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diff --git a/lib/viewers/text.php b/lib/viewers/text.php
index 4963406..718692c 100644
--- a/lib/viewers/text.php
+++ b/lib/viewers/text.php
@@ -1,213 +1,214 @@
<?php
/*
+--------------------------------------------------------------------------+
| This file is part of the Kolab File API |
| |
| Copyright (C) 2011-2013, Kolab Systems AG |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU Affero General Public License as published |
| by the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program 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 Affero General Public License for more details. |
| |
| You should have received a copy of the GNU Affero General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/> |
+--------------------------------------------------------------------------+
| Author: Aleksander Machniak <machniak@kolabsys.com> |
+--------------------------------------------------------------------------+
*/
/**
* Class integrating text editor http://ajaxorg.github.io/ace
*/
class file_viewer_text extends file_viewer
{
/**
* Mimetype to tokenizer map
*
* @var array
*/
protected $mimetypes = array(
'text/plain' => 'text',
'text/html' => 'html',
'text/javascript' => 'javascript',
'text/ecmascript' => 'javascript',
'text/x-c' => 'c_cpp',
'text/css' => 'css',
'text/x-java-source' => 'java',
'text/x-php' => 'php',
'text/x-sh' => 'sh',
'text/xml' => 'xml',
'application/xml' => 'xml',
'application/x-vbscript' => 'vbscript',
'message/rfc822' => 'text',
+ 'application/x-empty' => 'text',
);
/**
* File extension to highligter mode mapping
*
* @var array
*/
protected $extensions = array(
'php' => '/^(php|phpt|inc)$/',
'html' => '/^html?$/',
'css' => '/^css$/',
'xml' => '/^xml$/',
'javascript' => '/^js$/',
'sh' => '/^sh$/',
);
/**
* Returns list of supported mimetype
*
* @return array List of mimetypes
*/
public function supported_mimetypes()
{
// we return only mimetypes not starting with text/
$mimetypes = array();
foreach (array_keys($this->mimetypes) as $type) {
if (strpos($type, 'text/') !== 0) {
$mimetypes[] = $type;
}
}
return $mimetypes;
}
/**
* Check if mimetype is supported by the viewer
*
* @param string $mimetype File type
*
* @return bool
*/
public function supports($mimetype)
{
return $this->mimetypes[$mimetype] || preg_match('/^text\/(?!(pdf|x-pdf))/', $mimetype);
}
/**
* Print file content
*/
protected function print_file($file)
{
$stdout = fopen('php://output', 'w');
stream_filter_register('file_viewer_text', 'file_viewer_content_filter');
stream_filter_append($stdout, 'file_viewer_text');
$this->api->api->file_get($file, array(), $stdout);
}
/**
* Return file viewer URL
*
* @param string $file File name
* @param string $mimetype File type
*/
public function href($file, $mimetype = null)
{
return $this->api->file_url($file) . '&viewer=text';
}
/**
* Print output and exit
*
* @param string $file File name
* @param string $mimetype File type
*/
public function output($file, $mimetype = null)
{
$mode = $this->get_mode($mimetype, $file);
$href = addcslashes($this->api->file_url($file), "'");
echo '<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>Editor</title>
<script src="viewers/text/ace.js" type="text/javascript" charset="utf-8"></script>
<script src="viewers/text/file_editor.js" type="text/javascript" charset="utf-8"></script>
<style>
#editor { top: 0; right: 0; bottom: 0; left: 0; position: absolute; font-size: 14px; padding: 0; margin: 0; }
.ace_search_options { float: right; }
</style>
</head>
<body>
<pre id="editor">';
$this->print_file($file);
echo "</pre>
<script>
var file_editor = new file_editor;
file_editor.init('editor', '$mode', '$href');
</script>
</body>
</html>";
}
protected function get_mode($mimetype, $filename)
{
$mimetype = strtolower($mimetype);
if ($this->mimetypes[$mimetype]) {
return $this->mimetypes[$mimetype];
}
$filename = explode('.', $filename);
$extension = count($filename) > 1 ? array_pop($filename) : null;
if ($extension) {
foreach ($this->extensions as $mode => $regexp) {
if (preg_match($regexp, $extension)) {
return $mode;
}
}
}
return 'text';
}
}
/**
* PHP stream filter to detect escape html special chars in a file
*/
class file_viewer_content_filter extends php_user_filter
{
private $buffer = '';
private $cutoff = 2048;
function onCreate()
{
$this->cutoff = rand(2048, 3027);
return true;
}
function filter($in, $out, &$consumed, $closing)
{
while ($bucket = stream_bucket_make_writeable($in)) {
$bucket->data = htmlspecialchars($bucket->data, ENT_COMPAT | ENT_HTML401 | ENT_IGNORE);
$this->buffer .= $bucket->data;
// keep buffer small enough
if (strlen($this->buffer) > 4096) {
$this->buffer = substr($this->buffer, $this->cutoff);
}
$consumed += $bucket->datalen; // or strlen($bucket->data)?
stream_bucket_append($out, $bucket);
}
return PSFS_PASS_ON;
}
}

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