A dokuwiki plugin for processing query to MySQL databases and display results as a table.
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sqlquery/syntax.php

138 lines
4.4 KiB

<?php
/**
* DokuWiki Plugin sqlquery (Syntax Component)
*
* @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
* @author George Pirogov <i1557@yandex.ru>
* @author Thomas Hooge <hooge@rowa-group.com>
*
*/
// must be run within Dokuwiki
if (!defined('DOKU_INC')) die();
/**
* All DokuWiki plugins to extend the parser/rendering mechanism
* need to inherit from this class
*/
class syntax_plugin_sqlquery extends DokuWiki_Syntax_Plugin {
public function getType() { return 'substition'; }
public function getSort() { return 666; }
public function getPType() { return 'block'; }
public function connectTo($mode)
{
$this->Lexer->addSpecialPattern('<sql\b(?:\s+(?:host|db)=[\w\-\.$]+?)*\s*>(?:.*?</sql>)', $mode, 'plugin_sqlquery');
}
/**
* Handle matches of the sqlquery syntax
*
* @param string $match The match of the syntax
* @param int $state The state of the handler
* @param int $pos The position in the document
* @param Doku_Handler $handler The handler
*
* @return array Data for the renderer
*/
public function handle($match, $state, $pos, Doku_Handler $handler) {
$data = array('state' => $state);
if ($state == DOKU_LEXER_SPECIAL) {
# get host
if (preg_match('/<sql\b.*host=([\w\-\.$]+)/', $match, $result)) {
$data['host'] = $result[1];
} else {
$data['host'] = $this->getConf('Host');
}
# get database
if (preg_match('/<sql\b.*db=([\w\-\.$]+)/', $match, $result)) {
$data['db'] = $result[1];
} else {
$data['db'] = $this->getConf('DB');
}
# get query
$data['match'] = $match;
if (preg_match('%<sql.*?>(.*)</sql>%s', $match, $result)) {
$data['query'] = trim($result[1]);
}
}
return $data;
}
/**
* Render xhtml output or metadata
*
* @param string $mode Renderer mode (supported modes: xhtml)
* @param Doku_Renderer $renderer The renderer
* @param array $data The data from the handler() function
*
* @return bool If rendering was successful.
*/
public function render($mode, Doku_Renderer $renderer, $data)
{
if ($mode != 'xhtml') return false;
if (empty($data['query'])) return true;
// get configuration
$user = $this->getConf('user');
$password = $this->getConf('password');
// connect to database
$dsn = "mysql:host={$data['host']};dbname={$data[db]}";
try {
$dbh = new PDO($dsn, $user, $password);
} catch (PDOException $e) {
$renderer->doc .= "<pre>Unable to connect ro database:" . $e->getMessage() . "</pre>\n";
return true;
}
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$dbh->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_NUM);
// run query
try {
$result = $dbh->query($data['query']);
} catch (PDOException $e) {
$renderer->doc .= "<pre>Error in query:" . $e->getMessage() . "</pre>\n";
return true;
}
// get the number of fields in the table
$fieldcount = $result->columnCount();
// build a table
$renderer->doc .= '<table id="sqlquerytable" class="inline">' . "\n";
// build the header section of the table
$renderer->doc .= "<thead><tr>";
for ($i = 0; $i < $fieldcount; $i++) {
$meta = $result->getColumnMeta($i);
$renderer->doc .= "<th>";
$renderer->doc .= $meta['name'];
$renderer->doc .= "</th>";
}
$renderer->doc .= "</tr></thead>\n";
// build the contents of the table
$renderer->doc .= "<tbody>\n";
foreach ($result as $row) {
$renderer->doc .= "<tr>";
for ( $i = 0; $i < $fieldcount; $i++ ) {
$renderer->doc .= "<td>";
$renderer->doc .= $row[$i];
$renderer->doc .= "</td>";
}
$renderer->doc .= "</tr>\n";
}
// finish the table
$renderer->doc .= "</tbody>\n</table>\n";
// Close connection, there is no close() method with PDO :-(
$result = null;
$dbh = null;
return true;
}
}