X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=scripts%2Fpage.ml;h=b82c7ccdc46b7c19370be2066888af597f1cf4f4;hb=65966a769fea12308cf5a1bccee53d80483ee444;hp=7e2f02d6ac0fbe85407a0e2c52b149d979d35cb7;hpb=ae40d142ea634f9bd4e64f4f5d333021eefaf05b;p=cocanwiki.git diff --git a/scripts/page.ml b/scripts/page.ml index 7e2f02d..b82c7cc 100644 --- a/scripts/page.ml +++ b/scripts/page.ml @@ -1,7 +1,7 @@ (* COCANWIKI - a wiki written in Objective CAML. * Written by Richard W.M. Jones . * 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 @@ -25,15 +25,14 @@ open Cgi 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 @@ -57,31 +56,41 @@ let run r (q : cgi) (dbh : Dbi.connection) hostid ({ 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 , 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 @@ -175,37 +184,56 @@ let run r (q : cgi) (dbh : Dbi.connection) hostid 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. *) @@ -262,22 +290,83 @@ let run r (q : cgi) (dbh : Dbi.connection) hostid 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 ... *) @@ -290,12 +379,11 @@ let run r (q : cgi) (dbh : Dbi.connection) hostid 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. *) @@ -314,13 +402,8 @@ let run r (q : cgi) (dbh : Dbi.connection) hostid 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