1 files changed, 83 insertions, 0 deletions
diff --git a/dom/file/BlobSet.cpp b/dom/file/BlobSet.cpp
new file mode 100644
index 0000000000..6ae1774296
--- /dev/null
+++ b/dom/file/BlobSet.cpp
@@ -0,0 +1,83 @@
+/* -*- 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 "mozilla/dom/BlobSet.h"
+#include "mozilla/CheckedInt.h"
+#include "mozilla/dom/File.h"
+#include "MemoryBlobImpl.h"
+#include "MultipartBlobImpl.h"
+#include "StringBlobImpl.h"
+
+namespace mozilla::dom {
+
+nsresult BlobSet::AppendVoidPtr(const void* aData, uint32_t aLength) {
+  NS_ENSURE_ARG_POINTER(aData);
+  if (!aLength) {
+    return NS_OK;
+  }
+
+  void* data = malloc(aLength);
+  if (!data) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  memcpy((char*)data, aData, aLength);
+
+  RefPtr<BlobImpl> blobImpl = new MemoryBlobImpl(data, aLength, u""_ns);
+  return AppendBlobImpl(blobImpl);
+}
+
+nsresult BlobSet::AppendUTF8String(const nsACString& aUTF8String,
+                                   bool nativeEOL) {
+  nsCString utf8Str;
+  if (NS_WARN_IF(!utf8Str.Assign(aUTF8String, mozilla::fallible))) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  if (nativeEOL) {
+    if (utf8Str.Contains('\r')) {
+      if (NS_WARN_IF(
+              !utf8Str.ReplaceSubstring("\r\n", "\n", mozilla::fallible) ||
+              !utf8Str.ReplaceSubstring("\r", "\n", mozilla::fallible))) {
+        return NS_ERROR_OUT_OF_MEMORY;
+      }
+    }
+#ifdef XP_WIN
+    if (NS_WARN_IF(
+            !utf8Str.ReplaceSubstring("\n", "\r\n", mozilla::fallible))) {
+      return NS_ERROR_OUT_OF_MEMORY;
+    }
+#endif
+  }
+
+  RefPtr<StringBlobImpl> blobImpl = StringBlobImpl::Create(utf8Str, u""_ns);
+  return AppendBlobImpl(blobImpl);
+}
+
+nsresult BlobSet::AppendBlobImpl(BlobImpl* aBlobImpl) {
+  NS_ENSURE_ARG_POINTER(aBlobImpl);
+
+  // If aBlobImpl is a MultipartBlobImpl, let's append the sub-blobImpls
+  // instead.
+  const nsTArray<RefPtr<BlobImpl>>* subBlobs = aBlobImpl->GetSubBlobImpls();
+  if (subBlobs) {
+    for (BlobImpl* subBlob : *subBlobs) {
+      nsresult rv = AppendBlobImpl(subBlob);
+      if (NS_WARN_IF(NS_FAILED(rv))) {
+        return rv;
+      }
+    }
+
+    return NS_OK;
+  }
+
+  if (NS_WARN_IF(!mBlobImpls.AppendElement(aBlobImpl, fallible))) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  return NS_OK;
+}
+
+}  // namespace mozilla::dom