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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 | |
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10 | if(!function_exists('file_put_contents')) { |
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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); |
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97 | if (!$groupinfo) { return null; } |
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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)) { |
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133 | $temp = unserialize(file_get_contents($file)); |
134 | foreach (get_object_vars($temp) as $key=>$val) { |
135 | $this->$key = $val; |
136 | } |
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137 | } |
138 | } |
139 | |
140 | function _saveToFile() |
141 | { |
142 | $file = $this->_spoolfile(); |
143 | uasort($this->overview, "spoolcompare"); |
144 | |
145 | $this->roots = Array(); |
146 | foreach($this->overview as $id=>$msg) { |
147 | if (is_null($msg->parent)) { |
148 | $this->roots[] = $id; |
149 | } |
150 | } |
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151 | |
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152 | file_put_contents($file, serialize($this)); |
153 | } |
154 | |
155 | function _spoolfile() |
156 | { |
157 | global $banana; |
158 | $url = parse_url($banana->host); |
159 | $file = $url['host'].'_'.$url['port'].'_'.$this->group; |
160 | return dirname(dirname(__FILE__)).'/spool/'.$file; |
161 | } |
162 | |
163 | function _updateSpool($arg) |
164 | { |
165 | global $banana; |
166 | $dates = array_map('strtotime', $banana->nntp->xhdr('Date', $arg)); |
167 | $subjects = array_map('headerdecode', $banana->nntp->xhdr('Subject', $arg)); |
168 | $froms = array_map('headerdecode', $banana->nntp->xhdr('From', $arg)); |
169 | $msgids = $banana->nntp->xhdr('Message-ID', $arg); |
170 | $refs = $banana->nntp->xhdr('References', $arg); |
171 | |
172 | if (is_array($this->ids)) { |
173 | $this->ids = array_merge($this->ids, array_flip($msgids)); |
174 | } else { |
175 | $this->ids = array_flip($msgids); |
176 | } |
177 | |
178 | foreach ($msgids as $id=>$msgid) { |
179 | $msg = new BananaSpoolHead($dates[$id], $subjects[$id], $froms[$id]); |
180 | $refs[$id] = str_replace('><', '> <', $refs[$id]); |
181 | $msgrefs = preg_split("/[ \t]/", strtr($refs[$id], $this->ids)); |
182 | $parents = preg_grep('/^\d+$/', $msgrefs); |
183 | $msg->parent = array_pop($parents); |
184 | $msg->parent_direct = preg_match('/^\d+$/', array_pop($msgrefs)); |
185 | |
186 | if (isset($this->overview[$id])) { |
187 | $msg->desc = $this->overview[$id]->desc; |
188 | $msg->children = $this->overview[$id]->children; |
189 | } |
190 | $this->overview[$id] = $msg; |
191 | |
192 | if ($p = $msg->parent) { |
193 | if (empty($this->overview[$p])) { |
194 | $this->overview[$p] = new BananaSpoolHead($dates[$p], $subjects[$p], $froms[$p], 1); |
195 | } |
196 | $this->overview[$p]->children[] = $id; |
197 | |
198 | while ($p) { |
199 | $this->overview[$p]->desc += $msg->desc; |
200 | $p = $this->overview[$p]->parent; |
201 | } |
202 | } |
203 | } |
204 | } |
205 | |
206 | function _updateUnread($since, $mode) |
207 | { |
208 | global $banana; |
209 | if (empty($since)) { return; } |
210 | |
211 | if (is_array($newpostsids = $banana->nntp->newnews($since, $this->group))) { |
212 | if (!is_array($this->ids)) { $this->ids = array(); } |
213 | $newpostsids = array_intersect($newpostsids, array_keys($this->ids)); |
214 | foreach ($newpostsids as $mid) { |
215 | $this->overview[$this->ids[$mid]]->isread = false; |
216 | $this->overview[$this->ids[$mid]]->descunread = 1; |
217 | $parentmid = $this->ids[$mid]; |
218 | while (isset($parentmid)) { |
219 | $this->overview[$parentmid]->descunread ++; |
220 | $parentmid = $this->overview[$parentmid]->parent; |
221 | } |
222 | } |
223 | |
224 | if (count($newpostsids)) { |
225 | switch ($mode) { |
226 | case 1: |
227 | foreach ($this->roots as $k=>$i) { |
228 | if ($this->overview[$i]->descunread==0) { |
229 | $this->killdesc($i); |
230 | unset($this->roots[$k]); |
231 | } |
232 | } |
233 | break; |
234 | } |
235 | } |
236 | } |
237 | } |
238 | |
239 | /** kill post and childrens |
240 | * @param $_id MSGNUM of post |
241 | */ |
242 | |
243 | function killdesc($_id) |
244 | { |
245 | if (sizeof($this->overview[$_id]->children)) { |
246 | foreach ($this->overview[$_id]->children as $c) { |
247 | $this->killdesc($c); |
248 | } |
249 | } |
250 | unset($this->overview[$_id]); |
251 | if (($msgid = array_search($_id, $this->ids)) !== false) { |
252 | unset($this->ids[$msgid]); |
253 | } |
254 | } |
255 | |
256 | /** delete a post from overview |
257 | * @param $_id MSGNUM of post |
258 | */ |
259 | |
260 | function delid($_id, $write=true) |
261 | { |
262 | if (isset($this->overview[$_id])) { |
263 | if (sizeof($this->overview[$_id]->parent)) { |
264 | $this->overview[$this->overview[$_id]->parent]->children = |
265 | array_diff($this->overview[$this->overview[$_id]->parent]->children, array($_id)); |
266 | if (sizeof($this->overview[$_id]->children)) { |
267 | $this->overview[$this->overview[$_id]->parent]->children = |
268 | array_merge($this->overview[$this->overview[$_id]->parent]->children, $this->overview[$_id]->children); |
269 | foreach ($this->overview[$_id]->children as $c) { |
270 | $this->overview[$c]->parent = $this->overview[$_id]->parent; |
271 | $this->overview[$c]->parent_direct = false; |
272 | } |
273 | } |
274 | $p = $this->overview[$_id]->parent; |
275 | while ($p) { |
276 | $this->overview[$p]->desc--; |
277 | $p = $this->overview[$p]->parent; |
278 | } |
279 | } elseif (sizeof($this->overview[$_id]->children)) { |
280 | foreach ($this->overview[$_id]->children as $c) { |
281 | $this->overview[$c]->parent = null; |
282 | } |
283 | } |
284 | unset($this->overview[$_id]); |
285 | $msgid = array_search($_id, $this->ids); |
286 | if ($msgid) { |
287 | unset($this->ids[$msgid]); |
288 | } |
289 | |
290 | if ($write) { $this->_saveToFile(); } |
291 | } |
292 | } |
293 | |
294 | /** displays children tree of a post |
295 | * @param $_id INTEGER MSGNUM of post |
296 | * @param $_index INTEGER linear number of post in the tree |
297 | * @param $_first INTEGER linear number of first post displayed |
298 | * @param $_last INTEGER linear number of last post displayed |
299 | * @param $_ref STRING MSGNUM of current post |
300 | * @param $_pfx_node STRING prefix used for current node |
301 | * @param $_pfx_end STRING prefix used for children of current node |
302 | * @param $_head BOOLEAN true if first post in thread |
303 | */ |
304 | |
305 | function _to_html($_id, $_index, $_first=0, $_last=0, $_ref="", $_pfx_node="", $_pfx_end="", $_head=true) |
306 | { |
307 | $spfx_f = '<img src="img/k1.gif" height="21" width="9" alt="o" />'; |
308 | $spfx_n = '<img src="img/k2.gif" height="21" width="9" alt="*" />'; |
309 | $spfx_Tnd = '<img src="img/T-direct.gif" height="21" width="12" alt="+" />'; |
310 | $spfx_Lnd = '<img src="img/L-direct.gif" height="21" width="12" alt="`" />'; |
311 | $spfx_snd = '<img src="img/s-direct.gif" height="21" width="5" alt="-" />'; |
312 | $spfx_T = '<img src="img/T.gif" height="21" width="12" alt="+" />'; |
313 | $spfx_L = '<img src="img/L.gif" height="21" width="12" alt="`" />'; |
314 | $spfx_s = '<img src="img/s.gif" height="21" width="5" alt="-" />'; |
315 | $spfx_e = '<img src="img/e.gif" height="21" width="12" alt=" " />'; |
316 | $spfx_I = '<img src="img/I.gif" height="21" width="12"alt="|" />'; |
317 | |
318 | if ($_index + $this->overview[$_id]->desc < $_first || $_index > $_last) { |
319 | return; |
320 | } |
321 | |
322 | $res = ''; |
323 | |
324 | if ($_index>=$_first) { |
325 | $hc = empty($this->overview[$_id]->children); |
326 | |
327 | $res .= '<tr class="'.($_index%2?'pair':'impair').($this->overview[$_id]->isread?'':' new')."\">\n"; |
328 | $res .= "<td class='date'>".fancyDate($this->overview[$_id]->date)." </td>\n"; |
329 | $res .= "<td class='subj'>" |
330 | ."<div class='tree'>$_pfx_node".($hc?($_head?$spfx_f:($this->overview[$_id]->parent_direct?$spfx_s:$spfx_snd)):$spfx_n) |
331 | ."</div>"; |
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332 | $subject = $this->overview[$_id]->subject; |
333 | if (strlen($subject) == 0) { |
334 | $subject = _b_('(pas de sujet)'); |
335 | } |
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336 | if ($_index == $_ref) { |
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337 | $res .= '<span class="cur">'.htmlentities($subject).'</span>'; |
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338 | } else { |
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339 | $res .= "<a href='?group={$this->group}&artid=$_id'>".htmlentities($subject).'</a>'; |
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340 | } |
341 | $res .= "</td>\n<td class='from'>".formatFrom($this->overview[$_id]->from)."</td>\n</tr>"; |
342 | |
343 | if ($hc) { return $res; } |
344 | } |
345 | |
346 | $_index ++; |
347 | |
348 | $children = $this->overview[$_id]->children; |
349 | while ($child = array_shift($children)) { |
350 | if ($_index > $_last) { return $res; } |
351 | if ($_index+$this->overview[$child]->desc >= $_first) { |
352 | if (sizeof($children)) { |
353 | $res .= $this->_to_html($child, $_index, $_first, $_last, $_ref, |
354 | $_pfx_end.($this->overview[$child]->parent_direct?$spfx_T:$spfx_Tnd), |
355 | $_pfx_end.$spfx_I, false); |
356 | } else { |
357 | $res .= $this->_to_html($child, $_index, $_first, $_last, $_ref, |
358 | $_pfx_end.($this->overview[$child]->parent_direct?$spfx_L:$spfx_Lnd), |
359 | $_pfx_end.$spfx_e, false); |
360 | } |
361 | } |
362 | $_index += $this->overview[$child]->desc; |
363 | } |
364 | |
365 | return $res; |
366 | } |
367 | |
368 | /** Displays overview |
369 | * @param $_first INTEGER MSGNUM of first post |
370 | * @param $_last INTEGER MSGNUM of last post |
371 | * @param $_ref STRING MSGNUM of current/selectionned post |
372 | */ |
373 | |
374 | function to_html($_first=0, $_last=0, $_ref = null) |
375 | { |
376 | $res = '<table class="bicol banana_thread" cellpadding="0" cellspacing="0">'; |
377 | |
378 | if (is_null($_ref)) { |
379 | $res .= '<tr><th>'._b_('Date').'</th>'; |
380 | $res .= '<th>'._b_('Sujet').'</th>'; |
381 | $res .= '<th>'._b_('Auteur').'</th></tr>'; |
382 | } |
383 | |
384 | $index = 1; |
385 | if (sizeof($this->overview)) { |
386 | foreach ($this->roots as $id) { |
387 | $res .= $this->_to_html($id, $index, $_first, $_last, $_ref); |
388 | $index += $this->overview[$id]->desc ; |
389 | if ($index > $_last) { break; } |
390 | } |
391 | } else { |
392 | $res .= '<tr><td colspan="3">'._b_('Aucun message dans ce forum').'</td></tr>'; |
393 | } |
394 | |
395 | return $res .= '</table>'; |
396 | } |
397 | |
398 | /** computes linear post index |
399 | * @param $_id INTEGER MSGNUM of post |
400 | * @return INTEGER linear index of post |
401 | */ |
402 | |
403 | function getndx($_id) |
404 | { |
405 | $ndx = 1; |
406 | $id_cur = $_id; |
407 | while (true) { |
408 | $id_parent = $this->overview[$id_cur]->parent; |
409 | if (is_null($id_parent)) break; |
410 | $pos = array_search($id_cur, $this->overview[$id_parent]->children); |
411 | |
412 | for ($i = 0; $i < $pos ; $i++) { |
413 | $ndx += $this->overview[$this->overview[$id_parent]->children[$i]]->desc; |
414 | } |
415 | $ndx++; //noeud père |
416 | |
417 | $id_cur = $id_parent; |
418 | } |
419 | |
420 | foreach ($this->roots as $i) { |
421 | if ($i==$id_cur) { |
422 | break; |
423 | } |
424 | $ndx += $this->overview[$i]->desc; |
425 | } |
426 | return $ndx; |
427 | } |
428 | } |
429 | |
430 | ?> |