The Tor Browser / file comparison
comparison: embedding/browser/webBrowser/nsEmbedStream.cpp
embedding/browser/webBrowser/nsEmbedStream.cpp
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:c69b010dc8ba |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "nsIAsyncInputStream.h" | |
| 7 #include "nsIAsyncOutputStream.h" | |
| 8 #include "nsIDocShell.h" | |
| 9 #include "nsIInterfaceRequestorUtils.h" | |
| 10 #include "nsIPipe.h" | |
| 11 | |
| 12 #include "nsEmbedStream.h" | |
| 13 #include "nsError.h" | |
| 14 #include "nsString.h" | |
| 15 | |
| 16 NS_IMPL_ISUPPORTS0(nsEmbedStream) | |
| 17 | |
| 18 nsEmbedStream::nsEmbedStream() | |
| 19 { | |
| 20 mOwner = nullptr; | |
| 21 } | |
| 22 | |
| 23 nsEmbedStream::~nsEmbedStream() | |
| 24 { | |
| 25 } | |
| 26 | |
| 27 void | |
| 28 nsEmbedStream::InitOwner(nsIWebBrowser *aOwner) | |
| 29 { | |
| 30 mOwner = aOwner; | |
| 31 } | |
| 32 | |
| 33 NS_METHOD | |
| 34 nsEmbedStream::Init(void) | |
| 35 { | |
| 36 return NS_OK; | |
| 37 } | |
| 38 | |
| 39 NS_METHOD | |
| 40 nsEmbedStream::OpenStream(nsIURI *aBaseURI, const nsACString& aContentType) | |
| 41 { | |
| 42 nsresult rv; | |
| 43 NS_ENSURE_ARG_POINTER(aBaseURI); | |
| 44 NS_ENSURE_TRUE(IsASCII(aContentType), NS_ERROR_INVALID_ARG); | |
| 45 | |
| 46 // if we're already doing a stream, return an error | |
| 47 if (mOutputStream) | |
| 48 return NS_ERROR_IN_PROGRESS; | |
| 49 | |
| 50 nsCOMPtr<nsIAsyncInputStream> inputStream; | |
| 51 nsCOMPtr<nsIAsyncOutputStream> outputStream; | |
| 52 rv = NS_NewPipe2(getter_AddRefs(inputStream), | |
| 53 getter_AddRefs(outputStream), | |
| 54 true, false, 0, UINT32_MAX); | |
| 55 if (NS_FAILED(rv)) | |
| 56 return rv; | |
| 57 | |
| 58 nsCOMPtr<nsIDocShell> docShell = do_GetInterface(mOwner); | |
| 59 rv = docShell->LoadStream(inputStream, aBaseURI, aContentType, | |
| 60 EmptyCString(), nullptr); | |
| 61 if (NS_FAILED(rv)) | |
| 62 return rv; | |
| 63 | |
| 64 mOutputStream = outputStream; | |
| 65 return rv; | |
| 66 } | |
| 67 | |
| 68 NS_METHOD | |
| 69 nsEmbedStream::AppendToStream(const uint8_t *aData, uint32_t aLen) | |
| 70 { | |
| 71 nsresult rv; | |
| 72 NS_ENSURE_STATE(mOutputStream); | |
| 73 | |
| 74 uint32_t bytesWritten = 0; | |
| 75 rv = mOutputStream->Write(reinterpret_cast<const char*>(aData), | |
| 76 aLen, &bytesWritten); | |
| 77 if (NS_FAILED(rv)) | |
| 78 return rv; | |
| 79 | |
| 80 NS_ASSERTION(bytesWritten == aLen, | |
| 81 "underlying buffer couldn't handle the write"); | |
| 82 return rv; | |
| 83 } | |
| 84 | |
| 85 NS_METHOD | |
| 86 nsEmbedStream::CloseStream(void) | |
| 87 { | |
| 88 nsresult rv = NS_OK; | |
| 89 | |
| 90 // NS_ENSURE_STATE returns NS_ERROR_UNEXPECTED if the condition isn't | |
| 91 // satisfied; this is exactly what we want to return. | |
| 92 NS_ENSURE_STATE(mOutputStream); | |
| 93 mOutputStream->Close(); | |
| 94 mOutputStream = 0; | |
| 95 | |
| 96 return rv; | |
| 97 } |
