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<?php
namespace dokuwiki\Parsing\Handler;
/**
* Handler for paragraphs
*
* @author Harry Fuecks <hfuecks@gmail.com>
*/
class Block
{
protected $calls = [];
protected $skipEol = false;
protected $inParagraph = false;
// Blocks these should not be inside paragraphs
protected $blockOpen = [
'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 = [
'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 = ['section_open'];
protected $stackClose = ['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[] = ['p_open', [], $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[] = ['p_close', [], $pos];
}
$this->inParagraph = false;
$this->skipEol = true;
}
protected function addCall($call)
{
$key = count($this->calls);
if ($key && $call[0] == 'cdata' && $this->calls[$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(['cdata', ["\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;
}
}
|
