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