271 lines
14 KiB
C
271 lines
14 KiB
C
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/*
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*
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* Copyright (C) 1994-2015, 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, Joerg Riesmeier
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*
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* Purpose: Interface of class DcmDateTime
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*
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*/
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#ifndef DCVRDT_H
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#define DCVRDT_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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#include "dcmtk/ofstd/ofdatime.h"
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/** a class representing the DICOM value representation 'Date Time' (DT)
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*/
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class DCMTK_DCMDATA_EXPORT DcmDateTime
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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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DcmDateTime(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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DcmDateTime(const DcmDateTime &old);
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/** destructor
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*/
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virtual ~DcmDateTime();
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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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DcmDateTime &operator=(const DcmDateTime &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 DcmDateTime(*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_DT)
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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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/** get a copy of a particular string component
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* @param stringValue 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 spaces 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 &stringValue,
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const unsigned long pos,
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OFBool normalize = OFTrue);
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/** set the element value to the current system date and time.
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* The DICOM DT format supported by this function is "YYYYMMDDHHMM[SS[.FFFFFF]][&ZZZZ]"
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* where the brackets enclose optional parts. If the current system date/time or parts
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* of it are unavailable the corresponding values are set to "0" and an error code is
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* returned - in fact, the date is set to "19000101" if unavailable.
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* @param seconds add optional seconds ("SS") if OFTrue
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* @param fraction add optional fractional part of a second (".FFFFFF") if OFTrue
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* (requires parameter 'seconds' to be also OFTrue)
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* @param timeZone add optional time zone ("&ZZZZ" where "&" is "+" or "-") if OFTrue.
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* The time zone is given as the offset (hours and minutes) from Coordinated Universal
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* Time (UTC).
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* @return EC_Normal upon success, an error code otherwise
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*/
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OFCondition setCurrentDateTime(const OFBool seconds = OFTrue,
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const OFBool fraction = OFFalse,
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const OFBool timeZone = OFFalse);
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/** set the element value to the given date and time
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* @param dateTimeValue date to be set (should be a valid date and time)
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* @return EC_Normal upon success, an error code otherwise
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*/
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OFCondition setOFDateTime(const OFDateTime &dateTimeValue);
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/** get the current element value in OFDateTime format.
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* Please note that the element value is expected to be in valid DICOM DT format
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* ("YYYYMMDD[HH[MM[SS[.FFFFFF]]]][&ZZZZ]"). If the optional time zone ("&ZZZZ") is
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* missing the local time zone is used.
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* If this function fails the result variable 'dateTimeValue' is cleared automatically.
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* @param dateTimeValue reference to OFDateTime variable where the result is stored
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* @param pos index of the element component in case of value multiplicity (0..vm-1)
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* @return EC_Normal upon success, an error code otherwise
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*/
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OFCondition getOFDateTime(OFDateTime &dateTimeValue,
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const unsigned long pos = 0);
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/** get the current element value in ISO date/time format.
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* The ISO date/time format supported by this function is "YYYY-MM-DD[ HH:MM[:SS[.FFFFFF]]]
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* [&HH:MM]" where the brackets enclose optional parts. Please note that the element value
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* is expected to be in valid DICOM DT format ("YYYYMMDD[HH[MM[SS[.FFFFFF]]]][&ZZZZ]").
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* If this function fails or the current element value is empty, the result variable
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* 'formattedDateTime' is cleared automatically.
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* @param formattedDateTime reference to string variable where the result is stored
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* @param pos index of the element component in case of value multiplicity (0..vm-1)
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* @param seconds add optional seconds (":SS") if OFTrue
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* @param fraction add optional fractional part of a second (".FFFFFF") if OFTrue
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* (requires parameter 'seconds' to be also OFTrue)
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* @param timeZone add optional time zone ("&HH:MM" where "&" is "+" or "-") if OFTrue.
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* The time zone is given as the offset (hours and minutes) from Coordinated Universal
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* Time (UTC). Please note that the formatted time output is not adapted to the local
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* time if the time zone is omitted.
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* @param createMissingPart if OFTrue create optional parts (seconds, fractional part of
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* a seconds and/or time zone) if absent in the element value
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* @param dateTimeSeparator separator between ISO date and time value
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* @param timeZoneSeparator separator between ISO time value and time zone
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* @return EC_Normal upon success, an error code otherwise
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*/
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OFCondition getISOFormattedDateTime(OFString &formattedDateTime,
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const unsigned long pos = 0,
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const OFBool seconds = OFTrue,
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const OFBool fraction = OFFalse,
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const OFBool timeZone = OFTrue,
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const OFBool createMissingPart = OFFalse,
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const OFString &dateTimeSeparator = " ",
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const OFString &timeZoneSeparator = " ");
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/* --- static helper functions --- */
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/** get the current system date and time.
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* The DICOM DT format supported by this function is "YYYYMMDDHHMM[SS[.FFFFFF]][&ZZZZ]"
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* where the brackets enclose optional parts. If the current system date/time or parts
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* of it are unavailable the corresponding values are set to "0" and an error code is
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* returned - in fact, the date is set to "19000101" if unavailable.
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* @param dicomDateTime reference to string variable where the result is stored
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* @param seconds add optional seconds ("SS") if OFTrue
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* @param fraction add optional fractional part of a second (".FFFFFF") if OFTrue
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* (requires parameter 'seconds' to be also OFTrue)
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* @param timeZone add optional time zone ("&ZZZZ" where "&" is "+" or "-") if OFTrue.
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* The time zone is given as the offset (hours and minutes) from Coordinated Universal
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* Time (UTC).
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* @return EC_Normal upon success, an error code otherwise
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*/
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static OFCondition getCurrentDateTime(OFString &dicomDateTime,
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const OFBool seconds = OFTrue,
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const OFBool fraction = OFFalse,
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const OFBool timeZone = OFFalse);
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/** get the specified OFDateTime value in DICOM format.
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* The DICOM DT format supported by this function is "YYYYMMDDHHMM[SS[.FFFFFF]][&ZZZZ]"
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* where the brackets enclose optional parts. If the current system date/time or parts
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* of it are unavailable the corresponding values are set to "0" and an error code is
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* returned - in fact, the date is set to "19000101" if unavailable.
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* @param dateTimeValue date and time to be converted to DICOM format
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* @param dicomDateTime reference to string variable where the result is stored
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* @param seconds add optional seconds ("SS") if OFTrue
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* @param fraction add optional fractional part of a second (".FFFFFF") if OFTrue
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* (requires parameter 'seconds' to be also OFTrue)
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* @param timeZone add optional time zone ("&ZZZZ" where "&" is "+" or "-") if OFTrue.
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* The time zone is given as the offset (hours and minutes) from Coordinated Universal
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* Time (UTC).
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* @return EC_Normal upon success, an error code otherwise
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*/
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static OFCondition getDicomDateTimeFromOFDateTime(const OFDateTime &dateTimeValue,
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OFString &dicomDateTime,
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const OFBool seconds = OFTrue,
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const OFBool fraction = OFFalse,
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const OFBool timeZone = OFFalse);
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/** get the specified DICOM date and time value in OFDateTime format.
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* Please note that the element value is expected to be in valid DICOM DT format
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* ("YYYYMMDD[HH[MM[SS[.FFFFFF]]]][&ZZZZ]"). If the optional time zone ("&ZZZZ") is
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* missing the local time zone is used.
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* If this function fails, the result variable 'dateTimeValue' is cleared automatically.
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* @param dicomDateTime string value in DICOM DT format to be converted to ISO format.
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* An empty string is not regarded as valid input, since the date/time would be unknown.
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* @param dateTimeValue reference to OFDateTime variable where the result is stored
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* @return EC_Normal upon success, an error code otherwise
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*/
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static OFCondition getOFDateTimeFromString(const OFString &dicomDateTime,
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OFDateTime &dateTimeValue);
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/** get the specified DICOM datetime value in ISO format.
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* The ISO date/time format supported by this function is "YYYY-MM-DD[ HH:MM[:SS[.FFFFFF]]]
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* [&HH:MM]" where the brackets enclose optional parts. Please note that the specified
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* value is expected to be in valid DICOM DT format ("YYYYMMDD[HH[MM[SS[.FFFFFF]]]][&ZZZZ]").
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* If this function fails or the specified DICOM datetime value is empty, the result
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* variable 'formattedDateTime' is cleared automatically.
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* @param dicomDateTime string value in DICOM DT format to be converted to ISO format
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* @param formattedDateTime reference to string variable where the result is stored
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* @param seconds add optional seconds (":SS") if OFTrue
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* @param fraction add optional fractional part of a second (".FFFFFF") if OFTrue
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* (requires parameter 'seconds' to be also OFTrue)
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* @param timeZone add optional time zone ("&HH:MM" where "&" is "+" or "-") if OFTrue.
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* The time zone is given as the offset (hours and minutes) from the Coordinated Universal
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* Time (UTC). Please note that the formatted time output is not adapted to the local time
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* if the time zone is omitted.
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* @param createMissingPart if OFTrue create optional parts (seconds, fractional part of
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* a seconds and/or time zone) if absent in the element value
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* @param dateTimeSeparator separator between ISO date and time value
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* @param timeZoneSeparator separator between ISO time value and time zone
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* @return EC_Normal upon success, an error code otherwise
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*/
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static OFCondition getISOFormattedDateTimeFromString(const OFString &dicomDateTime,
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OFString &formattedDateTime,
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const OFBool seconds = OFTrue,
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const OFBool fraction = OFFalse,
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const OFBool timeZone = OFTrue,
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const OFBool createMissingPart = OFFalse,
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const OFString &dateTimeSeparator = " ",
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const OFString &timeZoneSeparator = " ");
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/** check whether given string value conforms to the VR "DT" (Date Time)
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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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};
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#endif // DCVRDT_H
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