08b10cd287
* cppcoreguidelines-init-variables * cppcoreguidelines-c-copy-assignment-signature * cppcoreguidelines-macro-usage * cppcoreguidelines-non-private-member-variables-in-classes * cppcoreguidelines-pro-type-member-init * cppcoreguidelines-slicing * cppcoreguidelines-special-member-functions * cppcoreguidelines-virtual-class-destructor
81 lines
3.6 KiB
C++
81 lines
3.6 KiB
C++
/***************************************************************************
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* Copyright (c) 2022 Werner Mayer <wmayer[at]users.sourceforge.net> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#ifndef ZIPIOS_ZIP_HEADER_H
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#define ZIPIOS_ZIP_HEADER_H
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#include <FCGlobal.h>
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#include <zipios++/backbuffer.h>
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#include <zipios++/fcoll.h>
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namespace zipios
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{
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/** ZipHeader is a FileCollection, where the files are stored in a .zip file.
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* The class is similar to zipios' ZipFile class with the difference that instead of
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* a file a std::istream can be passed.
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*/
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class BaseExport ZipHeader: public FileCollection
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{
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public:
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/** Opens the zip file name. If the zip "file" is
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embedded in a file that contains other data, e.g. a binary
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program, the offset of the zip file start and end must be
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specified.
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@param inp The input stream of the zip file to open.
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@param s_off Offset relative to the start of the file, that
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indicates the beginning of the zip file.
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@param e_off Offset relative to the end of the file, that
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indicates the end of the zip file. The offset is a positive number,
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even though the offset is towards the beginning of the file.
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@throw FColException Thrown if the specified file name is not a valid zip
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archive.
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@throw IOException Thrown if an I/O problem is encountered, while the directory
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of the specified zip archive is being read. */
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explicit ZipHeader(std::istream& inp, int s_off = 0, int e_off = 0);
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/** Create a copy of this instance. */
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FileCollection* clone() const override;
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void close() override;
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std::istream* getInputStream(const ConstEntryPointer& entry) override;
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std::istream* getInputStream(const string& entry_name, MatchPath matchpath = MATCH) override;
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private:
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std::istream& _input;
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VirtualSeeker _vs;
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EndOfCentralDirectory _eocd;
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bool init(std::istream& _zipfile);
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bool readCentralDirectory(std::istream& _zipfile);
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bool readEndOfCentralDirectory(std::istream& _zipfile);
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bool confirmLocalHeaders(std::istream& _zipfile);
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void setError(std::string error_str);
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};
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} // namespace zipios
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#endif // ZIPIOS_ZIP_HEADER_H
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