Implement File constructor.

Source/bindings/v8/custom/V8BlobCustomHelpers.cpp

 /*
- * Copyright (C) 2012 Google Inc. All rights reserved.
+ * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
+#include "V8BlobCustomHelpers.h"
+
 #include "V8Blob.h"
-
 #include "bindings/v8/Dictionary.h"
-#include "bindings/v8/ExceptionMessages.h"
 #include "bindings/v8/V8Binding.h"
 #include "bindings/v8/V8Utilities.h"
 #include "bindings/v8/custom/V8ArrayBufferCustom.h"
 #include "bindings/v8/custom/V8ArrayBufferViewCustom.h"
 #include "core/fileapi/BlobBuilder.h"
-#include "wtf/RefPtr.h"
 
 namespace WebCore {
 
-void V8Blob::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
+namespace V8BlobCustomHelpers {
+
+bool processBlobPropertyBag(v8::Local<v8::Value> propertyBag, v8::Isolate* isolate, const char* blobClassName, String& contentType, String& endings)
 {
-    if (!info.Length()) {
-        RefPtr<Blob> blob = Blob::create();
-        info.GetReturnValue().Set(toV8(blob.get(), info.Holder(), info.GetIsolate()));
-        return;
-    }
+    V8TRYCATCH_RETURN(Dictionary, dictionary, Dictionary(propertyBag, isolate), false);
 
-    uint32_t length = 0;
-    if (info[0]->IsArray()) {
-        length = v8::Local<v8::Array>::Cast(info[0])->Length();
-    } else {
-        const int sequenceArgumentIndex = 0;
-        if (toV8Sequence(info[sequenceArgumentIndex], length, info.GetIsolate()).IsEmpty()) {
-            throwTypeError(ExceptionMessages::failedToConstruct("Blob", ExceptionMessages::notAnArrayTypeArgumentOrValue(sequenceArgumentIndex + 1)), info.GetIsolate());
-            return;
+    V8TRYCATCH_RETURN(bool, containsEndings, dictionary.get("endings", endings), false);
+    if (containsEndings) {
+        if (endings != "transparent" && endings != "native") {
+            throwTypeError(ExceptionMessages::failedToConstruct(blobClassName, "The \"endings\" property must be either \"transparent\" or \"native\"."), isolate);

[haraken, 2013/11/15 08:40:05]

Nit: You could use '...' and avoid \".

[pwnall-personal, 2013/11/15 10:28:53]

Hm... AFAIK, single quotes mean char in C++. I tried out the following on MacOS
10.9 and it doesn't compile.

'The "endings" property must be either "transparent" or "native".'

I think I'm misunderstanding you... please advise?

[haraken, 2013/11/15 10:39:12]

Sorry, you're right. Ignore my comment :)

+            return false;
         }
     }
 
-    String type;
-    String endings = "transparent";
+    V8TRYCATCH_RETURN(bool, containsType, dictionary.get("type", contentType), false);
+    if (containsType) {
+        if (!contentType.containsOnlyASCII()) {
+            throwError(v8SyntaxError, ExceptionMessages::failedToConstruct(blobClassName, "The \"type\" property must consist of ASCII characters."), isolate);

[haraken, 2013/11/15 08:40:05]

Ditto.

[pwnall-personal, 2013/11/15 10:28:53]

Same issue as above. Sorry for being dense :(

+            return false;
+        }
+        contentType = contentType.lower();
+    }
+    return true;
+}
 
-    if (info.Length() > 1) {
-        if (!info[1]->IsObject()) {
-            throwTypeError(ExceptionMessages::failedToConstruct("Blob", "The 2nd argument is not of type Object."), info.GetIsolate());
-            return;
-        }
+bool processBlobParts(v8::Local<v8::Object> blobParts, uint32_t blobPartsLength, v8::Isolate* isolate, const String& endings, BlobBuilder& blobBuilder)
+{
+    for (uint32_t i = 0; i < blobPartsLength; ++i) {
+        v8::Local<v8::Value> item = blobParts->Get(v8::Uint32::New(i, isolate));
+        if (item.IsEmpty())
+            return false;
 
-        V8TRYCATCH_VOID(Dictionary, dictionary, Dictionary(info[1], info.GetIsolate()));
-
-        V8TRYCATCH_VOID(bool, containsEndings, dictionary.get("endings", endings));
-        if (containsEndings) {
-            if (endings != "transparent" && endings != "native") {
-                throwTypeError(ExceptionMessages::failedToConstruct("Blob", "The 2nd argument's \"endings\" property must be either \"transparent\" or \"native\"."), info.GetIsolate());
-                return;
-            }
-        }
-
-        V8TRYCATCH_VOID(bool, containsType, dictionary.get("type", type));
-        UNUSED_PARAM(containsType);
-        if (!type.containsOnlyASCII()) {
-            throwError(v8SyntaxError, ExceptionMessages::failedToConstruct("Blob", "The 2nd argument's \"type\" property must consist of ASCII characters."), info.GetIsolate());
-            return;
-        }
-        type = type.lower();
-    }
-
-    ASSERT(endings == "transparent" || endings == "native");
-
-    BlobBuilder blobBuilder;
-    v8::Local<v8::Object> blobParts = v8::Local<v8::Object>::Cast(info[0]);
-    for (uint32_t i = 0; i < length; ++i) {
-        v8::Local<v8::Value> item = blobParts->Get(v8::Uint32::New(i, info.GetIsolate()));
-        if (item.IsEmpty())
-            return;
-
-        if (V8ArrayBuffer::hasInstance(item, info.GetIsolate(), worldType(info.GetIsolate()))) {
+        if (V8ArrayBuffer::hasInstance(item, isolate, worldType(isolate))) {
             ArrayBuffer* arrayBuffer = V8ArrayBuffer::toNative(v8::Handle<v8::Object>::Cast(item));
             ASSERT(arrayBuffer);
             blobBuilder.append(arrayBuffer);
-        } else if (V8ArrayBufferView::hasInstance(item, info.GetIsolate(), worldType(info.GetIsolate()))) {
+        } else if (V8ArrayBufferView::hasInstance(item, isolate, worldType(isolate))) {
             ArrayBufferView* arrayBufferView = V8ArrayBufferView::toNative(v8::Handle<v8::Object>::Cast(item));
             ASSERT(arrayBufferView);
             blobBuilder.append(arrayBufferView);
-        } else if (V8Blob::hasInstance(item, info.GetIsolate(), worldType(info.GetIsolate()))) {
+        } else if (V8Blob::hasInstance(item, isolate, worldType(isolate))) {
             Blob* blob = V8Blob::toNative(v8::Handle<v8::Object>::Cast(item));
             ASSERT(blob);
             blobBuilder.append(blob);
         } else {
-            V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, stringValue, item);
+            V8TRYCATCH_FOR_V8STRINGRESOURCE_RETURN(V8StringResource<>, stringValue, item, false);
             blobBuilder.append(stringValue, endings);
         }
     }
-
-    RefPtr<Blob> blob = blobBuilder.getBlob(type);
-    info.GetReturnValue().Set(toV8(blob.get(), info.Holder(), info.GetIsolate()));
+    return true;
 }
 
+} // namespace V8BlobCustomHelpers
+
 } // namespace WebCore