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- <?php
- namespace dokuwiki\Parsing\Handler;
- /**
- * Handler for paragraphs
- *
- * @author Harry Fuecks <hfuecks@gmail.com>
- */
- class Block
- {
- protected $calls = array();
- protected $skipEol = false;
- protected $inParagraph = false;
- // Blocks these should not be inside paragraphs
- protected $blockOpen = array(
- 'header',
- 'listu_open','listo_open','listitem_open','listcontent_open',
- 'table_open','tablerow_open','tablecell_open','tableheader_open','tablethead_open',
- 'quote_open',
- 'code','file','hr','preformatted','rss',
- 'footnote_open',
- );
- protected $blockClose = array(
- 'header',
- 'listu_close','listo_close','listitem_close','listcontent_close',
- 'table_close','tablerow_close','tablecell_close','tableheader_close','tablethead_close',
- 'quote_close',
- 'code','file','hr','preformatted','rss',
- 'footnote_close',
- );
- // Stacks can contain paragraphs
- protected $stackOpen = array(
- 'section_open',
- );
- protected $stackClose = array(
- 'section_close',
- );
- /**
- * Constructor. Adds loaded syntax plugins to the block and stack
- * arrays
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- public function __construct()
- {
- global $DOKU_PLUGINS;
- //check if syntax plugins were loaded
- if (empty($DOKU_PLUGINS['syntax'])) return;
- foreach ($DOKU_PLUGINS['syntax'] as $n => $p) {
- $ptype = $p->getPType();
- if ($ptype == 'block') {
- $this->blockOpen[] = 'plugin_'.$n;
- $this->blockClose[] = 'plugin_'.$n;
- } elseif ($ptype == 'stack') {
- $this->stackOpen[] = 'plugin_'.$n;
- $this->stackClose[] = 'plugin_'.$n;
- }
- }
- }
- protected function openParagraph($pos)
- {
- if ($this->inParagraph) return;
- $this->calls[] = array('p_open',array(), $pos);
- $this->inParagraph = true;
- $this->skipEol = true;
- }
- /**
- * Close a paragraph if needed
- *
- * This function makes sure there are no empty paragraphs on the stack
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- *
- * @param string|integer $pos
- */
- protected function closeParagraph($pos)
- {
- if (!$this->inParagraph) return;
- // look back if there was any content - we don't want empty paragraphs
- $content = '';
- $ccount = count($this->calls);
- for ($i=$ccount-1; $i>=0; $i--) {
- if ($this->calls[$i][0] == 'p_open') {
- break;
- } elseif ($this->calls[$i][0] == 'cdata') {
- $content .= $this->calls[$i][1][0];
- } else {
- $content = 'found markup';
- break;
- }
- }
- if (trim($content)=='') {
- //remove the whole paragraph
- //array_splice($this->calls,$i); // <- this is much slower than the loop below
- for ($x=$ccount; $x>$i;
- $x--) array_pop($this->calls);
- } else {
- // remove ending linebreaks in the paragraph
- $i=count($this->calls)-1;
- if ($this->calls[$i][0] == 'cdata') $this->calls[$i][1][0] = rtrim($this->calls[$i][1][0], "\n");
- $this->calls[] = array('p_close',array(), $pos);
- }
- $this->inParagraph = false;
- $this->skipEol = true;
- }
- protected function addCall($call)
- {
- $key = count($this->calls);
- if ($key and ($call[0] == 'cdata') and ($this->calls[$key-1][0] == 'cdata')) {
- $this->calls[$key-1][1][0] .= $call[1][0];
- } else {
- $this->calls[] = $call;
- }
- }
- // simple version of addCall, without checking cdata
- protected function storeCall($call)
- {
- $this->calls[] = $call;
- }
- /**
- * Processes the whole instruction stack to open and close paragraphs
- *
- * @author Harry Fuecks <hfuecks@gmail.com>
- * @author Andreas Gohr <andi@splitbrain.org>
- *
- * @param array $calls
- *
- * @return array
- */
- public function process($calls)
- {
- // open first paragraph
- $this->openParagraph(0);
- foreach ($calls as $key => $call) {
- $cname = $call[0];
- if ($cname == 'plugin') {
- $cname='plugin_'.$call[1][0];
- $plugin = true;
- $plugin_open = (($call[1][2] == DOKU_LEXER_ENTER) || ($call[1][2] == DOKU_LEXER_SPECIAL));
- $plugin_close = (($call[1][2] == DOKU_LEXER_EXIT) || ($call[1][2] == DOKU_LEXER_SPECIAL));
- } else {
- $plugin = false;
- }
- /* stack */
- if (in_array($cname, $this->stackClose) && (!$plugin || $plugin_close)) {
- $this->closeParagraph($call[2]);
- $this->storeCall($call);
- $this->openParagraph($call[2]);
- continue;
- }
- if (in_array($cname, $this->stackOpen) && (!$plugin || $plugin_open)) {
- $this->closeParagraph($call[2]);
- $this->storeCall($call);
- $this->openParagraph($call[2]);
- continue;
- }
- /* block */
- // If it's a substition it opens and closes at the same call.
- // To make sure next paragraph is correctly started, let close go first.
- if (in_array($cname, $this->blockClose) && (!$plugin || $plugin_close)) {
- $this->closeParagraph($call[2]);
- $this->storeCall($call);
- $this->openParagraph($call[2]);
- continue;
- }
- if (in_array($cname, $this->blockOpen) && (!$plugin || $plugin_open)) {
- $this->closeParagraph($call[2]);
- $this->storeCall($call);
- continue;
- }
- /* eol */
- if ($cname == 'eol') {
- // Check this isn't an eol instruction to skip...
- if (!$this->skipEol) {
- // Next is EOL => double eol => mark as paragraph
- if (isset($calls[$key+1]) && $calls[$key+1][0] == 'eol') {
- $this->closeParagraph($call[2]);
- $this->openParagraph($call[2]);
- } else {
- //if this is just a single eol make a space from it
- $this->addCall(array('cdata',array("\n"), $call[2]));
- }
- }
- continue;
- }
- /* normal */
- $this->addCall($call);
- $this->skipEol = false;
- }
- // close last paragraph
- $call = end($this->calls);
- $this->closeParagraph($call[2]);
- return $this->calls;
- }
- }
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