![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/branches/old/gosa-plugins/mail/personal/mail/sieve/class_scanner.inc b/branches/old/gosa-plugins/mail/personal/mail/sieve/class_scanner.inc
--- /dev/null
@@ -0,0 +1,140 @@
+<?php
+
+class Scanner
+{
+ function Scanner(&$script)
+ {
+ $this->_construct($script);
+ }
+
+ function _construct(&$script)
+ {
+ if ($script === null)
+ {
+ return;
+ }
+
+ $this->tokenize($script);
+ }
+
+ function setCommentFunc($callback)
+ {
+ if ($callback == null || is_callable($callback))
+ {
+ $this->commentFn_ = $callback;
+ }
+ }
+
+ function tokenize(&$script)
+ {
+ $pos = 0;
+ $line = 1;
+ $script_length = mb_strlen($script);
+
+ while ($pos < $script_length)
+ {
+ foreach ($this->token_match_ as $class => $regex)
+ {
+ if (preg_match('/^'. $regex .'/', mb_substr($script, $pos), $match))
+ {
+ $length = mb_strlen($match[0]);
+
+ if ($class != 'whitespace')
+ {
+ array_push($this->tokens_, array(
+ 'class' => $class,
+ 'text' => chop(mb_substr($script, $pos, $length)),
+ 'line' => $line,
+ ));
+ }
+ if ($class == 'unknown')
+ {
+ return;
+ }
+
+ $pos += $length;
+ $line += mb_substr_count($match[0], "\n");
+ break;
+ }
+ }
+ }
+
+ array_push($this->tokens_, array(
+ 'class' => 'script-end',
+ 'text' => 'script-end',
+ 'line' => $line,
+ ));
+ }
+
+ function nextTokenIs($class)
+ {
+ $offset = 0;
+ do
+ {
+ $next = $this->tokens_[$this->tokenPos_ + $offset++]['class'];
+ }
+ while ($next == 'comment');
+
+ if (is_array($class))
+ {
+ return in_array($next, $class);
+ }
+ else if (is_string($class))
+ {
+ return (strcmp($next, $class) == 0);
+ }
+ return false;
+ }
+
+ function peekNextToken()
+ {
+ return $this->tokens_[$this->tokenPos_];
+ }
+
+ function nextToken()
+ {
+ $token = $this->tokens_[$this->tokenPos_++];
+ while ($token['class'] == 'comment')
+ {
+ if ($this->commentFn_ != null)
+ {
+ call_user_func($this->commentFn_, $token);
+ }
+ $token = $this->tokens_[$this->tokenPos_++];
+ }
+ return $token;
+ }
+
+ function scriptStart()
+ {
+ return array(
+ 'class' => 'script-start',
+ 'text' => 'script-start',
+ 'line' => 1,
+ );
+ }
+
+ var $commentFn_ = null;
+ var $tokenPos_ = 0;
+ var $tokens_ = array();
+ var $token_match_ = array (
+ 'left-bracket' => '\[',
+ 'right-bracket' => '\]',
+ 'block-start' => '\{',
+ 'block-end' => '\}',
+ 'left-parant' => '\(',
+ 'right-parant' => '\)',
+ 'comma' => ',',
+ 'semicolon' => ';',
+ 'whitespace' => '[ \r\n\t]+',
+ 'tag' => ':[[:alpha:]_][[:alnum:]_]*(?=\b)',
+ 'quoted-string' => '"(?:\\[\\"]|[^\x00"])*"',
+ 'number' => '[[:digit:]]+(?:[KMG])?(?=\b)',
+ 'comment' => '(?:\/\*(?:[^\*]|\*(?=[^\/]))*\*\/|#[^\r\n]*\r?\n)',
+ 'multi-line' => 'text:[ \t]*(?:#[^\r\n]*)?\r?\n(\.[^\r\n]+\r?\n|[^\.]*\r?\n)*\.\r?\n',
+ 'identifier' => '[[:alpha:]_][[:alnum:]_]*(?=\b)',
+ 'unknown token' => '[^ \r\n\t]+'
+ );
+}
+
+?>
\ No newline at end of file