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/*
*
* Copyright (C) 2002-2010, OFFIS e.V.
* All rights reserved. See COPYRIGHT file for details.
*
* This software and supporting documentation were developed by
*
* OFFIS e.V.
* R&D Division Health
* Escherweg 2
* D-26121 Oldenburg, Germany
*
*
* Module: ofstd
*
* Author: Marco Eichelberg
*
* Purpose: general purpose 32-bit CRC in C++
* Code is based on the CRC32 implementation (C)1986 Gary S. Brown
*
* Last Update: $Author: joergr $
* Update Date: $Date: 2010-10-14 13:14:08 $
* CVS/RCS Revision: $Revision: 1.7 $
* Status: $State: Exp $
*
* CVS/RCS Log at end of file
*
*/
#include "dcmtk/config/osconfig.h" /* make sure OS specific configuration is included first */
#include "dcmtk/dcmdata/dcpcache.h"
#include "dcmtk/dcmdata/dcelem.h" /* for DcmElement, DcmObject */
DcmPrivateTagCacheEntry::DcmPrivateTagCacheEntry(const DcmTagKey& tk, const char *pc)
: tagKey(tk)
, privateCreator(pc)
{
}
DcmPrivateTagCacheEntry::~DcmPrivateTagCacheEntry()
{
}
const char *DcmPrivateTagCacheEntry::getPrivateCreator() const
{
return privateCreator.c_str();
}
OFBool DcmPrivateTagCacheEntry::isPrivateCreatorFor(const DcmTagKey& tk) const
{
return (tagKey.getGroup() == tk.getGroup()) &&
((tagKey.getElement() << 8) == (tk.getElement() & 0xff00));
}
/* ======================================================================= */
DcmPrivateTagCache::DcmPrivateTagCache()
: list_()
{
}
DcmPrivateTagCache::~DcmPrivateTagCache()
{
clear();
}
void DcmPrivateTagCache::clear()
{
OFListIterator(DcmPrivateTagCacheEntry *) first = list_.begin();
OFListIterator(DcmPrivateTagCacheEntry *) last = list_.end();
while (first != last)
{
delete (*first);
first = list_.erase(first);
}
}
const char *DcmPrivateTagCache::findPrivateCreator(const DcmTagKey& tk) const
{
OFListConstIterator(DcmPrivateTagCacheEntry *) first = list_.begin();
OFListConstIterator(DcmPrivateTagCacheEntry *) last = list_.end();
while (first != last)
{
if ((*first)->isPrivateCreatorFor(tk)) return (*first)->getPrivateCreator();
++first;
}
return NULL;
}
void DcmPrivateTagCache::updateCache(DcmObject *dobj)
{
if (dobj)
{
const DcmTag& tag = dobj->getTag();
if (dobj->isLeaf() && (tag.getGTag() & 1) && (tag.getETag() <= 0xff) && (tag.getETag() >= 0x10))
{
// dobj is DcmElement containing private creator
char *c = NULL;
if ((OFstatic_cast(DcmElement *, dobj)->getString(c)).good() && c)
{
list_.push_back(new DcmPrivateTagCacheEntry(tag, c));
}
}
}
}
/*
* CVS/RCS Log:
* $Log: dcpcache.cc,v $
* Revision 1.7 2010-10-14 13:14:08 joergr
* Updated copyright header. Added reference to COPYRIGHT file.
*
* Revision 1.6 2006/07/24 15:43:52 meichel
* Fixed memory leak in private tag lookup cache.
*
* Revision 1.5 2005/12/08 15:41:24 meichel
* Changed include path schema for all DCMTK header files
*
* Revision 1.4 2004/10/20 15:56:15 meichel
* Changed private inheritance from OFList to class member,
* needed for compilation with HAVE_STL.
*
* Revision 1.3 2004/02/04 16:40:48 joergr
* Adapted type casts to new-style typecast operators defined in ofcast.h.
* Removed acknowledgements with e-mail addresses from CVS log.
*
* Revision 1.2 2003/06/12 18:22:23 joergr
* Modified code to use const_iterators where appropriate (required for STL).
*
* Revision 1.1 2002/07/23 14:21:34 meichel
* Added support for private tag data dictionaries to dcmdata
*
*
*/
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