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211
content/inc/Parsing/Handler/Block.php
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211
content/inc/Parsing/Handler/Block.php
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<?php
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namespace dokuwiki\Parsing\Handler;
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/**
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* Handler for paragraphs
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*
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* @author Harry Fuecks <hfuecks@gmail.com>
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*/
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class Block
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{
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protected $calls = array();
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protected $skipEol = false;
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protected $inParagraph = false;
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// Blocks these should not be inside paragraphs
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protected $blockOpen = array(
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'header',
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'listu_open','listo_open','listitem_open','listcontent_open',
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'table_open','tablerow_open','tablecell_open','tableheader_open','tablethead_open',
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'quote_open',
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'code','file','hr','preformatted','rss',
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'htmlblock','phpblock',
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'footnote_open',
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);
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protected $blockClose = array(
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'header',
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'listu_close','listo_close','listitem_close','listcontent_close',
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'table_close','tablerow_close','tablecell_close','tableheader_close','tablethead_close',
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'quote_close',
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'code','file','hr','preformatted','rss',
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'htmlblock','phpblock',
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'footnote_close',
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);
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// Stacks can contain paragraphs
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protected $stackOpen = array(
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'section_open',
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);
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protected $stackClose = array(
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'section_close',
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);
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/**
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* Constructor. Adds loaded syntax plugins to the block and stack
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* arrays
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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public function __construct()
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{
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global $DOKU_PLUGINS;
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//check if syntax plugins were loaded
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if (empty($DOKU_PLUGINS['syntax'])) return;
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foreach ($DOKU_PLUGINS['syntax'] as $n => $p) {
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$ptype = $p->getPType();
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if ($ptype == 'block') {
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$this->blockOpen[] = 'plugin_'.$n;
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$this->blockClose[] = 'plugin_'.$n;
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} elseif ($ptype == 'stack') {
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$this->stackOpen[] = 'plugin_'.$n;
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$this->stackClose[] = 'plugin_'.$n;
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}
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}
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}
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protected function openParagraph($pos)
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{
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if ($this->inParagraph) return;
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$this->calls[] = array('p_open',array(), $pos);
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$this->inParagraph = true;
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$this->skipEol = true;
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}
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/**
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* Close a paragraph if needed
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*
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* This function makes sure there are no empty paragraphs on the stack
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*
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* @param string|integer $pos
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*/
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protected function closeParagraph($pos)
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{
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if (!$this->inParagraph) return;
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// look back if there was any content - we don't want empty paragraphs
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$content = '';
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$ccount = count($this->calls);
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for ($i=$ccount-1; $i>=0; $i--) {
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if ($this->calls[$i][0] == 'p_open') {
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break;
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} elseif ($this->calls[$i][0] == 'cdata') {
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$content .= $this->calls[$i][1][0];
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} else {
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$content = 'found markup';
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break;
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}
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}
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if (trim($content)=='') {
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//remove the whole paragraph
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//array_splice($this->calls,$i); // <- this is much slower than the loop below
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for ($x=$ccount; $x>$i;
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$x--) array_pop($this->calls);
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} else {
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// remove ending linebreaks in the paragraph
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$i=count($this->calls)-1;
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if ($this->calls[$i][0] == 'cdata') $this->calls[$i][1][0] = rtrim($this->calls[$i][1][0], "\n");
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$this->calls[] = array('p_close',array(), $pos);
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}
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$this->inParagraph = false;
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$this->skipEol = true;
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}
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protected function addCall($call)
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{
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$key = count($this->calls);
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if ($key and ($call[0] == 'cdata') and ($this->calls[$key-1][0] == 'cdata')) {
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$this->calls[$key-1][1][0] .= $call[1][0];
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} else {
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$this->calls[] = $call;
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}
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}
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// simple version of addCall, without checking cdata
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protected function storeCall($call)
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{
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$this->calls[] = $call;
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}
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/**
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* Processes the whole instruction stack to open and close paragraphs
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*
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* @author Harry Fuecks <hfuecks@gmail.com>
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* @author Andreas Gohr <andi@splitbrain.org>
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*
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* @param array $calls
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*
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* @return array
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*/
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public function process($calls)
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{
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// open first paragraph
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$this->openParagraph(0);
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foreach ($calls as $key => $call) {
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$cname = $call[0];
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if ($cname == 'plugin') {
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$cname='plugin_'.$call[1][0];
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$plugin = true;
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$plugin_open = (($call[1][2] == DOKU_LEXER_ENTER) || ($call[1][2] == DOKU_LEXER_SPECIAL));
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$plugin_close = (($call[1][2] == DOKU_LEXER_EXIT) || ($call[1][2] == DOKU_LEXER_SPECIAL));
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} else {
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$plugin = false;
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}
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/* stack */
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if (in_array($cname, $this->stackClose) && (!$plugin || $plugin_close)) {
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$this->closeParagraph($call[2]);
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$this->storeCall($call);
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$this->openParagraph($call[2]);
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continue;
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}
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if (in_array($cname, $this->stackOpen) && (!$plugin || $plugin_open)) {
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$this->closeParagraph($call[2]);
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$this->storeCall($call);
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$this->openParagraph($call[2]);
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continue;
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}
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/* block */
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// If it's a substition it opens and closes at the same call.
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// To make sure next paragraph is correctly started, let close go first.
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if (in_array($cname, $this->blockClose) && (!$plugin || $plugin_close)) {
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$this->closeParagraph($call[2]);
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$this->storeCall($call);
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$this->openParagraph($call[2]);
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continue;
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}
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if (in_array($cname, $this->blockOpen) && (!$plugin || $plugin_open)) {
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$this->closeParagraph($call[2]);
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$this->storeCall($call);
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continue;
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}
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/* eol */
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if ($cname == 'eol') {
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// Check this isn't an eol instruction to skip...
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if (!$this->skipEol) {
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// Next is EOL => double eol => mark as paragraph
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if (isset($calls[$key+1]) && $calls[$key+1][0] == 'eol') {
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$this->closeParagraph($call[2]);
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$this->openParagraph($call[2]);
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} else {
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//if this is just a single eol make a space from it
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$this->addCall(array('cdata',array("\n"), $call[2]));
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}
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}
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continue;
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}
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/* normal */
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$this->addCall($call);
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$this->skipEol = false;
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}
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// close last paragraph
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$call = end($this->calls);
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$this->closeParagraph($call[2]);
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return $this->calls;
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}
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}
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