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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /embedding/browser/nsEmbedStream.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'embedding/browser/nsEmbedStream.cpp')
-rw-r--r--embedding/browser/nsEmbedStream.cpp101
1 files changed, 101 insertions, 0 deletions
diff --git a/embedding/browser/nsEmbedStream.cpp b/embedding/browser/nsEmbedStream.cpp
new file mode 100644
index 000000000..35347060c
--- /dev/null
+++ b/embedding/browser/nsEmbedStream.cpp
@@ -0,0 +1,101 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsIAsyncInputStream.h"
+#include "nsIAsyncOutputStream.h"
+#include "nsIDocShell.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsIPipe.h"
+
+#include "nsEmbedStream.h"
+#include "nsError.h"
+#include "nsString.h"
+
+NS_IMPL_ISUPPORTS0(nsEmbedStream)
+
+nsEmbedStream::nsEmbedStream()
+{
+ mOwner = nullptr;
+}
+
+nsEmbedStream::~nsEmbedStream()
+{
+}
+
+void
+nsEmbedStream::InitOwner(nsIWebBrowser* aOwner)
+{
+ mOwner = aOwner;
+}
+
+nsresult
+nsEmbedStream::Init(void)
+{
+ return NS_OK;
+}
+
+nsresult
+nsEmbedStream::OpenStream(nsIURI* aBaseURI, const nsACString& aContentType)
+{
+ nsresult rv;
+ NS_ENSURE_ARG_POINTER(aBaseURI);
+ NS_ENSURE_TRUE(IsASCII(aContentType), NS_ERROR_INVALID_ARG);
+
+ // if we're already doing a stream, return an error
+ if (mOutputStream) {
+ return NS_ERROR_IN_PROGRESS;
+ }
+
+ nsCOMPtr<nsIAsyncInputStream> inputStream;
+ nsCOMPtr<nsIAsyncOutputStream> outputStream;
+ rv = NS_NewPipe2(getter_AddRefs(inputStream), getter_AddRefs(outputStream),
+ true, false, 0, UINT32_MAX);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ nsCOMPtr<nsIDocShell> docShell = do_GetInterface(mOwner);
+ rv = docShell->LoadStream(inputStream, aBaseURI, aContentType,
+ EmptyCString(), nullptr);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ mOutputStream = outputStream;
+ return rv;
+}
+
+nsresult
+nsEmbedStream::AppendToStream(const uint8_t* aData, uint32_t aLen)
+{
+ nsresult rv;
+ NS_ENSURE_STATE(mOutputStream);
+
+ uint32_t bytesWritten = 0;
+ rv = mOutputStream->Write(reinterpret_cast<const char*>(aData),
+ aLen, &bytesWritten);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ NS_ASSERTION(bytesWritten == aLen,
+ "underlying buffer couldn't handle the write");
+ return rv;
+}
+
+nsresult
+nsEmbedStream::CloseStream(void)
+{
+ nsresult rv = NS_OK;
+
+ // NS_ENSURE_STATE returns NS_ERROR_UNEXPECTED if the condition isn't
+ // satisfied; this is exactly what we want to return.
+ NS_ENSURE_STATE(mOutputStream);
+ mOutputStream->Close();
+ mOutputStream = nullptr;
+
+ return rv;
+}