176 lines
7.0 KiB
C++
176 lines
7.0 KiB
C++
/*
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*
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* Copyright (C) 1994-2013, OFFIS e.V.
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* All rights reserved. See COPYRIGHT file for details.
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*
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* This software and supporting documentation were developed by
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*
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* OFFIS e.V.
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* R&D Division Health
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* Escherweg 2
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* D-26121 Oldenburg, Germany
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*
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*
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* Module: dcmdata
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*
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* Author: Gerd Ehlers, Andreas Barth
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*
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* Purpose: Interface of class DcmUniqueIdentifier
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*
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*/
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#ifndef DCVRUI_H
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#define DCVRUI_H
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#include "dcmtk/config/osconfig.h" /* make sure OS specific configuration is included first */
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#include "dcmtk/dcmdata/dcbytstr.h"
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/** a class representing the DICOM value representation 'Unique Identifier' (UI)
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*/
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class DCMTK_DCMDATA_EXPORT DcmUniqueIdentifier
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: public DcmByteString
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{
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public:
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/** constructor.
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* Create new element from given tag and length.
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* @param tag DICOM tag for the new element
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* @param len value length for the new element
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*/
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DcmUniqueIdentifier(const DcmTag &tag,
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const Uint32 len = 0);
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/** copy constructor
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* @param old element to be copied
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*/
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DcmUniqueIdentifier(const DcmUniqueIdentifier &old);
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/** destructor
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*/
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virtual ~DcmUniqueIdentifier();
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/** assignment operator
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* @param obj element to be assigned/copied
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* @return reference to this object
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*/
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DcmUniqueIdentifier &operator=(const DcmUniqueIdentifier &obj);
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/** clone method
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* @return deep copy of this object
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*/
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virtual DcmObject *clone() const
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{
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return new DcmUniqueIdentifier(*this);
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}
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/** Virtual object copying. This method can be used for DcmObject
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* and derived classes to get a deep copy of an object. Internally
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* the assignment operator is called if the given DcmObject parameter
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* is of the same type as "this" object instance. If not, an error
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* is returned. This function permits copying an object by value
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* in a virtual way which therefore is different to just calling the
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* assignment operator of DcmElement which could result in slicing
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* the object.
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* @param rhs - [in] The instance to copy from. Has to be of the same
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* class type as "this" object
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* @return EC_Normal if copying was successful, error otherwise
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*/
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virtual OFCondition copyFrom(const DcmObject& rhs);
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/** get element type identifier
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* @return type identifier of this class (EVR_UI)
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*/
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virtual DcmEVR ident() const;
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/** check whether stored value conforms to the VR and to the specified VM
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* @param vm value multiplicity (according to the data dictionary) to be checked for.
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* (See DcmElement::checkVM() for a list of valid values.)
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* @param oldFormat parameter not used for this VR (only for DA, TM)
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* @return status of the check, EC_Normal if value is correct, an error code otherwise
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*/
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virtual OFCondition checkValue(const OFString &vm = "1-n",
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const OFBool oldFormat = OFFalse);
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/** print element to a stream.
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* The output format of the value is a backslash separated sequence of string
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* components. In case of a single component the UID number is mapped to the
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* corresponding UID name (using "dcmFindNameOfUID()") if available. A "=" is
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* used as a prefix to distinguish the UID name from the UID number.
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* NB: This mapping of UID names only works for single-valued strings.
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* @param out output stream
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* @param flags optional flag used to customize the output (see DCMTypes::PF_xxx)
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* @param level current level of nested items. Used for indentation.
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* @param pixelFileName not used
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* @param pixelCounter not used
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*/
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virtual void print(STD_NAMESPACE ostream&out,
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const size_t flags = 0,
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const int level = 0,
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const char *pixelFileName = NULL,
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size_t *pixelCounter = NULL);
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/** get a copy of a particular string component
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* @param stringVal variable in which the result value is stored
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* @param pos index of the value in case of multi-valued elements (0..vm-1)
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* @param normalize delete trailing NULL-byte(s) if OFTrue
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* @return status, EC_Normal if successful, an error code otherwise
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*/
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virtual OFCondition getOFString(OFString &stringVal,
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const unsigned long pos,
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OFBool normalize = OFTrue);
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/** set element value from the given character string.
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* If the string starts with a "=" the subsequent characters are interpreted as a
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* UID name and mapped to the corresponding UID number (using "dcmFindUIDFromName()")
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* if possible. Otherwise the leading "=" is removed.
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* NB: This mapping of UID names only works for single-valued input strings.
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* @param stringVal input character string (possibly multi-valued)
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* @return status, EC_Normal if successful, an error code otherwise
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*/
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virtual OFCondition putString(const char *stringVal);
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/** set element value from the given character string.
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* If the string starts with a "=" the subsequent characters are interpreted as a
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* UID name and mapped to the corresponding UID number (using "dcmFindUIDFromName()")
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* if possible. Otherwise the leading "=" is removed.
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* NB: This mapping of UID names only works for single-valued input strings.
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* The length of the string has to be specified explicitly. The string can, therefore,
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* also contain more than one NULL byte.
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* @param stringVal input character string (possibly multi-valued)
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* @param stringLen length of the string (number of characters without the trailing
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* NULL byte)
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* @return status, EC_Normal if successful, an error code otherwise
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*/
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virtual OFCondition putString(const char *stringVal,
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const Uint32 stringLen);
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/* --- static helper functions --- */
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/** check whether given string value conforms to the VR "UI" (Unique Identifier)
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* and to the specified VM.
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* @param value string value to be checked (possibly multi-valued)
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* @param vm value multiplicity (according to the data dictionary) to be checked for.
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* (See DcmElement::checkVM() for a list of valid values.)
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* @return status of the check, EC_Normal if value is correct, an error code otherwise
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*/
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static OFCondition checkStringValue(const OFString &value,
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const OFString &vm = "1-n");
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protected:
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/** convert currently stored string value to internal representation.
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* It removes any leading, embedded and trailing space character and recomputes
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* the string length. This manipulation attempts to correct problems with
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* incorrectly encoded UIDs which have been observed in some images.
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* @param length number of characters of the string value (optional)
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* @return status, EC_Normal if successful, an error code otherwise
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*/
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virtual OFCondition makeMachineByteString(const Uint32 length = 0);
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};
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#endif // DCVRUI_H
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