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 * Array type for a blog post. The first message is the post; the rest are comments
31 long *msgs; /* Array of msgnums for messages we are displaying */
32 int num_msgs; /* Number of msgnums stored in 'msgs' */
33 int alloc_msgs; /* Currently allocated size of array */
38 * Generate a permalink for a post
39 * (Call with NULL arguments to make this function wcprintf() the permalink
40 * instead of writing it to the template)
42 void tmplput_blog_permalink(StrBuf *Target, WCTemplputParams *TP) {
45 strcpy(perma, "/readfwd?go=");
46 urlesc(&perma[strlen(perma)], sizeof(perma)-strlen(perma), (char *)ChrPtr(WC->CurRoom.name));
47 snprintf(&perma[strlen(perma)], sizeof(perma)-strlen(perma), "?p=%d", WC->bptlid);
49 wc_printf("%s", perma);
52 StrBufAppendPrintf(Target, "%s", perma);
58 * Destructor for 'struct blogpost' which does the rendering first.
59 * By rendering from here, we eliminate the need for a separate iterator, although
60 * we might run into trouble when we get around to displaying newest-to-oldest...
62 void blogpost_render_and_destroy(struct blogpost *bp) {
67 p = atoi(BSTR("p")); /* are we looking for a specific post? */
68 WC->bptlid = bp->top_level_id;
70 if ( ((p == 0) || (p == bp->top_level_id)) && (bp->num_msgs > 0) ) {
71 /* Show the top level post */
72 read_message(WC->WBuf, HKEY("view_blog_post"), bp->msgs[0], NULL, &Mime);
75 /* Show the number of comments */
76 wc_printf("<a href=\"readfwd?p=%d?go=", bp->top_level_id);
77 urlescputs(ChrPtr(WC->CurRoom.name));
78 wc_printf("#comments\">");
79 wc_printf(_("%d comments"), bp->num_msgs - 1);
80 wc_printf("</a> | <a href=\"");
81 tmplput_blog_permalink(NULL, NULL);
82 wc_printf("\">%s</a>", _("permalink"));
83 wc_printf("<br><br><br>\n");
85 else if (bp->num_msgs < 2) {
86 wc_printf(_("%d comments"), 0);
89 wc_printf("<a name=\"comments\"></a>\n");
90 wc_printf(_("%d comments"), bp->num_msgs - 1);
91 wc_printf(" | <a href=\"");
92 tmplput_blog_permalink(NULL, NULL);
93 wc_printf("\">%s</a>", _("permalink"));
95 for (i=1; i<bp->num_msgs; ++i) {
96 read_message(WC->WBuf, HKEY("view_blog_comment"), bp->msgs[i], NULL, &Mime);
102 if (bp->alloc_msgs > 0) {
106 /* offer the comment box */
107 if (p == bp->top_level_id) {
108 do_template("blog_comment_box");
116 * Data which gets returned from a call to blogview_learn_thread_references()
125 * Entry point for message read operations.
127 int blogview_GetParamsGetServerCall(SharedMessageStatus *Stat,
133 HashList *BLOG = NewHash(1, NULL);
134 *ViewSpecific = BLOG;
136 Stat->startmsg = (-1); /* not used here */
137 Stat->sortit = 1; /* not used here */
138 Stat->num_displayed = DEFAULT_MAXMSGS; /* not used here */
139 if (Stat->maxmsgs == 0) Stat->maxmsgs = DEFAULT_MAXMSGS;
141 /* perform a "read all" call to fetch the message list -- we'll cut it down later */
142 rlid[2].cmd(cmd, len);
149 * Given a 'struct blogpost' containing a msgnum, populate the id
150 * and refs fields by fetching them from the Citadel server
152 struct bltr blogview_learn_thread_references(long msgnum)
157 struct bltr bltr = { 0, 0 } ;
160 serv_printf("MSG0 %ld|1", msgnum); /* top level citadel headers only */
161 StrBuf_ServGetln(Buf);
162 if (GetServerStatus(Buf, NULL) == 1) {
163 while (len = StrBuf_ServGetln(Buf),
165 ((len != 3) || strcmp(ChrPtr(Buf), "000") )))
167 if (!strncasecmp(ChrPtr(Buf), "msgn=", 5)) {
168 StrBufCutLeft(Buf, 5);
169 bltr.id = abs(HashLittle(ChrPtr(Buf), StrLength(Buf)));
171 else if (!strncasecmp(ChrPtr(Buf), "wefw=", 5)) {
172 StrBufCutLeft(Buf, 5); /* trim the field name */
173 StrBufExtract_token(r, Buf, 0, '|');
174 bltr.refs = abs(HashLittle(ChrPtr(r), StrLength(r)));
185 * This function is called for every message in the list.
187 int blogview_LoadMsgFromServer(SharedMessageStatus *Stat,
189 message_summary* Msg,
193 HashList *BLOG = (HashList *) *ViewSpecific;
195 struct blogpost *bp = NULL;
197 b = blogview_learn_thread_references(Msg->msgnum);
199 /* FIXME an optimization here -- one we ought to perform -- is to exit this
200 * function immediately if the viewer is only interested in a single post and
201 * that message ID is neither the id nor the refs. Actually, that might *be*
202 * the way to display only a single message (with or without comments).
206 bp = malloc(sizeof(struct blogpost));
207 if (!bp) return(200);
208 memset(bp, 0, sizeof (struct blogpost));
209 bp->top_level_id = b.id;
210 Put(BLOG, (const char *)&b.id, sizeof(b.id), bp,
211 (DeleteHashDataFunc)blogpost_render_and_destroy);
214 GetHash(BLOG, (const char *)&b.refs , sizeof(b.refs), (void *)&bp);
218 * Now we have a 'struct blogpost' to which we can add a message. It's either the
219 * blog post itself or a comment attached to it; either way, the code is the same from
223 if (bp->alloc_msgs == 0) {
224 bp->alloc_msgs = 1000;
225 bp->msgs = malloc(bp->alloc_msgs * sizeof(long));
226 memset(bp->msgs, 0, (bp->alloc_msgs * sizeof(long)) );
228 if (bp->num_msgs >= bp->alloc_msgs) {
230 bp->msgs = realloc(bp->msgs, (bp->alloc_msgs * sizeof(long)));
231 memset(&bp->msgs[bp->num_msgs], 0,
232 ((bp->alloc_msgs - bp->num_msgs) * sizeof(long)) );
234 bp->msgs[bp->num_msgs++] = Msg->msgnum;
242 * Sort a list of 'struct blogpost' objects by newest-to-oldest msgnum.
244 int blogview_sortfunc(const void *s1, const void *s2) {
245 long *l1 = (long *)(s1);
246 long *l2 = (long *)(s2);
248 if (*l1 > *l2) return(-1);
249 if (*l1 < *l2) return(+1);
254 int blogview_render(SharedMessageStatus *Stat, void **ViewSpecific, long oper)
256 /* HashList *BLOG = (HashList *) *ViewSpecific; */
259 * No code needed here -- we render during disposition.
260 * Maybe this is the location where we want to handle pretty permalinks.
267 int blogview_Cleanup(void **ViewSpecific)
269 HashList *BLOG = (HashList *) *ViewSpecific;
278 InitModule_BLOGVIEWRENDERERS
281 RegisterReadLoopHandlerset(
283 blogview_GetParamsGetServerCall,
286 blogview_LoadMsgFromServer,
290 RegisterNamespace("BLOG:PERMALINK", 0, 0, tmplput_blog_permalink, NULL, CTX_NONE);