2 * Blog view renderer module for WebCit
4 * Copyright (c) 1996-2011 by the citadel.org team
6 * This program is open source software. You can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 3 of the
9 * License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "webserver.h"
27 * Generate a permalink for a post
28 * (Call with NULL arguments to make this function wcprintf() the permalink
29 * instead of writing it to the template)
31 void tmplput_blog_permalink(StrBuf *Target, WCTemplputParams *TP) {
34 strcpy(perma, "/readfwd?go=");
35 urlesc(&perma[strlen(perma)], sizeof(perma)-strlen(perma), (char *)ChrPtr(WC->CurRoom.name));
36 snprintf(&perma[strlen(perma)], sizeof(perma)-strlen(perma), "?p=%d", WC->bptlid);
38 wc_printf("%s", perma);
41 StrBufAppendPrintf(Target, "%s", perma);
47 * Destructor for 'struct blogpost' which does the rendering first.
48 * By rendering from here, we eliminate the need for a separate iterator, although
49 * we might run into trouble when we get around to displaying newest-to-oldest...
51 void blogpost_render_and_destroy(struct blogpost *bp) {
56 p = atoi(BSTR("p")); /* are we looking for a specific post? */
57 WC->bptlid = bp->top_level_id;
59 if ( ((p == 0) || (p == bp->top_level_id)) && (bp->num_msgs > 0) ) {
60 /* Show the top level post */
61 read_message(WC->WBuf, HKEY("view_blog_post"), bp->msgs[0], NULL, &Mime);
64 /* Show the number of comments */
65 wc_printf("<a href=\"readfwd?p=%d?go=", bp->top_level_id);
66 urlescputs(ChrPtr(WC->CurRoom.name));
67 wc_printf("#comments\">");
68 wc_printf(_("%d comments"), bp->num_msgs - 1);
69 wc_printf("</a> | <a href=\"");
70 tmplput_blog_permalink(NULL, NULL);
71 wc_printf("\">%s</a>", _("permalink"));
72 wc_printf("<br><br><br>\n");
74 else if (bp->num_msgs < 2) {
75 wc_printf(_("%d comments"), 0);
78 wc_printf("<a name=\"comments\"></a>\n");
79 wc_printf(_("%d comments"), bp->num_msgs - 1);
80 wc_printf(" | <a href=\"");
81 tmplput_blog_permalink(NULL, NULL);
82 wc_printf("\">%s</a>", _("permalink"));
84 for (i=1; i<bp->num_msgs; ++i) {
85 read_message(WC->WBuf, HKEY("view_blog_comment"), bp->msgs[i], NULL, &Mime);
91 if (bp->alloc_msgs > 0) {
95 /* offer the comment box */
96 if (p == bp->top_level_id) {
97 do_template("blog_comment_box");
105 * Entry point for message read operations.
107 int blogview_GetParamsGetServerCall(SharedMessageStatus *Stat,
113 HashList *BLOG = NewHash(1, NULL);
114 *ViewSpecific = BLOG;
116 Stat->startmsg = (-1); /* not used here */
117 Stat->sortit = 1; /* not used here */
118 Stat->num_displayed = DEFAULT_MAXMSGS; /* not used here */
119 if (Stat->maxmsgs == 0) Stat->maxmsgs = DEFAULT_MAXMSGS;
121 /* perform a "read all" call to fetch the message list -- we'll cut it down later */
122 rlid[2].cmd(cmd, len);
129 * Given a msgnum, populate the id and refs fields of
130 * a "struct bltr" by fetching them from the Citadel server
132 struct bltr blogview_learn_thread_references(long msgnum)
137 struct bltr bltr = { 0, 0 } ;
140 serv_printf("MSG0 %ld|1", msgnum); /* top level citadel headers only */
141 StrBuf_ServGetln(Buf);
142 if (GetServerStatus(Buf, NULL) == 1) {
143 while (len = StrBuf_ServGetln(Buf),
145 ((len != 3) || strcmp(ChrPtr(Buf), "000") )))
147 if (!strncasecmp(ChrPtr(Buf), "msgn=", 5)) {
148 StrBufCutLeft(Buf, 5);
149 bltr.id = ThreadIdHash(Buf);
151 else if (!strncasecmp(ChrPtr(Buf), "wefw=", 5)) {
152 StrBufCutLeft(Buf, 5); /* trim the field name */
153 StrBufExtract_token(r, Buf, 0, '|');
154 bltr.refs = ThreadIdHash(r);
165 * This function is called for every message in the list.
167 int blogview_LoadMsgFromServer(SharedMessageStatus *Stat,
169 message_summary* Msg,
173 HashList *BLOG = (HashList *) *ViewSpecific;
175 struct blogpost *bp = NULL;
177 b = blogview_learn_thread_references(Msg->msgnum);
179 /* FIXME an optimization here -- one we ought to perform -- is to exit this
180 * function immediately if the viewer is only interested in a single post and
181 * that message ID is neither the id nor the refs. Actually, that might *be*
182 * the way to display only a single message (with or without comments).
186 bp = malloc(sizeof(struct blogpost));
187 if (!bp) return(200);
188 memset(bp, 0, sizeof (struct blogpost));
189 bp->top_level_id = b.id;
190 Put(BLOG, (const char *)&b.id, sizeof(b.id), bp,
191 (DeleteHashDataFunc)blogpost_render_and_destroy);
194 GetHash(BLOG, (const char *)&b.refs , sizeof(b.refs), (void *)&bp);
198 * Now we have a 'struct blogpost' to which we can add a message. It's either the
199 * blog post itself or a comment attached to it; either way, the code is the same from
203 if (bp->alloc_msgs == 0) {
204 bp->alloc_msgs = 1000;
205 bp->msgs = malloc(bp->alloc_msgs * sizeof(long));
206 memset(bp->msgs, 0, (bp->alloc_msgs * sizeof(long)) );
208 if (bp->num_msgs >= bp->alloc_msgs) {
210 bp->msgs = realloc(bp->msgs, (bp->alloc_msgs * sizeof(long)));
211 memset(&bp->msgs[bp->num_msgs], 0,
212 ((bp->alloc_msgs - bp->num_msgs) * sizeof(long)) );
214 bp->msgs[bp->num_msgs++] = Msg->msgnum;
222 * Sort a list of 'struct blogpost' objects by newest-to-oldest msgnum.
223 int blogview_sortfunc(const void *s1, const void *s2) {
224 long *l1 = (long *)(s1);
225 long *l2 = (long *)(s2);
227 if (*l1 > *l2) return(-1);
228 if (*l1 < *l2) return(+1);
236 * We have to move the render code into this function because it needs to be sorted,
237 * and possibly culled to a specific number of messages or date range...
239 int blogview_render(SharedMessageStatus *Stat, void **ViewSpecific, long oper)
241 HashList *BLOG = (HashList *) *ViewSpecific;
248 it = GetNewHashPos(BLOG, 0);
249 while (GetNextHashPos(BLOG, it, &len, &Key, &Data)) {
250 bp = (struct blogpost *) Data;
251 wc_printf("Top level ID is %d\n", bp->top_level_id);
252 if (bp->num_msgs > 0) {
253 wc_printf("; top level msgnum is %ld", bp->msgs[0]);
263 int blogview_Cleanup(void **ViewSpecific)
265 HashList *BLOG = (HashList *) *ViewSpecific;
274 InitModule_BLOGVIEWRENDERERS
277 RegisterReadLoopHandlerset(
279 blogview_GetParamsGetServerCall,
282 blogview_LoadMsgFromServer,
286 RegisterNamespace("BLOG:PERMALINK", 0, 0, tmplput_blog_permalink, NULL, CTX_NONE);