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