295 lines
6.9 KiB
C++
295 lines
6.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "libimg.h"
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#include "nsImageNet.h"
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#include "ilINetContext.h"
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#include "ilIURL.h"
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#include "ilINetReader.h"
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#include "nsIInputStream.h"
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#include "nsIURL.h"
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#include "prmem.h"
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#include "plstr.h"
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//#include "il_strm.h"
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#include "nsIIOService.h"
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#include "nsIURL.h"
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#include "nsIChannel.h"
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#include "nsIServiceManager.h"
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static NS_DEFINE_IID(kIImageNetContextIID, IL_INETCONTEXT_IID);
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static NS_DEFINE_IID(kIURLIID, NS_IURL_IID);
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static NS_DEFINE_IID(kIIOServiceIID, NS_IIOSERVICE_IID);
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static NS_DEFINE_CID(kIOServiceCID, NS_IOSERVICE_CID);
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class ImageNetContextSyncImpl : public ilINetContext {
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public:
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ImageNetContextSyncImpl(NET_ReloadMethod aReloadPolicy);
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virtual ~ImageNetContextSyncImpl();
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NS_DECL_ISUPPORTS
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virtual ilINetContext* Clone();
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virtual NET_ReloadMethod GetReloadPolicy();
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virtual void AddReferer(ilIURL* aUrl);
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virtual void Interrupt();
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virtual ilIURL* CreateURL(const char* aUrl,
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NET_ReloadMethod aReloadMethod);
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virtual PRBool IsLocalFileURL(char* aAddress);
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#ifdef NU_CACHE
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virtual PRBool IsURLInCache(ilIURL* aUrl);
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#else /* NU_CACHE */
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virtual PRBool IsURLInMemCache(ilIURL* aUrl);
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virtual PRBool IsURLInDiskCache(ilIURL* aUrl);
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#endif /* NU_CACHE */
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virtual int GetURL(ilIURL* aUrl,
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NET_ReloadMethod aLoadMethod,
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ilINetReader* aReader);
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NET_ReloadMethod mReloadPolicy;
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};
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ImageNetContextSyncImpl::ImageNetContextSyncImpl(NET_ReloadMethod aReloadPolicy)
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{
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NS_INIT_REFCNT();
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mReloadPolicy = aReloadPolicy;
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}
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ImageNetContextSyncImpl::~ImageNetContextSyncImpl()
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{
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}
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NS_IMPL_ISUPPORTS(ImageNetContextSyncImpl, kIImageNetContextIID)
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ilINetContext*
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ImageNetContextSyncImpl::Clone()
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{
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ilINetContext *cx;
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if (NS_NewImageNetContextSync(&cx) == NS_OK) {
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return cx;
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}
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return nsnull;
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}
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NET_ReloadMethod
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ImageNetContextSyncImpl::GetReloadPolicy()
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{
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return mReloadPolicy;
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}
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void
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ImageNetContextSyncImpl::AddReferer(ilIURL *aUrl)
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{
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}
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void
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ImageNetContextSyncImpl::Interrupt()
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{
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}
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ilIURL*
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ImageNetContextSyncImpl::CreateURL(const char* aURL,
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NET_ReloadMethod aReloadMethod)
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{
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ilIURL *url;
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if (NS_NewImageURL(&url, aURL, nsnull) == NS_OK)
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{
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return url;
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}
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return nsnull;
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}
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PRBool
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ImageNetContextSyncImpl::IsLocalFileURL(char *aAddress)
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{
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if (PL_strncasecmp(aAddress, "file:", 5) == 0) {
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return PR_TRUE;
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} else {
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return PR_FALSE;
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}
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}
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#ifdef NU_CACHE
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PRBool
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ImageNetContextSyncImpl::IsURLInCache(ilIURL *aUrl)
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{
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return PR_TRUE;
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}
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#else /* NU_CACHE */
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PRBool
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ImageNetContextSyncImpl::IsURLInMemCache(ilIURL *aUrl)
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{
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return PR_FALSE;
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}
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PRBool
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ImageNetContextSyncImpl::IsURLInDiskCache(ilIURL *aUrl)
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{
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return PR_FALSE;
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}
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#endif /* NU_CACHE */
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int
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ImageNetContextSyncImpl::GetURL(ilIURL* aURL,
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NET_ReloadMethod aLoadMethod,
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ilINetReader* aReader)
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{
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NS_PRECONDITION(nsnull != aURL, "null URL");
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NS_PRECONDITION(nsnull != aReader, "null reader");
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if (aURL == nsnull || aReader == nsnull) {
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return -1;
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}
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aURL->SetReader(aReader);
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PRInt32 status = 0;
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// Get a nsIURI interface
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nsIURI* url = nsnull;
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aURL->QueryInterface(kIURLIID, (void **)&url);
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nsresult res;
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// Get a network service interface which we'll use to create a stream
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NS_WITH_SERVICE(nsIIOService, service, kIOServiceCID, &res);
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if (NS_SUCCEEDED(res)) {
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nsIInputStream* stream = nsnull;
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nsIURI *uri = nsnull;
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nsresult rv;
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rv = url->QueryInterface(nsIURI::GetIID(), (void**)&uri);
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if (NS_FAILED(rv)) return -1;
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// XXX NECKO what verb? what event sink getter
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nsIChannel *channel = nsnull;
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rv = service->NewChannelFromURI("load", uri, nsnull, nsnull, nsnull, &channel);
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NS_RELEASE(uri);
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if (NS_FAILED(rv))
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return -1;
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char* aContentType = NULL;
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rv = channel->GetContentType(&aContentType); //nsCRT alloc's str
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if (NS_FAILED(rv)) {
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if(aContentType){
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nsCRT::free(aContentType);
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}
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aContentType = nsCRT::strdup("unknown");
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}
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if(nsCRT::strlen(aContentType) > 50){
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//somethings wrong. mimetype string shouldn't be this big.
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//protect us from the user.
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nsCRT::free(aContentType);
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aContentType = nsCRT::strdup("unknown");
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}
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rv = channel->OpenInputStream(0, -1, &stream);
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NS_RELEASE(channel);
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if (NS_FAILED(rv))
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return -1;
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if (aReader->StreamCreated(aURL, aContentType) == PR_TRUE) {
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// Read the URL data
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char buf[2048];
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PRUint32 count;
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nsresult result;
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PRBool first = PR_TRUE;
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result = stream->Read(buf, sizeof(buf), &count);
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while (NS_SUCCEEDED(result) && (count > 0)) {
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if (first == PR_TRUE) {
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PRInt32 ilErr;
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ilErr = aReader->FirstWrite((const unsigned char *)buf, (int32)count);
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first = PR_FALSE;
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// If FirstWrite fails then the image type cannot be determined
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if (ilErr != 0) {
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result = NS_ERROR_ABORT;
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break;
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}
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}
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aReader->Write((const unsigned char *)buf, (int32)count);
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// Get the next block
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result = stream->Read(buf, sizeof(buf), &count);
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}
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if (NS_FAILED(result)) {
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aReader->StreamAbort(-1);
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status = -1;
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} else {
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NS_ASSERTION(0 == count, "expected EOF");
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aReader->StreamComplete(PR_FALSE);
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}
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} else {
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aReader->StreamAbort(-1);
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status = -1;
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}
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NS_IF_RELEASE(stream);
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nsCRT::free(aContentType);
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} else {
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aReader->StreamAbort(-1);
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status = -1;
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}
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aReader->NetRequestDone(aURL, status);
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NS_IF_RELEASE(url);
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return 0;
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}
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nsresult NS_NewImageNetContextSync(ilINetContext **aInstancePtrResult)
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{
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NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
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if (nsnull == aInstancePtrResult) {
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return NS_ERROR_NULL_POINTER;
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}
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ilINetContext *cx = new ImageNetContextSyncImpl(NET_NORMAL_RELOAD);
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if (cx == nsnull) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return cx->QueryInterface(kIImageNetContextIID, (void **) aInstancePtrResult);
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}
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