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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_SHELL_INC_INTERNAL_ZIPFILE_HXX
#define INCLUDED_SHELL_INC_INTERNAL_ZIPFILE_HXX
#include <zlib.h>
#include <string>
#include <vector>
#include <memory>
#include "filepath.hxx"
class StreamInterface;
/** A simple zip content provider based on the zlib
*/
class ZipFile
{
public:
typedef std::vector<std::string> Directory_t;
typedef std::unique_ptr<Directory_t> DirectoryPtr_t;
typedef std::vector<char> ZipContentBuffer_t;
public:
/** Checks whether a file is a zip file or not
@precond The given parameter must be a string with length > 0
The file must exist
The file must be readable for the current user
@returns true if the file is a zip file
false if the file is not a zip file
@throws ParameterException if the given file name is empty
IOException if the specified file doesn't exist
AccessViolationException if read access to the file is denied
*/
static bool IsZipFile(const Filepath_t &FileName);
static bool IsZipFile(void *stream);
/** Returns whether the version of the specified zip file may be uncompressed with the
currently used zlib version or not
@precond The given parameter must be a string with length > 0
The file must exist
The file must be readable for the current user
The file must be a valid zip file
@returns true if the file may be uncompressed with the currently used zlib
false if the file may not be uncompressed with the currently used zlib
@throws ParameterException if the given file name is empty
IOException if the specified file doesn't exist or is no zip file
AccessViolationException if read access to the file is denied
*/
static bool IsValidZipFileVersionNumber(const Filepath_t &FileName);
static bool IsValidZipFileVersionNumber(void *stream);
public:
/** Constructs a zip file from a zip file
@precond The given parameter must be a string with length > 0
The file must exist
The file must be readable for the current user
@throws ParameterException if the given file name is empty
IOException if the specified file doesn't exist or is no valid zip file
AccessViolationException if read access to the file is denied
WrongZipVersionException if the zip file cannot be uncompressed
with the used zlib version
*/
ZipFile(const Filepath_t &FileName);
ZipFile(StreamInterface *stream);
/** Destroys a zip file
*/
~ZipFile();
/** Provides an interface to read the uncompressed data of a content of the zip file
@param ContentName
The name of the content in the zip file
@param ppstm
Pointer to pointer, will receive an interface pointer
to IUnknown on success
@precond The specified content must exist in this file
ppstm must not be NULL
@throws std::bad_alloc if the necessary buffer could not be
allocated
ZipException if an zip error occurs
ZipContentMissException if the specified zip content
does not exist in this zip file
*/
void GetUncompressedContent(const std::string &ContentName, /*inout*/ ZipContentBuffer_t &ContentBuffer);
/** Returns a list with the content names contained within this file
@throws ZipException if an error in the zlib happens
*/
DirectoryPtr_t GetDirectory() const;
/** Convenience query function may even realized with
iterating over a ZipFileDirectory returned by
GetDirectory
*/
bool HasContent(const std::string &ContentName) const;
private:
/** Returns the length of the longest file name
in the current zip file
@throws ZipException if an zip error occurs
*/
long GetFileLongestFileNameLength() const;
private:
StreamInterface *m_pStream;
bool m_bShouldFree;
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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