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<?php
// jjg7:8/9/2004
function removedoublecr($filename) {
// This function will adjust a file in roughly Aiken style by replacing extra newlines with <BR> tags
// so that instructors can have newlines wherever they like as long as the overall format is in Aiken
$filearray = file($filename);
/// Check for Macintosh OS line returns (ie file on one line), and fix
if (ereg("\r", $filearray[0]) AND !ereg("\n", $filearray[0])) {
$outfile = explode("\r", $filearray[0]);
} else {
$outfile = $filearray;
}
foreach ($outfile as $line) {
// remove leading and trailing whitespace
trim($line);
// check it's length, if 0 do not output... if it is > 0 output
if ($line[0] == "\n" OR strlen($line)==0 ) {
if (count($outarray) ) {
// get the last item in the outarray
$cur_pos = (count($outarray) - 1);
$outarray[$cur_pos] = trim($outarray[$cur_pos])."<br>\n";
}
}
else {
$length=strlen($line);
if ($length==0) {
// don't do anything
}
else {
if ($line[$length-1] == "\n") {
$outarray[] = $line;
}
else {
$outarray[] = $line."\n";
}
}
}
}
// output modified file to original
if ( is_writable($filename) ) {
if (! $handle =fopen ($filename ,'w' )) {
echo "Cannot open file ($filename)" ;
exit;
}
foreach ($outarray as $outline) {
fwrite($handle, $outline);
}
fclose($handle);
}
else {
// file not writeable
}
}
// jjg7:8/9/2004
function importmodifiedaikenstyle($filename) {
// This function converts from Brusca style to Aiken
$lines = file($filename);
$answer_found = 0;
$responses = 0;
$outlines = array();
foreach ($lines as $line) {
// strip leading and trailing whitespace
$line = trim($line);
// add a space at the end, quick hack to make sure words from different lines don't run together
$line = $line. ' ';
// ignore lines less than 2 characters
if (strlen($line) < 2) {
continue;
}
// see if we have the answer line
if ($line[0] =='*') {
if ($line[0] == '*') {
$answer_found = 1;
$line[0]="\t";
$line = ltrim($line);
$answer = $line[0];
}
}
$leadin = substr($line, 0,2);
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.", $leadin)>0) {
// re-add newline to indicate end of previous question/response
if (count($outlines)) {
$cur_pos = (count($outlines) - 1);
$outlines[$cur_pos] = $outlines[$cur_pos]."\n";
}
$responses = 1;
// make character uppercase
$line[0]=strtoupper($line[0]);
// make entry followed by '.'
$line[1]='.';
}
elseif ( ($responses AND $answer_found) OR (count(outlines)<=1) ) {
// we have found responses and an answer and the current line is not an answer
switch ($line[0]) {
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
// re-add newline to indicate end of previous question/response
if (count($outlines)) {
$cur_pos = (count($outlines) - 1);
$outlines[$cur_pos] = $outlines[$cur_pos]."\n";
}
// this next ugly block is to strip out the numbers at the beginning
$np = 0;
// this probably could be done cleaner... it escapes me at the moment
while ($line[$np] == '0' OR $line[$np] == '1' OR $line[$np] == '2'
OR $line[$np] == '3' OR $line[$np] == '4' OR $line[$np] == '5'
OR $line[$np] == '6' OR $line[$np] == '7' OR $line[$np] == '8'
OR $line[$np] == '9' ) {
$np++;
}
// grab everything after '###.'
$line = substr($line, $np+1, strlen($line));
if ($responses AND $answer_found) {
$responses = 0;
$answer_found = 0;
$answer = strtoupper($answer);
$outlines[] = "ANSWER: $answer\n\n";
}
break;
}
}
if (substr($line, 0, 14) == 'ANSWER CHOICES') {
// don't output this line
}
else {
$outlines[]=$line;
}
} // close for each line
// re-add newline to indicate end of previous question/response
if (count($outlines)) {
$cur_pos = (count($outlines) - 1);
$outlines[$cur_pos] = $outlines[$cur_pos]."\n";
}
// output the last answer
$answer = strtoupper($answer);
$outlines[] = "ANSWER: $answer\n\n";
// output modified file to original
if ( is_writable($filename) ) {
if (! $handle =fopen ($filename ,'w' )) {
echo "Cannot open file ($filename)" ;
exit;
}
foreach ($outlines as $outline) {
fwrite($handle, $outline);
}
fclose($handle);
return true;
}
else {
return false;
}
}
?>
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