Source/bindings/v8/custom/V8BlobCustom.cpp

/*
 * Copyright (C) 2012 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.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * 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
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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#include "config.h"
#include "V8Blob.h"

#include "bindings/v8/ExceptionState.h"
#include "bindings/v8/custom/V8BlobCustomHelpers.h"
#include "core/fileapi/BlobBuilder.h"

namespace WebCore {

void V8Blob::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    ExceptionState exceptionState(ExceptionState::ConstructionContext, "Blob", info.Holder(), info.GetIsolate());
    if (!info.Length()) {
        RefPtr<Blob> blob = Blob::create();
        v8SetReturnValue(info, blob.release());
        return;
    }

    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()) {
            exceptionState.throwTypeError(ExceptionMessages::notAnArrayTypeArgumentOrValue(sequenceArgumentIndex + 1));
            exceptionState.throwIfNeeded();
            return;
        }
    }

    V8BlobCustomHelpers::ParsedProperties properties(false);
    if (info.Length() > 1) {
        if (!info[1]->IsObject()) {
            exceptionState.throwTypeError("The 2nd argument is not of type Object.");
            exceptionState.throwIfNeeded();
            return;
        }

        if (!properties.parseBlobPropertyBag(info[1], "Blob", exceptionState, info.GetIsolate())) {
            exceptionState.throwIfNeeded();
            return;
        }
    }

    BlobBuilder blobBuilder;
    v8::Local<v8::Object> blobParts = v8::Local<v8::Object>::Cast(info[0]);
    if (!V8BlobCustomHelpers::processBlobParts(blobParts, length, properties.endings(), blobBuilder, info.GetIsolate()))
        return;

    RefPtr<Blob> blob = blobBuilder.createBlob(properties.contentType());
    v8SetReturnValue(info, blob.release());
}

} // namespace WebCore