mod/lesson/reformat.php

   1 <?php // $Id$
   2 /**
   3  * jjg7:8/9/2004
   4  *
   5  * @version $Id$
   6  * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   7  * @package lesson
   8  **/
   9
  10 function removedoublecr($filename) {
  11 // This function will adjust a file in roughly Aiken style by replacing extra newlines with <br/> tags
  12 // so that instructors can have newlines wherever they like as long as the overall format is in Aiken
  13
  14     $filearray = file($filename);
  15     /// Check for Macintosh OS line returns (ie file on one line), and fix
  16     if (ereg("\r", $filearray[0]) AND !ereg("\n", $filearray[0])) {
  17         $outfile = explode("\r", $filearray[0]);
  18     } else {
  19         $outfile = $filearray;
  20     }
  21
  22     foreach ($outfile as $line) {
  23         // remove leading and trailing whitespace
  24         trim($line);
  25         // check it's length, if 0 do not output... if it is > 0 output
  26         if ($line[0] == "\n" OR strlen($line)==0 ) {
  27             if (count($outarray) ) {
  28                 // get the last item in the outarray
  29                 $cur_pos = (count($outarray) - 1);
  30                 $outarray[$cur_pos] = trim($outarray[$cur_pos])."<br/>\n";
  31             }
  32         }
  33         else {
  34             $length=strlen($line);
  35             if ($length==0) {
  36                 // don't do anything
  37             }
  38             else {
  39                 if ($line[$length-1] == "\n") {
  40                     $outarray[] = $line;
  41                 }
  42                 else {
  43                     $outarray[] = $line."\n";
  44                 }
  45             }
  46         }
  47     }
  48     // output modified file to original
  49     if ( is_writable($filename) ) {
  50
  51         if (! $handle =fopen ($filename ,'w' )) {
  52             echo "Cannot open file ($filename)" ;
  53             exit;
  54         }
  55         foreach ($outarray as $outline) {
  56             fwrite($handle, $outline);
  57         }
  58         fclose($handle);
  59     }
  60     else {
  61         // file not writeable
  62     }
  63 }
  64
  65 // jjg7:8/9/2004
  66 function importmodifiedaikenstyle($filename) {
  67 // This function converts from Brusca style to Aiken
  68     $lines = file($filename);
  69     $answer_found = 0;
  70     $responses = 0;
  71     $outlines = array();
  72     foreach ($lines as $line) {
  73         // strip leading and trailing whitespace
  74         $line = trim($line);
  75         // add a space at the end, quick hack to make sure words from different lines don't run together
  76         $line = $line. ' ';
  77
  78         // ignore lines less than 2 characters
  79         if (strlen($line) < 2) {
  80             continue;
  81         }
  82
  83
  84         // see if we have the answer line
  85         if ($line[0] =='*') {
  86             if ($line[0] == '*') {
  87                 $answer_found = 1;
  88                 $line[0]="\t";
  89                 $line = ltrim($line);
  90                 $answer = $line[0];
  91             }
  92         }
  93
  94         $leadin = substr($line, 0,2);
  95         if (strpos(".A)B)C)D)E)F)G)H)I)J)a)b)c)d)e)f)g)h)i)j)A.B.C.D.E.F.G.H.I.J.a.b.c.d.e.f.g.h.i.j.", $leadin)>0) {
  96
  97             // re-add newline to indicate end of previous question/response
  98             if (count($outlines)) {
  99                 $cur_pos = (count($outlines) - 1);
 100                 $outlines[$cur_pos] = $outlines[$cur_pos]."\n";
 101             }
 102
 103
 104             $responses = 1;
 105             // make character uppercase
 106             $line[0]=strtoupper($line[0]);
 107
 108             // make entry followed by '.'
 109             $line[1]='.';
 110         }
 111         elseif ( ($responses AND $answer_found) OR (count($outlines)<=1) ) {
 112         // we have found responses and an answer and the current line is not an answer
 113             switch ($line[0]) {
 114                 case 1:
 115                 case 2:
 116                 case 3:
 117                 case 4:
 118                 case 5:
 119                 case 6:
 120                 case 7:
 121                 case 8:
 122                 case 9:
 123
 124                     // re-add newline to indicate end of previous question/response
 125                     if (count($outlines)) {
 126                         $cur_pos = (count($outlines) - 1);
 127                         $outlines[$cur_pos] = $outlines[$cur_pos]."\n";
 128                     }
 129
 130                     // this next ugly block is to strip out the numbers at the beginning
 131                     $np = 0;
 132                     // this probably could be done cleaner... it escapes me at the moment
 133                     while ($line[$np] == '0' OR $line[$np] == '1' OR $line[$np] == '2'
 134                             OR $line[$np] == '3' OR $line[$np] == '4'  OR $line[$np] == '5'
 135                             OR $line[$np] == '6'  OR $line[$np] == '7' OR $line[$np] == '8'
 136                             OR $line[$np] == '9' ) {
 137                         $np++;
 138                     }
 139                     // grab everything after '###.'
 140                     $line = substr($line, $np+1, strlen($line));
 141
 142                     if ($responses AND $answer_found) {
 143                         $responses = 0;
 144                         $answer_found = 0;
 145                         $answer = strtoupper($answer);
 146                         $outlines[] = "ANSWER: $answer\n\n";
 147                     }
 148                     break;
 149             }
 150         }
 151         if (substr($line, 0, 14) == 'ANSWER CHOICES') {
 152             // don't output this line
 153         }
 154         else {
 155             $outlines[]=$line;
 156         }
 157     } // close for each line
 158
 159     // re-add newline to indicate end of previous question/response
 160     if (count($outlines)) {
 161         $cur_pos = (count($outlines) - 1);
 162         $outlines[$cur_pos] = $outlines[$cur_pos]."\n";
 163     }
 164
 165     // output the last answer
 166     $answer = strtoupper($answer);
 167     $outlines[] = "ANSWER: $answer\n\n";
 168
 169     // output modified file to original
 170     if ( is_writable($filename) ) {
 171         if (! $handle =fopen ($filename ,'w' )) {
 172             echo "Cannot open file ($filename)" ;
 173             exit;
 174         }
 175         foreach ($outlines as $outline) {
 176             fwrite($handle, $outline);
 177         }
 178         fclose($handle);
 179         return true;
 180     }
 181     else {
 182         return false;
 183     }
 184 }
 185 ?>