DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (b6d82b1a6b02)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170
/* -*- 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 "File.h"
#include "FileBlobImpl.h"
#include "MemoryBlobImpl.h"
#include "MultipartBlobImpl.h"
#include "mozilla/dom/BlobBinding.h"
#include "mozilla/dom/FileBinding.h"
#include "mozilla/dom/FileCreatorHelper.h"
#include "mozilla/dom/FileSystemUtils.h"
#include "mozilla/dom/Promise.h"
#include "nsXULAppAPI.h"

namespace mozilla {
namespace dom {

File::File(nsISupports* aParent, BlobImpl* aImpl) : Blob(aParent, aImpl) {
  MOZ_ASSERT(aImpl->IsFile());
}

File::~File() {}

/* static */
File* File::Create(nsISupports* aParent, BlobImpl* aImpl) {
  MOZ_ASSERT(aImpl);
  MOZ_ASSERT(aImpl->IsFile());

  return new File(aParent, aImpl);
}

/* static */
already_AddRefed<File> File::Create(nsISupports* aParent,
                                    const nsAString& aName,
                                    const nsAString& aContentType,
                                    uint64_t aLength,
                                    int64_t aLastModifiedDate) {
  RefPtr<File> file = new File(
      aParent, new BaseBlobImpl(NS_LITERAL_STRING("BaseBlobImpl"), aName,
                                aContentType, aLength, aLastModifiedDate));
  return file.forget();
}

/* static */
already_AddRefed<File> File::CreateMemoryFile(nsISupports* aParent,
                                              void* aMemoryBuffer,
                                              uint64_t aLength,
                                              const nsAString& aName,
                                              const nsAString& aContentType,
                                              int64_t aLastModifiedDate) {
  RefPtr<File> file =
      new File(aParent, new MemoryBlobImpl(aMemoryBuffer, aLength, aName,
                                           aContentType, aLastModifiedDate));
  return file.forget();
}

/* static */
already_AddRefed<File> File::CreateFromFile(nsISupports* aParent,
                                            nsIFile* aFile) {
  MOZ_DIAGNOSTIC_ASSERT(XRE_IsParentProcess());
  RefPtr<File> file = new File(aParent, new FileBlobImpl(aFile));
  return file.forget();
}

/* static */
already_AddRefed<File> File::CreateFromFile(nsISupports* aParent,
                                            nsIFile* aFile,
                                            const nsAString& aName,
                                            const nsAString& aContentType) {
  MOZ_DIAGNOSTIC_ASSERT(XRE_IsParentProcess());
  RefPtr<File> file =
      new File(aParent, new FileBlobImpl(aFile, aName, aContentType));
  return file.forget();
}

JSObject* File::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
  return File_Binding::Wrap(aCx, this, aGivenProto);
}

void File::GetName(nsAString& aFileName) const { mImpl->GetName(aFileName); }

void File::GetRelativePath(nsAString& aPath) const {
  aPath.Truncate();

  nsAutoString path;
  mImpl->GetDOMPath(path);

  // WebkitRelativePath doesn't start with '/'
  if (!path.IsEmpty()) {
    MOZ_ASSERT(path[0] == FILESYSTEM_DOM_PATH_SEPARATOR_CHAR);
    aPath.Assign(Substring(path, 1));
  }
}

int64_t File::GetLastModified(ErrorResult& aRv) {
  return mImpl->GetLastModified(aRv);
}

void File::GetMozFullPath(nsAString& aFilename,
                          SystemCallerGuarantee aGuarantee, ErrorResult& aRv) {
  mImpl->GetMozFullPath(aFilename, aGuarantee, aRv);
}

void File::GetMozFullPathInternal(nsAString& aFileName, ErrorResult& aRv) {
  mImpl->GetMozFullPathInternal(aFileName, aRv);
}

/* static */
already_AddRefed<File> File::Constructor(const GlobalObject& aGlobal,
                                         const Sequence<BlobPart>& aData,
                                         const nsAString& aName,
                                         const FilePropertyBag& aBag,
                                         ErrorResult& aRv) {
  // Normalizing the filename
  nsString name(aName);
  name.ReplaceChar('/', ':');

  RefPtr<MultipartBlobImpl> impl = new MultipartBlobImpl(name);

  nsAutoString type(aBag.mType);
  MakeValidBlobType(type);
  impl->InitializeBlob(aData, type, aBag.mEndings == EndingTypes::Native, aRv);
  if (aRv.Failed()) {
    return nullptr;
  }
  MOZ_ASSERT(impl->IsFile());

  if (aBag.mLastModified.WasPassed()) {
    impl->SetLastModified(aBag.mLastModified.Value());
  }

  RefPtr<File> file = new File(aGlobal.GetAsSupports(), impl);
  return file.forget();
}

/* static */
already_AddRefed<Promise> File::CreateFromNsIFile(
    const GlobalObject& aGlobal, nsIFile* aData,
    const ChromeFilePropertyBag& aBag, SystemCallerGuarantee aGuarantee,
    ErrorResult& aRv) {
  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());

  RefPtr<Promise> promise =
      FileCreatorHelper::CreateFile(global, aData, aBag, true, aRv);
  return promise.forget();
}

/* static */
already_AddRefed<Promise> File::CreateFromFileName(
    const GlobalObject& aGlobal, const nsAString& aPath,
    const ChromeFilePropertyBag& aBag, SystemCallerGuarantee aGuarantee,
    ErrorResult& aRv) {
  nsCOMPtr<nsIFile> file;
  aRv = NS_NewLocalFile(aPath, false, getter_AddRefs(file));
  if (NS_WARN_IF(aRv.Failed())) {
    return nullptr;
  }

  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());

  RefPtr<Promise> promise =
      FileCreatorHelper::CreateFile(global, file, aBag, false, aRv);
  return promise.forget();
}

}  // namespace dom
}  // namespace mozilla