Refbase update_2021-01-28_15_58
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includes/execute.inc.php
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includes/execute.inc.php
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<?php
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// Project: Web Reference Database (refbase) <http://www.refbase.net>
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// Copyright: Matthias Steffens <mailto:refbase@extracts.de> and the file's
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// original author(s).
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//
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// This code is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY. Please see the GNU General Public
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// License for more details.
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//
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// File: ./includes/execute.inc.php
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// Repository: $HeadURL: file:///svn/p/refbase/code/branches/bleeding-edge/includes/execute.inc.php $
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// Author(s): Richard Karnesky <mailto:karnesky@gmail.com> and
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// Matthias Steffens <mailto:refbase@extracts.de>
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//
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// Created: 16-Dec-05, 18:00
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// Modified: $Date: 2012-11-12 22:43:32 +0000 (Mon, 12 Nov 2012) $
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// $Author: karnesky $
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// $Revision: 1366 $
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// This file contains functions that deal with execution of shell commands and provides
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// fixes for 'exec()' on certain win32 systems (based on rivera at spamjoy dot unr dot edu's
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// 'wind_exec()' function <http://php.net/function.exec>).
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// Note: Since the 'exec()' function is used, some things may not work if
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//'safe_mode' is set to 'On' in your 'php.ini' file. If you need or want to
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// keep 'safe_mode=ON' then you'll need to put the programs within the
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// directory that's specified in 'safe_mode_exec_dir'.
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// --------------------------------------------------------------------
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// Import records using the bibutils program given in '$program'
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function importBibutils($sourceText, $program)
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{
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global $contentTypeCharset; // defined in 'ini.inc.php'
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// Get the absolute path for the bibutils package:
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// (function 'getExternalUtilityPath()' is defined in 'include.inc.php')
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$bibutilsPath = getExternalUtilityPath("bibutils");
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// Write the source data to a temporary file:
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$tempFile = writeToTempFile($sourceText);
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// Set input and output encoding:
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if ($contentTypeCharset != "UTF-8")
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{
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$inputEncodingArg = " -i iso8859_1";
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$outputEncodingArg = " -o iso8859_1";
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}
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else
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{
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$inputEncodingArg = " -i utf8";
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$outputEncodingArg = " -o utf8";
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}
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// Pass this temp file to the bibutils utility for conversion:
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$outputFile = convertBibutils($bibutilsPath, $tempFile, $program, $inputEncodingArg, $outputEncodingArg);
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unlink($tempFile);
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// Read the resulting output file and return the converted data:
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$resultString = readFromFile($outputFile);
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unlink($outputFile);
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return $resultString;
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}
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// --------------------------------------------------------------------
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// Export records using the bibutils program given in '$program'
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function exportBibutils($result, $program)
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{
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global $contentTypeCharset; // these variables are defined in 'ini.inc.php'
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global $convertExportDataToUTF8;
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// Get the absolute path for the bibutils package:
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// (function 'getExternalUtilityPath()' is defined in 'include.inc.php')
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$bibutilsPath = getExternalUtilityPath("bibutils");
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// Generate and serve a MODS XML file of ALL records:
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// (function 'modsCollection()' is defined in 'modsxml.inc.php')
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$recordCollection = modsCollection($result);
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// Write the MODS XML data to a temporary file:
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$tempFile = writeToTempFile($recordCollection);
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// Set input and output encoding:
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if (($convertExportDataToUTF8 == "no") AND ($contentTypeCharset != "UTF-8"))
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{
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$inputEncodingArg = " -i iso8859_1";
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$outputEncodingArg = " -o iso8859_1";
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}
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else
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{
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$inputEncodingArg = " -i utf8";
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$outputEncodingArg = " -o utf8";
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}
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// Pass this temp file to the bibutils utility for conversion:
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$outputFile = convertBibutils($bibutilsPath, $tempFile, $program, $inputEncodingArg, $outputEncodingArg);
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unlink($tempFile);
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// Read the resulting output file and return the converted data:
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$resultString = readFromFile($outputFile);
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unlink($outputFile);
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return $resultString;
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}
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// --------------------------------------------------------------------
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// Convert file contents using the bibutils program given in '$program'
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function convertBibutils($bibutilsPath, $tempFile, $program, $inputEncodingArg, $outputEncodingArg)
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{
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global $sessionTempDir; // defined in 'ini.inc.php'
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$outputFile = tempnam($sessionTempDir, "refbase-");
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$cmd = $bibutilsPath . $program . $inputEncodingArg . $outputEncodingArg . " " . $tempFile;
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execute($cmd, $outputFile);
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return $outputFile;
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}
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// --------------------------------------------------------------------
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// Execute shell command
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function execute($cmd, $outputFile)
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{
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if (getenv("OS") == "Windows_NT")
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executeWin32($cmd . " > " . $outputFile);
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else
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{
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exec($cmd, $output);
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arrayToFile($output, $outputFile);
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}
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}
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// --------------------------------------------------------------------
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// Execute shell command on win32 systems
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function executeWin32($cmd)
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{
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$cmdline = "cmd /C ". $cmd;
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// Make a new instance of the COM object
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$WshShell = new COM("WScript.Shell");
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// Make the command window but dont show it
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$oExec = $WshShell->Run($cmdline, 0, true);
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}
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// --------------------------------------------------------------------
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// Write data to a temporary file
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function writeToTempFile($sourceText)
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{
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global $sessionTempDir; // defined in 'ini.inc.php'
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$tempFile = tempnam($sessionTempDir, "refbase-");
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$tempFileHandle = fopen($tempFile, "w"); // open temp file with write permission
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fwrite($tempFileHandle, $sourceText); // save data to temp file
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fclose($tempFileHandle); // close temp file
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return $tempFile;
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}
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// --------------------------------------------------------------------
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// Get file contents
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function readFromFile($file)
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{
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// Enable PHP to detect Mac (CR) EOL conventions:
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// (see <http://www.php.net/manual/en/ref.filesystem.php#ini.auto-detect-line-endings>)
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ini_set('auto_detect_line_endings', true);
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$fileContents = file_get_contents($file);
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// Remove UTF-8 BOM if present
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$bom = "\xef\xbb\xbf";
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if (0 == strncmp($fileContents, $bom, 3)) {
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$fileContents = substr($fileContents, 3);
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}
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return $fileContents;
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}
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// --------------------------------------------------------------------
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// Write an array (as from $return argument in exec) to a file
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function arrayToFile($array, $outputFile)
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{
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return (stringToFile(implode("\n", $array), $outputFile));
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}
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function stringToFile($string, $outputFile)
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{
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$rc = false;
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do
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{
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if (!($f = fopen($outputFile, "wa+")))
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{
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$rc = 1;
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break;
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}
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if (!fwrite($f, $string))
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{
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$rc = 2;
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break;
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}
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$rc = true;
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}
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while (0);
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if ($f)
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fclose($f);
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return ($rc);
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}
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// --------------------------------------------------------------------
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?>
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