"http://www.brianjaystanley.com/LIS/apps/rubiayat.xml",
"tyger"=>"http://www.brianjaystanley.com/LIS/apps/tyger.xml",
"leda"=>"http://www.brianjaystanley.com/LIS/apps/leda.xml",
"sorrow"=>"http://www.brianjaystanley.com/LIS/apps/sorrow.xml");
//retrieve the appropriate filepath from the dictionary.
$file = $poemdict[$poem];
//This function, which only executes if highlighting is on, gets the lines of the stanza making
//the call and returns them as an array, for comparison with the stanzas being retrieved.
function getLines($file,$version,$ID) {
$lines = array(); //initialize array for storing lines
$reader = new XMLReader(); //initialize reader
$reader->open($file); //open file
//move forward through the document, looking for the correct docEdition element node.
while ($reader->read()) {
if ($reader->nodeType == XMLReader::ELEMENT
&& $reader->localName == "docEdition") {
$reader->read();
if ($reader->value == $version) {
//start moving forward again; look for the lg element node with the correct
//n attribute value.
while ($reader->read()) {
if ($reader->nodeType == XMLReader::ELEMENT
&& $reader->localName == "lg") {
if ($reader->getAttribute("n") == $ID) {
//then add the lines to an array.
while ($reader->read()) {
if ($reader->nodeType == XMLReader::ELEMENT
&& $reader->localName == "l") {
$reader->read();
$lines[] = $reader->value;
}
//break loop at lg end tag.
elseif ($reader->nodeType == XMLReader::END_ELEMENT
&& $reader->localName == "lg") {
break;
}
}
}
}
//break loop at text end tag (signaling end of version)
elseif ($reader->nodeType == XMLReader::END_ELEMENT
&& $reader->localName == "text") {
break;
}
}
}
}
}
return $lines;
}
//This function retrieves the stanzas in other editions corresponding to the stanza making the call.
function getStanzas($file,$poem,$version,$divID,$highlight) {
//call the getLines function if highlighting is set to on.
if ($highlight == "true") {
$lines = getLines($file,$version,$divID);
}
$reader = new XMLReader(); //initialize reader
$reader->open($file); //open file
//output a button to call the javascript hideStanzas function
echo '';
//move forward through the document, looking for the docEdition element node. For each,
//if it's not the version calling the function, continue executing the function.
while ($reader->read()) {
if ($reader->nodeType == XMLReader::ELEMENT
&& $reader->localName == "docEdition") {
$reader->read();
if ($reader->value != $version) {
$thisversion = $reader->value;
$foundmatch = "false"; //initialize $foundmatch variable to false.
//start moving forward again; look for lg element node, grab its n //attribute value, and start building div boxes
while ($reader->read()) {
if ($reader->nodeType == XMLReader::ELEMENT
&& $reader->localName == "lg") {
$stanzaID = $reader->getAttribute("n");
if ($stanzaID == $divID) {
$foundmatch = "true"; //change $foundmatch variable to true
echo '
' . $thisversion . '
';
while ($reader->read()) {
if ($reader->nodeType == XMLReader::ELEMENT
&& $reader->localName == "head") {
$reader->read();
echo "
stanza " . $reader->value . "
";
}
//if highlighting is off, out the line as is.
elseif ($reader->nodeType == XMLReader::ELEMENT
&& $reader->localName == "l" && $highlight == "false") {
$reader->read();
echo $reader->value . " ";
}
//if highlighting is on, compare the line to the corresponding
//line in the $lines array, and if it is different, wrap the
//output line in a span tag for highlighting.
elseif ($reader->nodeType == XMLReader::ELEMENT
&& $reader->localName == "l" && $highlight == "true") {
$linenumber = $reader->getAttribute("n");
$reader->read();
$thisline = $reader->value;
if ($thisline == $lines[($linenumber - 1)]) {
echo $thisline . " ";
}
else {
echo '' . $thisline . ' ';
}
}
//break the loop at the lg end tag.
elseif ($reader->nodeType == XMLReader::END_ELEMENT
&& $reader->localName == "lg") {
echo "
";
break;
}
}
}
}
//at text end tag (signaling end of version), print message if no stanza
//match was found, and break loop.
elseif ($reader->nodeType == XMLReader::END_ELEMENT
&& $reader->localName == "text") {
if ($foundmatch == "false") {
echo '