(* COCANWIKI - a wiki written in Objective CAML.
* Written by Richard W.M. Jones <rich@merjis.com>.
* Copyright (C) 2004 Merjis Ltd.
- * $Id: page.ml,v 1.26 2004/10/07 16:54:24 rich Exp $
+ * $Id: page.ml,v 1.39 2004/11/05 11:35:53 rich Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
open Printf
open ExtString
+open ExtList
open Cocanwiki
open Cocanwiki_template
open Cocanwiki_ok
open Cocanwiki_date
open Cocanwiki_server_settings
-
-(* Maximum level of redirection. *)
-let max_redirect = 4
+open Cocanwiki_links
type fp_status = FPOK of int * string * string * Dbi.datetime * bool
| FPRedirect of string
({ edit_anon = edit_anon;
view_anon = view_anon } as host)
user =
- let template_page = get_template dbh hostid "page.html" in
- let template_404 = get_template dbh hostid "page_404.html" in
-
let page = q#param "page" in
let page = if page = "" then "index" else page in
+ (* The main "page" template is split in two to improve the speed of
+ * delivery of the page. The very first part ("page_header.html")
+ * contains the page <head>, crucially including all the links to the
+ * stylesheets. We send this first and flush it out to the client so
+ * that the client can begin requesting stylesheets, background images
+ * and so on. After this we compose the main page ("page.html") and
+ * send it out second.
+ *)
+
+ let template_page_header =
+ get_template ~page dbh hostid "page_header.html" in
+ let template_page = get_template ~page dbh hostid "page.html" in
+
+ (* This is the simpler template for 404 pages. *)
+ let template_404 = get_template dbh hostid "page_404.html" in
+
(* Host-specific fields. *)
let sth = dbh#prepare_cached "select css is not null,
feedback_email is not null,
- mailing_list, search_box
+ mailing_list, navigation
from hosts where id = ?" in
sth#execute [`Int hostid];
- let has_host_css, has_feedback_email, mailing_list, search_box =
+ let has_host_css, has_feedback_email, mailing_list, navigation =
match sth#fetch1 () with
| [ `Bool has_host_css; `Bool has_feedback_email; `Bool mailing_list;
- `Bool search_box ] ->
- has_host_css, has_feedback_email, mailing_list, search_box
+ `Bool navigation ] ->
+ has_host_css, has_feedback_email, mailing_list, navigation
| _ -> assert false in
- (* Can the user edit? Manage users? etc. *)
+ (* User permissions. *)
let can_edit = can_edit host user in
let can_manage_users = can_manage_users host user in
- let can_manage_contacts = can_manage_contacts host user in
- let can_manage_site = can_manage_site host user in
- let can_edit_global_css = can_edit_global_css host user in
(* Do we have a stats page set up? *)
let has_stats = server_settings_stats_page dbh <> None in
let make_page title description pageid last_modified_date has_page_css
version page page' extension =
let t = template_page in
+ let th = template_page_header in
t#set "title" title;
+ th#set "title" title;
t#set "last_modified_date" last_modified_date;
(match description with
- None -> t#conditional "has_description" false
+ None -> th#conditional "has_description" false
| Some description ->
- t#conditional "has_description" true;
- t#set "description" description);
+ th#conditional "has_description" true;
+ th#set "description" description);
if page <> page' then (* redirection *) (
t#set "page" page';
+ th#set "page" page';
t#set "original_page" page; (* XXX title - get it from database *)
t#conditional "redirected" true
) else (
t#set "page" page;
+ th#set "page" page;
t#conditional "redirected" false
);
- t#conditional "has_host_css" has_host_css;
- t#conditional "has_page_css" has_page_css;
+ th#conditional "has_host_css" has_host_css;
+ th#conditional "has_page_css" has_page_css;
+
+ (* Are we showing an old version of the page? If so, warn. *)
+ (match version with
+ None ->
+ t#conditional "is_old_version" false;
+ th#conditional "is_old_version" false
+ | Some pageid ->
+ t#conditional "is_old_version" true;
+ th#conditional "is_old_version" true;
+ t#set "old_version" (string_of_int pageid);
+ th#set "old_version" (string_of_int pageid));
+
+ (* At this point, we can print out the header and flush it back to
+ * the user, allowing the browser to start fetching stylesheets
+ * and background images while we compose the page.
+ *)
+ q#header ();
+ print_string r th#to_string;
+ Request.rflush r;
t#conditional "has_feedback_email" has_feedback_email;
t#conditional "mailing_list" mailing_list;
- t#conditional "search_box" search_box;
+ t#conditional "navigation" navigation;
t#conditional "can_edit" can_edit;
t#conditional "can_manage_users" can_manage_users;
- t#conditional "can_manage_contacts" can_manage_contacts;
- t#conditional "can_manage_site" can_manage_site;
- t#conditional "can_edit_global_css" can_edit_global_css;
-
t#conditional "has_stats" has_stats;
(* Pull out the sections in this page. *)
t#table "sections" sections;
- (* Are we showing an old version of the page? If so, warn. *)
- (match version with
- None ->
- t#conditional "is_old_version" false
- | Some pageid ->
- t#conditional "is_old_version" true;
- t#set "old_version" (string_of_int pageid));
-
(* Login status. *)
(match user with
Anonymous ->
t#conditional "user_logged_in" false
- | User (_, username, _) ->
+ | User (_, username, _, _) ->
t#conditional "user_logged_in" true;
t#set "username" username);
+ (* If logged in, we want to update the recently_visited table. *)
+ if pageid <> None then (
+ match user with
+ | User (userid, _, _, _) ->
+ let sth = dbh#prepare_cached "delete from recently_visited
+ where hostid = ? and userid = ?
+ and url = ?" in
+ sth#execute [`Int hostid; `Int userid; `String page'];
+ let sth = dbh#prepare_cached
+ "insert into recently_visited (hostid, userid, url)
+ values (?, ?, ?)" in
+ sth#execute [`Int hostid; `Int userid; `String page'];
+ dbh#commit ()
+ | _ -> ()
+ );
+
+ (* Navigation links. *)
+ if navigation then (
+ let max_links = 18 in (* Show no more links than this. *)
+
+ (* What links here. *)
+ let wlh = what_links_here dbh hostid page' in
+ let wlh = List.take max_links wlh in
+ let wlh_urls = List.map fst wlh in (* Just the URLs ... *)
+
+ let rv =
+ match user with
+ | User (userid, _, _, _) ->
+ (* Recently visited URLs, but don't repeat any from the 'what
+ * links here' section, and don't link to self.
+ *)
+ let not_urls = page' :: wlh_urls in
+ let limit = max_links - List.length wlh_urls in
+ let qs = Dbi.placeholders (List.length not_urls) in
+ let sth =
+ dbh#prepare_cached
+ ("select rv.url, p.title, rv.visit_time
+ from recently_visited rv, pages p
+ where rv.hostid = ? and rv.userid = ?
+ and rv.url not in " ^ qs ^ "
+ and rv.hostid = p.hostid and rv.url = p.url
+ order by 3 desc
+ limit ?") in
+ let args = List.map (fun s -> `String s) not_urls in
+ sth#execute
+ ([`Int hostid; `Int userid] @ args @ [`Int limit]);
+ sth#map
+ (function [`String url; `String title; _] ->
+ url, title
+ | _ -> assert false)
+ | _ -> [] in
+
+ (* Links to page. *)
+ let f (page, title) = [ "page", Template.VarString page;
+ "title", Template.VarString title ] in
+ let table = List.map f wlh in
+ t#table "what_links_here" table;
+ t#conditional "has_what_links_here" (wlh <> []);
+
+ let table = List.map f rv in
+ t#table "recently_visited" table;
+ t#conditional "has_recently_visited" (rv <> []);
+
+ (* If both lists are empty (ie. an empty navigation box would
+ * appear), then disable navigation altogether.
+ *)
+ if wlh = [] && rv = [] then t#conditional "navigation" false
+ );
+
(* If we are coming from a search engine then we want to highlight
* search terms throughout the whole page ...
*)
let xhtml = highlight_search_terms xhtml search_terms "search_term" in
(* Deliver the page. *)
- q#header ();
- print_string r xhtml
+ ignore (print_string r xhtml)
with
Not_found ->
(* No referer / no search terms / not a search engine referer. *)
- q#template t
+ ignore (print_string r t#to_string)
in
(* This code generates 404 pages. *)
t#set "search_terms" search_terms;
t#conditional "has_host_css" has_host_css;
-
t#conditional "can_edit" can_edit;
t#conditional "can_manage_users" can_manage_users;
- t#conditional "can_manage_contacts" can_manage_contacts;
- t#conditional "can_manage_site" can_manage_site;
- t#conditional "can_edit_global_css" can_edit_global_css;
-
t#conditional "has_stats" has_stats;
q#template t
git.annexia.org / cocanwiki.git / blobdiff