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<?php
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/*
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+-----------------------------------------------------------------------+
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| program/include/rcube_html_page.php |
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| This file is part of the Roundcube PHP suite |
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| Copyright (C) 2005-2011 The Roundcube Dev Team |
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| Licensed under the GNU GPL |
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| CONTENTS: |
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| Class to build XHTML page output |
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+-----------------------------------------------------------------------+
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| Author: Thomas Bruederli <roundcube@gmail.com> |
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+-----------------------------------------------------------------------+
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$Id$
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*/
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/**
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* Class for HTML page creation
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*
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* @package HTML
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*/
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class rcube_html_page
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{
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protected $scripts_path = '';
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protected $script_files = array();
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protected $css_files = array();
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protected $scripts = array();
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protected $charset = RCMAIL_CHARSET;
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protected $default_template = "<html>\n<head><title></title></head>\n<body></body>\n</html>";
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protected $title = '';
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protected $header = '';
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protected $footer = '';
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protected $body = '';
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protected $base_path = '';
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/** Constructor */
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public function __construct() {}
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/**
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* Link an external script file
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*
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* @param string File URL
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* @param string Target position [head|foot]
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*/
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public function include_script($file, $position='head')
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{
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static $sa_files = array();
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if (!preg_match('|^https?://|i', $file) && $file[0] != '/')
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$file = $this->scripts_path . $file . (($fs = @filemtime($this->scripts_path . $file)) ? '?s='.$fs : '');
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if (in_array($file, $sa_files)) {
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return;
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}
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$sa_files[] = $file;
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if (!is_array($this->script_files[$position])) {
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$this->script_files[$position] = array();
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}
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$this->script_files[$position][] = $file;
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}
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/**
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* Add inline javascript code
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*
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* @param string JS code snippet
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* @param string Target position [head|head_top|foot]
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*/
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public function add_script($script, $position='head')
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{
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if (!isset($this->scripts[$position])) {
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$this->scripts[$position] = "\n".rtrim($script);
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} else {
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$this->scripts[$position] .= "\n".rtrim($script);
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}
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}
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/**
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* Link an external css file
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*
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* @param string File URL
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*/
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public function include_css($file)
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{
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$this->css_files[] = $file;
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}
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/**
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* Add HTML code to the page header
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*
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* @param string $str HTML code
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*/
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public function add_header($str)
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{
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$this->header .= "\n".$str;
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}
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/**
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* Add HTML code to the page footer
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* To be added right befor </body>
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*
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* @param string $str HTML code
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*/
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public function add_footer($str)
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{
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$this->footer .= "\n".$str;
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}
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/**
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* Setter for page title
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*
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* @param string $t Page title
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*/
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public function set_title($t)
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{
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$this->title = $t;
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}
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/**
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* Setter for output charset.
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* To be specified in a meta tag and sent as http-header
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*
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* @param string $charset Charset
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*/
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public function set_charset($charset)
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{
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$this->charset = $charset;
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}
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/**
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* Getter for output charset
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*
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* @return string Output charset
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*/
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public function get_charset()
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{
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return $this->charset;
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}
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/**
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* Reset all saved properties
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*/
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public function reset()
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{
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$this->script_files = array();
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$this->scripts = array();
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$this->title = '';
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$this->header = '';
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$this->footer = '';
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$this->body = '';
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}
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/**
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* Process template and write to stdOut
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*
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* @param string HTML template
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* @param string Base for absolute paths
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*/
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public function write($templ='', $base_path='')
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{
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$output = empty($templ) ? $this->default_template : trim($templ);
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// set default page title
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if (empty($this->title)) {
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$this->title = 'Roundcube Mail';
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}
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// replace specialchars in content
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$page_title = Q($this->title, 'show', FALSE);
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$page_header = '';
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$page_footer = '';
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// include meta tag with charset
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if (!empty($this->charset)) {
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if (!headers_sent()) {
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header('Content-Type: text/html; charset=' . $this->charset);
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}
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$page_header = '<meta http-equiv="content-type"';
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$page_header.= ' content="text/html; charset=';
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$page_header.= $this->charset . '" />'."\n";
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}
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// definition of the code to be placed in the document header and footer
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if (is_array($this->script_files['head'])) {
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foreach ($this->script_files['head'] as $file) {
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$page_header .= html::script($file);
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}
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}
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$head_script = $this->scripts['head_top'] . $this->scripts['head'];
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if (!empty($head_script)) {
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$page_header .= html::script(array(), $head_script);
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}
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if (!empty($this->header)) {
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$page_header .= $this->header;
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}
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// put docready commands into page footer
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if (!empty($this->scripts['docready'])) {
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$this->add_script('$(document).ready(function(){ ' . $this->scripts['docready'] . "\n});", 'foot');
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}
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if (is_array($this->script_files['foot'])) {
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foreach ($this->script_files['foot'] as $file) {
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$page_footer .= html::script($file);
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}
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}
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if (!empty($this->footer)) {
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$page_footer .= $this->footer . "\n";
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}
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if (!empty($this->scripts['foot'])) {
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$page_footer .= html::script(array(), $this->scripts['foot']);
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}
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// find page header
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if ($hpos = stripos($output, '</head>')) {
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$page_header .= "\n";
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}
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else {
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if (!is_numeric($hpos)) {
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$hpos = stripos($output, '<body');
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}
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if (!is_numeric($hpos) && ($hpos = stripos($output, '<html'))) {
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while ($output[$hpos] != '>') {
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$hpos++;
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}
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$hpos++;
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}
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$page_header = "<head>\n<title>$page_title</title>\n$page_header\n</head>\n";
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}
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// add page hader
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if ($hpos) {
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$output = substr_replace($output, $page_header, $hpos, 0);
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}
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else {
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$output = $page_header . $output;
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}
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// add page footer
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if (($fpos = strripos($output, '</body>')) || ($fpos = strripos($output, '</html>'))) {
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$output = substr_replace($output, $page_footer."\n", $fpos, 0);
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}
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else {
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$output .= "\n".$page_footer;
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}
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// add css files in head, before scripts, for speed up with parallel downloads
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if (!empty($this->css_files) &&
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(($pos = stripos($output, '<script ')) || ($pos = stripos($output, '</head>')))
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) {
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$css = '';
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foreach ($this->css_files as $file) {
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$css .= html::tag('link', array('rel' => 'stylesheet', 'type' => 'text/css', 'href' => $file, 'nl' => true));
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}
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$output = substr_replace($output, $css, $pos, 0);
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}
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$this->base_path = $base_path;
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// correct absolute paths in images and other tags
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// add timestamp to .js and .css filename
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$output = preg_replace_callback(
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'!(src|href|background)=(["\']?)([a-z0-9/_.-]+)(["\'\s>])!i',
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array($this, 'file_callback'), $output);
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$output = str_replace('$__skin_path', $base_path, $output);
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// trigger hook with final HTML content to be sent
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$hook = rcmail::get_instance()->plugins->exec_hook("send_page", array('content' => $output));
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if (!$hook['abort']) {
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if ($this->charset != RCMAIL_CHARSET)
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echo rcube_charset_convert($hook['content'], RCMAIL_CHARSET, $this->charset);
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else
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echo $hook['content'];
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}
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}
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/**
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* Callback function for preg_replace_callback in write()
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*
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* @return string Parsed string
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*/
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private function file_callback($matches)
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{
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$file = $matches[3];
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// correct absolute paths
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if ($file[0] == '/')
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$file = $this->base_path . $file;
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// add file modification timestamp
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if (preg_match('/\.(js|css)$/', $file))
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$file .= '?s=' . @filemtime($file);
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return sprintf("%s=%s%s%s", $matches[1], $matches[2], $file, $matches[4]);
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}
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}
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