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+<?php
+
+/*
+ +-----------------------------------------------------------------------+
+ | This file is part of the Roundcube Webmail client |
+ | |
+ | Copyright (C) 2011-2013, Kolab Systems AG |
+ | Copyright (C) 2008-2013, The Roundcube Dev Team |
+ | |
+ | Licensed under the GNU General Public License version 3 or |
+ | any later version with exceptions for skins & plugins. |
+ | See the README file for a full license statement. |
+ | |
+ | PURPOSE: |
+ | Interface class for a spell-checking backend |
+ +-----------------------------------------------------------------------+
+ | Author: Thomas Bruederli <roundcube@gmail.com> |
+ +-----------------------------------------------------------------------+
+*/
+
+/**
+ * Interface class for a spell-checking backend
+ *
+ * @package Framework
+ * @subpackage Utils
+ */
+abstract class rcube_spellcheck_engine
+{
+ const MAX_SUGGESTIONS = 10;
+
+ protected $lang;
+ protected $error;
+ protected $dictionary;
+ protected $separator = '/[\s\r\n\t\(\)\/\[\]{}<>\\"]+|[:;?!,\.](?=\W|$)/';
+
+ /**
+ * Default constructor
+ */
+ public function __construct($dict, $lang)
+ {
+ $this->dictionary = $dict;
+ $this->lang = $lang;
+ }
+
+ /**
+ * Set content and check spelling
+ *
+ * @param string $text Text content for spellchecking
+ *
+ * @return bool True when no mispelling found, otherwise false
+ */
+ abstract function check($text);
+
+ /**
+ * Returns suggestions for the specified word
+ *
+ * @param string $word The word
+ *
+ * @return array Suggestions list
+ */
+ abstract function get_suggestions($word);
+
+ /**
+ * Returns misspelled words
+ *
+ * @param string $text The content for spellchecking. If empty content
+ * used for check() method will be used.
+ *
+ * @return array List of misspelled words
+ */
+ abstract function get_words($text = null);
+
+ /**
+ * Returns error message
+ *
+ * @return string Error message
+ */
+ public function error()
+ {
+ return $this->error;
+ }
+
+}
+