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<?php // $Id: uploadgroups.php, 2005/10/31 19:09:31
/// Bulk group creation registration script from a comma separated file
require_once('../../../config.php');
require_once('../../lib.php');
$mycourseid = required_param('id', PARAM_INT); // Course id
if (! $course = get_record('course', 'id', $mycourseid) ) {
error("That's an invalid course id");
}
require_login($course->id);
if (!isadmin() && !isteacheredit($course->id)) {
error("You must be an administrator to edit users this way.");
}
//if (!confirm_sesskey()) {
// error(get_string('confirmsesskeybad', 'error'));
//}
$strimportgroups = get_string("importgroups");
$csv_encode = '/\&\#44/';
if (isset($CFG->CSV_DELIMITER)) {
$csv_delimiter = '\\' . $CFG->CSV_DELIMITER;
$csv_delimiter2 = $CFG->CSV_DELIMITER;
if (isset($CFG->CSV_ENCODE)) {
$csv_encode = '/\&\#' . $CFG->CSV_ENCODE . '/';
}
} else {
$csv_delimiter = "\,";
$csv_delimiter2 = ",";
}
/// Print the header
print_header("$course->shortname: $strimportgroups", "$course->fullname",
"<a href=\"$CFG->wwwroot/course/view.php?id=$course->id\">$course->shortname</a> ".
"-> <a href=\"$CFG->wwwroot/course/import.php?id=$course->id\">".get_string('import')."</a> ".
"-> $strimportgroups");
/// If a file has been uploaded, then process it
require_once($CFG->dirroot.'/lib/uploadlib.php');
$um = new upload_manager('userfile',false,false,null,false,0);
if ($um->preprocess_files()) {
$filename = $um->files['userfile']['tmp_name'];
//Fix mac/dos newlines
$text = my_file_get_contents($filename);
$text = preg_replace('!\r\n?!',"\n",$text);
$fp = fopen($filename, "w");
fwrite($fp,$text);
fclose($fp);
$fp = fopen($filename, "r");
// make arrays of valid fields for error checking
$required = array("groupname" => 1, );
$optionalDefaults = array("lang" => 1, );
$optional = array("coursename" => 1,
"idnumber" =>1,
"description" => 1,
"password" => 1,
"theme" => 1,
"picture" => 1,
"hidepicture" => 1, );
// --- get header (field names) ---
$header = split($csv_delimiter, fgets($fp,1024));
// check for valid field names
foreach ($header as $i => $h) {
$h = trim($h); $header[$i] = $h; // remove whitespace
if (!($required[$h] or $optionalDefaults[$h] or $optional[$h])) {
error(get_string('invalidfieldname', 'error', $h), 'index.php?id='.$id.'&sesskey='.$USER->sesskey);
}
if ($required[$h]) {
$required[$h] = 2;
}
}
// check for required fields
foreach ($required as $key => $value) {
if ($value < 2) {
error(get_string('fieldrequired', 'error', $key), 'uploaduser.php?id='.$id.'&sesskey='.$USER->sesskey);
}
}
$linenum = 2; // since header is line 1
while (!feof ($fp)) {
$newgroup = new object();//to make Martin happy
foreach ($optionalDefaults as $key => $value) {
$newgroup->$key = current_language(); //defaults to current language
}
//Note: commas within a field should be encoded as , (for comma separated csv files)
//Note: semicolon within a field should be encoded as ; (for semicolon separated csv files)
$line = split($csv_delimiter, fgets($fp,1024));
foreach ($line as $key => $value) {
//decode encoded commas
$record[$header[$key]] = preg_replace($csv_encode,$csv_delimiter2,trim($value));
}
if ($record[$header[0]]) {
// add a new group to the database
// add fields to object $user
foreach ($record as $name => $value) {
// check for required values
if ($required[$name] and !$value) {
error(get_string('missingfield', 'error', $name). " ".
get_string('erroronline', 'error', $linenum) .". ".
get_string('processingstops', 'error'),
'uploaduser.php?sesskey='.$USER->sesskey);
}
// password needs to be encrypted
else if ($name == "password") {
$newgroup->password = md5($value);
}
else if ($name == "groupname") {
$newgroup->name = addslashes($value);
}
// normal entry
else {
$newgroup->{$name} = addslashes($value);
}
}
///Find the courseid of the course with the given shortname
//if idnumber is set, we use that.
//unset invalid courseid
if ($newgroup->idnumber){
if (!$mycourse = get_record('course', 'idnumber',$newgroup->idnumber)){
notify(get_string('unknowncourseidnumber', 'error', $newgroup->idnumber));
unset($newgroup->courseid);//unset so 0 doesnt' get written to database
}
$newgroup->courseid = $mycourse->id;
}
//else use course short name to look up
//unset invalid coursename (if no id)
else if ($newgroup->coursename){
if (!$mycourse = get_record('course', 'shortname',$newgroup->coursename)){
notify(get_string('unknowncourse', 'error', $newgroup->coursename));
unset($newgroup->courseid);//unset so 0 doesnt' get written to database
}
$newgroup->courseid = $mycourse->id;
}
//else juse use current id
else{
$newgroup->courseid = $mycourseid;
}
//if courseid is set
if (isset($newgroup->courseid)){
$newgroup->timecreated = time();
$linenum++;
$groupname = $newgroup->name;
///Teachers can not upload groups in courses they are not teaching...
if (!isadmin() and !isteacheredit($newgroup->courseid)){
notify("$newgroup->name ".get_string('notaddedto').$newgroup->coursename.get_string('notinyourcapacity'));
}
else {
if (get_record("groups","name",$groupname,"courseid",$newgroup->courseid) || !($newgroup->id = insert_record("groups", $newgroup))) {
//Record not added - probably because group is already registered
//In this case, output groupname from previous registration
if ($group = get_record("groups","name",$groupname)) {
notify("$newgroup->name ".get_string('groupexistforcourse', 'error', $groupname));
} else {
notify(get_string('groupnotaddederror', 'error', $groupname));
}
}
else {
notify(get_string('group')." $newgroup->name ".get_string('addedsuccessfully'));
}
}
} //close courseid validity check
unset ($newgroup);
}//close if ($record[$header[0]])
}//close while($fp)
fclose($fp);
echo '<hr />';
}
/// Print the form
require('mod.php');
print_footer($course);
function my_file_get_contents($filename, $use_include_path = 0) {
/// Returns the file as one big long string
$data = "";
$file = @fopen($filename, "rb", $use_include_path);
if ($file) {
while (!feof($file)) {
$data .= fread($file, 1024);
}
fclose($file);
}
return $data;
}
?>
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