/**
* Analyses a template file content (string) and extracts the blocks
*
* @param string $tpl the template in which to look for blocks
* @return void
* @see self::$blocks
*/
protected function searchBlocks($tpl)
{
$r = array();
$blockStarts = array();
$blockEnds = array();
preg_match_all('#{block([[:blank:]]*)name=(' . tpltools::$varreg . '+)(.*)}#U', $tpl, $r, PREG_OFFSET_CAPTURE);
foreach ($r[0] as $k => $match) {
$p = tpltools::readParams($match[0]);
$blockStarts[] = array($match[1], strlen($match[0]), $p['params']);
}
preg_match_all('#{/block}#', $tpl, $r, PREG_OFFSET_CAPTURE);
foreach ($r[0] as $match) {
$blockEnds[] = $match[1];
}
$s = sizeof($blockStarts);
for ($i = 0; $i < $s; $i++) {
for ($j = $i + 1; $j < $s; $j++) {
if ($blockStarts[$j][0] < $blockEnds[$i]) {
$tmp = $blockEnds[$j];
$blockEnds[$j] = $blockEnds[$i];
$blockEnds[$i] = $tmp;
}
}
}
foreach ($blockStarts as $k => $b) {
$this->blocks[$b[2]['name']][] = array('content' => substr($tpl, $b[0] + $b[1], $blockEnds[$k] - $b[0] - $b[1]), 'command' => substr($tpl, $b[0], $b[1]), 'params' => $b[2]);
}
}
/**
* Replaces template logic tags by PHP logic and control structures
* Also replaces the user functions
*
* @param string $tpl the template string to process
* @return string processed template string
*/
public static function logicAndTags($tpl)
{
preg_match_all('#{(.*)}#U', $tpl, $tags);
foreach ($tags[1] as $k => $tag) {
$a = explode(' ', $tag);
$t = $a[0];
$a[0] = '';
$a = implode(' ', $a);
$r = false;
if ($t == 'if') {
$r = '<?php if (' . $a . '): ?>';
} elseif ($t == 'elseif') {
$r = '<?php elseif (' . $a . '): ?>';
} elseif ($t == 'else') {
$r = '<?php else: ?>';
} elseif ($t == '/if') {
$r = '<?php endif; ?>';
} elseif ($t == 'foreach') {
$t = preg_split('/ as /i', $a);
$t[0] = trim($t[0]);
$t[1] = trim($t[1]);
$foreach_vars = explode('=>', $t[1]);
$foreach_id = uniqid();
$r = '<?php if (isset(' . $t[0] . ') && is_array(' . $t[0] . ') && count(' . $t[0] . ') > 0): ' . PHP_EOL . '$_tpl->assign("_keys_' . $foreach_id . '", array_keys(' . $t[0] . ')); ' . PHP_EOL . '$_tpl->assign("_length_' . $foreach_id . '", count(' . $t[0] . ')); ' . PHP_EOL . '$_tpl->assign("_loop_' . $foreach_id . '", 0); ' . PHP_EOL . 'while ($_loop_' . $foreach_id . ' < $_length_' . $foreach_id . '): ' . PHP_EOL . '$_tpl->assign("' . substr(trim($foreach_vars[(count($foreach_vars) + 1) % 2]), 1) . '", ' . $t[0] . '[$_keys_' . $foreach_id . '[$_loop_' . $foreach_id . ']]); ' . PHP_EOL . (count($foreach_vars) == 2 ? '$_tpl->assign("' . substr(trim($foreach_vars[0]), 1) . '", $_keys_' . $foreach_id . '[$_loop_' . $foreach_id . ']); ' : '') . PHP_EOL . '$_tpl->assign("_loop_' . $foreach_id . '", $_loop_' . $foreach_id . ' + 1); ' . '?>';
} elseif ($t == 'foreachelse') {
$foreachelse_id = uniqid();
$r = '<?php endwhile; else:' . PHP_EOL . '$_tpl->assign("_foreachelse_' . $foreachelse_id . '", true); ' . PHP_EOL . 'while ($_foreachelse_' . $foreachelse_id . '):' . PHP_EOL . '$_tpl->assign("_foreachelse_' . $foreachelse_id . '", false); ' . '?>';
} elseif ($t == '/foreach') {
$r = '<?php endwhile; endif; ?>';
} elseif ($t == 'while') {
$r = '<?php while(' . $a . '): ?>';
} elseif ($t == '/while') {
$r = '<?php endwhile; ?>';
} elseif ($t == 'for') {
$args = tpltools::readParams('{' . $tag . '}');
$args = $args['params'];
$args['step'] = isset($args['step']) ? $args['step'] : (isset($args['to']) ? 1 : -1);
$for_id = uniqid();
$r = '<?php' . PHP_EOL . '$_tpl->assign("_loop_' . $for_id . '", ' . $args['from'] . '); ' . PHP_EOL . 'while ($_loop_' . $for_id . (isset($args['to']) ? ' <= ' . $args['to'] : ' >= ' . $args['downto']) . '): ' . PHP_EOL . '$_tpl->assign("' . $args['var'] . '", $_loop_' . $for_id . '); ' . PHP_EOL . '$_tpl->assign("_loop_' . $for_id . '", $_loop_' . $for_id . ' + ' . $args['step'] . '); ' . '?>';
} elseif ($t == '/for') {
$r = '<?php endwhile; ?>';
} elseif (preg_match('#^(' . tpltools::$filereg . '+)$#', $t)) {
if (in_array($tags[0][$k], tpltools::$specials)) {
$r = str_replace(tpltools::$specials, tpltools::$rspecials, $tags[0][$k]);
} else {
$p = tpltools::readparams($tags[0][$k]);
$r = '<?php echo tplfunction_' . $p['function'] . '(array(';
$t = [];
foreach ($p['params'] as $param => $val) {
$t[] = '"' . $param . '"=>' . ($val != '' && $val[0] == '$' ? $val : '"' . $val . '"');
}
$r .= implode(',', $t);
$r .= '), $_tpl); ?>';
}
}
if ($r !== false) {
$tpl = str_replace($tags[0][$k], $r, $tpl);
}
}
return $tpl;
}
