src/third_party/WebKit/Source/bindings/v8/custom/V8FileCustom.cpp

   1 /*
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   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
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  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32 #include "V8File.h"
  33
  34 #include "RuntimeEnabledFeatures.h"
  35 #include "bindings/v8/ExceptionState.h"
  36 #include "bindings/v8/custom/V8BlobCustomHelpers.h"
  37
  38 namespace WebCore {
  39
  40 void V8File::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
  41 {
  42     ExceptionState exceptionState(ExceptionState::ConstructionContext, "File", info.Holder(), info.GetIsolate());
  43
  44     if (!RuntimeEnabledFeatures::fileConstructorEnabled()) {
  45         exceptionState.throwTypeError("Illegal constructor");
  46         exceptionState.throwIfNeeded();
  47         return;
  48     }
  49
  50     if (info.Length() < 2) {
  51         exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(2, info.Length()));
  52         exceptionState.throwIfNeeded();
  53         return;
  54     }
  55
  56     uint32_t length = 0;
  57     if (info[0]->IsArray()) {
  58         length = v8::Local<v8::Array>::Cast(info[0])->Length();
  59     } else {
  60         const int sequenceArgumentIndex = 0;
  61         if (toV8Sequence(info[sequenceArgumentIndex], length, info.GetIsolate()).IsEmpty()) {
  62             exceptionState.throwTypeError(ExceptionMessages::notAnArrayTypeArgumentOrValue(sequenceArgumentIndex + 1));
  63             exceptionState.throwIfNeeded();
  64             return;
  65         }
  66     }
  67
  68     TOSTRING_VOID(V8StringResource<>, fileName, info[1]);
  69
  70     V8BlobCustomHelpers::ParsedProperties properties(true);
  71     if (info.Length() > 2) {
  72         if (!info[2]->IsObject()) {
  73             exceptionState.throwTypeError("The 3rd argument is not of type Object.");
  74             exceptionState.throwIfNeeded();
  75             return;
  76         }
  77
  78         if (!properties.parseBlobPropertyBag(info[2], "File", exceptionState, info.GetIsolate())) {
  79             exceptionState.throwIfNeeded();
  80             return;
  81         }
  82     } else {
  83         properties.setDefaultLastModified();
  84     }
  85
  86     OwnPtr<BlobData> blobData = BlobData::create();
  87     blobData->setContentType(properties.contentType());
  88     v8::Local<v8::Object> blobParts = v8::Local<v8::Object>::Cast(info[0]);
  89     if (!V8BlobCustomHelpers::processBlobParts(blobParts, length, properties.normalizeLineEndingsToNative(), *blobData, info.GetIsolate()))
  90         return;
  91
  92     long long fileSize = blobData->length();
  93     RefPtrWillBeRawPtr<File> file = File::create(fileName, properties.lastModified(), BlobDataHandle::create(blobData.release(), fileSize));
  94     v8SetReturnValue(info, file.release());
  95 }
  96
  97 void V8File::lastModifiedDateAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
  98 {
  99     // The auto-generated getters return null when the method in the underlying
 100     // implementation returns NaN. The File API says we should return the
 101     // current time when the last modification time is unknown.
 102     // Section 7.2 of the File API spec. http://dev.w3.org/2006/webapi/FileAPI/
 103
 104     File* file = V8File::toNative(info.Holder());
 105     double lastModified = file->lastModifiedDate();
 106     if (!isValidFileTime(lastModified))
 107         lastModified = currentTimeMS();
 108
 109     // lastModifiedDate returns a Date instance.
 110     // http://www.w3.org/TR/FileAPI/#file-attrs
 111     v8SetReturnValue(info, v8::Date::New(info.GetIsolate(), lastModified));
 112 }
 113
 114 void V8File::lastModifiedAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
 115 {
 116     File* file = V8File::toNative(info.Holder());
 117     double lastModified = file->lastModifiedDate();
 118     if (!isValidFileTime(lastModified))
 119         lastModified = currentTimeMS();
 120
 121     // lastModified returns a number, not a Date instance.
 122     // http://dev.w3.org/2006/webapi/FileAPI/#file-attrs
 123     v8SetReturnValue(info, floor(lastModified));
 124 }
 125
 126 } // namespace WebCore