+++ /dev/null
-/*
- * BBS View renderer module for WebCit
- *
- * Note: we briefly had a dynamic UI for this. I thought it was cool, but
- * it was not received well by the user community. If you want to play
- * with it, go get commit dcf99fe61379b78436c387ea3f89ebfd4ffaf635 of
- * bbsview_renderer.c and have fun.
- *
- * 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.
- */
-
-#define RANGE 5
-
-#include "webcit.h"
-#include "webserver.h"
-#include "dav.h"
-
-/*
- * Data which gets passed around between the various functions in this module
- *
- */
-struct bbsview {
- long *msgs; /* Array of msgnums for messages we are displaying */
- int num_msgs; /* Number of msgnums stored in 'msgs' */
- long lastseen; /* The number of the last seen message in this room */
- int alloc_msgs; /* Currently allocated size of array */
- int requested_page; /* Which page number did the user request? */
- int num_pages; /* Total number of pages in this room */
- long start_reading_at; /* Start reading at the page containing this message */
-};
-
-
-/*
- * Attempt to determine the closest thing to the "last seen message number" using the
- * results of the GTSN command
- */
-long bbsview_get_last_seen(void)
-{
- char buf[SIZ] = "0";
-
- serv_puts("GTSN");
- serv_getln(buf, sizeof buf);
- if (buf[0] == '2') {
- char *colon_pos;
- char *comma_pos;
-
- comma_pos = strchr(buf, ','); /* kill first comma and everything to its right */
- if (comma_pos) {
- *comma_pos = 0;
- }
-
- colon_pos = strchr(buf, ':'); /* kill first colon and everything to its left */
- if (colon_pos) {
- strcpy(buf, ++colon_pos);
- }
- }
-
- return(atol(buf));
-}
-
-
-
-/*
- * Entry point for message read operations.
- */
-int bbsview_GetParamsGetServerCall(SharedMessageStatus *Stat,
- void **ViewSpecific,
- long oper,
- char *cmd,
- long len,
- char *filter,
- long flen)
-{
- struct bbsview *BBS = malloc(sizeof(struct bbsview));
- memset(BBS, 0, sizeof(struct bbsview));
- *ViewSpecific = BBS;
-
- Stat->startmsg = (-1); /* not used here */
- Stat->sortit = 1; /* not used here */
- Stat->num_displayed = DEFAULT_MAXMSGS; /* not used here */
- BBS->requested_page = 0;
- BBS->lastseen = bbsview_get_last_seen();
- BBS->start_reading_at = 0;
-
- /* By default, the requested page is the first one. */
- if (havebstr("start_reading_at")) {
- BBS->start_reading_at = lbstr("start_reading_at");
- BBS->requested_page = (-4);
- }
-
- /* However, if we are asked to start with a specific message number, make sure
- * we start on the page containing that message
- */
-
- /* Or, if a specific page was requested, make sure we go there */
- else if (havebstr("page")) {
- BBS->requested_page = ibstr("page");
- }
-
- /* Otherwise, if this is a "read new" operation, make sure we start on the page
- * containing the first new message
- */
- else if (oper == 3) {
- BBS->requested_page = (-3);
- }
-
- if (havebstr("maxmsgs")) {
- Stat->maxmsgs = ibstr("maxmsgs");
- }
- if (Stat->maxmsgs == 0) Stat->maxmsgs = DEFAULT_MAXMSGS;
-
- /* perform a "read all" call to fetch the message list -- we'll cut it down later */
- rlid[2].cmd(cmd, len);
-
- return 200;
-}
-
-
-/*
- * This function is called for every message in the list.
- */
-int bbsview_LoadMsgFromServer(SharedMessageStatus *Stat,
- void **ViewSpecific,
- message_summary* Msg,
- int is_new,
- int i)
-{
- struct bbsview *BBS = (struct bbsview *) *ViewSpecific;
-
- if (BBS->alloc_msgs == 0) {
- BBS->alloc_msgs = 1000;
- BBS->msgs = malloc(BBS->alloc_msgs * sizeof(long));
- memset(BBS->msgs, 0, (BBS->alloc_msgs * sizeof(long)) );
- }
-
- /* Check our buffer size */
- if (BBS->num_msgs >= BBS->alloc_msgs) {
- BBS->alloc_msgs *= 2;
- BBS->msgs = realloc(BBS->msgs, (BBS->alloc_msgs * sizeof(long)));
- memset(&BBS->msgs[BBS->num_msgs], 0, ((BBS->alloc_msgs - BBS->num_msgs) * sizeof(long)) );
- }
-
- BBS->msgs[BBS->num_msgs++] = Msg->msgnum;
-
- return 200;
-}
-
-
-int bbsview_sortfunc(const void *s1, const void *s2) {
- long l1;
- long l2;
-
- l1 = *(long *)(s1);
- l2 = *(long *)(s2);
-
- if (l1 > l2) return(+1);
- if (l1 < l2) return(-1);
- return(0);
-}
-
-
-int bbsview_RenderView_or_Tail(SharedMessageStatus *Stat,
- void **ViewSpecific,
- long oper)
-{
- struct bbsview *BBS = (struct bbsview *) *ViewSpecific;
- int i;
- int seq;
- const StrBuf *Mime;
- int start_index = 0;
- int end_index = 0;
- int go_to_the_very_end = 0;
-
- if (Stat->nummsgs > 0) {
- syslog(LOG_DEBUG, "sorting %d messages\n", BBS->num_msgs);
- qsort(BBS->msgs, (size_t)(BBS->num_msgs), sizeof(long), bbsview_sortfunc);
- }
-
- if ((BBS->num_msgs % Stat->maxmsgs) == 0) {
- BBS->num_pages = BBS->num_msgs / Stat->maxmsgs;
- }
- else {
- BBS->num_pages = (BBS->num_msgs / Stat->maxmsgs) + 1;
- }
-
- /* If the requested page number is -4,
- * it means "whichever page on which msg#xxxxx starts"
- * Change to the page number which contains that message.
- */
- if (BBS->requested_page == (-4)) {
- if (BBS->num_msgs == 0) {
- BBS->requested_page = 0;
- }
- else {
- for (i=0; i<BBS->num_msgs; ++i) {
- if (
- (BBS->msgs[i] >= BBS->start_reading_at)
- && (BBS->requested_page == (-4))
- ) {
- BBS->requested_page = (i / Stat->maxmsgs) ;
- }
- }
- }
- }
-
- /* If the requested page number is -3,
- * it means "whichever page on which new messages start"
- * Change that to an actual page number now.
- */
- if (BBS->requested_page == (-3)) {
- if (BBS->num_msgs == 0) {
- /*
- * The room is empty; just start at the top and leave it there.
- */
- BBS->requested_page = 0;
- }
- else if (
- (BBS->num_msgs > 0)
- && (BBS->lastseen <= BBS->msgs[0])
- ) {
- /*
- * All messages are new; this is probably the user's first visit to the room,
- * so start at the last page instead of showing ancient history.
- */
- BBS->requested_page = BBS->num_pages - 1;
- go_to_the_very_end = 1;
- }
- else {
- /*
- * Some messages are old and some are new. Go to the start of new messages.
- */
- for (i=0; i<BBS->num_msgs; ++i) {
- if (
- (BBS->msgs[i] > BBS->lastseen)
- && ( (i == 0) || (BBS->msgs[i-1] <= BBS->lastseen) )
- ) {
- BBS->requested_page = (i / Stat->maxmsgs) ;
- }
- }
- }
- }
-
- /* Still set to -3 ? If so, that probably means that there are no new messages,
- * so we'll go to the *end* of the final page.
- */
- if (BBS->requested_page == (-3)) {
- if (BBS->num_msgs == 0) {
- BBS->requested_page = 0;
- }
- else {
- BBS->requested_page = BBS->num_pages - 1;
- }
- }
-
- /* keep the requested page within bounds */
- if (BBS->requested_page < 0) BBS->requested_page = 0;
- if (BBS->requested_page >= BBS->num_pages) BBS->requested_page = BBS->num_pages - 1;
-
- start_index = BBS->requested_page * Stat->maxmsgs;
- if (start_index < 0) start_index = 0;
- end_index = start_index + Stat->maxmsgs - 1;
-
- for (seq = 0; seq < 3; ++seq) { /* cheap & sleazy way of rendering the page numbers twice */
-
- if ( (seq == 1) && (Stat->nummsgs > 0)) {
- /* display the selected range of messages */
-
- for (i=start_index; (i<=end_index && i<BBS->num_msgs); ++i) {
- if (
- (BBS->msgs[i] > BBS->lastseen)
- && ( (i == 0) || (BBS->msgs[i-1] <= BBS->lastseen) )
- ) {
- /* new messages start here */
- do_template("start_of_new_msgs");
- if (!go_to_the_very_end) {
- StrBufAppendPrintf(WC->trailing_javascript, "location.href=\"#newmsgs\";\n");
- }
- }
- if (BBS->msgs[i] > 0L) {
- read_message(WC->WBuf, HKEY("view_message"), BBS->msgs[i], NULL, &Mime, NULL);
- }
- if (
- (i == (BBS->num_msgs - 1))
- && (BBS->msgs[i] <= BBS->lastseen)
- ) {
- /* no new messages */
- do_template("no_new_msgs");
- if (!go_to_the_very_end) {
- StrBufAppendPrintf(WC->trailing_javascript, "location.href=\"#nonewmsgs\";\n");
- }
- }
- }
- }
-
- else if ( (seq == 0) || (seq == 2) ) {
- int first;
- int last;
- /* Display the selecto-bar with the page numbers */
-
- wc_printf("<div class=\"moreprompt\">");
- if (seq == 2) {
- wc_printf("<a name=\"end_of_msgs\">");
- }
- wc_printf(_("Go to page: "));
- if (seq == 2) {
- wc_printf("</a>");
- }
-
- first = 0;
- last = BBS->num_pages - 1;
-
- for (i=0; i<=last; ++i) {
-
- if (
- (i == first)
- || (i == last)
- || (i == BBS->requested_page)
- || (
- ((BBS->requested_page - i) < RANGE)
- && ((BBS->requested_page - i) > (0 - RANGE))
- )
- ) {
-
- if (
- (i == last)
- && (last - BBS->requested_page > RANGE)
- ) {
- wc_printf("... ");
- }
- if (i == BBS->requested_page) {
- wc_printf("[");
- }
- else {
- wc_printf("<a href=\"readfwd?go=");
- urlescputs(ChrPtr(WC->CurRoom.name));
- wc_printf("?start_reading_at=%ld\">",
- BBS->msgs[i*Stat->maxmsgs]
- );
- /* wc_printf("?page=%d\">", i); */
- wc_printf("<span class=\"moreprompt_link\">");
- }
- if (
- (i == first)
- && (BBS->requested_page > (RANGE + 1))
- ) {
- wc_printf(_("First"));
- }
- else if (
- (i == last)
- && (last - BBS->requested_page > RANGE)
- ) {
- wc_printf(_("Last"));
- }
- else {
- wc_printf("%d", i + 1); /* change to one-based for display */
- }
- if (i == BBS->requested_page) {
- wc_printf("]");
- }
- else {
- wc_printf("</span>");
- wc_printf("</a>");
- }
- if (
- (i == first)
- && (BBS->requested_page > (RANGE + 1))
- ) {
- wc_printf(" ...");
- }
- if (i != last) {
- wc_printf(" ");
- }
- }
- }
- wc_printf("</div>\n");
- }
- }
-
- if (go_to_the_very_end) {
- StrBufAppendPrintf(WC->trailing_javascript, "location.href=\"#end_of_msgs\";\n");
- }
- return(0);
-}
-
-
-int bbsview_Cleanup(void **ViewSpecific)
-{
- struct bbsview *BBS = (struct bbsview *) *ViewSpecific;
-
- if (BBS->alloc_msgs != 0) {
- free(BBS->msgs);
- }
- free(BBS);
-
- wDumpContent(1);
- return 0;
-}
-
-
-void
-InitModule_BBSVIEWRENDERERS
-(void)
-{
- RegisterReadLoopHandlerset(
- VIEW_BBS,
- bbsview_GetParamsGetServerCall,
- NULL,
- NULL,
- NULL,
- bbsview_LoadMsgFromServer,
- bbsview_RenderView_or_Tail,
- bbsview_Cleanup,
- NULL
- );
-}
projects / citadel.git / blobdiff