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<?php namespace HashOver;
// Copyright (C) 2010-2018 Jacob Barkdull
// This file is part of HashOver.
//
// HashOver 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.
//
// HashOver 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 HashOver. If not, see <http://www.gnu.org/licenses/>.
// Functions for reading and writing XML files
class ParseXML extends CommentFiles
{
public function __construct (Setup $setup)
{
parent::__construct ($setup);
// Enable XML user error handling
libxml_use_internal_errors (true);
// Throw exception if the XML extension isn't loaded
$setup->extensionsLoaded (array ('xml', 'libxml'));
}
public function query (array $files = array (), $auto = true)
{
// Return array of files
return $this->loadFiles ('xml', $files, $auto);
}
public function read ($file, $thread = 'auto')
{
// Get comment file path
$file = $this->getCommentPath ($file, 'xml', $thread);
// Read XML comment file
$data = @file_get_contents ($file);
// Check for file read error
if ($data !== false) {
// Parse XML comment file
$xml = @simplexml_load_string ($data, 'SimpleXMLElement', LIBXML_COMPACT | LIBXML_NOCDATA);
// Check for XML parse error
if ($xml !== false) {
// Remove first two levels of indentation from comment
$xml->body = preg_replace ('/^\t{0,2}/mS', '', trim ($xml->body, "\r\n\t"));
return (array) $xml;
}
}
return false;
}
public function save ($file, array $contents, $editing = false, $thread = 'auto')
{
// Get comment file path
$file = $this->getCommentPath ($file, 'xml', $thread);
// Return false on attempts to override an existing file
if (file_exists ($file) and $editing === false) {
return false;
}
// Create empty XML DOM document
$dom = new \DOMDocument ('1.0', 'UTF-8');
$dom->preserveWhiteSpace = false;
$dom->formatOutput = true;
// Create root element "comment"
$comment = $dom->createElement ('comment');
// Add comment data to root "comment" element
foreach ($contents as $key => $value) {
$element = $dom->createElement ($key);
if ($key === 'body') {
$new_value = '';
foreach (explode (PHP_EOL, trim ($value, PHP_EOL)) as $line) {
if (!empty ($line)) {
$new_value .= "\t\t";
}
$new_value .= $line . "\n";
}
$value = "\n" . $new_value . "\t";
}
$text_node = $dom->createTextNode ($value);
$element->appendChild ($text_node);
$comment->appendChild ($element);
}
// Append root element "comment"
$dom->appendChild ($comment);
// Replace double spaces with single tab
$tabbed_dom = str_replace (' ', "\t", $dom->saveXML ());
// Convert line endings to OS specific style
$tabbed_dom = $this->osLineEndings ($tabbed_dom);
// Attempt to write file
if (@file_put_contents ($file, $tabbed_dom, LOCK_EX)) {
@chmod ($file, 0600);
return true;
}
return false;
}
public function delete ($file, $hard_unlink = false)
{
// Actually delete the comment file
if ($hard_unlink === true) {
return unlink ($this->getCommentPath ($file, 'xml'));
}
// Read comment file
$xml = $this->read ($file);
// Check for XML parse error
if ($xml !== false) {
// Change status to deleted
$xml['status'] = 'deleted';
// Attempt to save file
if ($this->save ($file, $xml, true)) {
return true;
}
}
return false;
}
}
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