_leading_context_lines = $context_lines;
$this->_trailing_context_lines = $context_lines;
$this->_words = $words;
}
protected function _startDiff()
{
ob_start();
$this->original = [];
$this->final = [];
$this->n = 0;
$this->rspan = false;
$this->lspan = false;
//$this->tracked_tags = array ("table","ul","div");
$this->tracked_tags = ["table", "ul"];
}
protected function _endDiff()
{
for ($i = 0; $i <= $this->n; $i++) {
if ($this->original[$i] != "" and $this->final[$i] != "") {
echo "| " . $this->original[$i] . " | " . $this->final[$i] . " |
\n";
}
}
//echo '';
$val = ob_get_contents();
ob_end_clean();
return $val;
}
protected function _blockHeader($xbeg, $xlen, $ybeg, $ylen)
{
return "$xbeg,$xlen,$ybeg,$ylen";
}
protected function _startBlock($header)
{
}
protected function _endBlock()
{
}
protected function _insert_tag($line, $tag, &$span)
{
$string = "";
if ($line != '') {
if (strstr($line, "<") === false) {
if ($span === false) {
$string .= "";
$span = true;
}
$string .= $line;
} else {
if ($span === true) {
$string .= "";
$span = false;
}
if (strstr($line, "class=") === false) {
$string .= preg_replace("#<([^/> ]+)(.*[^/]?)?>#", "<$1 class='$tag' $2>", $line);
$string = preg_replace("#
#", "↵
", $string);
} else {
$string .= preg_replace("#<([^/> ]+)(.*)class=[\"']?([^\"']+)[\"']?(.*[^/]?)?>#", "<$1$2 class='$3 $tag' $4>", $line);
}
}
}
return $string;
}
protected function _count_tags($line, $version)
{
preg_match("#<(/?)([^ >]+)#", $line, $out);
if (count($out) > 1 && in_array($out[2], $this->tracked_tags)) {
if (isset($this->tags[$version][$out[2]])) {
if ($out[1] == '/') {
$this->tags[$version][$out[2]]--;
} else {
$this->tags[$version][$out[2]]++;
}
}
}
}
protected function _can_break($line)
{
if (preg_match("#<(p|h\d|br)#", $line) == 0) {
return false;
}
if (isset($this->tags)) {
foreach ($this->tags as $v) {
foreach ($v as $tag) {
if ($tag != 0) {
return false;
}
}
}
}
return true;
}
protected function _lines($lines, $prefix = '', $suffix = '', $type = '')
{
static $context = 0;
switch ($type) {
case 'context':
foreach ($lines as $line) {
if ($context == 0 and $this->_can_break($line)) {
$context = 1;
$this->n++;
}
$this->_count_tags($line, 'original');
$this->_count_tags($line, 'final');
if ($this->lspan === true) {
$this->original[$this->n] .= "";
$this->lspan = false;
}
if ($this->rspan === true) {
$this->final[$this->n] .= "";
$this->rspan = false;
}
if (! isset($this->original[$this->n])) {
$this->original[$this->n] = '';
}
$this->original[$this->n] .= "$line";
if (! isset($this->final[$this->n])) {
$this->final[$this->n] = '';
}
$this->final[$this->n] .= "$line";
}
break;
case 'change-added':
case 'added':
foreach ($lines as $line) {
if ($line != '') {
$this->_count_tags($line, 'final');
$this->final[$this->n] .= $this->_insert_tag($line, 'diffadded', $this->rspan);
$context = 0;
}
}
break;
case 'deleted':
case 'change-deleted':
foreach ($lines as $line) {
if ($line != '') {
$this->_count_tags($line, 'original');
$this->original[$this->n] .= $this->_insert_tag($line, 'diffdeleted', $this->lspan);
$context = 0;
}
}
break;
}
}
protected function _context($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);
}
}