The Tor Browser / file comparison
comparison: dom/file/MetadataHelper.cpp
dom/file/MetadataHelper.cpp
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:1e063476742a |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set ts=2 et sw=2 tw=80: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 5 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "MetadataHelper.h" | |
| 8 | |
| 9 #include "LockedFile.h" | |
| 10 | |
| 11 USING_FILE_NAMESPACE | |
| 12 | |
| 13 nsresult | |
| 14 MetadataHelper::DoAsyncRun(nsISupports* aStream) | |
| 15 { | |
| 16 bool readWrite = mLockedFile->mMode == FileMode::Readwrite; | |
| 17 | |
| 18 nsRefPtr<AsyncMetadataGetter> getter = | |
| 19 new AsyncMetadataGetter(aStream, mParams, readWrite); | |
| 20 | |
| 21 nsresult rv = getter->AsyncWork(this, nullptr); | |
| 22 NS_ENSURE_SUCCESS(rv, rv); | |
| 23 | |
| 24 return NS_OK; | |
| 25 } | |
| 26 | |
| 27 nsresult | |
| 28 MetadataHelper::GetSuccessResult(JSContext* aCx, | |
| 29 JS::MutableHandle<JS::Value> aVal) | |
| 30 { | |
| 31 JS::Rooted<JSObject*> obj(aCx, JS_NewObject(aCx, nullptr, JS::NullPtr(), | |
| 32 JS::NullPtr())); | |
| 33 NS_ENSURE_TRUE(obj, NS_ERROR_OUT_OF_MEMORY); | |
| 34 | |
| 35 if (mParams->SizeRequested()) { | |
| 36 JS::Rooted<JS::Value> val(aCx, JS_NumberValue(mParams->Size())); | |
| 37 | |
| 38 if (!JS_DefineProperty(aCx, obj, "size", val, JSPROP_ENUMERATE)) { | |
| 39 return NS_ERROR_FAILURE; | |
| 40 } | |
| 41 } | |
| 42 | |
| 43 if (mParams->LastModifiedRequested()) { | |
| 44 double msec = mParams->LastModified(); | |
| 45 JSObject *date = JS_NewDateObjectMsec(aCx, msec); | |
| 46 NS_ENSURE_TRUE(date, NS_ERROR_OUT_OF_MEMORY); | |
| 47 | |
| 48 JS::Rooted<JS::Value> dateRoot(aCx, JS::ObjectValue(*date)); | |
| 49 if (!JS_DefineProperty(aCx, obj, "lastModified", dateRoot, | |
| 50 JSPROP_ENUMERATE)) { | |
| 51 return NS_ERROR_FAILURE; | |
| 52 } | |
| 53 } | |
| 54 | |
| 55 aVal.setObject(*obj); | |
| 56 return NS_OK; | |
| 57 } | |
| 58 | |
| 59 nsresult | |
| 60 MetadataHelper::AsyncMetadataGetter::DoStreamWork(nsISupports* aStream) | |
| 61 { | |
| 62 nsresult rv; | |
| 63 | |
| 64 if (mReadWrite) { | |
| 65 // Force a flush (so all pending writes are flushed to the disk and file | |
| 66 // metadata is updated too). | |
| 67 | |
| 68 nsCOMPtr<nsIOutputStream> ostream = do_QueryInterface(aStream); | |
| 69 NS_ASSERTION(ostream, "This should always succeed!"); | |
| 70 | |
| 71 rv = ostream->Flush(); | |
| 72 NS_ENSURE_SUCCESS(rv, rv); | |
| 73 } | |
| 74 | |
| 75 nsCOMPtr<nsIFileMetadata> metadata = do_QueryInterface(aStream); | |
| 76 | |
| 77 if (mParams->SizeRequested()) { | |
| 78 int64_t size; | |
| 79 rv = metadata->GetSize(&size); | |
| 80 NS_ENSURE_SUCCESS(rv, rv); | |
| 81 | |
| 82 NS_ENSURE_TRUE(size >= 0, NS_ERROR_FAILURE); | |
| 83 | |
| 84 mParams->mSize = uint64_t(size); | |
| 85 } | |
| 86 | |
| 87 if (mParams->LastModifiedRequested()) { | |
| 88 int64_t lastModified; | |
| 89 rv = metadata->GetLastModified(&lastModified); | |
| 90 NS_ENSURE_SUCCESS(rv, rv); | |
| 91 | |
| 92 mParams->mLastModified = lastModified; | |
| 93 } | |
| 94 | |
| 95 return NS_OK; | |
| 96 } |
