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<?php
/**
* DOMPDF - PHP5 HTML to PDF renderer
*
* File: $RCSfile: generated_frame_reflower.cls.php,v $
* Created on: 2004-06-23
*
* Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library in the file LICENSE.LGPL; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*
* Alternatively, you may distribute this software under the terms of the
* PHP License, version 3.0 or later. A copy of this license should have
* been distributed with this file in the file LICENSE.PHP . If this is not
* the case, you can obtain a copy at http://www.php.net/license/3_0.txt.
*
* The latest version of DOMPDF might be available at:
* http://www.digitaljunkies.ca/dompdf
*
* @link http://www.digitaljunkies.ca/dompdf
* @copyright 2004 Benj Carson
* @author Benj Carson <benjcarson@digitaljunkies.ca>
* @package dompdf
* @version 0.5.1
*/
/* $Id: generated_frame_reflower.cls.php,v 1.5 2006/07/07 21:31:03 benjcarson Exp $ */
/**
* Reflows generated content frames (decorates reflower)
*
* @access private
* @package dompdf
*/
class Generated_Frame_Reflower extends Frame_Reflower {
protected $_reflower; // Decoration target
function __construct(Frame $frame) {
parent::__construct($frame);
}
function set_reflower(Frame_Reflower $reflow) {
$this->_reflower = $reflow;
}
//........................................................................
protected function _parse_string($string) {
$string = trim($string, "'\"");
$string = str_replace(array("\\\n",'\\"',"\\'"),
array("",'"',"'"), $string);
// Convert escaped hex characters into ascii characters (e.g. \A => newline)
$string = preg_replace_callback("/\\\\([0-9a-fA-F]{0,6})(\s)?(?(2)|(?=[^0-9a-fA-F]))/",
create_function('$matches',
'return chr(hexdec($matches[1]));'),
$string);
return $string;
}
protected function _parse_content() {
$style = $this->_frame->get_style();
// Matches generated content
$re = "/\n".
"\s(counters?\\([^)]*\\))|\n".
"\A(counters?\\([^)]*\\))|\n".
"\s([\"']) ( (?:[^\"']|\\\\[\"'])+ )(?<!\\\\)\\3|\n".
"\A([\"']) ( (?:[^\"']|\\\\[\"'])+ )(?<!\\\\)\\5|\n" .
"\s([^\s\"']+)|\n" .
"\A([^\s\"']+)\n".
"/xi";
$content = $style->content;
// split on spaces, except within quotes
if (!preg_match_all($re, $content, $matches, PREG_SET_ORDER))
return;
$text = "";
foreach ($matches as $match) {
if ( isset($match[2]) && $match[2] !== "" )
$match[1] = $match[1];
if ( isset($match[6]) && $match[6] !== "" )
$match[4] = $match[6];
if ( isset($match[8]) && $match[8] !== "" )
$match[7] = $match[8];
if ( isset($match[1]) && $match[1] !== "" ) {
// counters?(...)
$match[1] = mb_strtolower(trim($match[1]));
// Handle counter() references:
// http://www.w3.org/TR/CSS21/generate.html#content
$i = mb_strpos($match[1], ")");
if ( $i === false )
continue;
$args = explode(",", mb_substr($match[1], 7, $i - 7));
$counter_id = $args[0];
if ( $match[1]{7} == "(" ) {
// counter(name [,style])
if ( isset($args[1]) )
$type = $args[1];
else
$type = null;
$p = $this->_frame->find_block_parent();
$text .= $p->counter_value($counter_id, $type);
} else if ( $match[1]{7} == "s" ) {
// counters(name, string [,style])
if ( isset($args[1]) )
$string = $this->_parse_string(trim($args[1]));
else
$string = "";
if ( isset($args[2]) )
$type = $args[2];
else
$type = null;
$p = $this->_frame->find_block_parent();
$tmp = "";
while ($p) {
$tmp = $p->counter_value($counter_id, $type) . $string . $tmp;
$p = $p->find_block_parent();
}
$text .= $tmp;
} else
// countertops?
continue;
} else if ( isset($match[4]) && $match[4] !== "" ) {
// String match
$text .= $this->_parse_string($match[4]);
} else if ( isset($match[7]) && $match[7] !== "" ) {
// Directive match
if ( $match[7] === "open-quote" ) {
// FIXME: do something here
} else if ( $match[7] === "close-quote" ) {
// FIXME: do something else here
} else if ( $match[7] === "no-open-quote" ) {
// FIXME:
} else if ( $match[7] === "no-close-quote" ) {
// FIXME:
} else if ( mb_strpos($match[7],"attr(") === 0 ) {
$i = mb_strpos($match[7],")");
if ( $i === false )
continue;
$attr = mb_substr($match[7], 6, $i - 6);
if ( $attr == "" )
continue;
$text .= $this->_frame->get_node()->getAttribute($attr);
} else
continue;
}
}
return $text;
}
function reflow() {
$style = $this->_frame->get_style();
$text = $this->_parse_content();
$t_node = $this->_frame->get_node()->ownerDocument->createTextNode($text);
$t_frame = new Frame($t_node);
$t_style = $style->get_stylesheet()->create_style();
$t_style->inherit($style);
$t_frame->set_style($t_style);
$this->_frame->prepend_child(Frame_Factory::decorate_frame($t_frame));
$this->_reflower->reflow();
}
}
?>
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