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<?php
namespace dokuwiki\Parsing\Handler;
class Table extends AbstractRewriter
{
protected $tableCalls = array();
protected $maxCols = 0;
protected $maxRows = 1;
protected $currentCols = 0;
protected $firstCell = false;
protected $lastCellType = 'tablecell';
protected $inTableHead = true;
protected $currentRow = array('tableheader' => 0, 'tablecell' => 0);
protected $countTableHeadRows = 0;
/** @inheritdoc */
public function finalise()
{
$last_call = end($this->calls);
$this->writeCall(array('table_end',array(), $last_call[2]));
$this->process();
$this->callWriter->finalise();
unset($this->callWriter);
}
/** @inheritdoc */
public function process()
{
foreach ($this->calls as $call) {
switch ($call[0]) {
case 'table_start':
$this->tableStart($call);
break;
case 'table_row':
$this->tableRowClose($call);
$this->tableRowOpen(array('tablerow_open',$call[1],$call[2]));
break;
case 'tableheader':
case 'tablecell':
$this->tableCell($call);
break;
case 'table_end':
$this->tableRowClose($call);
$this->tableEnd($call);
break;
default:
$this->tableDefault($call);
break;
}
}
$this->callWriter->writeCalls($this->tableCalls);
return $this->callWriter;
}
protected function tableStart($call)
{
$this->tableCalls[] = array('table_open',$call[1],$call[2]);
$this->tableCalls[] = array('tablerow_open',array(),$call[2]);
$this->firstCell = true;
}
protected function tableEnd($call)
{
$this->tableCalls[] = array('table_close',$call[1],$call[2]);
$this->finalizeTable();
}
protected function tableRowOpen($call)
{
$this->tableCalls[] = $call;
$this->currentCols = 0;
$this->firstCell = true;
$this->lastCellType = 'tablecell';
$this->maxRows++;
if ($this->inTableHead) {
$this->currentRow = array('tablecell' => 0, 'tableheader' => 0);
}
}
protected function tableRowClose($call)
{
if ($this->inTableHead && ($this->inTableHead = $this->isTableHeadRow())) {
$this->countTableHeadRows++;
}
// Strip off final cell opening and anything after it
while ($discard = array_pop($this->tableCalls)) {
if ($discard[0] == 'tablecell_open' || $discard[0] == 'tableheader_open') {
break;
}
if (!empty($this->currentRow[$discard[0]])) {
$this->currentRow[$discard[0]]--;
}
}
$this->tableCalls[] = array('tablerow_close', array(), $call[2]);
if ($this->currentCols > $this->maxCols) {
$this->maxCols = $this->currentCols;
}
}
protected function isTableHeadRow()
{
$td = $this->currentRow['tablecell'];
$th = $this->currentRow['tableheader'];
if (!$th || $td > 2) return false;
if (2*$td > $th) return false;
return true;
}
protected function tableCell($call)
{
if ($this->inTableHead) {
$this->currentRow[$call[0]]++;
}
if (!$this->firstCell) {
// Increase the span
$lastCall = end($this->tableCalls);
// A cell call which follows an open cell means an empty cell so span
if ($lastCall[0] == 'tablecell_open' || $lastCall[0] == 'tableheader_open') {
$this->tableCalls[] = array('colspan',array(),$call[2]);
}
$this->tableCalls[] = array($this->lastCellType.'_close',array(),$call[2]);
$this->tableCalls[] = array($call[0].'_open',array(1,null,1),$call[2]);
$this->lastCellType = $call[0];
} else {
$this->tableCalls[] = array($call[0].'_open',array(1,null,1),$call[2]);
$this->lastCellType = $call[0];
$this->firstCell = false;
}
$this->currentCols++;
}
protected function tableDefault($call)
{
$this->tableCalls[] = $call;
}
protected function finalizeTable()
{
// Add the max cols and rows to the table opening
if ($this->tableCalls[0][0] == 'table_open') {
// Adjust to num cols not num col delimeters
$this->tableCalls[0][1][] = $this->maxCols - 1;
$this->tableCalls[0][1][] = $this->maxRows;
$this->tableCalls[0][1][] = array_shift($this->tableCalls[0][1]);
} else {
trigger_error('First element in table call list is not table_open');
}
$lastRow = 0;
$lastCell = 0;
$cellKey = array();
$toDelete = array();
// if still in tableheader, then there can be no table header
// as all rows can't be within <THEAD>
if ($this->inTableHead) {
$this->inTableHead = false;
$this->countTableHeadRows = 0;
}
// Look for the colspan elements and increment the colspan on the
// previous non-empty opening cell. Once done, delete all the cells
// that contain colspans
for ($key = 0; $key < count($this->tableCalls); ++$key) {
$call = $this->tableCalls[$key];
switch ($call[0]) {
case 'table_open':
if ($this->countTableHeadRows) {
array_splice($this->tableCalls, $key+1, 0, array(
array('tablethead_open', array(), $call[2])));
}
break;
case 'tablerow_open':
$lastRow++;
$lastCell = 0;
break;
case 'tablecell_open':
case 'tableheader_open':
$lastCell++;
$cellKey[$lastRow][$lastCell] = $key;
break;
case 'table_align':
$prev = in_array($this->tableCalls[$key-1][0], array('tablecell_open', 'tableheader_open'));
$next = in_array($this->tableCalls[$key+1][0], array('tablecell_close', 'tableheader_close'));
// If the cell is empty, align left
if ($prev && $next) {
$this->tableCalls[$key-1][1][1] = 'left';
// If the previous element was a cell open, align right
} elseif ($prev) {
$this->tableCalls[$key-1][1][1] = 'right';
// If the next element is the close of an element, align either center or left
} elseif ($next) {
if ($this->tableCalls[$cellKey[$lastRow][$lastCell]][1][1] == 'right') {
$this->tableCalls[$cellKey[$lastRow][$lastCell]][1][1] = 'center';
} else {
$this->tableCalls[$cellKey[$lastRow][$lastCell]][1][1] = 'left';
}
}
// Now convert the whitespace back to cdata
$this->tableCalls[$key][0] = 'cdata';
break;
case 'colspan':
$this->tableCalls[$key-1][1][0] = false;
for ($i = $key-2; $i >= $cellKey[$lastRow][1]; $i--) {
if ($this->tableCalls[$i][0] == 'tablecell_open' ||
$this->tableCalls[$i][0] == 'tableheader_open'
) {
if (false !== $this->tableCalls[$i][1][0]) {
$this->tableCalls[$i][1][0]++;
break;
}
}
}
$toDelete[] = $key-1;
$toDelete[] = $key;
$toDelete[] = $key+1;
break;
case 'rowspan':
if ($this->tableCalls[$key-1][0] == 'cdata') {
// ignore rowspan if previous call was cdata (text mixed with :::)
// we don't have to check next call as that wont match regex
$this->tableCalls[$key][0] = 'cdata';
} else {
$spanning_cell = null;
// can't cross thead/tbody boundary
if (!$this->countTableHeadRows || ($lastRow-1 != $this->countTableHeadRows)) {
for ($i = $lastRow-1; $i > 0; $i--) {
if ($this->tableCalls[$cellKey[$i][$lastCell]][0] == 'tablecell_open' ||
$this->tableCalls[$cellKey[$i][$lastCell]][0] == 'tableheader_open'
) {
if ($this->tableCalls[$cellKey[$i][$lastCell]][1][2] >= $lastRow - $i) {
$spanning_cell = $i;
break;
}
}
}
}
if (is_null($spanning_cell)) {
// No spanning cell found, so convert this cell to
// an empty one to avoid broken tables
$this->tableCalls[$key][0] = 'cdata';
$this->tableCalls[$key][1][0] = '';
break;
}
$this->tableCalls[$cellKey[$spanning_cell][$lastCell]][1][2]++;
$this->tableCalls[$key-1][1][2] = false;
$toDelete[] = $key-1;
$toDelete[] = $key;
$toDelete[] = $key+1;
}
break;
case 'tablerow_close':
// Fix broken tables by adding missing cells
$moreCalls = array();
while (++$lastCell < $this->maxCols) {
$moreCalls[] = array('tablecell_open', array(1, null, 1), $call[2]);
$moreCalls[] = array('cdata', array(''), $call[2]);
$moreCalls[] = array('tablecell_close', array(), $call[2]);
}
$moreCallsLength = count($moreCalls);
if ($moreCallsLength) {
array_splice($this->tableCalls, $key, 0, $moreCalls);
$key += $moreCallsLength;
}
if ($this->countTableHeadRows == $lastRow) {
array_splice($this->tableCalls, $key+1, 0, array(
array('tablethead_close', array(), $call[2])));
}
break;
}
}
// condense cdata
$cnt = count($this->tableCalls);
for ($key = 0; $key < $cnt; $key++) {
if ($this->tableCalls[$key][0] == 'cdata') {
$ckey = $key;
$key++;
while ($this->tableCalls[$key][0] == 'cdata') {
$this->tableCalls[$ckey][1][0] .= $this->tableCalls[$key][1][0];
$toDelete[] = $key;
$key++;
}
continue;
}
}
foreach ($toDelete as $delete) {
unset($this->tableCalls[$delete]);
}
$this->tableCalls = array_values($this->tableCalls);
}
}
|
