Digest.h
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//-*****************************************************************************
//
// Copyright (c) 2009-2012,
// Sony Pictures Imageworks Inc. and
// Industrial Light & Magic, a division of Lucasfilm Entertainment Company Ltd.
//
// All rights reserved.
//
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// modification, are permitted provided that the following conditions are
// met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
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// Industrial Light & Magic, nor the names of their contributors may be used
// to endorse or promote products derived from this software without specific
// prior written permission.
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//-*****************************************************************************
#ifndef Alembic_Util_Digest_h
#define Alembic_Util_Digest_h
#include <Alembic/Util/Foundation.h>
#include <Alembic/Util/PlainOldDataType.h>
namespace Alembic {
namespace Util {
namespace ALEMBIC_VERSION_NS {
//-*************************************************************************
// Digest class. This is a 128 bit hash key produced by our hashing algorithm.
// It is totally ordered, by way of the totally_ordered operator template.
struct Digest : public Alembic::Util::totally_ordered<Digest>
{
union
{
uint8_t d[16];
uint64_t words[2];
};
Digest() { words[0] = words[1] = 0; }
Digest( const Digest &copy )
{
words[0] = copy.words[0];
words[1] = copy.words[1];
}
Digest &operator=( const Digest &copy )
{
words[0] = copy.words[0];
words[1] = copy.words[1];
return *this;
}
uint8_t& operator[]( size_t i ) { return d[i]; }
uint8_t operator[]( size_t i ) const { return d[i]; }
void print( std::ostream &ostr ) const
{
for ( int i = 0; i < 16; ++i )
{
ostr << std::setfill( '0' ) << std::setw( 2 ) <<
std::hex << std::noshowbase << ( int ) d[i];
}
}
std::string str() const
{
std::stringstream sstr;
print( sstr );
return sstr.str();
}
//-*************************************************************************
// ORDERING AND COMPARISON OPERATORS
//-*************************************************************************
bool operator==( const Digest &iRhs ) const
{
return ( ( words[0] == iRhs.words[0] ) &&
( words[1] == iRhs.words[1] ) );
}
bool operator<( const Digest &iRhs ) const
{
return ( words[0] < iRhs.words[0] ? true :
( words[0] > iRhs.words[0] ? false :
( words[1] < iRhs.words[1] ) ) );
}
};
//-*****************************************************************************
inline std::ostream &operator<<( std::ostream &ostr, const Digest &a )
{
a.print( ostr );
return ostr;
}
} // End namespace ALEMBIC_VERSION_NS
using namespace ALEMBIC_VERSION_NS;
} // End namespace Util
} // End namespace Alembic
#endif
PlainOldDataType.h
Foundation.h
ALEMBIC_VERSION_NS
#define ALEMBIC_VERSION_NS
Definition: Foundation.h:105
Alembic::Util::ALEMBIC_VERSION_NS::totally_ordered
Definition: Foundation.h:194
Alembic::Util::ALEMBIC_VERSION_NS::operator<<
std::ostream & operator<<(std::ostream &ostr, const Digest &a)
Definition: Digest.h:109
Alembic
Alembic namespace ...
Definition: ArchiveInfo.h:46
Alembic::Util::ALEMBIC_VERSION_NS::Digest
Definition: Digest.h:51
Alembic::Util::ALEMBIC_VERSION_NS::Digest::operator<
bool operator<(const Digest &iRhs) const
Definition: Digest.h:100
Alembic::Util::ALEMBIC_VERSION_NS::Digest::operator[]
uint8_t & operator[](size_t i)
Definition: Digest.h:72
Alembic::Util::ALEMBIC_VERSION_NS::Digest::Digest
Digest()
Definition: Digest.h:58
Alembic::Util::ALEMBIC_VERSION_NS::Digest::d
uint8_t d[16]
Definition: Digest.h:54
Alembic::Util::ALEMBIC_VERSION_NS::Digest::str
std::string str() const
Definition: Digest.h:84
Alembic::Util::ALEMBIC_VERSION_NS::Digest::Digest
Digest(const Digest &copy)
Definition: Digest.h:59
Alembic::Util::ALEMBIC_VERSION_NS::Digest::words
uint64_t words[2]
Definition: Digest.h:55
Alembic::Util::ALEMBIC_VERSION_NS::Digest::operator==
bool operator==(const Digest &iRhs) const
Definition: Digest.h:94
Alembic::Util::ALEMBIC_VERSION_NS::Digest::operator[]
uint8_t operator[](size_t i) const
Definition: Digest.h:73
Alembic::Util::ALEMBIC_VERSION_NS::Digest::print
void print(std::ostream &ostr) const
Definition: Digest.h:75
Alembic::Util::ALEMBIC_VERSION_NS::Digest::operator=
Digest & operator=(const Digest &copy)
Definition: Digest.h:65