Added Library for document conversion and merging

Added function for loading documents of Akte
2026-07-23 01:42:17 +00:00 · 2017-11-28 14:08:29 +01:00
parent a4a9bcda46
commit 6c62196acb
2 changed files with 261 additions and 26 deletions
@@ -0,0 +1,182 @@
+<?php
+
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+class DocumentLib
+{
+	private $unoconv_version;
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		// Gets CI instance
+		$this->ci =& get_instance();
+
+		exec('unoconv --version', $ret_arr);
+		if(isset($ret_arr[0]))
+			$this->unoconv_version = explode(' ', $ret_arr[0])[1];
+		else
+			show_error('Unoconv not found - Please install Unoconv');
+	}
+
+	/**
+	 * Converts a File to PDF
+	 * @param string $filename Full path to the file.
+	 * @return success or error object
+	 */
+	public function convertToPDF($filename)
+	{
+		if (!file_exists($filename))
+			return error('Unable to Convert to PDF. File not found:'.$filename);
+
+		$mimetype = mime_content_type($filename);
+		$outFile = sys_get_temp_dir().'/FHC_'.uniqid().'.pdf';
+
+		switch ($mimetype)
+		{
+			case 'image/jpeg':
+			case 'image/jpg':
+			case 'image/pjpeg':
+				$this->_jpegtopdf($filename, $outFile);
+				return success($outFile);
+			case 'application/vnd.oasis.opendocument.spreadsheet':
+			case 'application/msword':
+			case 'application/vnd.openxmlformats-officedocument.wordprocessingml.document':
+			case 'application/haansoftdocx':
+			case 'application/vnd.ms-word':
+			case 'application/vnd.oasis.opendocument.text':
+			case 'text/plain':
+				$this->convert($filename, $outFile, 'pdf');
+				return success($outFile);
+			case 'application/pdf':
+				return success($filename);
+			default:
+				return error('Unknown Mimetype:'.$mimetype);
+		}
+	}
+
+	/**
+	 * Combines multiple single PDFs to one PDF
+	 *
+	 * @param array $files Array of Files to merge (full path to file).
+	 * @param string $outFile Path to the Output File.
+	 * @return success or error object
+	 */
+	public function mergePDF($files, $outFile)
+	{
+		$cmd = "gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=$outFile ";
+		$finfo = finfo_open(FILEINFO_MIME_TYPE);
+
+		// add all pdf files to the command
+		foreach ($files as $f)
+		{
+			$cmd .= $f." ";
+			if (!file_exists($f))
+			{
+				return error("File not found: '$f'");
+			}
+			if (finfo_file($finfo, $f) != "application/pdf")
+			{
+				return error("Wrong format(".finfo_file($finfo, $f)."): '$f'");
+			}
+		}
+
+		finfo_close($finfo);
+
+		exec($cmd, $out, $ret);
+		if ($ret != 0)
+		{
+			return error('PDF-zusammenfuegung ist derzeit nicht möglich. Bitte informieren Sie den Administrator');
+		}
+		return success(true);
+	}
+
+	/**
+	 * Converts a Document to another format with unoconv
+	 *
+	 * @param string $inFile File that should be convertet.
+	 * @param string $outFile Name of the Output File.
+	 * @param string $format Outputformat (PDF, DOC, ...).
+	 * @return success or error Object
+	 */
+	public function convert($inFile, $outFile, $format)
+	{
+		if ($this->unoconv_version == '0.6')
+			$command = 'unoconv -f %1$s  %3$s > %2$s';
+		else
+			$command = 'unoconv -f %s --output %s %s 2>&1';
+		$command = sprintf($command, $format, $outFile, $inFile);
+
+		exec($command, $out, $ret);
+
+		if ($ret != 0)
+		{
+			return error('Dokumentenkonvertierung ist derzeit nicht möglich. Bitte informieren Sie den Administrator');
+		}
+
+		return success(true);
+	}
+
+	/**
+	 * Converts a JPG to PDF
+	 *
+	 * @param string $filename Path to JPG.
+	 * @param string $outfile Path to Output (pdf) File.
+	 * @return success or error object
+	 */
+	private function _jpegtopdf($filename, $outfile)
+	{
+		if (!file_exists($filename))
+			return error('File does not exists');
+
+		$size = getimagesize($filename);
+
+		$margin_left_right = 18;
+		$margin_bottom = 18;
+
+		/*
+		 * längere Seite ermitteln
+		 * Hochformat wenn die Seiten gleich lang sind oder das Bild schmäler ist als die Seitenbreite
+		 */
+		if ($size[0] > $size[1] && $size[0] > 595)
+		{
+			$page_height = 595;
+			$page_width = 842;
+			//Wenn Bild kleiner oder gleich Seitenbreite, dann margin erhoehen
+			if ($size[0] <= $page_width)
+			{
+				$margin_left_right = ($page_width - $size[0]) / 2;
+				$margin_bottom = ($page_height - $size[1]);
+			}
+		}
+		else
+		{
+			$page_height = 842;
+			$page_width = 595;
+			//Wenn Bild kleiner oder gleich Seitenbreite, dann margin erhoehen
+			if ($size[0] <= $page_width)
+			{
+				$margin_left_right = ($page_width - $size[0]) / 2;
+				$margin_bottom = ($page_height - $size[1]);
+			}
+		}
+
+		// -r300 = 300 ppi
+		$cmd = 'gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -r100 ';
+		$cmd .= '-o '.$outfile.' viewjpeg.ps -c "('.$filename.') ';
+		$cmd .= '<< /PageSize ['.$page_width.' '.$page_height.'] ';
+		$cmd .= '/.HWMargins ['.$margin_left_right.' '.$margin_bottom.' '.$margin_left_right.' 18] ';
+		$cmd .= '/countspaces {  [ exch { dup 32 ne { pop } if  } forall ] length } bind def  >> ';
+		$cmd .= 'setpagedevice viewJPEG"';
+
+		exec($cmd, $out, $ret);
+		if ($ret != 0)
+		{
+			$this->errormsg = 'jpegToPdf ist derzeit nicht möglich. Bitte informieren Sie den Administrator';
+			return false;
+		}
+		return true;
+	}
+}