зеркало из https://github.com/mozilla/pjs.git
152 строки
3.8 KiB
C
152 строки
3.8 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* designed/implemented by Gagan Saksena */
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#include "mkutils.h"
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#include "xp.h"
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#include "prefetch.h"
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#include "net.h"
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#include "xp_list.h"
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#include "prefapi.h"
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PRIVATE XP_List* prefetch_list = 0;
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MODULE_PRIVATE Bool pre_OKToPrefetch(char* url);
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MODULE_PRIVATE void pre_Finished(URL_Struct* url_struct, int status, MWContext* context);
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PRIVATE XP_Bool pre_enabled = TRUE;
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PRIVATE void pre_ProcessList(MWContext* context);
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/* Constructs a URL_Struct from the the specified URL to the prefetch_list based
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on the value of the pre subtag.
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*/
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PUBLIC void
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PRE_AddToList(MWContext* context, char* url)
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{
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/* Construct a new URL_Struct with this url, and Prefetch priority */
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URL_Struct* urls;
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if (!pre_enabled || !pre_OKToPrefetch(url))
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return;
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urls = NET_CreateURLStruct(url, NET_DONT_RELOAD);
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if (!urls)
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return;
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urls->priority = Prefetch_priority;
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urls->load_background = TRUE;
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if (prefetch_list == NULL)
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{
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prefetch_list = XP_ListNew();
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}
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XP_ListAddObjectToEnd(prefetch_list, urls);
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}
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/* The main process for each MWContext, should be called after
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a page is finished loading. This basically extracts all the
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links on the current page and eliminates the non relevant ones
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and adds the elements to the prefetch_list. If something
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has been added, then it is passed on to NET_GetURL function
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for prefetching and storing in cache.
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*/
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PUBLIC void
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PRE_Fetch(MWContext* context)
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{
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pre_ProcessList(context);
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}
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/* Returns bool to indicate if its OK to prefetch the specified URL.
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we don't prefetch mailto:, file:, etc.
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*/
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PRIVATE Bool
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pre_OKToPrefetch(char* url)
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{
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int type;
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if (url == NULL)
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return FALSE;
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/* Skip interpreted cgi-bin's for now... */
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if (PL_strchr(url, '?') ||
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PL_strstr(url, "cgi-bin") ||
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PL_strstr(url, ".cgi") ||
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PL_strstr(url, ".shtml"))
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return FALSE;
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/* approve only HTTP and Gopher for now (skip about:/mailto:/telnet:/gopher:/ etc.) */
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/* TODO add FTP directories only! */
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type = NET_URL_Type(url);
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if (type && (
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(type == HTTP_TYPE_URL) ||
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(type == GOPHER_TYPE_URL)))
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return TRUE;
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return FALSE;
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}
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PRIVATE void
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pre_Finished(URL_Struct* url_struct, int status, MWContext* context)
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{
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/* this should change to update the colors of
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the prefetched links */
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if (prefetch_list)
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{
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XP_ListRemoveObject(prefetch_list, url_struct);
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if (XP_ListCount(prefetch_list) == 0)
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{
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XP_ListDestroy(prefetch_list);
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prefetch_list = 0;
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}
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}
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XP_FREEIF(url_struct);
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}
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PRIVATE void
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pre_ProcessList(MWContext* context)
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{
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if (XP_ListCount(prefetch_list)>0)
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{
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URL_Struct* urls;
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XP_List* pList = prefetch_list;
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while ((urls = (URL_Struct*)XP_ListNextObject(pList)))
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{
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NET_GetURL(urls,
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FO_CACHE_ONLY,
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context,
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pre_Finished);
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}
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}
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}
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/* Enable or disable the prefetching, called from NET_SetupPrefs in mkgeturl.c */
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PUBLIC void
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PRE_Enable(PRUint8 nNumber)
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{
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if (nNumber > 0)
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{
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pre_enabled = TRUE;
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/* TODO - set max number here */
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}
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else
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pre_enabled = FALSE;
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}
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