webkit/browser/fileapi/dragged_file_util.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "webkit/browser/fileapi/dragged_file_util.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/file_util.h"
  11 #include "webkit/browser/fileapi/file_system_context.h"
  12 #include "webkit/browser/fileapi/file_system_operation_context.h"
  13 #include "webkit/browser/fileapi/file_system_url.h"
  14 #include "webkit/browser/fileapi/isolated_context.h"
  15 #include "webkit/browser/fileapi/native_file_util.h"
  16 #include "webkit/common/blob/shareable_file_reference.h"
  17
  18 namespace fileapi {
  19
  20 typedef IsolatedContext::MountPointInfo FileInfo;
  21
  22 namespace {
  23
  24 // Simply enumerate each path from a given fileinfo set.
  25 // Used to enumerate top-level paths of an isolated filesystem.
  26 class SetFileEnumerator : public FileSystemFileUtil::AbstractFileEnumerator {
  27  public:
  28   explicit SetFileEnumerator(const std::vector<FileInfo>& files)
  29       : files_(files) {
  30     file_iter_ = files_.begin();
  31   }
  32   virtual ~SetFileEnumerator() {}
  33
  34   // AbstractFileEnumerator overrides.
  35   virtual base::FilePath Next() OVERRIDE {
  36     if (file_iter_ == files_.end())
  37       return base::FilePath();
  38     base::FilePath platform_file = (file_iter_++)->path;
  39     NativeFileUtil::GetFileInfo(platform_file, &file_info_);
  40     return platform_file;
  41   }
  42   virtual int64 Size() OVERRIDE { return file_info_.size; }
  43   virtual bool IsDirectory() OVERRIDE { return file_info_.is_directory; }
  44   virtual base::Time LastModifiedTime() OVERRIDE {
  45     return file_info_.last_modified;
  46   }
  47
  48  private:
  49   std::vector<FileInfo> files_;
  50   std::vector<FileInfo>::const_iterator file_iter_;
  51   base::File::Info file_info_;
  52 };
  53
  54 }  // namespace
  55
  56 //-------------------------------------------------------------------------
  57
  58 DraggedFileUtil::DraggedFileUtil() {}
  59
  60 base::File::Error DraggedFileUtil::GetFileInfo(
  61     FileSystemOperationContext* context,
  62     const FileSystemURL& url,
  63     base::File::Info* file_info,
  64     base::FilePath* platform_path) {
  65   DCHECK(file_info);
  66   std::string filesystem_id;
  67   DCHECK(url.is_valid());
  68   if (url.path().empty()) {
  69     // The root directory case.
  70     // For now we leave three time fields (modified/accessed/creation time)
  71     // NULL as it is not really clear what to be set for this virtual directory.
  72     // TODO(kinuko): Maybe we want to set the time when this filesystem is
  73     // created (i.e. when the files/directories are dropped).
  74     file_info->is_directory = true;
  75     file_info->is_symbolic_link = false;
  76     file_info->size = 0;
  77     return base::File::FILE_OK;
  78   }
  79   base::File::Error error =
  80       NativeFileUtil::GetFileInfo(url.path(), file_info);
  81   if (base::IsLink(url.path()) && !base::FilePath().IsParent(url.path())) {
  82     // Don't follow symlinks unless it's the one that are selected by the user.
  83     return base::File::FILE_ERROR_NOT_FOUND;
  84   }
  85   if (error == base::File::FILE_OK)
  86     *platform_path = url.path();
  87   return error;
  88 }
  89
  90 scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator>
  91     DraggedFileUtil::CreateFileEnumerator(
  92         FileSystemOperationContext* context,
  93         const FileSystemURL& root) {
  94   DCHECK(root.is_valid());
  95   if (!root.path().empty())
  96     return LocalFileUtil::CreateFileEnumerator(context, root);
  97
  98   // Root path case.
  99   std::vector<FileInfo> toplevels;
 100   IsolatedContext::GetInstance()->GetDraggedFileInfo(
 101       root.filesystem_id(), &toplevels);
 102   return scoped_ptr<AbstractFileEnumerator>(new SetFileEnumerator(toplevels));
 103 }
 104
 105 }  // namespace fileapi