157 lines
3.7 KiB
PHP
157 lines
3.7 KiB
PHP
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<?php
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/**
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* @copyright Copyright (c) 2014 Carsten Brandt
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* @license https://github.com/cebe/markdown/blob/master/LICENSE
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* @link https://github.com/cebe/markdown#readme
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*/
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namespace cebe\markdown\block;
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/**
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* Adds the table blocks
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*/
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trait TableTrait
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{
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/**
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* identify a line as the beginning of a table block.
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*/
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protected function identifyTable($line, $lines, $current)
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{
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return strpos($line, '|') !== false && isset($lines[$current + 1])
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&& preg_match('~^\\s*\\|?(\\s*:?-[\\-\\s]*:?\\s*\\|?)*\\s*$~', $lines[$current + 1])
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&& strpos($lines[$current + 1], '|') !== false
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&& isset($lines[$current + 2]) && trim($lines[$current + 1]) !== '';
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}
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/**
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* Consume lines for a table
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*/
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protected function consumeTable($lines, $current)
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{
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// consume until newline
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$block = [
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'table',
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'cols' => [],
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'rows' => [],
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];
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for ($i = $current, $count = count($lines); $i < $count; $i++) {
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$line = trim($lines[$i]);
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// extract alignment from second line
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if ($i == $current+1) {
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$cols = explode('|', trim($line, ' |'));
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foreach($cols as $col) {
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$col = trim($col);
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if (empty($col)) {
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$block['cols'][] = '';
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continue;
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}
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$l = ($col[0] === ':');
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$r = (substr($col, -1, 1) === ':');
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if ($l && $r) {
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$block['cols'][] = 'center';
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} elseif ($l) {
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$block['cols'][] = 'left';
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} elseif ($r) {
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$block['cols'][] = 'right';
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} else {
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$block['cols'][] = '';
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}
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}
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continue;
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}
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if ($line === '' || substr($lines[$i], 0, 4) === ' ') {
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break;
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}
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if ($line[0] === '|') {
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$line = substr($line, 1);
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}
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if (substr($line, -1, 1) === '|' && (substr($line, -2, 2) !== '\\|' || substr($line, -3, 3) === '\\\\|')) {
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$line = substr($line, 0, -1);
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}
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array_unshift($this->context, 'table');
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$row = $this->parseInline($line);
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array_shift($this->context);
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$r = count($block['rows']);
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$c = 0;
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$block['rows'][] = [];
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foreach ($row as $absy) {
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if (!isset($block['rows'][$r][$c])) {
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$block['rows'][$r][] = [];
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}
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if ($absy[0] === 'tableBoundary') {
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$c++;
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} else {
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$block['rows'][$r][$c][] = $absy;
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}
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}
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}
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return [$block, --$i];
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}
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/**
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* render a table block
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*/
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protected function renderTable($block)
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{
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$head = '';
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$body = '';
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$cols = $block['cols'];
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$first = true;
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foreach($block['rows'] as $row) {
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$cellTag = $first ? 'th' : 'td';
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$tds = '';
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foreach ($row as $c => $cell) {
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$align = empty($cols[$c]) ? '' : ' align="' . $cols[$c] . '"';
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$tds .= "<$cellTag$align>" . trim($this->renderAbsy($cell)) . "</$cellTag>";
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}
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if ($first) {
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$head .= "<tr>$tds</tr>\n";
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} else {
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$body .= "<tr>$tds</tr>\n";
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}
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$first = false;
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}
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return $this->composeTable($head, $body);
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}
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/**
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* This method composes a table from parsed body and head HTML.
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*
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* You may override this method to customize the table rendering, for example by
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* adding a `class` to the table tag:
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*
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* ```php
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* return "<table class="table table-striped">\n<thead>\n$head</thead>\n<tbody>\n$body</tbody>\n</table>\n"
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* ```
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*
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* @param string $head table head HTML.
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* @param string $body table body HTML.
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* @return string the complete table HTML.
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* @since 1.2.0
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*/
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protected function composeTable($head, $body)
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{
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return "<table>\n<thead>\n$head</thead>\n<tbody>\n$body</tbody>\n</table>\n";
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}
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/**
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* @marker |
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*/
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protected function parseTd($markdown)
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{
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if (isset($this->context[1]) && $this->context[1] === 'table') {
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return [['tableBoundary'], isset($markdown[1]) && $markdown[1] === ' ' ? 2 : 1];
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}
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return [['text', $markdown[0]], 1];
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}
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abstract protected function parseInline($text);
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abstract protected function renderAbsy($absy);
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}
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