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comparison program/lib/Roundcube/rcube_spellcheck_enchant.php @ 0:4681f974d28b

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vanilla 1.3.3 distro, I hope
author Charlie Root
date Thu, 04 Jan 2018 15:52:31 -0500
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1 <?php
2
3 /**
4 +-----------------------------------------------------------------------+
5 | This file is part of the Roundcube Webmail client |
6 | |
7 | Copyright (C) 2011-2013, Kolab Systems AG |
8 | Copyright (C) 20011-2013, The Roundcube Dev Team |
9 | |
10 | Licensed under the GNU General Public License version 3 or |
11 | any later version with exceptions for skins & plugins. |
12 | See the README file for a full license statement. |
13 | |
14 | PURPOSE: |
15 | Spellchecking backend implementation to work with Enchant |
16 +-----------------------------------------------------------------------+
17 | Author: Aleksander Machniak <machniak@kolabsys.com> |
18 +-----------------------------------------------------------------------+
19 */
20
21 /**
22 * Spellchecking backend implementation to work with Pspell
23 *
24 * @package Framework
25 * @subpackage Utils
26 */
27 class rcube_spellcheck_enchant extends rcube_spellcheck_engine
28 {
29 private $enchant_broker;
30 private $enchant_dictionary;
31 private $matches = array();
32
33 /**
34 * Return a list of languages supported by this backend
35 *
36 * @see rcube_spellcheck_engine::languages()
37 */
38 function languages()
39 {
40 $this->init();
41
42 $langs = array();
43 if ($dicts = enchant_broker_list_dicts($this->enchant_broker)) {
44 foreach ($dicts as $dict) {
45 $langs[] = preg_replace('/-.*$/', '', $dict['lang_tag']);
46 }
47 }
48
49 return array_unique($langs);
50 }
51
52 /**
53 * Initializes Enchant dictionary
54 */
55 private function init()
56 {
57 if (!$this->enchant_broker) {
58 if (!extension_loaded('enchant')) {
59 $this->error = "Enchant extension not available";
60 return;
61 }
62
63 $this->enchant_broker = enchant_broker_init();
64 }
65
66 if (!enchant_broker_dict_exists($this->enchant_broker, $this->lang)) {
67 $this->error = "Unable to load dictionary for selected language using Enchant";
68 return;
69 }
70
71 $this->enchant_dictionary = enchant_broker_request_dict($this->enchant_broker, $this->lang);
72 }
73
74 /**
75 * Set content and check spelling
76 *
77 * @see rcube_spellcheck_engine::check()
78 */
79 function check($text)
80 {
81 $this->init();
82
83 if (!$this->enchant_dictionary) {
84 return array();
85 }
86
87 // tokenize
88 $text = preg_split($this->separator, $text, NULL, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_OFFSET_CAPTURE);
89
90 $diff = 0;
91 $matches = array();
92
93 foreach ($text as $w) {
94 $word = trim($w[0]);
95 $pos = $w[1] - $diff;
96 $len = mb_strlen($word);
97
98 // skip exceptions
99 if ($this->dictionary->is_exception($word)) {
100 }
101 else if (!enchant_dict_check($this->enchant_dictionary, $word)) {
102 $suggestions = enchant_dict_suggest($this->enchant_dictionary, $word);
103
104 if (count($suggestions) > self::MAX_SUGGESTIONS) {
105 $suggestions = array_slice($suggestions, 0, self::MAX_SUGGESTIONS);
106 }
107
108 $matches[] = array($word, $pos, $len, null, $suggestions);
109 }
110
111 $diff += (strlen($word) - $len);
112 }
113
114 $this->matches = $matches;
115 return $matches;
116 }
117
118 /**
119 * Returns suggestions for the specified word
120 *
121 * @see rcube_spellcheck_engine::get_words()
122 */
123 function get_suggestions($word)
124 {
125 $this->init();
126
127 if (!$this->enchant_dictionary) {
128 return array();
129 }
130
131 $suggestions = enchant_dict_suggest($this->enchant_dictionary, $word);
132
133 if (count($suggestions) > self::MAX_SUGGESTIONS)
134 $suggestions = array_slice($suggestions, 0, self::MAX_SUGGESTIONS);
135
136 return is_array($suggestions) ? $suggestions : array();
137 }
138
139 /**
140 * Returns misspelled words
141 *
142 * @see rcube_spellcheck_engine::get_suggestions()
143 */
144 function get_words($text = null)
145 {
146 $result = array();
147
148 if ($text) {
149 // init spellchecker
150 $this->init();
151
152 if (!$this->enchant_dictionary) {
153 return array();
154 }
155
156 // With Enchant we don't need to get suggestions to return misspelled words
157 $text = preg_split($this->separator, $text, NULL, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_OFFSET_CAPTURE);
158
159 foreach ($text as $w) {
160 $word = trim($w[0]);
161
162 // skip exceptions
163 if ($this->dictionary->is_exception($word)) {
164 continue;
165 }
166
167 if (!enchant_dict_check($this->enchant_dictionary, $word)) {
168 $result[] = $word;
169 }
170 }
171
172 return $result;
173 }
174
175 foreach ($this->matches as $m) {
176 $result[] = $m[0];
177 }
178
179 return $result;
180 }
181 }