function perform($config_path) {
/*
todo:
* check ghostscript capabilities of convert
* render formula for test purpose
* check pages of given pdf file
*/
$result = true;
?>
<table>
<tr>
<th>Check</th>
<th>Status</th>
<th>Hint</th>
</tr>
<tr>
<?php
$result = $result && file_exists($config_path);
?>
<td>Configuration present</td>
<td class="<?php echo $result ? 'green' : 'red'; ?>"><?php echo $result ? "Yes":"No"; ?></td>
<td>
<?php if(!$result): ?>
Run <a href="../setup/index.php">setup</a> first.
<?php endif; ?>
</td>
</tr>
<?php if ($result): ?>
<tr>
<?php
include_once($config_path);
$result = (!empty(MediabirdConfig::$pdftk_path) && MediabirdUtility::execExists(MediabirdConfig::$pdftk_path)) || (!empty(MediabirdConfig::$pdfinfo_path) && MediabirdUtility::execExists(MediabirdConfig::$pdfinfo_path));
?>
<td>PdfTk or pdfinfo accessible</td>
<td class="<?php echo $result ? 'green' : 'red'; ?>"><?php echo $result ? "Yes":"No"; ?></td>
<td>
<?php if(!$result): ?>
Install pdftk or pdfinfo. You might have to specify the path to pdftk or pdfinfo in the module options or config file.
<?php endif; ?>
</td>
</tr>
<tr>
<?php
$result = MediabirdUtility::execExists(MediabirdConfig::$latex_path);
?>
<td>LaTeX accessible</td>
<td class="<?php echo $result ? 'green' : 'red'; ?>"><?php echo $result ? "Yes":"No"; ?></td>
<td>
<?php if(!$result): ?>
Install LaTeX and specify the path to the latex executable in the module options or config file.
<?php endif; ?>
</td>
</tr>
<tr>
<?php
$result = MediabirdUtility::execExists(MediabirdConfig::$convert_path);
?>
<td>LaTeX helper DVIPNG accessible</td>
<td class="<?php echo $result ? 'green' : 'red'; ?>"><?php echo $result ? "Yes":"No"; ?></td>
<td>
<?php if(!$result): ?>
Install dvipng and specify the path to the dvipng executable in the module options or config file.
<?php endif; ?>
</td>
</tr>
<tr>
<?php
$result = MediabirdUtility::execExists(MediabirdConfig::$magic_path);
?>
<td>ImageMagick accessible</td>
<td class="<?php echo $result ? 'green' : 'red'; ?>"><?php echo $result ? "Yes":"No"; ?></td>
<td>
<?php if(!$result): ?>
Install ImageMagick and specify the path to the convert executable in the module options or config file.
<?php endif; ?>
</td>
</tr>
<?php endif; ?>
</table><?php
}
/**
* Returns the PDF header info
* @param $filename File name
* @param [$password] Password, optional
* @return object
*/
function getPdfInfo($filename,$password=null) {
$pdfInfoPath = MediabirdConfig::$pdfinfo_path;
$pdfTkPath = MediabirdConfig::$pdftk_path;
if(!file_exists($filename)) {
return null;
}
$encInfo = '';
$info = (object)null;
$info->encrypted = false;
if(!empty($pdfInfoPath) && MediabirdUtility::execExists($pdfInfoPath)) {
if(isset($password) && strlen($password)>0) {
$info->encrypted = true;
$encInfo = "-upw $password";
}
$cmd=sprintf('%s -enc UTF-8 %s %s',escapeshellarg($pdfInfoPath),$encInfo,escapeshellarg($filename));
}
else if(!empty($pdfTkPath) && MediabirdUtility::execExists($pdfTkPath)){
if(isset($password) && strlen($password)>0) {
$info->encrypted = true;
$encInfo = "input_pw $password";
}
$cmd=sprintf('%s %s %s dump_data',escapeshellarg($pdfTkPath),escapeshellarg($filename),$encInfo);
}
else {
return null;
}
$infoCachePath = MediabirdConfig::$cache_folder.md5($cmd);
if(file_exists($infoCachePath) && is_readable($infoCachePath)) {
$contents = file_get_contents($infoCachePath);
$code = strlen($contents)>0 ? 0 : 1;
$output = explode("\n",$contents);
$lastLine = $output[count($output)-1];
}
else {
$lastLine = exec($cmd,$output,$code);
if($code == 0 && empty($lastLine)) {
return null;
}
else {
file_put_contents($infoCachePath,join("\n",$output));
}
}
if($code == 0) {
$info->pageCount = 0;
$info->title = basename($filename);
$nextTitle = false;
foreach($output as $line) {
if(preg_match("/(\w+)\s*\:\s*(.+)\s*$/",$line,$matches)) {
if($matches[1]=="Pages" || $matches[1]=="NumberOfPages") {
$info->pageCount = intval($matches[2]);
}
if($matches[1]=="Title" || $nextTitle) {
$info->title = $matches[2];
}
if($matches[1]=="Encrypted") {
$info->encrypted = strpos($matches[2], "yes") === 0;
}
$nextTitle = $matches[1]=="InfoKey" && $matches[2]=="Title";
}
}
}
else {
$info->encrypted = true;
}
return $info;
}
