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<?php
class MoveBuilder
{
private $moves = array();
private $moveReferences = array();
private $pointer = 0;
private $currentIndex = 0;
public function __construct()
{
$this->moveReferences[0] =& $this->moves;
}
public function addMoves($moveString)
{
$moves = explode(" ", $moveString);
foreach ($moves as $move) {
$this->addMove($move);
}
}
private function addMove($move)
{
if (!$this->isChessMove($move)) {
return;
}
$move = preg_replace("/^([a-h])([18])([QRNB])$/", "$1$2=$3", $move);
$this->moveReferences[$this->pointer][] = array(CHESS_JSON::MOVE_NOTATION => $move);
$this->currentIndex++;
}
private function isChessMove($move)
{
if ($move == '--') return true;
return preg_match("/([PNBRQK]?[a-h]?[1-8]?x?[a-h][1-8](?:\=[PNBRQK])?|O(-?O){1,2})[\+#]?(\s*[\!\?]+)?/s", $move);
}
public function addCommentBeforeFirstMove($comment)
{
$comment = trim($comment);
if (!strlen($comment)) {
return;
}
$this->moveReferences[$this->pointer][] = array();
$this->addComment($comment);
}
public function addComment($comment)
{
$comment = trim($comment);
if (!strlen($comment)) {
return;
}
#$index = max(0,count($this->moveReferences[$this->pointer])-1);
$index = count($this->moveReferences[$this->pointer]) - 1;
if (strstr($comment, '[%clk')) {
$clk = preg_replace('/\[%clk[^0-9]*?([0-9\:]+?)[\]]/si', '$1', $comment);
$comment = str_replace('[%clk ' . $clk . ']', '', $comment);
$this->moveReferences[$this->pointer][$index][CHESS_JSON::MOVE_CLOCK] = $clk;
}
$actions = $this->getActions($comment);
if (!empty($actions)) {
if (empty($this->moveReferences[$this->pointer][$index][CHESS_JSON::MOVE_ACTIONS])) {
$this->moveReferences[$this->pointer][$index][CHESS_JSON::MOVE_ACTIONS] = array();
}
foreach ($actions as $action) {
$this->moveReferences[$this->pointer][$index][CHESS_JSON::MOVE_ACTIONS][] = $action;
}
}
$comment = preg_replace('/\[%' . CHESS_JSON::PGN_KEY_ACTION_ARROW . '[^\]]+?\]/si', '', $comment);
$comment = preg_replace('/\[%' . CHESS_JSON::PGN_KEY_ACTION_CLR_ARROW . '[^\]]+?\]/si', '', $comment);
$comment = preg_replace('/\[%' . CHESS_JSON::PGN_KEY_ACTION_HIGHLIGHT . '[^\]]+?\]/si', '', $comment);
$comment = preg_replace('/\[%' . CHESS_JSON::PGN_KEY_ACTION_CLR_HIGHLIGHT . '[^\]]+?\]/si', '', $comment);
$comment = trim($comment);
if (empty($comment)) return;
if ($index === -1) {
$index = 0;
$this->moveReferences[$this->pointer][$index][CHESS_JSON::MOVE_COMMENT] = $comment;
$this->currentIndex++;
} else {
$this->moveReferences[$this->pointer][$index][CHESS_JSON::MOVE_COMMENT] = $comment;
}
}
private function getActions($comment)
{
$ret = array();
if (strstr($comment, '[%' . CHESS_JSON::PGN_KEY_ACTION_ARROW)) {
$arrow = preg_replace('/.*?\[%' . CHESS_JSON::PGN_KEY_ACTION_ARROW . ' ([^\]]+?)\].*/si', '$1', $comment);
$arrows = explode(",", $arrow);
foreach ($arrows as $arrow) {
$tokens = explode(";", $arrow);
if (strlen($tokens[0]) == 4) {
$action = array(
"from" => substr($arrow, 0, 2),
"to" => substr($arrow, 2, 2)
);
if (count($tokens) > 1) {
$action["color"] = $tokens[1];
}
$ret[] = $this->toAction("arrow", $action);
}
}
}
if (strstr($comment, '[%' . CHESS_JSON::PGN_KEY_ACTION_CLR_ARROW)) {
$arrow = preg_replace('/.*?\[%' . CHESS_JSON::PGN_KEY_ACTION_CLR_ARROW . ' ([^\]]+?)\].*/si', '$1', $comment);
$arrows = explode(",", $arrow);
foreach ($arrows as $arrow) {
$len = strlen($arrow);
$color = "G";
if ($len === 5) {
$color = substr($arrow, 0, 1);
$arrow = substr($arrow, 1);
}
if (strlen($arrow) === 4) {
$action = array(
"from" => substr($arrow, 0, 2),
"to" => substr($arrow, 2, 2)
);
$action["color"] = $color;
$ret[] = $this->toAction("arrow", $action);
}
}
}
if (strstr($comment, '[%' . CHESS_JSON::PGN_KEY_ACTION_HIGHLIGHT)) {
$arrow = preg_replace('/.*?\[%' . CHESS_JSON::PGN_KEY_ACTION_HIGHLIGHT . ' ([^\]]+?)\].*/si', '$1', $comment);
$arrows = explode(",", $arrow);
foreach ($arrows as $arrow) {
$tokens = explode(";", $arrow);
if (strlen($tokens[0]) == 2) {
$action = array(
"square" => substr($arrow, 0, 2)
);
if (count($tokens) > 1) {
$action["color"] = $tokens[1];
}
$ret[] = $this->toAction("highlight", $action);
}
}
}
if (strstr($comment, '[%' . CHESS_JSON::PGN_KEY_ACTION_CLR_HIGHLIGHT)) {
$arrow = preg_replace('/.*?\[%' . CHESS_JSON::PGN_KEY_ACTION_CLR_HIGHLIGHT . ' ([^\]]+?)\].*/si', '$1', $comment);
$arrows = explode(",", $arrow);
foreach ($arrows as $arrow) {
$color = "G";
if (strlen($arrow) === 3) {
$color = substr($arrow, 0, 1);
$arrow = substr($arrow, 1);
}
if (strlen($arrow) === 2) {
$action = array(
"square" => substr($arrow, 0, 2)
);
$action["color"] = $color;
$ret[] = $this->toAction("highlight", $action);
}
}
}
return $ret;
}
/**
* @param string $key
* @param array $val
*
* @return array
*/
private function toAction($key, $val)
{
$val["type"] = $key;
return $val;
}
public function startVariation()
{
$index = count($this->moveReferences[$this->pointer]) - 1;
if (!isset($this->moveReferences[$this->pointer][$index][CHESS_JSON::MOVE_VARIATIONS])) {
$this->moveReferences[$this->pointer][$index][CHESS_JSON::MOVE_VARIATIONS] = array();
}
$countVariations = count($this->moveReferences[$this->pointer][$index][CHESS_JSON::MOVE_VARIATIONS]);
$this->moveReferences[$this->pointer][$index][CHESS_JSON::MOVE_VARIATIONS][$countVariations] = array();
$this->moveReferences[] =& $this->moveReferences[$this->pointer][$index][CHESS_JSON::MOVE_VARIATIONS][$countVariations];
$this->pointer++;
}
public function endVariation()
{
array_pop($this->moveReferences);
$this->pointer--;
}
public function getMoves()
{
return $this->moves;
}
}