pdf.inc

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<?php
Fakoli::using("settings", "auto_login");
 
interface PDFConvertor
{
     function coverPage($url);
     function footer($text, $position = "center", $size = 11);
     function generate();
     function screenshot();
     function preprocessTemplate($template);
};
     
class WkhtmltoPDFConvertor implements PDFConvertor
{
     private $pdf;
     private $footer;
     
     function __construct($pdf)
     {
          $this->pdf = $pdf;
     }
     
     function coverPage($url)
     {
          $this->cover = $url;
          return $this;
     }
     
     function footer($text, $position = "center", $size = 11)
     {
          $this->footer = "--footer-font-size {$size} --footer-{$position} \"{$text}\"";
     }
     
     function generate()
     {
          global $config;
          
          $exe = Settings::getValue("pdf", "wkhtmltopdf_path");
          if (!$exe) throw new FakoliException("Convertor path not specified");
          
          $uri = $this->pdf->uri;
          
          if ($this->pdf->useToken)
          {
               $token = AutoLoginManager::createOneTimeToken($this->pdf->uri);
               $uri = "/action/auto_login/authenticate?token=$token";
          }
          
          $url = "http".($this->pdf->ssl?"s":"")."://".$config["http_host"].$uri;
          
          $flags = "";
          if ($this->pdf->landscape)
          {
               $flags = "-O landscape ";
          }
          
          $tmpName = sha1($url . now()) . ".pdf";
          
          $footer = ($this->footer) ?  $this->footer : "";
          
          $output = $this->pdf->output ? $this->pdf->output : (PdfManager::getTempDirectory() . DIRECTORY_SEPARATOR . $tmpName);
          $cmd = "{$exe} {$footer} {$flags}-q \"{$url}\" {$output}";
          
          trace($cmd, 3);
          
          $out = array();
          
          exec($cmd, $out);
          
          trace(implode("\n", $out), 3);
          
          $content = file_get_contents($output);
          if (!$this->pdf->output) unlink($output);
          
          return $content;
     }
     
     function screenshot()
     {
          return "";
     }
     
     function preProcessTemplate($template)
     {
          return $template;
     }
}
 
class ChromePDFConvertor implements PDFConvertor
{
     private $pdf;
     private $footer;
     
     function __construct($pdf)
     {
          $this->pdf = $pdf;
     }
     
     function coverPage($url)
     {
          $this->cover = $url;
          return $this;
     }
     
     function footer($text, $position = "center", $size = 11)
     {
          $this->footer = "--footer-font-size {$size} --footer-{$position} \"{$text}\"";
     }
     
     function generate()
     {
          global $config;
          
          $exe = Settings::getValue("pdf", "chrome_path");
          
          if (!$exe) throw new FakoliException("Convertor path not specified");
          
          $uri = $this->pdf->uri;
          $uri = appendToQueryString($uri, "__pdfoutput=1");
          if ($this->pdf->landscape)
          {
               $uri = appendToQueryString($uri, "__pdflayout=landscape");
          }
          
          if ($this->pdf->useToken)
          {
               $token = AutoLoginManager::createOneTimeToken($uri);
               $uri = "/action/auto_login/authenticate?token=$token";
          }
          
          $url = "http".($this->pdf->ssl?"s":"")."://".$config["http_host"].$uri;
          
          $flags = "--headless --disable-gpu --no-margins --virtual-time-budget=2000";
          
          $tmpName = sha1($url . now()) . ".pdf";
                    
          $output = $this->pdf->output ? $this->pdf->output : (PdfManager::getTempDirectory() . DIRECTORY_SEPARATOR . $tmpName);
          $cmd = "{$exe} {$flags} \"{$url}\" --print-to-pdf={$output}";
          
          trace($cmd, 3);
          
          $out = array();
          
          exec($cmd, $out);
          
          trace(implode("\n", $out), 3);
          
          $content = file_get_contents($output);
          if (!$this->pdf->output) unlink($output);
          
          return $content;
     }
     
     function screenshot()
     {
          global $config;
          
          $exe = Settings::getValue("pdf", "chrome_screenshot_path");
          
          if (!$exe) throw new FakoliException("Convertor path not specified");
          
          $uri = $this->pdf->uri;
          $uri = appendToQueryString($uri, "__pdfoutput=1");
          if ($this->pdf->landscape)
          {
               $uri = appendToQueryString($uri, "__pdflayout=landscape");
          }
          
          if ($this->pdf->useToken)
          {
               $token = AutoLoginManager::createOneTimeToken($uri);
               $uri = "/action/auto_login/authenticate?token=$token";
          }
          
          $url = "http".($this->pdf->ssl?"s":"")."://".$config["http_host"].$uri;
          
          $flags = "";
          
          $tmpName = sha1($url . now()) . ".png";
          
          $output = $this->pdf->output ? $this->pdf->output : (PdfManager::getTempDirectory() . DIRECTORY_SEPARATOR . $tmpName);
          $cmd = "{$exe} {$flags} \"{$url}\" {$output}";
          
          trace($cmd, 3);
          
          $out = array();
          
          exec($cmd, $out);
          
          trace(implode("\n", $out), 3);
          
          $content = file_get_contents($output);
          if (!$this->pdf->output) unlink($output);
          
          return $content;
     }
     
     function preProcessTemplate($template)
     {
          if (!isset($_GET["__pdfoutput"])) return $template;
          $layout = ($_GET["__pdflayout"] == "landscape") ? " @page { size: landscape; }" : "";
          $styles = "<style type='text/css' media='print'>{$layout} @page {margin:0;} body { margin: 1.5cm }</style></head>";
          
          $template = preg_replace("/<\\/head>/i", $styles, $template);
          return $template;
     }
}
 
class ExternalPDFConvertor
{
     private $pdf;
     private $footer;
     
     function __construct($pdf)
     {
          $this->pdf = $pdf;
     }
     
     function coverPage($url)
     {
          //NOTE: Not available with external processor
          $this->cover = $url;
          return $this;
     }
     
     function footer($text, $position = "center", $size = 11)
     {
          //TODO: Implement support for this
     }
     
     function generate()
     {
          global $config;
          
          $handler = Settings::getValue("pdf", "external_PDF_url");
          if (!$handler)
          {
               $handler = $config["external_pdf_url"];
          }
          
          if (!$handler) throw new FakoliException("External PDF convertor URL not specified");
          
          $uri = $this->pdf->uri;
          $uri = appendToQueryString($uri, "__pdfoutput=1");
          if ($this->pdf->landscape)
          {
               $uri = appendToQueryString($uri, "__pdflayout=landscape");
          }
          
          if ($this->pdf->useToken)
          {
               $token = AutoLoginManager::createOneTimeToken($uri);
               $uri = "/action/auto_login/authenticate?token=$token";
          }
          
          $urlparam = "http".($this->pdf->ssl?"s":"")."://".$config["http_host"].$uri;
          
          $url = $handler."?url=".urlencode($urlparam);
          
          $content = getRemote($url);
          
          if ($this->pdf->output)
          {
               file_put_contents($this->pdf->output, $content);
          }
 
          return $content;
     }
     
     function screenshot()
     {
          global $config;
          
          $handler = Settings::getValue("pdf", "external_PNG_url");
          if (!$handler)
          {
               $handler = $config["external_png_url"];
          }
          
          if (!$handler) throw new FakoliException("External PDF convertor URL not specified");
          
          $uri = $this->pdf->uri;
          $uri = appendToQueryString($uri, "__pdfoutput=1");
          if ($this->pdf->landscape)
          {
               $uri = appendToQueryString($uri, "__pdflayout=landscape");
          }
          
          if ($this->pdf->useToken)
          {
               $token = AutoLoginManager::createOneTimeToken($uri);
               $uri = "/action/auto_login/authenticate?token=$token";
          }
          
          $urlparam = "http".($this->pdf->ssl?"s":"")."://".$config["http_host"].$uri;
          
          $url = $handler."?url=".urlencode($urlparam);
          
          $content = getRemote($url);
          
          if ($this->pdf->output)
          {
               file_put_contents($this->pdf->output, $content);
          }
          
          return $content;
     }
     
     function preProcessTemplate($template)
     {
          if (!isset($_GET["__pdfoutput"])) return $template;
          $layout = ($_GET["__pdflayout"] == "landscape") ? " @page { size: landscape; }" : "";
          $styles = "<style type='text/css' media='print'>{$layout} @page {margin:0;} body { margin: 1.5cm }</style></head>";
          
          $template = preg_replace("/<\\/head>/i", $styles, $template);
          return $template;
     }
}
 
class PDF
{
     var $uri;
     var $ssl;
     var $output;
     var $footer;
     var $landscape = false;
     
     function PDF($uri, $ssl = false, $useToken = true, $output = null, $landscape = false)
     {
          $this->uri = $uri;
          $this->ssl = $ssl;
          $this->useToken = $useToken;
          $this->output = $output;
          $this->landscape = $landscape;
          $this->convertor = PdfManager::createConvertor($this);
     }
 
     
     function coverPage($url)
     {
          $this->convertor->coverPage($url);
     }
     
     function footer($text, $position = "center", $size = 11)
     {
          $this->convertor->footer($text, $position, $size);
     }
     
     function generate()
     {
          return $this->convertor->generate();
     }
}
 
class Screenshot
{
     var $uri;
     var $ssl;
     var $output;
     var $footer;
     var $landscape = false;
     
     function __construct($uri, $ssl = false, $useToken = true, $output = null, $landscape = false)
     {
          $this->uri = $uri;
          $this->ssl = $ssl;
          $this->useToken = $useToken;
          $this->output = $output;
          $this->landscape = $landscape;
          $this->convertor = PdfManager::createConvertor($this);
     }
     
     
     function coverPage($url)
     {
          $this->convertor->coverPage($url);
     }
     
     function footer($text, $position = "center", $size = 11)
     {
          $this->convertor->footer($text, $position, $size);
     }
     
     function generate()
     {
          return $this->convertor->screenshot();
     }
}
?>