ref: f1a25692ec05e896866281bbf725fe915e3646fe
dir: /common/id3lib/src/uint28.cpp/
// id3lib: a C++ library for creating and manipulating id3v1/v2 tags // $Id: uint28.cpp,v 1.1 2002/01/21 08:16:22 menno Exp $ // This library is free software; you can redistribute it and/or modify it // under the terms of the GNU Library General Public License as published by // the Free Software Foundation; either version 2 of the License, or (at your // option) any later version. // // This library is distributed in the hope that it will be useful, but WITHOUT // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public // License for more details. // // You should have received a copy of the GNU Library General Public License // along with this library; if not, write to the Free Software Foundation, // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. // The id3lib authors encourage improvements and optimisations to be sent to // the id3lib coordinator. Please see the README file for details on where to // send such submissions. See the AUTHORS file for a list of people who have // contributed to id3lib. See the ChangeLog file for a list of changes to // id3lib. These files are distributed with id3lib at // http://download.sourceforge.net/id3lib/ #include "uint28.h" #include <string.h> #include <iomanip.h> #if defined HAVE_CONFIG_H #include <config.h> #endif uint28& uint28::operator=(const uchar* const data) { __value = 0; for (size_t i = 0; i < sizeof(uint32); ++i) { __value = (__value << 7) | static_cast<uint32>(data[i]) & MASK7; } return *this; } void uint28::Render(uchar* data) const { memset(data, '\0', sizeof(uint32)); for (uint32 val = this->to_uint32(), i = 0; i < sizeof(uint32); val >>= 7, ++i) { data[sizeof(uint32) - i - 1] = static_cast<uchar>(val & MASK7); } // return data; } ostream& operator<<(ostream& os, uint28& val) { uchar data[sizeof(uint32)]; val.Render(data); for (uchar* p = data; p != data + sizeof(uint32); ++p) { os << *p; } return os; } istream& operator>>(istream& in, uint28& val) { uchar data[sizeof(uint32) + 1]; in >> setw(sizeof(uint32) + 1) >> data; val = data; return in; }