2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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30 #include <wtf/PassRefPtr.h>
31 #include <wtf/RefCounted.h>
32 #include <wtf/text/WTFString.h>
39 class File : public Blob {
41 // AllContentTypes should only be used when the full path/name are trusted; otherwise, it could
42 // allow arbitrary pages to determine what applications an user has installed.
43 enum ContentTypeLookupPolicy {
44 WellKnownContentTypes,
48 static PassRefPtr<File> create(const String& path, ContentTypeLookupPolicy policy = WellKnownContentTypes)
50 return adoptRef(new File(path, policy));
53 // For deserialization.
54 static PassRefPtr<File> create(const String& path, const KURL& srcURL, const String& type)
56 return adoptRef(new File(path, srcURL, type));
59 #if ENABLE(DIRECTORY_UPLOAD)
60 static PassRefPtr<File> createWithRelativePath(const String& path, const String& relativePath);
63 #if ENABLE(FILE_SYSTEM)
64 // If filesystem files live in the remote filesystem, the port might pass the valid metadata (whose length field is non-negative) and cache in the File object.
66 // Otherwise calling size(), lastModifiedTime() and slice() will synchronously query the file metadata.
67 static PassRefPtr<File> createForFileSystemFile(const String& name, const FileMetadata& metadata)
69 return adoptRef(new File(name, metadata));
72 static PassRefPtr<File> createForFileSystemFile(const KURL& url, const FileMetadata& metadata)
74 return adoptRef(new File(url, metadata));
77 KURL fileSystemURL() const { return m_fileSystemURL; }
80 // Create a file with a name exposed to the author (via File.name and associated DOM properties) that differs from the one provided in the path.
81 static PassRefPtr<File> createWithName(const String& path, const String& name, ContentTypeLookupPolicy policy = WellKnownContentTypes)
84 return adoptRef(new File(path, policy));
85 return adoptRef(new File(path, name, policy));
88 virtual unsigned long long size() const;
89 virtual bool isFile() const { return true; }
91 const String& path() const { return m_path; }
92 const String& name() const { return m_name; }
94 // This returns the current date and time if the file's last modifiecation date is not known (per spec: http://www.w3.org/TR/FileAPI/#dfn-lastModifiedDate).
95 double lastModifiedDate() const;
97 #if ENABLE(DIRECTORY_UPLOAD)
98 // Returns the relative path of this file in the context of a directory selection.
99 const String& webkitRelativePath() const { return m_relativePath; }
102 // Note that this involves synchronous file operation. Think twice before calling this function.
103 void captureSnapshot(long long& snapshotSize, double& snapshotModificationTime) const;
106 File(const String& path, ContentTypeLookupPolicy);
108 // For deserialization.
109 File(const String& path, const KURL& srcURL, const String& type);
110 File(const String& path, const String& name, ContentTypeLookupPolicy);
112 # if ENABLE(FILE_SYSTEM)
113 File(const String& name, const FileMetadata&);
114 File(const KURL& fileSystemURL, const FileMetadata&);
116 // Returns true if this has a valid snapshot metadata (i.e. m_snapshotSize >= 0).
117 bool hasValidSnapshotMetadata() const { return m_snapshotSize >= 0; }
123 #if ENABLE(FILE_SYSTEM)
124 KURL m_fileSystemURL;
126 // If m_snapshotSize is negative (initialized to -1 by default), the snapshot metadata is invalid and we retrieve the latest metadata synchronously in size(), lastModifiedTime() and slice().
127 // Otherwise, the snapshot metadata are used directly in those methods.
128 const long long m_snapshotSize;
129 const double m_snapshotModificationTime;
132 #if ENABLE(DIRECTORY_UPLOAD)
133 String m_relativePath;
137 inline File* toFile(Blob* blob)
139 ASSERT(!blob || blob->isFile());
140 return static_cast<File*>(blob);
143 inline const File* toFile(const Blob* blob)
145 ASSERT(!blob || blob->isFile());
146 return static_cast<const File*>(blob);
149 } // namespace WebCore