00001 <?php
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00037 class ilUtil
00038 {
00046 function getImageTagByType($a_type, $a_path, $a_big = false)
00047 {
00048 global $lng;
00049
00050 if ($a_big)
00051 {
00052 $big = "_b";
00053 }
00054 $filename = "icon_".$a_type."$big.gif";
00055
00056 return "<img src=\"".ilUtil::getImagePath($filename)."\" alt=\"".$lng->txt("obj_".$a_type)."\" title=\"".$lng->txt("obj_".$a_type)."\" border=\"0\" vspace=\"0\"/>";
00057
00058 }
00059
00068 function getImagePath($img, $in_module = false, $mode = "output", $offline = false)
00069 {
00070 global $ilias, $styleDefinition, $ilCtrl;
00071
00072 if(defined("ILIAS_MODULE") and $mode != "filesystem")
00073 {
00074
00075 $base = '';
00076 for($i = 1;$i < count(explode('/',ILIAS_MODULE));$i++)
00077 {
00078 $base .= "../";
00079 }
00080
00081 $dir .= ($base.".");
00082
00083
00084
00085 }
00086 else
00087 {
00088 $dir = "";
00089 }
00090 $base = "./";
00091 if ($in_module)
00092 {
00093
00094
00095 if (!empty($_GET["baseClass"]))
00096 {
00097 $base.= $ilCtrl->getModuleDir()."/";
00098 }
00099 else
00100 {
00101 if(defined("ILIAS_MODULE"))
00102 {
00103 $base.= ILIAS_MODULE."/";
00104 }
00105 }
00106 }
00107 $base .= "templates/";
00108 if (is_object($styleDefinition))
00109 {
00110
00111 $st_image_dir = $styleDefinition->getImageDirectory($ilias->account->prefs["style"]);
00112 #var_dump("<pre>",$st_image_dir,$ilias->account->prefs["style"],"<pre>");
00113
00114 $user_skin_and_style = $base.$ilias->account->skin."/".
00115 $st_image_dir.
00116 "/images/".$img;
00117 }
00118 $user_skin = $base.$ilias->account->skin."/images/".$img;
00119 $default = $base."default/images/".$img;
00120 if ($offline)
00121 {
00122 return "./images/".$img;
00123 }
00124 else if (@file_exists($user_skin_and_style) && $st_image_dir != "")
00125 {
00126 return $dir.$user_skin_and_style;
00127 }
00128 else if (file_exists($user_skin))
00129 {
00130 return $dir.$user_skin;
00131 }
00132
00133 return $dir.$default;
00134 }
00135
00144 function getHtmlPath($relative_path)
00145 {
00146 if (substr($relative_path, 0, 2) == './')
00147 {
00148 $relative_path = (substr($relative_path, 1));
00149 }
00150 if (substr($relative_path, 0, 1) != '/')
00151 {
00152 $relative_path = '/' . $relative_path;
00153 }
00154 $htmlpath = ILIAS_HTTP_PATH . $relative_path;
00155 return $htmlpath;
00156 }
00157
00167 function getJSPath($a_js)
00168 {
00169 global $ilias;
00170
00171 if(defined("ILIAS_MODULE"))
00172 {
00173 $dir = ".";
00174 }
00175 else
00176 {
00177 $dir = "";
00178 }
00179 $in_style = "./templates/".$ilias->account->skin."/".$ilias->account->prefs["style"]."/".$a_js;
00180 $in_skin = "./templates/".$ilias->account->skin."/".$a_js;
00181 $default = "./templates/default/".$a_js;
00182 if(@is_file($in_style))
00183 {
00184 return $dir.$in_style;
00185 }
00186 else
00187 {
00188 if (@is_file($in_skin))
00189 {
00190 return $dir.$in_skin;
00191 }
00192 else
00193 {
00194 return $dir.$default;
00195 }
00196 }
00197 }
00198
00204 function getStyleSheetLocation($mode = "output")
00205 {
00206 global $ilias;
00207
00208 if(defined("ILIAS_MODULE") && $mode != "filesystem")
00209 {
00210
00211 $base = '';
00212 for($i = 0;$i < count(explode('/',ILIAS_MODULE));$i++)
00213 {
00214 $base .= "../";
00215 }
00216 }
00217 else
00218 {
00219 $base = "./";
00220 }
00221
00222
00223 if ($mode != "filesystem")
00224 {
00225 $vers = str_replace(" ", "-", $ilias->getSetting("ilias_version"));
00226 $vers = "?vers=".str_replace(".", "-", $vers);
00227 }
00228
00229 return $base."templates/".$ilias->account->skin."/".$ilias->account->prefs["style"].".css".$vers;
00230 }
00231
00237 function getP3PLocation()
00238 {
00239 global $ilias;
00240
00241 if (defined("ILIAS_MODULE"))
00242 {
00243
00244 $base = '';
00245 for($i = 0;$i < count(explode('/',ILIAS_MODULE));$i++)
00246 {
00247 $base .= "../Services/Privacy/";
00248 }
00249 }
00250 else
00251 {
00252 $base = "./Services/Privacy/";
00253 }
00254
00255 if (is_file($base."w3c/p3p.xml"))
00256 {
00257 return ILIAS_HTTP_PATH."w3c/p3p.xml";
00258 }
00259 else
00260 {
00261 return ILIAS_HTTP_PATH."/w3c/p3p_template.xml";
00262 }
00263 }
00264
00270 function getNewContentStyleSheetLocation($mode = "output")
00271 {
00272 global $ilias;
00273
00274 if(defined("ILIAS_MODULE") && $mode != "filesystem")
00275 {
00276
00277 $base = '';
00278 for($i = 0;$i < count(explode('/',ILIAS_MODULE));$i++)
00279 {
00280 $base .= "../";
00281 }
00282 }
00283 else
00284 {
00285 $base = "./";
00286 }
00287
00288
00289 if ($mode != "filesystem")
00290 {
00291 $vers = str_replace(" ", "-", $ilias->getSetting("ilias_version"));
00292 $vers = "?vers=".str_replace(".", "-", $vers);
00293 }
00294
00295 $in_style = "templates/".$ilias->account->skin."/".$ilias->account->prefs["style"]."_cont.css";
00296 if (is_file("./".$in_style))
00297 {
00298 return $base.$in_style.$vers;
00299 }
00300 else
00301 {
00302 return $base."templates/default/delos_cont.css".$vers;
00303 }
00304 }
00305
00319 function formSelect($selected,$varname,$options,$multiple = false,$direct_text = false, $size = "0",
00320 $style_class = "")
00321 {
00322 global $lng;
00323
00324 if ($multiple == true)
00325 {
00326 $multiple = " multiple=\"multiple\"";
00327 }
00328 else
00329 {
00330 $multiple = "";
00331 $size = 0;
00332 }
00333
00334 if ($style_class != "")
00335 {
00336 $class = " class=\"".$style_class."\"";
00337 }
00338 else
00339 {
00340 $class = "";
00341 }
00342
00343 $str = "<select name=\"".$varname ."\"".$multiple." $class size=\"".$size."\">\n";
00344
00345 foreach ($options as $key => $val)
00346 {
00347 if ($direct_text)
00348 {
00349 $str .= " <option value=\"".$key."\"";
00350 }
00351 else
00352 {
00353 $str .= " <option value=\"".$val."\"";
00354 }
00355 if (is_array($selected) )
00356 {
00357 if (in_array($key,$selected))
00358 {
00359 $str .= " selected=\"selected\"";
00360 }
00361 }
00362 else if ($selected == $key)
00363 {
00364 $str .= " selected=\"selected\"";
00365 }
00366
00367 if ($direct_text)
00368 {
00369 $str .= ">".$val."</option>\n";
00370 }
00371 else
00372 {
00373 $str .= ">".$lng->txt($val)."</option>\n";
00374 }
00375 }
00376
00377 $str .= "</select>\n";
00378
00379 return $str;
00380 }
00381
00389 function getSelectName ($selected,$values)
00390 {
00391 return($values[$selected]);
00392 }
00393
00403 function formCheckbox ($checked,$varname,$value,$disabled = false)
00404 {
00405 $str = "<input type=\"checkbox\" name=\"".$varname."\"";
00406
00407 if ($checked == 1)
00408 {
00409 $str .= " checked=\"checked\"";
00410 }
00411
00412 if ($disabled)
00413 {
00414 $str .= " disabled=\"disabled\"";
00415 }
00416
00417 $array_var = false;
00418
00419 if (substr($varname,-2) == "[]")
00420 {
00421 $array_var = true;
00422 }
00423
00424
00425 if ($array_var)
00426 {
00427 $varname_id = substr($varname,0,-2)."_".$value;
00428 }
00429 else
00430 {
00431 $varname_id = $varname;
00432 }
00433
00434
00435 $varname_id = ereg_replace("\[","_",$varname_id);
00436 $varname_id = ereg_replace("\]","",$varname_id);
00437
00438 $str .= " value=\"".$value."\" id=\"".$varname_id."\" />\n";
00439
00440 return $str;
00441 }
00442
00452 function formDisabledRadioButton($checked,$varname,$value,$disabled)
00453 {
00454 if ($disabled) {
00455 $str = "<input disabled type=\"radio\" name=\"".$varname."\"";
00456 }
00457 else {
00458 $str = "<input type=\"radio\" name=\"".$varname."\"";
00459 }
00460 if ($checked == 1)
00461 {
00462 $str .= " checked=\"checked\"";
00463 }
00464
00465 $str .= " value=\"".$value."\"";
00466 $str .= " id=\"".$value."\" />\n";
00467
00468 return $str;
00469
00470 }
00471
00472
00481 function formRadioButton($checked,$varname,$value)
00482 {
00483 $str = "<input type=\"radio\" name=\"".$varname."\"";
00484 if ($checked == 1)
00485 {
00486 $str .= " checked=\"checked\"";
00487 }
00488
00489 $str .= " value=\"".$value."\"";
00490
00491 $str .= " id=\"".$value."\" />\n";
00492
00493 return $str;
00494 }
00495
00500 function checkInput ($vars)
00501 {
00502
00503
00504 }
00505
00511 function setPathStr ($a_path)
00512 {
00513 if ("" != $a_path && "/" != substr($a_path, -1))
00514 {
00515 $a_path .= "/";
00516
00517 }
00518
00519
00520 return $a_path;
00521 }
00522
00533 function switchColor ($a_num,$a_css1,$a_css2)
00534 {
00535 if (!($a_num % 2))
00536 {
00537 return $a_css1;
00538 }
00539 else
00540 {
00541 return $a_css2;
00542 }
00543 }
00544
00554 function showTabs($a_hl, $a_o)
00555 {
00556 global $lng;
00557
00558 $tpltab = new ilTemplate("tpl.tabs.html", true, true);
00559
00560 for ($i=1; $i<=4; $i++)
00561 {
00562 $tpltab->setCurrentBlock("tab");
00563 if ($a_hl == $i)
00564 {
00565 $tabtype = "tabactive";
00566 $tab = $tabtype;
00567 }
00568 else
00569 {
00570 $tabtype = "tabinactive";
00571 $tab = "tab";
00572 }
00573
00574 switch ($i)
00575 {
00576 case 1:
00577 $txt = $lng->txt("view_content");
00578 break;
00579 case 2:
00580 $txt = $lng->txt("edit_properties");
00581 break;
00582 case 3:
00583 $txt = $lng->txt("perm_settings");
00584 break;
00585 case 4:
00586 $txt = $lng->txt("show_owner");
00587 break;
00588 }
00589 $tpltab->setVariable("CONTENT", $txt);
00590 $tpltab->setVariable("TABTYPE", $tabtype);
00591 $tpltab->setVariable("TAB", $tab);
00592 $tpltab->setVariable("LINK", $a_o["LINK".$i]);
00593 $tpltab->parseCurrentBlock();
00594 }
00595
00596 return $tpltab->get();
00597 }
00598
00599
00600
00607 function checkFormEmpty ($emptyFields)
00608 {
00609
00610 $feedback = "";
00611
00612 foreach ($emptyFields as $key => $val)
00613 {
00614 if ($val == "") {
00615 if ($feedback != "") $feedback .= ", ";
00616 $feedback .= $key;
00617 }
00618 }
00619
00620 return $feedback;
00621 }
00622
00645 function Linkbar ($AScript,$AHits,$ALimit,$AOffset,$AParams = array(),$ALayout = array())
00646 {
00647 $LinkBar = "";
00648
00649 $layout_link = "";
00650 $layout_prev = "<<";
00651 $layout_next = ">>";
00652
00653
00654 if (count($ALayout > 0))
00655 {
00656 if ($ALayout["link"])
00657 {
00658 $layout_link = " class=\"".$ALayout["link"]."\"";
00659 }
00660
00661 if ($ALayout["prev"])
00662 {
00663 $layout_prev = $ALayout["prev"];
00664 }
00665
00666 if ($ALayout["next"])
00667 {
00668 $layout_next = $ALayout["next"];
00669 }
00670 }
00671
00672
00673 if ($AHits > $ALimit)
00674 {
00675 if (!empty($AParams))
00676 {
00677 foreach ($AParams as $key => $value)
00678 {
00679 $params.= $key."=".$value."&";
00680 }
00681 }
00682
00683 if(strpos($AScript,'&'))
00684 {
00685 $link = $AScript."&".$params."offset=";
00686 }
00687 else
00688 {
00689 $link = $AScript."?".$params."offset=";
00690 }
00691
00692
00693 if ($AOffset >= 1)
00694 {
00695 $prevoffset = $AOffset - $ALimit;
00696 $LinkBar .= "<a".$layout_link." href=\"".$link.$prevoffset."\">".$layout_prev." </a>";
00697 }
00698
00699
00700 $pages=intval($AHits/$ALimit);
00701
00702
00703 if (($AHits % $ALimit))
00704 $pages++;
00705
00706
00707
00708
00709
00710 for ($i = 1 ;$i <= $pages ; $i++)
00711 {
00712 $newoffset=$ALimit*($i-1);
00713
00714 if ($newoffset == $AOffset)
00715 {
00716 $LinkBar .= "[".$i."] ";
00717 }
00718 else
00719 {
00720 $LinkBar .= '<a '.$layout_link.' href="'.
00721 $link.$newoffset.'">['.$i.']</a> ';
00722 }
00723 }
00724
00725
00726
00727
00728 if (! ( ($AOffset/$ALimit)==($pages-1) ) && ($pages!=1) )
00729 {
00730 $newoffset=$AOffset+$ALimit;
00731 $LinkBar .= "<a".$layout_link." href=\"".$link.$newoffset."\"> ".$layout_next."</a>";
00732 }
00733
00734 return $LinkBar;
00735 }
00736 else
00737 {
00738 return false;
00739 }
00740 }
00741
00750 function makeClickable($a_text)
00751 {
00752
00753 $ret = eregi_replace("([[:alnum:]]+)://([^[:space:]]*)([[:alnum:]#?/&=-])",
00754 "<a href=\"\\1://\\2\\3\" target=\"_blank\">\\1://\\2\\3</a>", $a_text);
00755
00756
00757 $ret = eregi_replace("([[:space:]]+)(www\.)([[:alnum:]#?/&=\.-]+)",
00758 "\\1<a href=\"http://\\2\\3\" target=\"_blank\">\\2\\3</a>", $ret);
00759
00760
00761 $ret = eregi_replace("([[:space:]]+)(ftp\.)([[:alnum:]#?/&=\.-]+)",
00762 "\\1<a href=\"ftp://\\2\\3\" target=\"_blank\">\\2\\3</a>", $ret);
00763
00764
00765 $ret = eregi_replace("(([a-z0-9_]|\\-|\\.)+@([^[:space:]]*)([[:alnum:]-]))",
00766 "<a href=\"mailto:\\1\">\\1</a>", $ret);
00767
00768 return($ret);
00769 }
00770
00787 function StopWatch($begin = -1)
00788 {
00789 $m = explode(" ",microtime());
00790 $m = $m[0] + $m[1];
00791
00792 if ($begin != -1)
00793 {
00794 $m = $m - $begin;
00795 }
00796
00797 return($m);
00798 }
00799
00816 function makeDateSelect($prefix, $year = "", $month = "", $day = "", $startyear = "",$a_long_month = true)
00817 {
00818 global $lng;
00819
00820 $now = getdate();
00821 if (!strlen($year)) $year = $now["year"];
00822 if (!strlen($month)) $month = $now["mon"];
00823 if (!strlen($day)) $day = $now["mday"];
00824
00825 $year = (int) $year;
00826 $month = (int) $month;
00827 $day = (int) $day;
00828
00829
00830 $sel_day .= "<select name=\"".$prefix."[d]\" id=\"".$prefix."_d\">\n";
00831
00832 for ($i = 1; $i <= 31; $i++)
00833 {
00834 $sel_day .= "<option value=\"$i\">" . sprintf("%02d", $i) . "</option>\n";
00835 }
00836 $sel_day .= "</select>\n";
00837 $sel_day = preg_replace("/(value\=\"$day\")/", "$1 selected=\"selected\"", $sel_day);
00838
00839
00840 $sel_month .= "<select name=\"".$prefix."[m]\" id=\"".$prefix."_m\">\n";
00841
00842 for ($i = 1; $i <= 12; $i++)
00843 {
00844 if($a_long_month)
00845 {
00846 $sel_month .= "<option value=\"$i\">" . $lng->txt("month_" . sprintf("%02d", $i) . "_long") . "</option>\n";
00847 }
00848 else
00849 {
00850 $sel_month .= "<option value=\"$i\">" . $i . "</option>\n";
00851 }
00852 }
00853 $sel_month .= "</select>\n";
00854 $sel_month = preg_replace("/(value\=\"$month\")/", "$1 selected=\"selected\"", $sel_month);
00855
00856
00857 $sel_year .= "<select name=\"".$prefix."[y]\" id=\"".$prefix."_y\">\n";
00858 if ((strlen($startyear) == 0) || ($startyear > $year))
00859 {
00860 $startyear = $year;
00861 }
00862 for ($i = $startyear; $i <= $year + 3; $i++)
00863 {
00864 $sel_year .= "<option value=\"$i\">" . sprintf("%04d", $i) . "</option>\n";
00865 }
00866 $sel_year .= "</select>\n";
00867 $sel_year = preg_replace("/(value\=\"$year\")/", "$1 selected=\"selected\"", $sel_year);
00868
00869 $dateformat = $lng->text["lang_dateformat"];
00870 $dateformat = strtolower(preg_replace("/\W/", "", $dateformat));
00871 $dateformat = strtolower(preg_replace("/(\w)/", "%%$1", $dateformat));
00872 $dateformat = preg_replace("/%%d/", $sel_day, $dateformat);
00873 $dateformat = preg_replace("/%%m/", $sel_month, $dateformat);
00874 $dateformat = preg_replace("/%%y/", $sel_year, $dateformat);
00875 return $dateformat;
00876 }
00877
00894 function makeTimeSelect($prefix, $short = true, $hour = "", $minute = "", $second = "",$a_use_default = true)
00895 {
00896 global $lng;
00897 if ($a_use_default and !strlen("$hour$minute$second")) {
00898 $now = localtime();
00899 $hour = $now[2];
00900 $minute = $now[1];
00901 $second = $now[0];
00902 } else {
00903 $hour = (int)$hour;
00904 $minute = (int)$minute;
00905 $second = (int)$second;
00906 }
00907
00908 $sel_hour .= "<select name=\"".$prefix."[h]\" id=\"".$prefix."_h\">\n";
00909
00910 for ($i = 0; $i <= 23; $i++)
00911 {
00912 $sel_hour .= "<option value=\"$i\">" . sprintf("%02d", $i) . "</option>\n";
00913 }
00914 $sel_hour .= "</select>\n";
00915 $sel_hour = preg_replace("/(value\=\"$hour\")/", "$1 selected=\"selected\"", $sel_hour);
00916
00917
00918 $sel_minute .= "<select name=\"".$prefix."[m]\" id=\"".$prefix."_m\">\n";
00919
00920 for ($i = 0; $i <= 59; $i++)
00921 {
00922 $sel_minute .= "<option value=\"$i\">" . sprintf("%02d", $i) . "</option>\n";
00923 }
00924 $sel_minute .= "</select>\n";
00925 $sel_minute = preg_replace("/(value\=\"$minute\")/", "$1 selected=\"selected\"", $sel_minute);
00926
00927 if (!$short) {
00928
00929 $sel_second .= "<select name=\"".$prefix."[s]\" id=\"".$prefix."_s\">\n";
00930
00931 for ($i = 0; $i <= 59; $i++)
00932 {
00933 $sel_second .= "<option value=\"$i\">" . sprintf("%02d", $i) . "</option>\n";
00934 }
00935 $sel_second .= "</select>\n";
00936 $sel_second = preg_replace("/(value\=\"$second\")/", "$1 selected=\"selected\"", $sel_second);
00937 }
00938 $timeformat = $lng->text["lang_timeformat"];
00939 if (strlen($timeformat) == 0) $timeformat = "H:i:s";
00940 $timeformat = strtolower(preg_replace("/\W/", "", $timeformat));
00941 $timeformat = preg_replace("/(\w)/", "%%$1", $timeformat);
00942 $timeformat = preg_replace("/%%h/", $sel_hour, $timeformat);
00943 $timeformat = preg_replace("/%%i/", $sel_minute, $timeformat);
00944 if ($short) {
00945 $timeformat = preg_replace("/%%s/", "", $timeformat);
00946 } else {
00947 $timeformat = preg_replace("/%%s/", $sel_second, $timeformat);
00948 }
00949 return $timeformat;
00950 }
00951
00952
00953
00954
00955
00956
00957
00958
00959
00960
00961
00962 function is_email($a_email)
00963 {
00964 return(preg_match("/^[-_.[:alnum:]]+@((([[:alnum:]]|[[:alnum:]][[:alnum:]-]*[[:alnum:]])\.)+(ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cat|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|com|coop|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|in|info|int|io|iq|ir|is|it|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mil|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no|np|nr|nt|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$/i",$a_email));
00965 }
00966
00967
00968
00969
00970
00971
00972
00973 function isPassword($a_passwd)
00974 {
00975 if (empty($a_passwd))
00976 {
00977 return false;
00978 }
00979
00980 if (strlen($a_passwd) < 6)
00981 {
00982 return false;
00983 }
00984
00985
00986
00987 if (!preg_match("/^[A-Za-z0-9_\.\+\?\#\-\*\@!\$\%\~]+$/", $a_passwd))
00988 {
00989 return false;
00990 }
00991
00992 return true;
00993 }
00994
00995
00996
00997
00998
00999
01000
01001 function isLogin($a_login)
01002 {
01003 if (empty($a_login))
01004 {
01005 return false;
01006 }
01007
01008 if (strlen($a_login) < 3)
01009 {
01010 return false;
01011 }
01012
01013 if (!ereg("^[A-Za-z0-9_\.\+\*\@!\$\%\~\-]+$", $a_login))
01014 {
01015 return false;
01016 }
01017
01018 return true;
01019 }
01020
01032 function shortenText ($a_str, $a_len, $a_dots = false, $a_next_blank = false)
01033 {
01034 include_once("./classes/class.ilStr.php");
01035 if (ilStr::strLen($a_str) > $a_len)
01036 {
01037 if ($a_next_blank)
01038 {
01039 $len = ilStr::strPos($a_str, " ", $a_len);
01040 }
01041 else
01042 {
01043 $len = $a_len;
01044 }
01045 $a_str = ilStr::subStr($a_str,0,$len);
01046
01047 if ($a_dots)
01048 {
01049 $a_str .= "...";
01050 }
01051 }
01052
01053 return $a_str;
01054 }
01055
01063 function attribsToArray($a_str)
01064 {
01065 $attribs = array();
01066 while (is_int(strpos($a_str, "=")))
01067 {
01068 $eq_pos = strpos($a_str, "=");
01069 $qu1_pos = strpos($a_str, "\"");
01070 $qu2_pos = strpos(substr($a_str, $qu1_pos + 1), "\"") + $qu1_pos + 1;
01071 if (is_int($eq_pos) && is_int($qu1_pos) && is_int($qu2_pos))
01072 {
01073 $var = trim(substr($a_str, 0, $eq_pos));
01074 $val = trim(substr($a_str, $qu1_pos + 1, ($qu2_pos - $qu1_pos) - 1));
01075 $attribs[$var] = $val;
01076 $a_str = substr($a_str, $qu2_pos + 1);
01077 }
01078 else
01079 {
01080 $a_str = "";
01081 }
01082 }
01083 return $attribs;
01084 }
01085
01094 function rCopy ($a_sdir, $a_tdir)
01095 {
01096
01097 if (!@is_dir($a_sdir) or
01098 !@is_dir($a_tdir))
01099 {
01100 return FALSE;
01101 }
01102
01103
01104 $dir = opendir($a_sdir);
01105
01106 while($file = readdir($dir))
01107 {
01108 if ($file != "." and
01109 $file != "..")
01110 {
01111
01112 if (@is_dir($a_sdir."/".$file))
01113 {
01114 if (!@is_dir($a_tdir."/".$file))
01115 {
01116 if (!ilUtil::makeDir($a_tdir."/".$file))
01117 return FALSE;
01118
01119
01120 }
01121
01122 if (!ilUtil::rCopy($a_sdir."/".$file,$a_tdir."/".$file))
01123 {
01124 return FALSE;
01125 }
01126 }
01127
01128
01129 if (@is_file($a_sdir."/".$file))
01130 {
01131 if (!copy($a_sdir."/".$file,$a_tdir."/".$file))
01132 {
01133 return FALSE;
01134 }
01135 }
01136 }
01137 }
01138 return TRUE;
01139 }
01140
01148 function getWebspaceDir($mode = "filesystem")
01149 {
01150 global $ilias;
01151
01152 if ($mode == "filesystem")
01153 {
01154 return "./".ILIAS_WEB_DIR."/".$ilias->client_id;
01155 }
01156 else
01157 {
01158 if (defined("ILIAS_MODULE"))
01159 {
01160 return "../".ILIAS_WEB_DIR."/".$ilias->client_id;
01161 }
01162 else
01163 {
01164 return "./".ILIAS_WEB_DIR."/".$ilias->client_id;
01165 }
01166 }
01167
01168
01169 }
01170
01174 function getDataDir()
01175 {
01176 return CLIENT_DATA_DIR;
01177
01178
01179
01180 }
01181
01189 function getUsersOnline($a_user_id = 0)
01190 {
01191 global $ilias;
01192
01193 if ($a_user_id == 0)
01194 {
01195 $where = "WHERE user_id != 0";
01196 }
01197 else
01198 {
01199 $where = "WHERE user_id = '".$a_user_id."'";
01200 }
01201
01202 $q = "SELECT count(user_id) as num,user_id,data,firstname,lastname,title,login,last_login FROM usr_session ".
01203 "LEFT JOIN usr_data ON user_id=usr_id ".$where.
01204 " AND expires>UNIX_TIMESTAMP() ".
01205 "GROUP BY user_id ".
01206 "ORDER BY lastname, firstname";
01207 $r = $ilias->db->query($q);
01208
01209 while ($user = $r->fetchRow(DB_FETCHMODE_ASSOC))
01210 {
01211 $users[$user["user_id"]] = $user;
01212 }
01213
01214 return $users ? $users : array();
01215 }
01216
01225 function getAssociatedUsersOnline($a_user_id)
01226 {
01227 global $ilias;
01228
01229
01230 $time_diff = 0;
01231
01232
01233
01234
01235
01236 $q = "SELECT DISTINCT dat.obj_id as obj_id ".
01237 "FROM rbac_ua AS ua ".
01238 "JOIN rbac_fa AS fa ON fa.rol_id = ua.rol_id ".
01239 "JOIN object_reference AS r1 ON r1.ref_id = fa.parent ".
01240 "JOIN tree ON tree.child = r1.ref_id ".
01241 "JOIN object_reference AS r2 ON r2.ref_id = tree.parent ".
01242 "JOIN object_data AS dat ON dat.obj_id = r2.obj_id ".
01243 "WHERE ua.usr_id = ".$a_user_id." ".
01244 "AND fa.assign = 'y' ".
01245 "AND dat.type IN ('grp','crs')";
01246 $r = $ilias->db->query($q);
01247 while ($row = $r->fetchRow(DB_FETCHMODE_ASSOC))
01248 {
01249 $groups_and_courses_of_user[] = $row["obj_id"];
01250 }
01251
01252
01253 if (count($groups_and_courses_of_user) == 0)
01254 {
01255 $q = "SELECT count(user_id) as num,user_id,data,firstname,lastname,title,login,last_login ".
01256 "FROM usr_session ".
01257 "JOIN usr_data ON user_id=usr_id ".
01258 "WHERE user_id = ".$a_user_id." ".
01259 "AND expires > UNIX_TIMESTAMP() - ".$time_diff." ".
01260 "GROUP BY user_id";
01261 }
01262 else
01263 {
01264 $q = "SELECT count(user_id) as num,s.user_id,s.data,ud.firstname,ud.lastname,ud.title,ud.login,ud.last_login ".
01265 "FROM usr_session AS s ".
01266 "JOIN usr_data AS ud ON ud.usr_id = s.user_id ".
01267 "JOIN rbac_ua AS ua ON ua.usr_id = s.user_id ".
01268 "JOIN rbac_fa AS fa ON fa.rol_id = ua.rol_id ".
01269 "JOIN tree ON tree.child = fa.parent ".
01270 "JOIN object_reference AS or1 ON or1.ref_id = tree.parent ".
01271 "JOIN object_data AS od ON od.obj_id = or1.obj_id ".
01272 "WHERE s.user_id != 0 ".
01273 "AND s.expires > UNIX_TIMESTAMP() - ".$time_diff." ".
01274 "AND fa.assign = 'y' ".
01275 "AND od.obj_id IN (".implode(",",$groups_and_courses_of_user).") ".
01276 "GROUP BY s.user_id ".
01277 "ORDER BY ud.lastname, ud.firstname";
01278 }
01279 $r = $ilias->db->query($q);
01280
01281 while ($user = $r->fetchRow(DB_FETCHMODE_ASSOC))
01282 {
01283 $users[$user["user_id"]] = $user;
01284 }
01285
01286 return $users ? $users : array();
01287 }
01288
01294 function ilTempnam()
01295 {
01296 $temp_path = ilUtil::getDataDir() . "/temp";
01297 if (!is_dir($temp_path))
01298 {
01299 ilUtil::createDirectory($temp_path);
01300 }
01301 $temp_name = tempnam($temp_path, "tmp");
01302
01303
01304
01305
01306
01307 $temp_name = str_replace("\\", "/", $temp_name);
01308
01309 unlink($temp_name);
01310 return $temp_name;
01311 }
01312
01318 function createDirectory($a_dir, $a_mod = 0755)
01319 {
01320 ilUtil::makeDir($a_dir);
01321
01322
01323 }
01324
01325
01332 function unzip($a_file, $overwrite = false)
01333 {
01334
01335
01336 $pathinfo = pathinfo($a_file);
01337 $dir = $pathinfo["dirname"];
01338 $file = $pathinfo["basename"];
01339
01340
01341 $cdir = getcwd();
01342 chdir($dir);
01343 $unzip = PATH_TO_UNZIP;
01344
01345
01346
01347
01348
01349 $unzipcmd = $unzip." -Z -1 ".ilUtil::escapeShellArg($file);
01350 exec($unzipcmd, $arr);
01351 $zdirs = array();
01352
01353 foreach($arr as $line)
01354 {
01355 if(is_int(strpos($line, "/")))
01356 {
01357 $zdir = substr($line, 0, strrpos($line, "/"));
01358 $nr = substr_count($zdir, "/");
01359
01360 while ($zdir != "")
01361 {
01362 $nr = substr_count($zdir, "/");
01363 $zdirs[$zdir] = $nr;
01364
01365 $zdir = substr($zdir, 0, strrpos($zdir, "/"));
01366 }
01367 }
01368 }
01369
01370 asort($zdirs);
01371
01372 foreach($zdirs as $zdir => $nr)
01373 {
01374 ilUtil::createDirectory($zdir);
01375 }
01376
01377
01378 if ($overvwrite)
01379 {
01380 $unzipcmd = $unzip." ".ilUtil::escapeShellArg($file);
01381 }
01382 else
01383 {
01384 $unzipcmd = $unzip." -o ".ilUtil::escapeShellArg($file);
01385 }
01386 exec($unzipcmd);
01387
01388 chdir($cdir);
01389 }
01390
01394 function zip($a_dir, $a_file)
01395 {
01396
01397
01398 $cdir = getcwd();
01399
01400 $pathinfo = pathinfo($a_file);
01401 $dir = $pathinfo["dirname"];
01402 $file = $pathinfo["basename"];
01403
01404
01405 $cdir = getcwd();
01406 chdir($dir);
01407
01408 $zip = PATH_TO_ZIP;
01409
01410
01411 if (is_array($a_dir))
01412 {
01413 $source = "";
01414 foreach($a_dir as $dir)
01415 {
01416 $name = basename($dir);
01417 $source.= " ".ilUtil::escapeShellArg($name);
01418 }
01419 }
01420 else
01421 {
01422 $name = basename($a_dir);
01423 $source = ilUtil::escapeShellArg($name);
01424 }
01425
01426 $zipcmd = $zip." -r ".ilUtil::escapeShellArg($a_file)." ".$source;
01427 exec($zipcmd);
01428
01429 chdir($cdir);
01430 }
01431
01435 function getConvertCmd()
01436 {
01437 return PATH_TO_CONVERT;
01438
01439
01440
01441 }
01442
01450 function convertImage($a_from, $a_to, $a_target_format = "", $a_geometry = "")
01451 {
01452 $format_str = ($a_target_format != "")
01453 ? strtoupper($a_target_format).":"
01454 : "";
01455 $geometry = ($a_geometry != "")
01456 ? " -geometry ".$a_geometry."x".$a_geometry." "
01457 : "";
01458 $convert_cmd = ilUtil::getConvertCmd()." ".
01459 ilUtil::escapeShellArg($a_from)." ".$geometry.ilUtil::escapeShellArg($format_str.$a_to);
01460 system($convert_cmd);
01461 }
01462
01471 function resizeImage($a_from, $a_to, $a_width, $a_height)
01472 {
01473 $size = " -resize ".$a_width."x".$a_height."! ";
01474 $convert_cmd = ilUtil::getConvertCmd()." ".
01475 ilUtil::escapeShellArg($a_from)." ".$size.ilUtil::escapeShellArg($a_to);
01476 system($convert_cmd);
01477 }
01478
01484 function html2pdf($html, $pdf_file)
01485 {
01486
01487
01488 $html_file = str_replace(".pdf",".html",$pdf_file);
01489
01490 $fp = fopen( $html_file ,"wb");
01491 fwrite($fp, $html);
01492 fclose($fp);
01493
01494 $htmldoc_path = PATH_TO_HTMLDOC;
01495
01496
01497 $htmldoc = $htmldoc_path." ";
01498 $htmldoc .= "--no-toc ";
01499 $htmldoc .= "--no-jpeg ";
01500 $htmldoc .= "--webpage ";
01501 $htmldoc .= "--outfile " . ilUtil::escapeShellArg($pdf_file) . " ";
01502 $htmldoc .= "--bodyfont Arial ";
01503 $htmldoc .= "--charset iso-8859-15 ";
01504 $htmldoc .= "--color ";
01505 $htmldoc .= "--size A4 ";
01506 $htmldoc .= "--format pdf ";
01507 $htmldoc .= "--footer ... ";
01508 $htmldoc .= "--header ... ";
01509 $htmldoc .= "--left 60 ";
01510
01511 $htmldoc .= $html_file;
01512 exec($htmldoc);
01513
01514 }
01515
01519 function deliverData($a_data, $a_filename, $mime = "application/octet-stream", $charset = "")
01520 {
01521 $disposition = "attachment";
01522
01523
01524 if (isset($_SERVER["HTTPS"])) {
01525
01526
01530 #header("Pragma: ");
01531 #header("Cache-Control: ");
01532 #header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
01533 #header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
01534 #header("Cache-Control: no-store, no-cache, must-revalidate"); // HTTP/1.1
01535 #header("Cache-Control: post-check=0, pre-check=0", false);
01536 }
01537 else if ($disposition == "attachment")
01538 {
01539 header("Cache-control: private");
01540 }
01541 else
01542 {
01543 header("Cache-Control: no-cache, must-revalidate");
01544 header("Pragma: no-cache");
01545 }
01546
01547 $ascii_filename = ilUtil::getASCIIFilename($a_filename);
01548
01549 if (strlen($charset))
01550 {
01551 $charset = "; charset=$charset";
01552 }
01553 header("Content-Type: $mime$charset");
01554 header("Content-Disposition:$disposition; filename=\"".$ascii_filename."\"");
01555 header("Content-Description: ".$ascii_filename);
01556 header("Content-Length: ".(string)(strlen($a_data)));
01557
01558 if($_SERVER['HTTPS'])
01559 {
01560 header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
01561 header('Pragma: public');
01562 }
01563
01564 header("Connection: close");
01565 echo $a_data;
01566 exit;
01567 }
01568
01572 function deliverFile($a_file, $a_filename,$a_mime = '')
01573 {
01574 $disposition = "attachment";
01575
01576 if(strlen($a_mime))
01577 {
01578 $mime = $a_mime;
01579 }
01580 else
01581 {
01582 $mime = "application/octet-stream";
01583 }
01584 if (isset($_SERVER["HTTPS"]))
01585 {
01586
01587
01591 #header("Pragma: ");
01592 #header("Pragma: no-cache");
01593 #header("Cache-Control: ");
01594 #header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
01595 #header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
01596 #header("Cache-Control: no-store, no-cache, must-revalidate"); // HTTP/1.1
01597 ##header("Cache-Control: post-check=0, pre-check=0", false);
01598 }
01599 else if ($disposition == "attachment")
01600 {
01601 header("Cache-control: private");
01602 }
01603 else
01604 {
01605 header("Cache-Control: no-cache, must-revalidate");
01606 header("Pragma: no-cache");
01607 }
01608
01609 $ascii_filename = ilUtil::getASCIIFilename($a_filename);
01610
01611 header("Content-Type: $mime");
01612 header("Content-Disposition:$disposition; filename=\"".$ascii_filename."\"");
01613 header("Content-Description: ".$ascii_filename);
01614 header("Content-Length: ".(string)(filesize($a_file)));
01615
01616 if($_SERVER['HTTPS'])
01617 {
01618 header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
01619 header('Pragma: public');
01620 }
01621
01622 header("Connection: close");
01623 ilUtil::readFile( $a_file );
01624 exit;
01625 }
01626
01627
01634 function readFile($a_file)
01635 {
01636 $chunksize = 1*(1024*1024);
01637 $buffer = '';
01638 $handle = fopen($a_file, 'rb');
01639 if ($handle === false)
01640 {
01641 return false;
01642 }
01643 while (!feof($handle))
01644 {
01645 $buffer = fread($handle, $chunksize);
01646 print $buffer;
01647 }
01648 return fclose($handle);
01649 }
01650
01656 function getASCIIFilename($a_filename)
01657 {
01658
01659
01660
01661
01662
01663
01675
01676 $user_agent = strtolower($_SERVER["HTTP_USER_AGENT"]);
01677 if ((is_integer(strpos($user_agent, "msie"))) && is_integer(strpos($user_agent, "win")))
01678 {
01681
01682 $ascii_filename = utf8_decode($a_filename);
01683 }
01684 else
01685 {
01688
01689 $ascii_filename = htmlentities($a_filename,ENT_NOQUOTES,'UTF-8');
01690 $ascii_filename = preg_replace('/\&(.)[^;]*;/','\\1', $ascii_filename);
01691 $ascii_filename = preg_replace('/[\x7f-\xff]/','_', $ascii_filename);
01692 }
01693
01694
01695
01696 if (is_integer(strpos($user_agent, "win")))
01697 {
01698 $ascii_filename = preg_replace('/[:\x5c\/\*\?\"<>\|]/','_', $ascii_filename);
01699 }
01700
01701 return $ascii_filename;
01702 }
01703
01707 function getJavaPath()
01708 {
01709 return PATH_TO_JAVA;
01710
01711
01712
01713 }
01714
01719 function appendUrlParameterString($a_url, $a_par)
01720 {
01721 $url = (is_int(strpos($a_url, "?")))
01722 ? $a_url."&".$a_par
01723 : $a_url."?".$a_par;
01724
01725 return $url;
01726 }
01727
01742 function makeDir($a_dir)
01743 {
01744 $a_dir = trim($a_dir);
01745
01746
01747 if (substr($a_dir,-1) == "/")
01748 {
01749 $a_dir = substr($a_dir,0,-1);
01750 }
01751
01752
01753 if (!($path = substr($a_dir,0, strrpos($a_dir,"/") - strlen($a_dir))))
01754 {
01755 $path = ".";
01756 }
01757
01758
01759 umask(0000);
01760 return @mkdir($a_dir,fileperms($path));
01761 }
01762
01763
01776 function makeDirParents($a_dir)
01777 {
01778 $dirs = array($a_dir);
01779 $a_dir = dirname($a_dir);
01780 $last_dirname = '';
01781 while($last_dirname != $a_dir)
01782 {
01783 array_unshift($dirs, $a_dir);
01784 $last_dirname = $a_dir;
01785 $a_dir = dirname($a_dir);
01786 }
01787
01788
01789 $reverse_paths = array_reverse($dirs, TRUE);
01790 $found_index = -1;
01791 foreach ($reverse_paths as $key => $value)
01792 {
01793 if ($found_index == -1)
01794 {
01795 if (is_dir($value))
01796 {
01797 $found_index = $key;
01798 }
01799 }
01800 }
01801
01802 umask(0000);
01803 foreach ($dirs as $dirindex => $dir)
01804 {
01805
01806 if ($dirindex >= $found_index)
01807 {
01808 if (! file_exists($dir))
01809 {
01810 if (strcmp(substr($dir,strlen($dir)-1,1),"/") == 0)
01811 {
01812
01813
01814 $dir = substr($dir,0,strlen($dir)-1);
01815 }
01816 if (! mkdir($dir, $umask))
01817 {
01818 error_log("Can't make directory: $dir");
01819 return false;
01820 }
01821 }
01822 elseif (! is_dir($dir))
01823 {
01824 error_log("$dir is not a directory");
01825 return false;
01826 }
01827 else
01828 {
01829
01830 $umask = fileperms($dir);
01831 }
01832 }
01833 }
01834 return true;
01835 }
01836
01844 function delDir($a_dir)
01845 {
01846 if (!is_dir($a_dir) || is_int(strpos($a_dir, "..")))
01847 {
01848 return;
01849 }
01850
01851 $current_dir = opendir($a_dir);
01852
01853 $files = array();
01854
01855
01856
01857
01858
01859
01860 while($entryname = readdir($current_dir))
01861 {
01862 $files[] = $entryname;
01863 }
01864
01865 foreach($files as $file)
01866 {
01867 if(is_dir($a_dir."/".$file) and ($file != "." and $file!=".."))
01868 {
01869 ilUtil::delDir(${a_dir}."/".${file});
01870 }
01871 elseif ($file != "." and $file != "..")
01872 {
01873 unlink(${a_dir}."/".${file});
01874 }
01875 }
01876
01877 closedir($current_dir);
01878 rmdir(${a_dir});
01879 }
01880
01881
01885 function getDir($a_dir)
01886 {
01887 $current_dir = opendir($a_dir);
01888
01889 $dirs = array();
01890 $files = array();
01891 while($entry = readdir($current_dir))
01892 {
01893 if(is_dir($a_dir."/".$entry))
01894 {
01895 $dirs[$entry] = array("type" => "dir", "entry" => $entry);
01896 }
01897 else
01898 {
01899 $size = filesize($a_dir."/".$entry);
01900 $files[$entry] = array("type" => "file", "entry" => $entry,
01901 "size" => $size);
01902 }
01903 }
01904 ksort($dirs);
01905 ksort($files);
01906
01907 return array_merge($dirs, $files);
01908 }
01909
01910
01918 function getGroupId($a_parent_ref)
01919 {
01920 return false;
01921
01922 global $ilias;
01923
01924 $q = "SELECT DISTINCT tree FROM grp_tree WHERE child='".$a_parent_ref."'";
01925 $r = $ilias->db->query($q);
01926 $row = $r->fetchRow();
01927
01928 return $row[0] ? $row[0] : false;
01929 }
01930
01936 function stripSlashes($a_str, $a_strip_html = true, $a_allow = "")
01937 {
01938 if (ini_get("magic_quotes_gpc"))
01939 {
01940 $a_str = stripslashes($a_str);
01941 }
01942
01943
01944 if ($a_allow == "" && $a_strip_html)
01945 {
01946
01947
01948 $tags = array("b", "i", "strong", "em", "code", "cite", "gap", "sub", "sup", "pre", "strike");
01949
01950 foreach ($tags as $t)
01951 {
01952 $a_str = str_replace(array("<$t>", "<".strtoupper($t).">"),
01953 "<".$t.">", $a_str);
01954 $a_str = str_replace(array("</$t>", "</".strtoupper($t).">"),
01955 "</".$t.">", $a_str);
01956 }
01957
01958 $a_str = strip_tags($a_str);
01959
01960 foreach ($tags as $t)
01961 {
01962 $a_str = str_replace("<".$t.">", "<".$t.">", $a_str);
01963 $a_str = str_replace("</".$t.">", "</".$t.">", $a_str);
01964 }
01965
01966 }
01967 else
01968 {
01969
01970 if ($a_strip_html)
01971 {
01972 $a_str = ilUtil::stripScriptHTML($a_str, $a_allow);
01973 }
01974 }
01975
01976 return $a_str;
01977 }
01978
01979
01991 function stripScriptHTML($a_str, $a_allow = "", $a_rm_js = true)
01992 {
01993
01994
01995 $negativestr = "a,abbr,acronym,address,applet,area,b,base,basefont,".
01996 "bdo,big,blockquote,body,br,button,caption,center,cite,code,col,".
01997 "colgroup,dd,del,dfn,dir,div,dl,dt,em,fieldset,font,form,frame,".
01998 "frameset,h1,h2,h3,h4,h5,h6,head,hr,html,i,iframe,img,input,ins,isindex,kbd,".
01999 "label,legend,li,link,map,menu,meta,noframes,noscript,object,ol,".
02000 "optgroup,option,p,param,q,s,samp,script,select,small,span,".
02001 "strike,strong,style,sub,sup,table,tbody,td,textarea,tfoot,th,thead,".
02002 "title,tr,tt,u,ul,var";
02003 $a_allow = strtolower ($a_allow);
02004 $negatives = split (",",$negativestr);
02005 $outer_old_str = "";
02006 while($outer_old_str != $a_str)
02007 {
02008 $outer_old_str = $a_str;
02009 foreach ($negatives as $item)
02010 {
02011 $pos = strpos($a_allow, "<$item>");
02012
02013
02014 if ($pos === false)
02015 {
02016 $old_str = "";
02017 while($old_str != $a_str)
02018 {
02019 $old_str = $a_str;
02020 $a_str = preg_replace("/<\/?\s*$item(\/?)\s*>/i", "", $a_str);
02021 $a_str = preg_replace("/<\/?\s*$item(\/?)\s+([^>]*)>/i", "", $a_str);
02022 }
02023 }
02024 }
02025 }
02026
02027 if ($a_rm_js)
02028 {
02029
02030 $a_str = preg_replace("/<\s*\w*(\/?)(\s+[^>]*)?(\s+on[^>]*)>/i", "", $a_str);
02031
02032
02033 $a_str = preg_replace("/<\s*\w*(\/?)\s+[^>]*javascript[^>]*>/i", "", $a_str);
02034
02035
02036
02037 $a_str = preg_replace("/<\s*\w*(\/?)\s+[^>]*expression[^>]*>/i", "", $a_str);
02038 }
02039
02040 return $a_str;
02041 }
02042
02043
02049 function addSlashes($a_str)
02050 {
02051 if (ini_get("magic_quotes_gpc"))
02052 {
02053 return $a_str;
02054 }
02055 else
02056 {
02057 return addslashes($a_str);
02058 }
02059 }
02060
02070 function prepareFormOutput($a_str, $a_strip = false)
02071 {
02072 if($a_strip)
02073 {
02074 $a_str = ilUtil::stripSlashes($a_str);
02075 }
02076 $a_str = htmlspecialchars($a_str);
02077
02078
02079
02080 $a_str = str_replace("{", "{", $a_str);
02081 $a_str = str_replace("}", "}", $a_str);
02082
02083
02084
02085 return $a_str;
02086 }
02087
02088
02096 function prepareDBString($a_str)
02097 {
02098 return addslashes($a_str);
02099 }
02100
02101
02108 function removeItemFromDesktops($a_id)
02109 {
02110 global $ilDB;
02111
02112 $q = "SELECT user_id FROM desktop_item WHERE item_id = '".$a_id."'";
02113 $r = $ilDB->query($q);
02114
02115 $users = array();
02116
02117 while ($row = $r->fetchRow(DB_FETCHMODE_OBJECT))
02118 {
02119 $users[] = $row->user_id;
02120 }
02121
02122 if (count($users) > 0)
02123 {
02124 $q = "DELETE FROM desktop_item WHERE item_id = '".$a_id."'";
02125 $ilDB->query($q);
02126 }
02127
02128 return $users;
02129 }
02130
02131
02139 function extractParameterString($a_parstr)
02140 {
02141
02142 $par = array();
02143 $ok=true;
02144 while(($spos=strpos($a_parstr,"=")) && $ok)
02145 {
02146
02147 $cpar = substr($a_parstr,0,$spos);
02148 $a_parstr = substr($a_parstr,$spos,strlen($a_parstr)-$spos);
02149 while(substr($cpar,0,1)=="," ||substr($cpar,0,1)==" " || substr($cpar,0,1)==chr(13) || substr($cpar,0,1)==chr(10))
02150 $cpar = substr($cpar,1,strlen($cpar)-1);
02151 while(substr($cpar,strlen($cpar)-1,1)==" " || substr($cpar,strlen($cpar)-1,1)==chr(13) || substr($cpar,strlen($cpar)-1,1)==chr(10))
02152 $cpar = substr($cpar,0,strlen($cpar)-1);
02153
02154
02155 $cpar_old = "";
02156 while($cpar != $cpar_old)
02157 {
02158 $cpar_old = $cpar;
02159 $cpar = eregi_replace("[^a-zA-Z0-9_]", "", $cpar);
02160 }
02161
02162
02163 if ($cpar != "")
02164 {
02165 if($spos=strpos($a_parstr,"\""))
02166 {
02167 $a_parstr = substr($a_parstr,$spos+1,strlen($a_parstr)-$spos);
02168 $spos=strpos($a_parstr,"\"");
02169 if(is_int($spos))
02170 {
02171 $cval = substr($a_parstr,0,$spos);
02172 $par[$cpar]=$cval;
02173 $a_parstr = substr($a_parstr,$spos+1,strlen($a_parstr)-$spos-1);
02174 }
02175 else
02176 $ok=false;
02177 }
02178 else
02179 $ok=false;
02180 }
02181 }
02182
02183 if($ok) return $par; else return false;
02184 }
02185
02186 function assembleParameterString($a_par_arr)
02187 {
02188 if (is_array($a_par_arr))
02189 {
02190 $target_arr = array();
02191 foreach ($a_par_arr as $par => $val)
02192 {
02193 $target_arr[] = "$par=\"$val\"";
02194 }
02195 $target_str = implode(", ", $target_arr);
02196 }
02197
02198 return $target_str;
02199 }
02200
02204 function dumpString($a_str)
02205 {
02206 $ret = $a_str.": ";
02207 for($i=0; $i<strlen($a_str); $i++)
02208 {
02209 $ret.= ord(substr($a_str,$i,1))." ";
02210 }
02211 return $ret;
02212 }
02213
02214
02218 function yn2tf($a_yn)
02219 {
02220 if(strtolower($a_yn) == "y")
02221 {
02222 return true;
02223 }
02224 else
02225 {
02226 return false;
02227 }
02228 }
02229
02233 function tf2yn($a_tf)
02234 {
02235 if($a_tf)
02236 {
02237 return "y";
02238 }
02239 else
02240 {
02241 return "n";
02242 }
02243 }
02244
02253 function sort_func ($a, $b)
02254 {
02255 global $array_sortby,$array_sortorder;
02256
02257 if ($array_sortorder == "asc")
02258 {
02259 return strcasecmp($a[$array_sortby], $b[$array_sortby]);
02260 }
02261
02262 if ($array_sortorder == "desc")
02263 {
02264 return strcasecmp($b[$array_sortby], $a[$array_sortby]);
02265 }
02266 }
02267
02276 function sort_func_numeric ($a, $b)
02277 {
02278 global $array_sortby,$array_sortorder;
02279
02280 if ($array_sortorder == "asc")
02281 {
02282 return $a["$array_sortby"] > $b["$array_sortby"];
02283 }
02284
02285 if ($array_sortorder == "desc")
02286 {
02287 return $a["$array_sortby"] < $b["$array_sortby"];
02288 }
02289 }
02300 function sortArray($array,$a_array_sortby,$a_array_sortorder = 0,$a_numeric = false)
02301 {
02302 global $array_sortby,$array_sortorder;
02303
02304 $array_sortby = $a_array_sortby;
02305
02306 if ($a_array_sortorder == "desc")
02307 {
02308 $array_sortorder = "desc";
02309 }
02310 else
02311 {
02312 $array_sortorder = "asc";
02313 }
02314 if($a_numeric)
02315 {
02316 usort($array, array("ilUtil", "sort_func_numeric"));
02317 }
02318 else
02319 {
02320 usort($array, array("ilUtil", "sort_func"));
02321 }
02322
02323
02324 return $array;
02325 }
02326
02336 function unique_multi_array($array, $sub_key)
02337 {
02338 $target = array();
02339 $existing_sub_key_values = array();
02340
02341 foreach ($array as $key=>$sub_array)
02342 {
02343 if (!in_array($sub_array[$sub_key], $existing_sub_key_values))
02344 {
02345 $existing_sub_key_values[] = $sub_array[$sub_key];
02346 $target[$key] = $sub_array;
02347 }
02348 }
02349
02350 return $target;
02351 }
02352
02353
02361 function getGDSupportedImageType($a_desired_type)
02362 {
02363 $a_desired_type = strtolower($a_desired_type);
02364
02365 $im_types = ImageTypes();
02366
02367 switch($a_desired_type)
02368 {
02369 case "jpg":
02370 if ($im_types & IMG_JPG) return "jpg";
02371 if ($im_types & IMG_GIF) return "gif";
02372 if ($im_types & IMG_PNG) return "png";
02373 break;
02374
02375 case "gif":
02376 if ($im_types & IMG_GIF) return "gif";
02377 if ($im_types & IMG_JPG) return "jpg";
02378 if ($im_types & IMG_PNG) return "png";
02379 break;
02380
02381 case "png":
02382 if ($im_types & IMG_PNG) return "png";
02383 if ($im_types & IMG_JPG) return "jpg";
02384 if ($im_types & IMG_GIF) return "gif";
02385 break;
02386 }
02387
02388 return "";
02389 }
02390
02398 function deducibleSize($a_mime)
02399 {
02400 if (($a_mime == "image/gif") || ($a_mime == "image/jpeg") ||
02401 ($a_mime == "image/png") || ($a_mime == "application/x-shockwave-flash") ||
02402 ($a_mime == "image/tiff") || ($a_mime == "image/x-ms-bmp") ||
02403 ($a_mime == "image/psd") || ($a_mime == "image/iff"))
02404 {
02405 return true;
02406 }
02407 else
02408 {
02409 return false;
02410 }
02411 }
02412
02413
02419 function redirect($a_script)
02420 {
02421 global $log, $PHP_SELF;
02422
02423
02424 header("Location: ".$a_script);
02425 exit();
02426 }
02427
02433 function insertInstIntoID($a_value)
02434 {
02435 if (substr($a_value, 0, 4) == "il__")
02436 {
02437 $a_value = "il_".IL_INST_ID."_".substr($a_value, 4, strlen($a_value) - 4);
02438 }
02439
02440 return $a_value;
02441 }
02442
02451 function groupNameExists($a_group_name,$a_id = 0)
02452 {
02453 global $ilDB,$ilErr;
02454
02455 if (empty($a_group_name))
02456 {
02457 $message = get_class($this)."::_NameExists(): No groupname given!";
02458 $ilErr->raiseError($message,$ilErr->WARNING);
02459 }
02460
02461 $clause = ($a_id) ? " AND obj_id != '".$a_id."'" : "";
02462
02463 $q = "SELECT obj_id FROM object_data ".
02464 "WHERE title = '".addslashes($a_group_name)."' ".
02465 "AND type = 'grp'".
02466 $clause;
02467
02468 $r = $ilDB->query($q);
02469
02470 if ($r->numRows())
02471 {
02472 return true;
02473 }
02474 else
02475 {
02476 return false;
02477 }
02478 }
02479
02480
02481
02482
02483
02484
02485
02486 function searchGroups($a_search_str)
02487 {
02488 global $ilDB;
02489
02490 $q = "SELECT * ".
02491 "FROM object_data ,object_reference ".
02492 "WHERE (object_data.title LIKE '%".$a_search_str."%' ".
02493 "OR object_data.description LIKE '%".$a_search_str."%') ".
02494 "AND object_data.type = 'grp' ".
02495 "AND object_data.obj_id = object_reference.obj_id ".
02496 "ORDER BY title ";
02497
02498 $res = $ilDB->query($q);
02499
02500 while ($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
02501 {
02502
02503
02504 $ids[$row->obj_id] = array(
02505 "ref_id" => $row->ref_id,
02506 "title" => $row->title,
02507 "description" => $row->description);
02508 }
02509
02510 return $ids ? $ids : array();
02511 }
02512
02516 function getMemString()
02517 {
02518 $my_pid = getmypid();
02519 return ("MEMORY USAGE (% KB PID ): ".`ps -eo%mem,rss,pid | grep $my_pid`);
02520 }
02521
02525 function isWindows()
02526 {
02527 if (strtolower(substr(php_uname(), 0, 3)) == "win")
02528 {
02529 return true;
02530 }
02531 return false;
02532 }
02533
02534 function escapeShellArg($a_arg)
02535 {
02536 global $PHP_OS;
02537
02538 if (ini_get("safe_mode") == 1 || ilUtil::isWindows())
02539 {
02540 return $a_arg;
02541 }
02542 else
02543 {
02544 return escapeshellarg($a_arg);
02545 }
02546 }
02547
02548
02549
02550
02551
02552
02553
02554
02555
02556
02557
02558
02559
02560
02561
02562
02563
02564
02565
02566
02567
02568 function excelTime($year = "", $month = "", $day = "", $hour = "", $minute = "", $second = "")
02569 {
02570 $starting_time = mktime(0, 0, 0, 1, 2, 1970);
02571 if (strcmp("$year$month$day$hour$minute$second", "") == 0)
02572 {
02573 $target_time = time();
02574 }
02575 else
02576 {
02577 if ($year < 1970)
02578 {
02579 return 0;
02580 }
02581 }
02582 $target_time = mktime($hour, $minute, $second, $month, $day, $year);
02583 $difference = $target_time - $starting_time;
02584 $days = (($difference - ($difference % 86400)) / 86400);
02585 $difference = $difference - ($days * 86400) + 3600;
02586 return ($days + 25570 + ($difference / 86400));
02587 }
02588
02592 function renameExecutables($a_dir)
02593 {
02594 $def_arr = explode(",", SUFFIX_REPL_DEFAULT);
02595 foreach ($def_arr as $def)
02596 {
02597 ilUtil::rRenameSuffix($a_dir, trim($def), "sec");
02598 }
02599
02600 $def_arr = explode(",", SUFFIX_REPL_ADDITIONAL);
02601 foreach ($def_arr as $def)
02602 {
02603 ilUtil::rRenameSuffix($a_dir, trim($def), "sec");
02604 }
02605 }
02606
02617 function rRenameSuffix ($a_dir, $a_old_suffix, $a_new_suffix)
02618 {
02619 if ($a_dir == "/" || $a_dir == "" || is_int(strpos($a_dir, ".."))
02620 || trim($a_old_suffix) == "")
02621 {
02622 return false;
02623 }
02624
02625
02626 if (!@is_dir($a_dir))
02627 {
02628 return false;
02629 }
02630
02631
02632 $dir = opendir($a_dir);
02633
02634 while($file = readdir($dir))
02635 {
02636 if ($file != "." and
02637 $file != "..")
02638 {
02639
02640 if (@is_dir($a_dir."/".$file))
02641 {
02642 ilUtil::rRenameSuffix($a_dir."/".$file, $a_old_suffix, $a_new_suffix);
02643 }
02644
02645
02646 if (@is_file($a_dir."/".$file))
02647 {
02648
02649 if(strrpos($file,'.') == (strlen($file) - 1))
02650 {
02651 rename($a_dir.'/'.$file,substr($a_dir.'/'.$file,0,-1));
02652 $file = substr($file,0,-1);
02653 }
02654
02655 $path_info = pathinfo($a_dir."/".$file);
02656
02657 if (strtolower($path_info["extension"]) ==
02658 strtolower($a_old_suffix))
02659 {
02660 $pos = strrpos($a_dir."/".$file, ".");
02661 $new_name = substr($a_dir."/".$file, 0, $pos).".".$a_new_suffix;
02662 rename($a_dir."/".$file, $new_name);
02663 }
02664 }
02665 }
02666 }
02667 return true;
02668 }
02669
02670 function isAPICall () {
02671 return strpos($_SERVER["SCRIPT_FILENAME"],"api") !== false ||
02672 strpos($_SERVER["SCRIPT_FILENAME"],"dummy") !== false;
02673 }
02674
02675 function KT_replaceParam($qstring, $paramName, $paramValue) {
02676 if (preg_match("/&" . $paramName . "=/", $qstring)) {
02677 return preg_replace("/&" . $paramName . "=[^&]+/", "&" . $paramName . "=" . urlencode($paramValue), $qstring);
02678 } else {
02679 return $qstring . "&" . $paramName . "=" . urlencode($paramValue);
02680 }
02681 }
02682
02683 function replaceUrlParameterString ($url, $parametersArray) {
02684
02685 foreach ($parametersArray as $paramName => $paramValue ) {
02686 $url = ilUtil::KT_replaceParam($url, $paramName, $paramValue);
02687 }
02688 return $url;
02689 }
02690
02691 function generatePasswords ($a_number)
02692 {
02693 $ret = array();
02694 srand((double) microtime()*1000000);
02695
02696 for ($i=1; $i<=$a_number; $i++)
02697 {
02698 $length = rand(6,10);
02699 $next = rand(1,2);
02700
02701 $vowels = "aeiou";
02702 $consonants = "bcdfghjklmnpqrstvwxyz";
02703 $pw = "";
02704
02705 for ($j=0; $j < $length; $j++)
02706 {
02707 switch ($next)
02708 {
02709 case 1:
02710 $pw.= $consonants[rand(0,strlen($consonants)-1)];
02711 $next = 2;
02712 break;
02713
02714 case 2:
02715 $pw.= $vowels[rand(0,strlen($vowels)-1)];
02716 $next = 1;
02717 break;
02718 }
02719 }
02720
02721 $ret[] = $pw;
02722 }
02723
02724 return $ret;
02725 }
02726
02727 function removeTrailingPathSeparators($path)
02728 {
02729 $path = preg_replace("/[\/\\\]+$/", "", $path);
02730 return $path;
02731 }
02732
02741 function array_php2js($data)
02742 {
02743 if (empty($data))
02744 {
02745 $data = array();
02746 }
02747
02748 foreach($data as $k=>$datum)
02749 {
02750 if(is_null($datum)) $data[$k] = 'null';
02751 if(is_string($datum)) $data[$k] = "'" . $datum . "'";
02752 if(is_array($datum)) $data[$k] = array_php2js($datum);
02753 }
02754
02755 return "[" . implode(', ', $data) . "]";
02756 }
02757
02762 function virusHandling($a_file, $a_orig_name = "", $a_clean = true)
02763 {
02764 global $lng;
02765
02766 if (IL_VIRUS_SCANNER != "None")
02767 {
02768 require_once("classes/class.ilVirusScannerFactory.php");
02769 $vs = ilVirusScannerFactory::_getInstance();
02770 if (($vs_txt = $vs->scanFile($a_file, $a_orig_name)) != "")
02771 {
02772 if ($a_clean && (IL_VIRUS_CLEAN_COMMAND != ""))
02773 {
02774 $clean_txt = $vs->cleanFile($a_file, $a_orig_name);
02775 if ($vs->fileCleaned())
02776 {
02777 $vs_txt.= "<br />".$lng->txt("cleaned_file").
02778 "<br />".$clean_txt;
02779 $vs_txt.= "<br />".$lng->txt("repeat_scan");
02780 if (($vs2_txt = $vs->scanFile($a_file, $a_orig_name)) != "")
02781 {
02782 return array(false, nl2br($vs_txt)."<br />".$lng->txt("repeat_scan_failed").
02783 "<br />".nl2br($vs2_txt));
02784 }
02785 else
02786 {
02787 return array(true, nl2br($vs_txt)."<br />".$lng->txt("repeat_scan_succeded"));
02788 }
02789 }
02790 else
02791 {
02792 return array(false, nl2br($vs_txt)."<br />".$lng->txt("cleaning_failed"));
02793 }
02794 }
02795 else
02796 {
02797 return array(false, nl2br($vs_txt));
02798 }
02799 }
02800 }
02801 return array(true,"");
02802 }
02803
02804
02808 function moveUploadedFile($a_file, $a_name, $a_target, $a_raise_errors = true)
02809 {
02810 global $lng, $ilias;
02811
02812 if (!is_file($a_file))
02813 {
02814 $lng->txt("upload_error_file_not_found");
02815 }
02816
02817
02818 $vir = ilUtil::virusHandling($a_file, $a_name);
02819 if (!$vir[0])
02820 {
02821 unlink($a_file);
02822 if ($a_raise_errors)
02823 {
02824 $ilias->raiseError($lng->txt("file_is_infected")."<br />".
02825 $vir[1],
02826 $ilias->error_obj->MESSAGE);
02827 }
02828 else
02829 {
02830 sendInfo($lng->txt("file_is_infected")."<br />".
02831 $vir[1], true);
02832 }
02833 return false;
02834 }
02835 else
02836 {
02837 if ($vir[1] != "")
02838 {
02839 sendInfo($vir[1], true);
02840 }
02841 return move_uploaded_file($a_file, $a_target);
02842 }
02843 }
02844
02845
02849 function date_mysql2time($mysql_date_time) {
02850 list($datum, $uhrzeit) = explode (" ",$mysql_date_time);
02851 list($jahr, $monat, $tag) = explode("-", $datum);
02852 list($std, $min, $sec) = explode(":", $uhrzeit);
02853 return mktime ((int) $std, (int) $min, (int) $sec, (int) $monat, (int) $tag, (int) $jahr);
02854 }
02855
02869 function &processCSVRow(&$row, $quoteAll = FALSE, $separator = ";", $outUTF8 = FALSE, $compatibleWithMSExcel = TRUE)
02870 {
02871 $resultarray = array();
02872 foreach ($row as $rowindex => $entry)
02873 {
02874 $surround = FALSE;
02875 if ($quoteAll)
02876 {
02877 $surround = TRUE;
02878 }
02879 if (strpos($entry, "\"") !== FALSE)
02880 {
02881 $entry = str_replace("\"", "\"\"", $entry);
02882 $surround = TRUE;
02883 }
02884 if (strpos($entry, $separator) !== FALSE)
02885 {
02886 $surround = TRUE;
02887 }
02888 if ($compatibleWithMSExcel)
02889 {
02890
02891 $entry = str_replace(chr(13).chr(10), chr(10), $entry);
02892 }
02893 if ($surround)
02894 {
02895 if ($outUTF8)
02896 {
02897 $resultarray[$rowindex] = "\"" . $entry . "\"";
02898 }
02899 else
02900 {
02901 $resultarray[$rowindex] = utf8_decode("\"" . $entry . "\"");
02902 }
02903 }
02904 else
02905 {
02906 if ($outUTF8)
02907 {
02908 $resultarray[$rowindex] = $entry;
02909 }
02910 else
02911 {
02912 $resultarray[$rowindex] = utf8_decode($entry);
02913 }
02914 }
02915 }
02916 return $resultarray;
02917 }
02918
02919
02920 function isDN($a_str)
02921 {
02922 return(preg_match("/^[a-z]+([a-z0-9-]*[a-z0-9]+)?(\.([a-z]+([a-z0-9-]*[a-z0-9]+)?)+)*$/",$a_str));
02923 }
02924
02925
02926 function isIPv4($a_str)
02927 {
02928 return(preg_match("/^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.".
02929 "(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$/",$a_str));
02930 }
02931
02932
02959 function _getObjectsByOperations($a_obj_type,$a_operation,$a_usr_id = 0,$limit = 0)
02960 {
02961 global $ilDB,$rbacreview,$ilAccess,$ilUser,$ilias;
02962
02963 if(!is_array($a_obj_type))
02964 {
02965 $where = "WHERE type = '".$a_obj_type."' ";
02966 }
02967 else
02968 {
02969 $where = "WHERE type IN('";
02970 $where .= implode("','",$a_obj_type);
02971 $where .= "') ";
02972 }
02973
02974
02975
02976 if(!$limit)
02977 {
02978 $limit = $ilias->getSetting('search_max_hits',100);
02979 }
02980 if($limit = -1)
02981 {
02982 $limit = 10000;
02983 }
02984
02985
02986 $a_usr_id = $a_usr_id ? $a_usr_id : $ilUser->getId();
02987 $a_roles = $rbacreview->assignedRoles($a_usr_id);
02988
02989
02990
02991 if($rbacreview->isAssigned($a_usr_id,SYSTEM_ROLE_ID))
02992 {
02993 $query = "SELECT ref_id FROM object_reference AS obr LEFT JOIN object_data AS obd USING(obj_id) ".
02994 "LEFT JOIN tree ON obr.ref_id = tree.child ".
02995 $where.
02996 "AND tree = 1";
02997
02998 $res = $ilDB->query($query);
02999 $counter = 0;
03000 while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
03001 {
03002 if(++$counter == $limit)
03003 {
03004 break;
03005 }
03006 $ref_ids[] = $row->ref_id;
03007 }
03008 return $ref_ids ? $ref_ids : array();
03009 }
03010
03011 $ops_ids = ilRbacReview::_getOperationIdsByName(array($a_operation));
03012 $ops_id = $ops_ids[0];
03013
03014 $query = "SELECT DISTINCT(obr.ref_id),obr.obj_id,type FROM rbac_pa ".
03015 "LEFT JOIN object_reference AS obr ON obr.ref_id = rbac_pa.ref_id ".
03016 "LEFT JOIN object_data AS obd ON obd.obj_id = obr.obj_id ".
03017 $where.
03018 "AND ops_id LIKE '%i:".$ops_id."%'";
03019 $res = $ilDB->query($query);
03020 $counter = 0;
03021 while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
03022 {
03023 if($counter >= $limit)
03024 {
03025 break;
03026 }
03027
03028 if($ilAccess->checkAccessOfUser($a_usr_id,$a_operation,'',$row->ref_id,$row->type,$row->obj_id))
03029 {
03030 $counter++;
03031 $ref_ids[] = $row->ref_id;
03032 }
03033 }
03034 return $ref_ids ? $ref_ids : array();
03035 }
03036
03043 function insertLatexImages($a_text, $a_start = "\[tex\]", $a_end = "\[\/tex\]", $a_cgi = URL_TO_LATEX)
03044 {
03045
03046 $result_text = preg_replace('/' . $a_start . '(.*?)' . $a_end . '/ie',
03047 "'<img alt=\"'.htmlentities('$1').'\" src=\"$a_cgi?'.rawurlencode(str_replace('&', '&', str_replace('>', '>', str_replace('<', '<', '$1')))).'\" ".
03048 " />'", $a_text);
03049 return $result_text;
03050 }
03051
03058 function buildLatexImages($a_text, $a_dir ,$a_start = "\[tex\]", $a_end = "\[\/tex\]", $a_cgi = URL_TO_LATEX)
03059 {
03060 $result_text = $a_text;
03061
03062 if ($a_cgi != "")
03063 {
03064 while (preg_match('/' . $a_start . '(.*?)' . $a_end . '/ie', $result_text, $found))
03065 {
03066 $cnt = (int) $GLOBALS["teximgcnt"]++;
03067
03068 $fpr = fopen($a_cgi."?".rawurlencode($found[1]), "r");
03069 $lcnt = 0;
03070 while(!feof($fpr))
03071 {
03072 $buf = fread($fpr, 1024);
03073 if ($lcnt == 0)
03074 {
03075 if (is_int(strpos(strtoupper(substr($buf, 0, 5)), "GIF")))
03076 {
03077 $suffix = "gif";
03078 }
03079 else
03080 {
03081 $suffix = "png";
03082 }
03083 $fpw = fopen($a_dir."/teximg/img".$cnt.".".$suffix, "w");
03084 }
03085 $lcnt++;
03086 fwrite($fpw, $buf);
03087 }
03088 fclose($fpw);
03089 fclose($fpr);
03090
03091
03092 $img_str = "./teximg/img".$cnt.".".$suffix;
03093 $result_text = str_replace($found[0],
03094 '<img alt="'.$found[1].'" src="'.$img_str.'" />', $result_text);
03095
03096 }
03097 }
03098
03099 return $result_text;
03100 }
03101
03108 function int2array ($seconds, $periods = null)
03109 {
03110
03111 if (!is_array($periods))
03112 {
03113 $periods = array (
03114 'years' => 31536000,
03115 'months' => 2592000,
03116 'days' => 86400,
03117 'hours' => 3600,
03118 'minutes' => 60,
03119 'seconds' => 1
03120 );
03121 }
03122
03123
03124 $seconds = (float) $seconds;
03125 foreach ($periods as $period => $value)
03126 {
03127 $count = floor($seconds / $value);
03128
03129 if ($count == 0)
03130 {
03131 continue;
03132 }
03133
03134 $values[$period] = $count;
03135 $seconds = $seconds % $value;
03136 }
03137
03138 if (empty($values))
03139 {
03140 $values = null;
03141 }
03142
03143 return $values;
03144 }
03145
03153 function timearray2string ($duration)
03154 {
03155 global $lng;
03156
03157 if (!is_array($duration))
03158 {
03159 return false;
03160 }
03161
03162 foreach ($duration as $key => $value) {
03163
03164
03165 if ($value > 1)
03166 {
03167 $segment_name = $key;
03168 $segment_name = $lng->txt($segment_name);
03169 $segment = $value . ' ' . $segment_name;
03170 }
03171 else
03172 {
03173 $segment_name = substr($key, 0, -1);
03174 $segment_name = $lng->txt($segment_name);
03175 $segment = $value . ' ' . $segment_name;
03176 }
03177
03178 $array[] = $segment;
03179 }
03180 $len = count($array);
03181
03182 if ($len>3)
03183 {
03184 $array=array_slice($array,0,(3-$len));
03185 }
03186
03187 $str = implode(', ', $array);
03188
03189 return $str;
03190 }
03191
03192 function getFileSizeInfo()
03193 {
03194 global $lng;
03195
03196
03197 $umf=get_cfg_var("upload_max_filesize");
03198
03199 $pms=get_cfg_var("post_max_size");
03200
03201
03202 $max_filesize=min($umf, $pms);
03203 if (!$max_filesize) $max_filesize=max($umf, $pms);
03204
03205 return $lng->txt("file_notice")." $max_filesize.";
03206 }
03207
03214 function __extractRefId($role_title)
03215 {
03216
03217 $test_str = explode('_',$role_title);
03218
03219 if ($test_str[0] == 'il')
03220 {
03221 $test2 = (int) $test_str[3];
03222 return is_numeric ($test2) ? (int) $test2 : false;
03223 }
03224 return false;
03225 }
03226
03236 function __extractId($ilias_id, $inst_id)
03237 {
03238
03239 $test_str = explode('_',$ilias_id);
03240
03241 if ($test_str[0] == 'il' && $test_str[1] == $inst_id && count($test_str) == 4)
03242 {
03243 $test2 = (int) $test_str[3];
03244 return is_numeric ($test2) ? (int) $test2 : false;
03245 }
03246 return false;
03247 }
03248
03261 function _sortIds($a_ids,$a_table,$a_field,$a_id_name)
03262 {
03263 global $ilDB;
03264
03265 if(!$a_ids)
03266 {
03267 return array();
03268 }
03269
03270
03271 $where = "WHERE ".$a_id_name." IN ('";
03272 $where .= implode("','",$a_ids);
03273 $where .= "') ";
03274
03275 $query = "SELECT ".$a_id_name." FROM ".$a_table." ".
03276 $where.
03277 "ORDER BY ".$a_field;
03278
03279 $res = $ilDB->query($query);
03280 while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
03281 {
03282 $ids[] = $row->$a_id_name;
03283 }
03284 return $ids ? $ids : array();
03285 }
03286
03294 function getMySQLTimestamp($a_ts)
03295 {
03296 global $ilDB;
03297
03298 if ($ilDB->isMysql4_1OrHigher())
03299 {
03300 return $a_ts;
03301 }
03302 else
03303 {
03304 $t = $a_ts;
03305 $ts = substr($t, 0, 4)."-".substr($t, 4, 2)."-".substr($t, 6, 2).
03306 " ".substr($t, 8, 2).":".substr($t, 10, 2).":".substr($t, 12, 2);
03307 return $ts;
03308 }
03309 }
03310
03311 }
03312
03313
03314 ?>
