4 * BBS View renderer module for WebCit
6 * Note: we briefly had a dynamic UI for this. I thought it was cool, but
7 * it was not received well by the user community. If you want to play
8 * with it, go get r8256 of bbsview_renderer.c and have fun.
10 * Copyright (c) 1996-2010 by the citadel.org team
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 3 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 #include "webserver.h"
34 * Data which gets passed around between the various functions in this module
38 long *msgs; /* Array of msgnums for messages we are displaying */
39 int num_msgs; /* Number of msgnums stored in 'msgs' */
40 long lastseen; /* The number of the last seen message in this room */
41 int alloc_msgs; /* Currently allocated size of array */
42 int requested_page; /* Which page number did the user request? */
43 int num_pages; /* Total number of pages in this room */
48 * Attempt to determine the closest thing to the "last seen message number" using the
49 * results of the GTSN command
51 long bbsview_get_last_seen(void)
56 serv_getln(buf, sizeof buf);
59 char *comma_pos = strchr(buf, ','); /* kill first comma and everything to its right */
64 char *colon_pos = strchr(buf, ':'); /* kill first colon and everything to its left */
66 strcpy(buf, ++colon_pos);
76 * Entry point for message read operations.
78 int bbsview_GetParamsGetServerCall(SharedMessageStatus *Stat,
84 struct bbsview *BBS = malloc(sizeof(struct bbsview));
85 memset(BBS, 0, sizeof(struct bbsview));
88 Stat->startmsg = -1; /* not used here */
89 Stat->sortit = 1; /* not used here */
90 Stat->num_displayed = DEFAULT_MAXMSGS; /* not used here */
91 BBS->requested_page = 0;
92 BBS->lastseen = bbsview_get_last_seen();
94 /* If a specific page was requested, make sure we go there */
95 if (havebstr("page")) {
96 BBS->requested_page = ibstr("page");
99 /* Otherwise, if this is a "read new" operation, make sure we start on the page
100 * containing the first new message
102 else if (oper == 3) {
103 BBS->requested_page = (-3);
106 if (havebstr("maxmsgs")) {
107 Stat->maxmsgs = ibstr("maxmsgs");
109 if (Stat->maxmsgs == 0) Stat->maxmsgs = DEFAULT_MAXMSGS;
111 /* perform a "read all" call to fetch the message list -- we'll cut it down later */
112 rlid[2].cmd(cmd, len);
119 * This function is called for every message in the list.
121 int bbsview_LoadMsgFromServer(SharedMessageStatus *Stat,
123 message_summary* Msg,
127 struct bbsview *BBS = (struct bbsview *) *ViewSpecific;
129 if (BBS->alloc_msgs == 0) {
130 BBS->alloc_msgs = 1000;
131 BBS->msgs = malloc(BBS->alloc_msgs * sizeof(long));
132 memset(BBS->msgs, 0, (BBS->alloc_msgs * sizeof(long)) );
135 /* Check our buffer size */
136 if (BBS->num_msgs >= BBS->alloc_msgs) {
137 BBS->alloc_msgs *= 2;
138 BBS->msgs = realloc(BBS->msgs, (BBS->alloc_msgs * sizeof(long)));
139 memset(&BBS->msgs[BBS->num_msgs], 0, ((BBS->alloc_msgs - BBS->num_msgs) * sizeof(long)) );
142 BBS->msgs[BBS->num_msgs++] = Msg->msgnum;
148 int bbsview_sortfunc(const void *s1, const void *s2) {
155 if (l1 > l2) return(+1);
156 if (l1 < l2) return(-1);
161 int bbsview_RenderView_or_Tail(SharedMessageStatus *Stat,
165 struct bbsview *BBS = (struct bbsview *) *ViewSpecific;
172 wc_printf("<div class=\"fix_scrollbar_bug\">");
174 if (Stat->nummsgs > 0) {
175 lprintf(9, "sorting %d messages\n", BBS->num_msgs);
176 qsort(BBS->msgs, (size_t)(BBS->num_msgs), sizeof(long), bbsview_sortfunc);
179 if ((BBS->num_msgs % Stat->maxmsgs) == 0) {
180 BBS->num_pages = BBS->num_msgs / Stat->maxmsgs;
183 BBS->num_pages = (BBS->num_msgs / Stat->maxmsgs) + 1;
186 /* If the requested page number is "whichever page on which new messages start"
187 * then change that to an actual page number now.
189 if (BBS->requested_page == (-3)) {
190 if (BBS->num_msgs == 0) {
191 BBS->requested_page = 0;
194 for (i=0; i<BBS->num_msgs; ++i) {
196 (BBS->msgs[i] > BBS->lastseen)
197 && ( (i == 0) || (BBS->msgs[i-1] <= BBS->lastseen) )
199 BBS->requested_page = (i / Stat->maxmsgs) ;
205 /* Still set to -3 ? If so, that probably means that there are no new messages,
206 * so we'll go to the *end* of the final page.
208 if (BBS->requested_page == (-3)) {
209 if (BBS->num_msgs == 0) {
210 BBS->requested_page = 0;
213 BBS->requested_page = BBS->num_pages - 1;
217 /* keep the requested page within bounds */
218 if (BBS->requested_page < 0) BBS->requested_page = 0;
219 if (BBS->requested_page >= BBS->num_pages) BBS->requested_page = BBS->num_pages - 1;
221 start_index = BBS->requested_page * Stat->maxmsgs;
222 if (start_index < 0) start_index = 0;
223 end_index = start_index + Stat->maxmsgs - 1;
225 for (seq = 0; seq < 3; ++seq) { /* cheap & sleazy way of rendering the page numbers twice */
227 if ( (seq == 1) && (Stat->nummsgs > 0)) {
228 /* display the selected range of messages */
230 for (i=start_index; (i<=end_index && i<BBS->num_msgs); ++i) {
232 (BBS->msgs[i] > BBS->lastseen)
233 && ( (i == 0) || (BBS->msgs[i-1] <= BBS->lastseen) )
235 /* new messages start here */
236 do_template("start_of_new_msgs", NULL);
237 StrBufAppendPrintf(WC->trailing_javascript, "location.href=\"#newmsgs\";\n");
239 if (BBS->msgs[i] > 0L) {
240 read_message(WC->WBuf, HKEY("view_message"), BBS->msgs[i], NULL, &Mime);
243 (i == (BBS->num_msgs - 1))
244 && (BBS->msgs[i] <= BBS->lastseen)
246 /* no new messages */
247 do_template("no_new_msgs", NULL);
248 StrBufAppendPrintf(WC->trailing_javascript, "location.href=\"#nonewmsgs\";\n");
253 else if ( (seq == 0) || (seq == 2) ) {
254 /* Display the selecto-bar with the page numbers */
256 wc_printf("<div class=\"moreprompt\">");
257 wc_printf(_("Go to page: "));
260 int last = BBS->num_pages - 1;
262 for (i=0; i<=last; ++i) {
267 || (i == BBS->requested_page)
269 ((BBS->requested_page - i) < RANGE)
270 && ((BBS->requested_page - i) > (0 - RANGE))
276 && (last - BBS->requested_page > RANGE)
278 wc_printf("... ");
280 if (i == BBS->requested_page) {
284 wc_printf("<a href=\"readfwd?page=%d\">", i);
285 wc_printf("<span class=\"moreprompt_link\">");
289 && (BBS->requested_page > (RANGE + 1))
291 wc_printf(_("First"));
295 && (last - BBS->requested_page > RANGE)
297 wc_printf(_("Last"));
300 wc_printf("%d", i + 1); // change to one-based for display
302 if (i == BBS->requested_page) {
306 wc_printf("</span>");
311 && (BBS->requested_page > (RANGE + 1))
313 wc_printf(" ...");
320 wc_printf("</div>\n");
324 wc_printf("</div>\n");
329 int bbsview_Cleanup(void **ViewSpecific)
331 struct bbsview *BBS = (struct bbsview *) *ViewSpecific;
333 if (BBS->alloc_msgs != 0) {
344 InitModule_BBSVIEWRENDERERS
347 RegisterReadLoopHandlerset(
349 bbsview_GetParamsGetServerCall,
352 bbsview_LoadMsgFromServer,
353 bbsview_RenderView_or_Tail,