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1 | <?php |
2 | /******************************************************************************** |
3 | * include/spool.inc.php : spool subroutines |
4 | * ----------------------- |
5 | * |
6 | * This file is part of the banana distribution |
7 | * Copyright: See COPYING files that comes with this distribution |
8 | ********************************************************************************/ |
9 | |
10 | if(!function_exists('_file_put_contents')) { |
11 | function file_put_contents($filename, $data) |
12 | { |
13 | $fp = fopen($filename, 'w'); |
14 | if(!$fp) { |
15 | trigger_error('file_put_contents cannot write in file '.$filename, E_USER_ERROR); |
16 | return; |
17 | } |
18 | fputs($fp, $data); |
19 | fclose($fp); |
20 | } |
21 | } |
22 | |
23 | function spoolCompare($a,$b) { return ($b->date>=$a->date); } |
24 | |
25 | /** Class spoolhead |
26 | * class used in thread overviews |
27 | */ |
28 | class BananaSpoolHead |
29 | { |
30 | /** date (timestamp) */ |
31 | var $date; |
32 | /** subject */ |
33 | var $subject; |
34 | /** author */ |
35 | var $from; |
36 | /** reference of parent */ |
37 | var $parent; |
38 | /** paren is direct */ |
39 | var $parent_direct; |
40 | /** array of children */ |
41 | var $children = Array(); |
42 | /** true if post is read */ |
43 | var $isread; |
44 | /** number of posts deeper in this branch of tree */ |
45 | var $desc; |
46 | /** same as desc, but counts only unread posts */ |
47 | var $descunread; |
48 | |
49 | /** constructor |
50 | * @param $_date INTEGER timestamp of post |
51 | * @param $_subject STRING subject of post |
52 | * @param $_from STRING author of post |
53 | * @param $_desc INTEGER desc value (1 for a new post) |
54 | * @param $_read BOOLEAN true if read |
55 | * @param $_descunread INTEGER descunread value (0 for a new post) |
56 | */ |
57 | |
58 | function BananaSpoolHead($_date, $_subject, $_from, $_desc=1, $_read=true, $_descunread=0) |
59 | { |
60 | $this->date = $_date; |
61 | $this->subject = $_subject; |
62 | $this->from = $_from; |
63 | $this->desc = $_desc; |
64 | $this->isread = $_read; |
65 | $this->descunread = $_descunread; |
66 | } |
67 | } |
68 | |
69 | /** Class spool |
70 | * builds and updates spool |
71 | */ |
72 | |
73 | define("BANANA_SPOOL_VERSION", '0.2'); |
74 | |
75 | class BananaSpool |
76 | { |
77 | var $version; |
78 | /** spool */ |
79 | var $overview; |
80 | /** group name */ |
81 | var $group; |
82 | /** array msgid => msgnum */ |
83 | var $ids; |
84 | /** thread starts */ |
85 | var $roots; |
86 | |
87 | /** constructor |
88 | * @param $_group STRING group name |
89 | * @param $_display INTEGER 1 => all posts, 2 => only threads with new posts |
90 | * @param $_since INTEGER time stamp (used for read/unread) |
91 | */ |
92 | function BananaSpool($_group, $_display=0, $_since="") |
93 | { |
94 | global $banana; |
95 | $this->group = $_group; |
96 | $groupinfo = $banana->nntp->group($_group); |
97 | if (!$groupinfo) { return ($this = null); } |
98 | |
99 | $this->_readFromFile(); |
100 | |
101 | $do_save = false; |
102 | $first = $banana->maxspool ? max($groupinfo[2]-$banana->maxspool, $groupinfo[1]) : $groupinfo[1]; |
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103 | $last = $groupinfo[2]; |
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104 | if ($this->version == BANANA_SPOOL_VERSION && is_array($this->overview)) { |
105 | if (count($this->overview)) { |
106 | for ($id = min(array_keys($this->overview)); $id<$first; $id++) { |
107 | $this->delid($id, false); |
108 | $do_save = true; |
109 | } |
110 | } |
111 | if (!empty($this->overview)) { |
112 | $first = max(array_keys($this->overview))+1; |
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113 | } |
114 | } else { |
115 | unset($this->overview, $this->ids); |
116 | $this->version = BANANA_SPOOL_VERSION; |
117 | } |
118 | |
119 | if ($first<=$last && $groupinfo[0]) { |
120 | $do_save = true; |
121 | $this->_updateSpool("$first-$last"); |
122 | } |
123 | |
124 | if ($do_save) { $this->_saveToFile(); } |
125 | |
126 | $this->_updateUnread($_since, $_display); |
127 | } |
128 | |
129 | function _readFromFile() |
130 | { |
131 | $file = $this->_spoolfile(); |
132 | if (file_exists($file)) { |
133 | $this = unserialize(file_get_contents($file)); |
134 | } |
135 | } |
136 | |
137 | function _saveToFile() |
138 | { |
139 | $file = $this->_spoolfile(); |
140 | uasort($this->overview, "spoolcompare"); |
141 | |
142 | $this->roots = Array(); |
143 | foreach($this->overview as $id=>$msg) { |
144 | if (is_null($msg->parent)) { |
145 | $this->roots[] = $id; |
146 | } |
147 | } |
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148 | |
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149 | file_put_contents($file, serialize($this)); |
150 | } |
151 | |
152 | function _spoolfile() |
153 | { |
154 | global $banana; |
155 | $url = parse_url($banana->host); |
156 | $file = $url['host'].'_'.$url['port'].'_'.$this->group; |
157 | return dirname(dirname(__FILE__)).'/spool/'.$file; |
158 | } |
159 | |
160 | function _updateSpool($arg) |
161 | { |
162 | global $banana; |
163 | $dates = array_map('strtotime', $banana->nntp->xhdr('Date', $arg)); |
164 | $subjects = array_map('headerdecode', $banana->nntp->xhdr('Subject', $arg)); |
165 | $froms = array_map('headerdecode', $banana->nntp->xhdr('From', $arg)); |
166 | $msgids = $banana->nntp->xhdr('Message-ID', $arg); |
167 | $refs = $banana->nntp->xhdr('References', $arg); |
168 | |
169 | if (is_array($this->ids)) { |
170 | $this->ids = array_merge($this->ids, array_flip($msgids)); |
171 | } else { |
172 | $this->ids = array_flip($msgids); |
173 | } |
174 | |
175 | foreach ($msgids as $id=>$msgid) { |
176 | $msg = new BananaSpoolHead($dates[$id], $subjects[$id], $froms[$id]); |
177 | $refs[$id] = str_replace('><', '> <', $refs[$id]); |
178 | $msgrefs = preg_split("/[ \t]/", strtr($refs[$id], $this->ids)); |
179 | $parents = preg_grep('/^\d+$/', $msgrefs); |
180 | $msg->parent = array_pop($parents); |
181 | $msg->parent_direct = preg_match('/^\d+$/', array_pop($msgrefs)); |
182 | |
183 | if (isset($this->overview[$id])) { |
184 | $msg->desc = $this->overview[$id]->desc; |
185 | $msg->children = $this->overview[$id]->children; |
186 | } |
187 | $this->overview[$id] = $msg; |
188 | |
189 | if ($p = $msg->parent) { |
190 | if (empty($this->overview[$p])) { |
191 | $this->overview[$p] = new BananaSpoolHead($dates[$p], $subjects[$p], $froms[$p], 1); |
192 | } |
193 | $this->overview[$p]->children[] = $id; |
194 | |
195 | while ($p) { |
196 | $this->overview[$p]->desc += $msg->desc; |
197 | $p = $this->overview[$p]->parent; |
198 | } |
199 | } |
200 | } |
201 | } |
202 | |
203 | function _updateUnread($since, $mode) |
204 | { |
205 | global $banana; |
206 | if (empty($since)) { return; } |
207 | |
208 | if (is_array($newpostsids = $banana->nntp->newnews($since, $this->group))) { |
209 | if (!is_array($this->ids)) { $this->ids = array(); } |
210 | $newpostsids = array_intersect($newpostsids, array_keys($this->ids)); |
211 | foreach ($newpostsids as $mid) { |
212 | $this->overview[$this->ids[$mid]]->isread = false; |
213 | $this->overview[$this->ids[$mid]]->descunread = 1; |
214 | $parentmid = $this->ids[$mid]; |
215 | while (isset($parentmid)) { |
216 | $this->overview[$parentmid]->descunread ++; |
217 | $parentmid = $this->overview[$parentmid]->parent; |
218 | } |
219 | } |
220 | |
221 | if (count($newpostsids)) { |
222 | switch ($mode) { |
223 | case 1: |
224 | foreach ($this->roots as $k=>$i) { |
225 | if ($this->overview[$i]->descunread==0) { |
226 | $this->killdesc($i); |
227 | unset($this->roots[$k]); |
228 | } |
229 | } |
230 | break; |
231 | } |
232 | } |
233 | } |
234 | } |
235 | |
236 | /** kill post and childrens |
237 | * @param $_id MSGNUM of post |
238 | */ |
239 | |
240 | function killdesc($_id) |
241 | { |
242 | if (sizeof($this->overview[$_id]->children)) { |
243 | foreach ($this->overview[$_id]->children as $c) { |
244 | $this->killdesc($c); |
245 | } |
246 | } |
247 | unset($this->overview[$_id]); |
248 | if (($msgid = array_search($_id, $this->ids)) !== false) { |
249 | unset($this->ids[$msgid]); |
250 | } |
251 | } |
252 | |
253 | /** delete a post from overview |
254 | * @param $_id MSGNUM of post |
255 | */ |
256 | |
257 | function delid($_id, $write=true) |
258 | { |
259 | if (isset($this->overview[$_id])) { |
260 | if (sizeof($this->overview[$_id]->parent)) { |
261 | $this->overview[$this->overview[$_id]->parent]->children = |
262 | array_diff($this->overview[$this->overview[$_id]->parent]->children, array($_id)); |
263 | if (sizeof($this->overview[$_id]->children)) { |
264 | $this->overview[$this->overview[$_id]->parent]->children = |
265 | array_merge($this->overview[$this->overview[$_id]->parent]->children, $this->overview[$_id]->children); |
266 | foreach ($this->overview[$_id]->children as $c) { |
267 | $this->overview[$c]->parent = $this->overview[$_id]->parent; |
268 | $this->overview[$c]->parent_direct = false; |
269 | } |
270 | } |
271 | $p = $this->overview[$_id]->parent; |
272 | while ($p) { |
273 | $this->overview[$p]->desc--; |
274 | $p = $this->overview[$p]->parent; |
275 | } |
276 | } elseif (sizeof($this->overview[$_id]->children)) { |
277 | foreach ($this->overview[$_id]->children as $c) { |
278 | $this->overview[$c]->parent = null; |
279 | } |
280 | } |
281 | unset($this->overview[$_id]); |
282 | $msgid = array_search($_id, $this->ids); |
283 | if ($msgid) { |
284 | unset($this->ids[$msgid]); |
285 | } |
286 | |
287 | if ($write) { $this->_saveToFile(); } |
288 | } |
289 | } |
290 | |
291 | /** displays children tree of a post |
292 | * @param $_id INTEGER MSGNUM of post |
293 | * @param $_index INTEGER linear number of post in the tree |
294 | * @param $_first INTEGER linear number of first post displayed |
295 | * @param $_last INTEGER linear number of last post displayed |
296 | * @param $_ref STRING MSGNUM of current post |
297 | * @param $_pfx_node STRING prefix used for current node |
298 | * @param $_pfx_end STRING prefix used for children of current node |
299 | * @param $_head BOOLEAN true if first post in thread |
300 | */ |
301 | |
302 | function _to_html($_id, $_index, $_first=0, $_last=0, $_ref="", $_pfx_node="", $_pfx_end="", $_head=true) |
303 | { |
304 | $spfx_f = '<img src="img/k1.gif" height="21" width="9" alt="o" />'; |
305 | $spfx_n = '<img src="img/k2.gif" height="21" width="9" alt="*" />'; |
306 | $spfx_Tnd = '<img src="img/T-direct.gif" height="21" width="12" alt="+" />'; |
307 | $spfx_Lnd = '<img src="img/L-direct.gif" height="21" width="12" alt="`" />'; |
308 | $spfx_snd = '<img src="img/s-direct.gif" height="21" width="5" alt="-" />'; |
309 | $spfx_T = '<img src="img/T.gif" height="21" width="12" alt="+" />'; |
310 | $spfx_L = '<img src="img/L.gif" height="21" width="12" alt="`" />'; |
311 | $spfx_s = '<img src="img/s.gif" height="21" width="5" alt="-" />'; |
312 | $spfx_e = '<img src="img/e.gif" height="21" width="12" alt=" " />'; |
313 | $spfx_I = '<img src="img/I.gif" height="21" width="12"alt="|" />'; |
314 | |
315 | if ($_index + $this->overview[$_id]->desc < $_first || $_index > $_last) { |
316 | return; |
317 | } |
318 | |
319 | $res = ''; |
320 | |
321 | if ($_index>=$_first) { |
322 | $hc = empty($this->overview[$_id]->children); |
323 | |
324 | $res .= '<tr class="'.($_index%2?'pair':'impair').($this->overview[$_id]->isread?'':' new')."\">\n"; |
325 | $res .= "<td class='date'>".fancyDate($this->overview[$_id]->date)." </td>\n"; |
326 | $res .= "<td class='subj'>" |
327 | ."<div class='tree'>$_pfx_node".($hc?($_head?$spfx_f:($this->overview[$_id]->parent_direct?$spfx_s:$spfx_snd)):$spfx_n) |
328 | ."</div>"; |
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329 | $subject = $this->overview[$_id]->subject; |
330 | if (strlen($subject) == 0) { |
331 | $subject = _b_('(pas de sujet)'); |
332 | } |
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333 | if ($_index == $_ref) { |
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334 | $res .= '<span class="cur">'.htmlentities($subject).'</span>'; |
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335 | } else { |
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336 | $res .= "<a href='?group={$this->group}&artid=$_id'>".htmlentities($subject).'</a>'; |
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337 | } |
338 | $res .= "</td>\n<td class='from'>".formatFrom($this->overview[$_id]->from)."</td>\n</tr>"; |
339 | |
340 | if ($hc) { return $res; } |
341 | } |
342 | |
343 | $_index ++; |
344 | |
345 | $children = $this->overview[$_id]->children; |
346 | while ($child = array_shift($children)) { |
347 | if ($_index > $_last) { return $res; } |
348 | if ($_index+$this->overview[$child]->desc >= $_first) { |
349 | if (sizeof($children)) { |
350 | $res .= $this->_to_html($child, $_index, $_first, $_last, $_ref, |
351 | $_pfx_end.($this->overview[$child]->parent_direct?$spfx_T:$spfx_Tnd), |
352 | $_pfx_end.$spfx_I, false); |
353 | } else { |
354 | $res .= $this->_to_html($child, $_index, $_first, $_last, $_ref, |
355 | $_pfx_end.($this->overview[$child]->parent_direct?$spfx_L:$spfx_Lnd), |
356 | $_pfx_end.$spfx_e, false); |
357 | } |
358 | } |
359 | $_index += $this->overview[$child]->desc; |
360 | } |
361 | |
362 | return $res; |
363 | } |
364 | |
365 | /** Displays overview |
366 | * @param $_first INTEGER MSGNUM of first post |
367 | * @param $_last INTEGER MSGNUM of last post |
368 | * @param $_ref STRING MSGNUM of current/selectionned post |
369 | */ |
370 | |
371 | function to_html($_first=0, $_last=0, $_ref = null) |
372 | { |
373 | $res = '<table class="bicol banana_thread" cellpadding="0" cellspacing="0">'; |
374 | |
375 | if (is_null($_ref)) { |
376 | $res .= '<tr><th>'._b_('Date').'</th>'; |
377 | $res .= '<th>'._b_('Sujet').'</th>'; |
378 | $res .= '<th>'._b_('Auteur').'</th></tr>'; |
379 | } |
380 | |
381 | $index = 1; |
382 | if (sizeof($this->overview)) { |
383 | foreach ($this->roots as $id) { |
384 | $res .= $this->_to_html($id, $index, $_first, $_last, $_ref); |
385 | $index += $this->overview[$id]->desc ; |
386 | if ($index > $_last) { break; } |
387 | } |
388 | } else { |
389 | $res .= '<tr><td colspan="3">'._b_('Aucun message dans ce forum').'</td></tr>'; |
390 | } |
391 | |
392 | return $res .= '</table>'; |
393 | } |
394 | |
395 | /** computes linear post index |
396 | * @param $_id INTEGER MSGNUM of post |
397 | * @return INTEGER linear index of post |
398 | */ |
399 | |
400 | function getndx($_id) |
401 | { |
402 | $ndx = 1; |
403 | $id_cur = $_id; |
404 | while (true) { |
405 | $id_parent = $this->overview[$id_cur]->parent; |
406 | if (is_null($id_parent)) break; |
407 | $pos = array_search($id_cur, $this->overview[$id_parent]->children); |
408 | |
409 | for ($i = 0; $i < $pos ; $i++) { |
410 | $ndx += $this->overview[$this->overview[$id_parent]->children[$i]]->desc; |
411 | } |
412 | $ndx++; //noeud père |
413 | |
414 | $id_cur = $id_parent; |
415 | } |
416 | |
417 | foreach ($this->roots as $i) { |
418 | if ($i==$id_cur) { |
419 | break; |
420 | } |
421 | $ndx += $this->overview[$i]->desc; |
422 | } |
423 | return $ndx; |
424 | } |
425 | } |
426 | |
427 | ?> |