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<?php
/**
*
* Parses for table markup.
*
* This class implements a Text_Wiki_Parse to find source text marked as
* a set of table rows, where a line start (and optionally ends) with a
* single-pipe (|) and uses single-pipes to separate table cells.
* The rows must be on sequential lines (no blank lines between them).
* A blank line indicates the beginning of other text or another table.
*
* @category Text
*
* @package Text_Wiki
*
* @author Michele Tomaiuolo <tomamic@yahoo.it>
* @author Paul M. Jones <pmjones@php.net>
*
* @license LGPL
*
* @version $Id: Table.php 243077 2007-09-28 17:14:58Z mic $
*
*/
class Text_Wiki_Parse_Table extends Text_Wiki_Parse {
/**
*
* The regular expression used to parse the source text and find
* matches conforming to this rule. Used by the parse() method.
*
* @access public
*
* @var string
*
* @see parse()
*
*/
var $regex = '/\n((\|).*)(\n)(?!(\|))/Us';
/**
*
* Generates a replacement for the matched text.
*
* Token options are:
*
* 'type' =>
* 'table_start' : the start of a bullet list
* 'table_end' : the end of a bullet list
* 'row_start' : the start of a number list
* 'row_end' : the end of a number list
* 'cell_start' : the start of item text (bullet or number)
* 'cell_end' : the end of item text (bullet or number)
*
* 'cols' => the number of columns in the table (for 'table_start')
*
* 'rows' => the number of rows in the table (for 'table_start')
*
* 'span' => column span (for 'cell_start')
*
* 'attr' => column attribute flag (for 'cell_start')
*
* @access public
*
* @param array &$matches The array of matches from parse().
*
* @return A series of text and delimited tokens marking the different
* table elements and cell text.
*
*/
function process(&$matches)
{
// our eventual return value
$return = '';
// the number of columns in the table
$num_cols = 0;
// the number of rows in the table
$num_rows = 0;
// rows are separated by newlines in the matched text
$rows = explode("\n", $matches[1]);
// loop through each row
foreach ($rows as $row) {
// increase the row count
$num_rows ++;
// remove first and last (optional) pipe
$row = substr($row, 1);
if ($row[strlen($row) - 1] == '|') {
$row = substr($row, 0, -1);
}
// cells are separated by pipes
$cells = explode("|", $row);
if (count($cells) == 1 && $cells[0][0] == '=' && ($num_rows == 1 || $num_rows == count($rows)) && ! isset($caption)) {
$caption = trim(trim($cells[0], '='));
// start the caption...
$return .= $this->wiki->addToken(
$this->rule,
array ('type' => 'caption_start')
);
// ...add the content...
$return .= $caption;
// ...and end the caption.
$return .= $this->wiki->addToken(
$this->rule,
array ('type' => 'caption_end')
);
}
else {
// update the column count
if (count($cells) > $num_cols) {
$num_cols = count($cells);
}
// start a new row
$return .= $this->wiki->addToken(
$this->rule,
array('type' => 'row_start')
);
for ($i = 0; $i < count($cells); $i++) {
$cell = $cells[$i];
// by default, cells span only one column (their own)
$span = 1;
$attr = '';
while ($i + 1 < count($cells) && ! strlen($cells[$i + 1])) {
$i++;
$span++;
}
if (strlen($cell) > 0 && $cell[0] == '=') {
$attr = 'header';
$cell = trim($cell, '=');
}
// start a new cell...
$return .= $this->wiki->addToken(
$this->rule,
array (
'type' => 'cell_start',
'attr' => $attr,
'span' => $span
)
);
// ...add the content...
$return .= trim($cell);
// ...and end the cell.
$return .= $this->wiki->addToken(
$this->rule,
array (
'type' => 'cell_end',
'attr' => $attr,
'span' => $span
)
);
}
// end the row
$return .= $this->wiki->addToken(
$this->rule,
array('type' => 'row_end')
);
}
}
// we're done!
return
"\n\n".
$this->wiki->addToken(
$this->rule,
array(
'type' => 'table_start',
'rows' => $num_rows,
'cols' => $num_cols
)
).
$return.
$this->wiki->addToken(
$this->rule,
array(
'type' => 'table_end'
)
).
"\n\n";
}
}
?>
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