+++ /dev/null
-/*
- * Blog view renderer module for WebCit
- *
- * Copyright (c) 1996-2012 by the citadel.org team
- *
- * This program is open source software. You can redistribute it and/or
- * modify it under the terms of the GNU General Public License, version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include "webcit.h"
-#include "webserver.h"
-#include "dav.h"
-
-CtxType CTX_BLOGPOST = CTX_NONE;
-
-typedef struct __BLOG {
- HashList *BLOGPOSTS;
- long p;
- int gotonext;
- long firstp;
- long maxp;
- StrBuf *Charset;
- StrBuf *Buf;
- const StrBuf *FilterTag;
-} BLOG;
-
-/*
- * Array type for a blog post. The first message is the post; the rest are comments
- */
-typedef struct _blogpost {
- int top_level_id;
- long *msgs; /* Array of msgnums for messages we are displaying */
- int num_msgs; /* Number of msgnums stored in 'msgs' */
- int alloc_msgs; /* Currently allocated size of array */
- int unread_oments;
-}blogpost;
-
-
-/*
- * XML sitemap generator -- go through the message list for a Blog room
- */
-void sitemap_do_blog(void) {
- wcsession *WCC = WC;
- blogpost oneBP;
- int num_msgs = 0;
- int i;
- SharedMessageStatus Stat;
- message_summary *Msg = NULL;
- StrBuf *Buf = NewStrBuf();
- StrBuf *FoundCharset = NewStrBuf();
- WCTemplputParams SubTP;
-
- memset(&Stat, 0, sizeof Stat);
- memset(&oneBP, 0, sizeof(blogpost));
- memset(&SubTP, 0, sizeof(WCTemplputParams));
- StackContext(NULL, &SubTP, &oneBP, CTX_BLOGPOST, 0, NULL);
-
- Stat.maxload = INT_MAX;
- Stat.lowest_found = (-1);
- Stat.highest_found = (-1);
- num_msgs = load_msg_ptrs("MSGS ALL", NULL, NULL, &Stat, NULL, NULL, NULL, NULL, 0);
- if (num_msgs < 1) return;
-
- for (i=0; i<num_msgs; ++i) {
- Msg = GetMessagePtrAt(i, WCC->summ);
- if (Msg != NULL) {
- ReadOneMessageSummary(Msg, FoundCharset, Buf);
- /* Show only top level posts, not comments */
- if ((Msg->reply_inreplyto_hash != 0) && (Msg->reply_references_hash == 0)) {
- oneBP.top_level_id = Msg->reply_inreplyto_hash;
- DoTemplate(HKEY("view_blog_sitemap"), WCC->WBuf, &SubTP);
- }
- }
- }
- UnStackContext(&SubTP);
- FreeStrBuf(&Buf);
- FreeStrBuf(&FoundCharset);
-}
-
-
-
-/*
- * Generate a permalink for a post
- * (Call with NULL arguments to make this function wcprintf() the permalink
- * instead of writing it to the template)
- */
-void tmplput_blog_toplevel_id(StrBuf *Target, WCTemplputParams *TP) {
- blogpost *bp = (blogpost*) CTX(CTX_BLOGPOST);
- char buf[SIZ];
- snprintf(buf, SIZ, "%d", bp->top_level_id);
- StrBufAppendTemplateStr(Target, TP, buf, 0);
-}
-
-void tmplput_blog_comment_count(StrBuf *Target, WCTemplputParams *TP) {
- blogpost *bp = (blogpost*) CTX(CTX_BLOGPOST);
- char buf[SIZ];
- snprintf(buf, SIZ, "%d", bp->num_msgs -1);
- StrBufAppendTemplateStr(Target, TP, buf, 0);
-}
-void tmplput_blog_comment_unread_count(StrBuf *Target, WCTemplputParams *TP) {
- blogpost *bp = (blogpost*) CTX(CTX_BLOGPOST);
- char buf[SIZ];
- snprintf(buf, SIZ, "%d", bp->unread_oments);
- StrBufAppendTemplateStr(Target, TP, buf, 0);
-}
-
-
-
-/*
- * Render a single blog post and (optionally) its comments
- */
-void blogpost_render(blogpost *bp, int with_comments, WCTemplputParams *TP)
-{
- wcsession *WCC = WC;
- WCTemplputParams SubTP;
- const StrBuf *Mime;
- int i;
-
- memset(&SubTP, 0, sizeof(WCTemplputParams));
- StackContext(TP, &SubTP, bp, CTX_BLOGPOST, 0, NULL);
-
- /* Always show the top level post, unless we somehow ended up with an empty list */
- if (bp->num_msgs > 0) {
- read_message(WC->WBuf, HKEY("view_blog_post"), bp->msgs[0], NULL, &Mime, TP);
- }
-
- if (with_comments) {
- /* Show any existing comments, then offer the comment box */
- DoTemplate(HKEY("view_blog_show_commentlink"), WCC->WBuf, &SubTP);
-
- for (i=1; i<bp->num_msgs; ++i) {
- read_message(WC->WBuf, HKEY("view_blog_comment"), bp->msgs[i], NULL, &Mime, &SubTP);
- }
- DoTemplate(HKEY("view_blog_comment_box"), WCC->WBuf, &SubTP);
- }
-
- else {
- /* Show only the number of comments */
- DoTemplate(HKEY("view_blog_show_no_comments"), WCC->WBuf, &SubTP);
- }
- UnStackContext(&SubTP);
-}
-
-
-/*
- * Destructor for "blogpost"
- */
-void blogpost_destroy(blogpost *bp) {
- if (bp->alloc_msgs > 0) {
- free(bp->msgs);
- }
- free(bp);
-}
-
-
-/*
- * Entry point for message read operations.
- */
-int blogview_GetParamsGetServerCall(SharedMessageStatus *Stat,
- void **ViewSpecific,
- long oper,
- char *cmd,
- long len,
- char *filter,
- long flen)
-{
- BLOG *BL = (BLOG*) malloc(sizeof(BLOG));
- BL->BLOGPOSTS = NewHash(1, lFlathash);
-
- /* are we looking for a specific post? */
- BL->p = lbstr("p");
- BL->gotonext = havebstr("gotonext");
- BL->Charset = NewStrBuf();
- BL->Buf = NewStrBuf();
- BL->FilterTag = sbstr("FilterTag");
- BL->firstp = lbstr("firstp"); /* start reading at... */
- BL->maxp = lbstr("maxp"); /* max posts to show... */
- if (BL->maxp < 1) BL->maxp = 5; /* default; move somewhere else? */
- putlbstr("maxp", BL->maxp);
- *ViewSpecific = BL;
-
- Stat->startmsg = (-1); /* not used here */
- Stat->sortit = 1; /* not used here */
- Stat->num_displayed = DEFAULT_MAXMSGS; /* not used here */
- if (Stat->maxmsgs == 0) Stat->maxmsgs = DEFAULT_MAXMSGS;
-
- /* perform a "read all" call to fetch the message list -- we'll cut it down later */
- snprintf(cmd, len, "MSGS ALL||2|8\n");
-
- if (BL->gotonext)
- Stat->load_seen = 1;
- return 200;
-}
-
-
-int blogview_IdentifyBlogposts (StrBuf *Line,
- const char **pos,
- message_summary *Msg,
- StrBuf *ConversionBuffer,
- void **ViewSpecific)
-{
- BLOG *BL = (BLOG*) *ViewSpecific;
- blogpost *bp = NULL;
-
- /* Stop processing if the viewer is only interested in a single post and
- * that message ID is neither the id nor the refs.
- */
- if ((BL->p != 0) &&
- (BL->p != Msg->reply_inreplyto_hash) &&
- (BL->p != Msg->reply_references_hash)) {
- return 0;
- }
-
- if ((Msg->reply_references_hash == 0) &&
- (BL->FilterTag != NULL) &&
- (strstr(ChrPtr(Msg->EnvTo) , ChrPtr(BL->FilterTag)) == NULL)) {
- /* filtering for tags, blogpost doesn't fit. */
- return 0;
- }
-
- /*
- * build up a hashtable of the blogposts.
- */
- if (Msg->reply_references_hash == 0) {
- bp = malloc(sizeof(blogpost));
-
- if (bp == NULL) return 0;
-
- memset(bp, 0, sizeof (blogpost));
-
- bp->top_level_id = Msg->reply_inreplyto_hash;
- bp->alloc_msgs = 1000;
- bp->msgs = malloc(bp->alloc_msgs * sizeof(long));
- memset(bp->msgs, 0, (bp->alloc_msgs * sizeof(long)) );
-
- /* the first one is the blogpost itself, all subequent are comments. */
- bp->msgs[0] = Msg->msgnum;
- bp->num_msgs = 1;
-
- Put(BL->BLOGPOSTS,
- LKEY(Msg->reply_inreplyto_hash),
- bp,
- (DeleteHashDataFunc)blogpost_destroy);
- }
- /*
- * Comments will be handled on the next iteration.
- */
-
- return 1;
-}
-
-
-/*
- * This function is called for every message in the list.
- */
-int blogview_LoadMsgFromServer(SharedMessageStatus *Stat,
- void **ViewSpecific,
- message_summary* Msg,
- int is_new,
- int i)
-{
- blogpost *bp = NULL;
- BLOG *BL = (BLOG*) *ViewSpecific;
-
- if (Msg->reply_references_hash != 0) {
- /*
- * this is a comment. try to assign it to a blogpost.
- */
- GetHash(BL->BLOGPOSTS,
- LKEY(Msg->reply_references_hash),
- (void *)&bp);
-
- /*
- * Now we have a 'blogpost' to which we can add the comment. It's either the
- * blog post itself or a comment attached to it; either way, the code is the same from
- * this point onward.
- */
- if (bp != NULL) {
- if (bp->num_msgs >= bp->alloc_msgs) {
- bp->alloc_msgs *= 2;
- bp->msgs = realloc(bp->msgs, (bp->alloc_msgs * sizeof(long)));
- memset(&bp->msgs[bp->num_msgs], 0,
- ((bp->alloc_msgs - bp->num_msgs) * sizeof(long)) );
- }
- bp->msgs[bp->num_msgs++] = Msg->msgnum;
- if ((Msg->Flags & MSGFLAG_READ) != 0) {
- bp->unread_oments++;
- }
- }
- else {
- /*
- * Ok, this comment probably belongs to one of the blogposts
- * we ruled out by filters. don't load it.
- */
- return 200;
- }
- }
- return 200;
-}
-
-
-/*
- * Sort a list of 'struct blogpost' pointers by newest-to-oldest msgnum.
- * With big thanks to whoever wrote http://www.c.happycodings.com/Sorting_Searching/code14.html
- */
-static int blogview_sortfunc(const void *a, const void *b) {
- blogpost const *one = GetSearchPayload(a);
- blogpost const *two = GetSearchPayload(b);
-
- if ( one->msgs[0] > two->msgs[0] ) return(-1);
- if ( one->msgs[0] < two->msgs[0] ) return(+1);
- return(0);
-}
-
-
-/*
- * All blogpost entries are now in the hash list.
- * Sort them, select the desired range, and render what we want to see.
- */
-int blogview_render(SharedMessageStatus *Stat, void **ViewSpecific, long oper)
-{
- wcsession *WCC = WC;
- BLOG *BL = (BLOG*) *ViewSpecific;
- HashPos *it;
- const char *Key;
- blogpost *thisBlogpost;
- void *Data;
- long len;
- int num_blogposts = 0;
- int with_comments = 0;
- WCTemplputParams SubTP;
- WCTemplputParams StopSubTP;
- blogpost oneBP;
- long firstPOffset = 0;
- int count = 0;
- int totalCount = 0;
- StrBuf *PrevNext = NULL;
-
- num_blogposts = GetCount(BL->BLOGPOSTS);
- if (num_blogposts == 0) {
- /* Nothing to do... */
- return 0;
- }
- memset(&SubTP, 0, sizeof(WCTemplputParams));
- memset(&StopSubTP, 0, sizeof(WCTemplputParams));
- memset(&oneBP, 0, sizeof(blogpost));
-
- /* Comments are shown if we are only viewing a single blog post */
- with_comments = (BL->p != 0);
-
- it = GetNewHashPos(BL->BLOGPOSTS, 0);
-
- if ((BL->gotonext) && (BL->p == 0)) {
- /* did we come here via gotonext? lets find out whether
- * this blog has just one blogpost with new comments just display
- * this one.
- */
- blogpost *unread_bp = NULL;
- int unread_count = 0;
- while (GetNextHashPos(BL->BLOGPOSTS, it, &len, &Key, &Data)) {
- blogpost *one_bp = (blogpost *) Data;
- if (one_bp->unread_oments > 0) {
- unread_bp = one_bp;
- unread_count++;
- }
- }
- if (unread_count == 1) {
- blogpost_render(unread_bp, 1, NULL);/// TODO other than null?
-
- DeleteHashPos(&it);
- return 0;
- }
- }
-
- /* Now we have our array. It is ONLY an array of pointers. The objects to
- * which they point are still owned by the hash list.
- */
-
- /* get it into the right sort of order - blogposts may have been edited */
- SortByPayload(BL->BLOGPOSTS, blogview_sortfunc);
-
- /* Find the start post to display: */
- if (BL->firstp != 0) {
- /* Translate the firstpost id into an offset */
- RewindHashPos(BL->BLOGPOSTS, it, 0);
- while (GetNextHashPos(BL->BLOGPOSTS, it, &len, &Key, &Data)) {
- thisBlogpost = (blogpost *) Data;
- if (thisBlogpost->top_level_id == BL->firstp) {
- firstPOffset = count;
- break;
- }
- count ++;
- }
- }
-
- if ((num_blogposts > BL->maxp) || (firstPOffset != 0)){
- PrevNext = NewStrBuf();
- if (firstPOffset > 0) {
- const char *k;
- long len;
- long posPrev = 0;
- /* we now need to go up to maxp items back */
- if (firstPOffset > BL->maxp) {
- posPrev = firstPOffset - BL->maxp;
- }
- GetHashAt(BL->BLOGPOSTS, posPrev, &len, &k, &Data);
- thisBlogpost = (blogpost *) Data;
- StackContext(NULL, &SubTP, thisBlogpost, CTX_BLOGPOST, 0, NULL);
- DoTemplate(HKEY("view_blog_newer_posts"), PrevNext, &SubTP);
- }
- if (firstPOffset + BL->maxp <= num_blogposts) {
- const char *k;
- long len;
- long posNext = firstPOffset + BL->maxp;
- GetHashAt(BL->BLOGPOSTS, posNext, &len, &k, &Data);
- thisBlogpost = (blogpost *) Data;
- StackContext(NULL, &SubTP, thisBlogpost, CTX_BLOGPOST, 0, NULL);
- DoTemplate(HKEY("view_blog_older_posts"), PrevNext, &SubTP);
- }
- }
-
- StrBufAppendBuf(WCC->WBuf, PrevNext, 0);
- count = totalCount = 0;
- RewindHashPos(BL->BLOGPOSTS, it, 0);
-
- /* FIXME -- allow the user (or a default setting) to select a maximum number of posts to display */
- while (GetNextHashPos(BL->BLOGPOSTS, it, &len, &Key, &Data)) {
- thisBlogpost = (blogpost *) Data;
-
- /* allow the user to select a starting point in the list */
- if (totalCount < firstPOffset) {
- /* skip all till we found the first valid: */
- totalCount ++;
- continue;
- }
- if (count >= BL->maxp) {
- /* enough is enough. */
- break;
- }
- StackContext(NULL, &SubTP, thisBlogpost, CTX_BLOGPOST, 0, NULL);
- blogpost_render(thisBlogpost, with_comments, &SubTP);
- UnStackContext(&SubTP);
- count ++;
- totalCount ++;
- }
- StrBufAppendBuf(WCC->WBuf, PrevNext, 0);
- FreeStrBuf(&PrevNext);
- DeleteHashPos(&it);
-
- return(0);
-}
-
-
-int blogview_Cleanup(void **ViewSpecific)
-{
- BLOG *BL = (BLOG*) *ViewSpecific;
-
- FreeStrBuf(&BL->Buf);
- FreeStrBuf(&BL->Charset);
- DeleteHash(&BL->BLOGPOSTS);
- free(BL);
- wDumpContent(1);
- return 0;
-}
-
-
-void
-InitModule_BLOGVIEWRENDERERS
-(void)
-{
- const char* browseListFields[] = {
- "msgn",
- "nvto",
- "wefw",
- NULL
- };
- RegisterCTX(CTX_BLOGPOST);
-
- RegisterReadLoopHandlerset(
- VIEW_BLOG,
- blogview_GetParamsGetServerCall,
- NULL,
- NULL,
- blogview_IdentifyBlogposts,
- blogview_LoadMsgFromServer,
- blogview_render,
- blogview_Cleanup,
- browseListFields
- );
-
- RegisterNamespace("BLOG:TOPLEVEL:MSGID", 0, 0, tmplput_blog_toplevel_id, NULL, CTX_BLOGPOST);
- RegisterNamespace("BLOG:COMMENTS:COUNT", 0, 0, tmplput_blog_comment_count, NULL, CTX_BLOGPOST);
- RegisterNamespace("BLOG:COMMENTS:UNREAD:COUNT", 0, 0, tmplput_blog_comment_unread_count, NULL, CTX_BLOGPOST);
-}
projects / citadel.git / blobdiff