;
int length = string.length();
boolean ok = true;
while (ok && pos < length) {
switch (string.charAt(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;
}
}
if (pos == 0) {
return 0f;
}
if (pos == length) {
return Float.parseFloat(string + "f");
}
float f = Float.parseFloat(string.substring(0, pos) + "f");
string = string.substring(pos);
// inches
if (string.startsWith("in")) {
return f * 72f;
}
// centimeters
if (string.startsWith("cm")) {
return (f / 2.54f) * 72f;
}
// millimeters
if (string.startsWith("mm")) {
return (f / 25.4f) * 72f;
}
// picas
if (string.startsWith("pc")) {
return f * 12f;
}
// default: we assume the length was measured in points
return f;
}
/**
* New method contributed by: Lubos Strapko
*
* @param string a length in the form of an optional + or - followed by a number and a unit
* @param actualFontSize font-size
* @return a float number
* @since 2.1.3
*/
public static float parseLength(String string, float actualFontSize) {
if (string == null) {
return 0f;
}
FontSize fs = FontSize.parse(string);// it can be one of the CCS font size names (e.g. 'x-large')
if (fs != null) {
if (fs.isRelative()) {
return fs.getScale() * actualFontSize;
} else {
return fs.getScale() * DEFAULT_FONT_SIZE;
}
}
int pos = 0;
int length = string.length();
boolean ok = true;
while (ok && pos < length) {
switch (string.charAt(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;
}
}
if (pos == 0) {
return 0f;
}
if (pos == length) {
return Float.parseFloat(string + "f");
}
float f = Float.parseFloat(string.substring(0, pos) + "f");
string = string.substring(pos);
// inches
if (string.startsWith("in")) {
return f * 72f;
}
// centimeters
if (string.startsWith("cm")) {
return (f / 2.54f) * 72f;
}
// millimeters
if (string.startsWith("mm")) {
return (f / 25.4f) * 72f;
}
// picas
if (string.startsWith("pc")) {
return f * 12f;
}
// 1em is equal to the current font size
if (string.startsWith("em")) {
return f * actualFontSize;
}
// one ex is the x-height of a font (x-height is usually about half the
// font-size)
if (string.startsWith("ex")) {
return f * actualFontSize / 2;
}
// percentage of current font size
if (string.endsWith("%")) {
return (f / 100) * actualFontSize;
}
// default: we assume the length was measured in points
return f;
}
/**
* Converts a Color into a HTML representation of this Color.
*
* @param color the Color that has to be converted.
* @return the HTML representation of this Color
*/
public static Color decodeColor(String color) {
if (color == null) {
return null;
}
String colorName = color.toLowerCase(Locale.ROOT).trim();
try {
return WebColors.getRGBColor(colorName);
} catch (IllegalArgumentException iae) {
return null;
}
}
/**
* This method parses a String with attributes and returns a Properties object.
*
* @param string a String of this form: 'key1="value1"; key2="value2";... keyN="valueN" '
* @return a Properties object
*/
public static Properties parseAttributes(String string) {
Properties result = new Properties();
if (string == null) {
return result;
}
StringTokenizer keyValuePairs = new StringTokenizer(string, ";");
StringTokenizer keyValuePair;
String key;
String value;
while (keyValuePairs.hasMoreTokens()) {
keyValuePair = new StringTokenizer(keyValuePairs.nextToken(), ":");
if (keyValuePair.hasMoreTokens()) {
key = keyValuePair.nextToken().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.setProperty(key.toLowerCase(Locale.ROOT), 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 string, String startComment,
String endComment) {
StringBuilder result = new StringBuilder();
int pos = 0;
int end = endComment.length();
int start = string.indexOf(startComment, pos);
while (start > -1) {
result.append(string, pos, start);
pos = string.indexOf(endComment, start) + end;
start = string.indexOf(startComment, pos);
}
result.append(string.substring(pos));
return result.toString();
}
}
