144 lines
4.7 KiB
C++
144 lines
4.7 KiB
C++
// Copyright (c) 2011 Marshall A. Greenblatt. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the name Chromium Embedded
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// Framework nor the names of its contributors may be used to endorse
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// or promote products derived from this software without specific prior
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// written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// ---------------------------------------------------------------------------
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//
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// The contents of this file are only available to applications that link
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// against the libcef_dll_wrapper target.
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//
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#ifndef CEF_INCLUDE_WRAPPER_CEF_ZIP_ARCHIVE_H_
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#define CEF_INCLUDE_WRAPPER_CEF_ZIP_ARCHIVE_H_
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#pragma once
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#include <map>
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#include "include/base/cef_lock.h"
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#include "include/base/cef_ref_counted.h"
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#include "include/cef_base.h"
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class CefStreamReader;
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///
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// Thread-safe class for accessing zip archive file contents. This class should
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// not be used with large archive files because all data will be resident in
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// memory at the same time. This implementation supports a restricted set of zip
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// archive features:
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// (1) All file names are stored and compared in lower case.
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// (2) File ordering from the original zip archive is not maintained. This
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// means that files from the same folder may not be located together in the
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// file content map.
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///
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class CefZipArchive : public base::RefCountedThreadSafe<CefZipArchive> {
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public:
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///
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// Class representing a file in the archive. Accessing the file data from
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// multiple threads is safe provided a reference to the File object is kept.
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///
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class File : public CefBaseRefCounted {
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public:
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///
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// Returns the read-only data contained in the file.
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///
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virtual const unsigned char* GetData() const = 0;
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///
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// Returns the size of the data in the file.
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///
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virtual size_t GetDataSize() const = 0;
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///
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// Returns a CefStreamReader object for streaming the contents of the file.
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///
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virtual CefRefPtr<CefStreamReader> GetStreamReader() const = 0;
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};
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using FileMap = std::map<CefString, CefRefPtr<File>>;
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///
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// Create a new object.
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///
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CefZipArchive();
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CefZipArchive(const CefZipArchive&) = delete;
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CefZipArchive& operator=(const CefZipArchive&) = delete;
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///
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// Load the contents of the specified zip archive stream into this object.
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// If the zip archive requires a password then provide it via |password|.
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// If |overwriteExisting| is true then any files in this object that also
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// exist in the specified archive will be replaced with the new files.
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// Returns the number of files successfully loaded.
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///
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size_t Load(CefRefPtr<CefStreamReader> stream,
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const CefString& password,
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bool overwriteExisting);
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///
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// Clears the contents of this object.
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///
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void Clear();
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///
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// Returns the number of files in the archive.
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///
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size_t GetFileCount() const;
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///
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// Returns true if the specified file exists and has contents.
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///
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bool HasFile(const CefString& fileName) const;
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///
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// Returns the specified file.
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///
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CefRefPtr<File> GetFile(const CefString& fileName) const;
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///
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// Removes the specified file.
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///
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bool RemoveFile(const CefString& fileName);
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///
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// Returns the map of all files.
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///
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size_t GetFiles(FileMap& map) const;
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private:
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// Protect against accidental deletion of this object.
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friend class base::RefCountedThreadSafe<CefZipArchive>;
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~CefZipArchive();
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FileMap contents_;
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mutable base::Lock lock_;
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};
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#endif // CEF_INCLUDE_WRAPPER_CEF_ZIP_ARCHIVE_H_
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