_leading_context_lines = $context_lines;
$this->_trailing_context_lines = $context_lines;
$this->orig = "";
$this->final = "";
}
protected function _startDiff()
{
}
protected function _endDiff()
{
return [$this->orig, $this->final];
}
protected function _blockHeader($xbeg, $xlen, $ybeg, $ylen)
{
}
protected function _startBlock($header)
{
echo $header;
}
protected function _endBlock()
{
}
protected function _lines($lines, $prefix = '', $suffix = '', $type = '')
{
if ($type == 'context') {
foreach ($lines as $line) {
$this->orig .= htmlspecialchars($line);
$this->final .= htmlspecialchars($line);
}
} elseif ($type == 'added' || $type == 'change-added') {
$l = "";
foreach ($lines as $line) {
$l .= htmlspecialchars($line);
}
if (! empty($l)) {
$this->final .= '' . $l . "";
}
} elseif ($type == 'deleted' || $type == 'change-deleted') {
$l = "";
foreach ($lines as $line) {
$l .= htmlspecialchars($line);
}
if (! empty($l)) {
$this->orig .= '' . $l . "";
}
}
}
protected function _context($lines)
{
$this->_lines($lines, '', '', 'context');
}
protected function _added($lines, $changemode = false)
{
if ($changemode) {
$this->_lines($lines, '+', '', 'change-added');
} else {
$this->_lines($lines, '+', '', 'added');
}
}
protected function _deleted($lines, $changemode = false)
{
if ($changemode) {
$this->_lines($lines, '-', '', 'change-deleted');
} else {
$this->_lines($lines, '-', '', 'deleted');
}
}
protected function _changed($orig, $final)
{
$this->_deleted($orig, true);
$this->_added($final, true);
}
}