/*
 *
 *  Copyright (C) 1994-2010, 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:  dcmdata
 *
 *  Author:  Gerd Ehlers, Andreas Barth
 *
 *  Purpose: Implementation of class DcmUniqueIdentifier
 *
 *  Last Update:      $Author: joergr $
 *  Update Date:      $Date: 2010-10-29 10:57:21 $
 *  CVS/RCS Revision: $Revision: 1.35 $
 *  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/ofstd/ofstream.h"
#include "dcmtk/ofstd/ofstring.h"
#include "dcmtk/ofstd/ofstd.h"
#include "dcmtk/dcmdata/dcvrui.h"
#include "dcmtk/dcmdata/dcuid.h"

#define INCLUDE_CSTRING
#define INCLUDE_CCTYPE
#include "dcmtk/ofstd/ofstdinc.h"


#define MAX_UI_LENGTH 64


// ********************************


DcmUniqueIdentifier::DcmUniqueIdentifier(const DcmTag &tag,
                                         const Uint32 len)
  : DcmByteString(tag, len)
{
    /* padding character is NULL not a space! */
    setPaddingChar('\0');
    setMaxLength(MAX_UI_LENGTH);
    setNonSignificantChars("\\");
}


DcmUniqueIdentifier::DcmUniqueIdentifier(const DcmUniqueIdentifier &old)
  : DcmByteString(old)
{
}


DcmUniqueIdentifier::~DcmUniqueIdentifier()
{
}


DcmUniqueIdentifier &DcmUniqueIdentifier::operator=(const DcmUniqueIdentifier &obj)
{
    DcmByteString::operator=(obj);
    return *this;
}


OFCondition DcmUniqueIdentifier::copyFrom(const DcmObject& rhs)
{
  if (this != &rhs)
  {
    if (rhs.ident() != ident()) return EC_IllegalCall;
    *this = OFstatic_cast(const DcmUniqueIdentifier &, rhs);
  }
  return EC_Normal;
}


// ********************************


DcmEVR DcmUniqueIdentifier::ident() const
{
    return EVR_UI;
}


OFCondition DcmUniqueIdentifier::checkValue(const OFString &vm,
                                            const OFBool /*oldFormat*/)
{
    OFString strVal;
    /* get "raw value" without any modifications (if possible) */
    OFCondition l_error = getStringValue(strVal);
    if (l_error.good())
        l_error = DcmUniqueIdentifier::checkStringValue(strVal, vm);
    return l_error;
}


// ********************************


void DcmUniqueIdentifier::print(STD_NAMESPACE ostream &out,
                                const size_t flags,
                                const int level,
                                const char * /*pixelFileName*/,
                                size_t * /*pixelCounter*/)
{
    if (valueLoaded())
    {
        /* get string data (possibly multi-valued) */
        char *stringVal = NULL;
        getString(stringVal);
        if (stringVal != NULL)
        {
            const char *symbol = NULL;
            if (!(flags & DCMTypes::PF_doNotMapUIDsToNames))
            {
                /* check whether UID number can be mapped to a UID name */
                symbol = dcmFindNameOfUID(stringVal);
            }
            if ((symbol != NULL) && (strlen(symbol) > 0))
            {
                const size_t bufSize = strlen(symbol) + 1 /* for "=" */ + 1;
                char *buffer = new char[bufSize];
                if (buffer != NULL)
                {
                    /* concatenate "=" and the UID name */
                    OFStandard::strlcpy(buffer, "=", bufSize);
                    OFStandard::strlcat(buffer, symbol, bufSize);
                    printInfoLine(out, flags, level, buffer, NULL /*tag*/, OFFalse /*isInfo*/);
                    /* delete temporary character buffer */
                    delete[] buffer;
                } else /* could not allocate buffer */
                    DcmByteString::print(out, flags, level);
            } else /* no symbol (UID name) found or mapping switched off */
                DcmByteString::print(out, flags, level);
        } else
            printInfoLine(out, flags, level, "(no value available)");
    } else
        printInfoLine(out, flags, level, "(not loaded)");
}


// ********************************


OFCondition DcmUniqueIdentifier::putString(const char *stringVal)
{
    const char *uid = stringVal;
    /* check whether parameter contains a UID name instead of a UID number */
    if ((stringVal != NULL) && (stringVal[0] == '='))
        uid = dcmFindUIDFromName(stringVal + 1);
    /* call inherited method to set the UID string */
    return DcmByteString::putString(uid);
}


// ********************************


OFCondition DcmUniqueIdentifier::makeMachineByteString()
{
    /* get string data */
    char *value = OFstatic_cast(char *, getValue());
    /* check whether automatic input data correction is enabled */
    if ((value != NULL) && dcmEnableAutomaticInputDataCorrection.get())
    {
        const int len = strlen(value);
        /*
        ** Remove any leading, embedded, or trailing white space.
        ** This manipulation attempts to correct problems with
        ** incorrectly encoded UIDs which have been observed in
        ** some images.
        */
        int k = 0;
        for (int i = 0; i < len; i++)
        {
           if (!isspace(OFstatic_cast(unsigned char, value[i])))
           {
              value[k] = value[i];
              k++;
           }
        }
        value[k] = '\0';
    }
    /* call inherited method: re-computes the string length, etc. */
    return DcmByteString::makeMachineByteString();
}


// ********************************


OFCondition DcmUniqueIdentifier::checkStringValue(const OFString &value,
                                                  const OFString &vm)
{
    return DcmByteString::checkStringValue(value, vm, "ui", 9, MAX_UI_LENGTH);
}


/*
** CVS/RCS Log:
** $Log: dcvrui.cc,v $
** Revision 1.35  2010-10-29 10:57:21  joergr
** Added support for colored output to the print() method.
**
** Revision 1.34  2010-10-20 16:44:18  joergr
** Use type cast macros (e.g. OFstatic_cast) where appropriate.
**
** Revision 1.33  2010-10-20 07:41:35  uli
** Made sure isalpha() & friends are only called with valid arguments.
**
** Revision 1.32  2010-10-14 13:14:11  joergr
** Updated copyright header. Added reference to COPYRIGHT file.
**
** Revision 1.31  2010-04-23 14:30:35  joergr
** Added new method to all VR classes which checks whether the stored value
** conforms to the VR definition and to the specified VM.
**
** Revision 1.30  2009-08-07 14:35:49  joergr
** Enhanced isEmpty() method by checking whether the data element value consists
** of non-significant characters only.
**
** Revision 1.29  2009-08-03 09:03:00  joergr
** Added methods that check whether a given string value conforms to the VR and
** VM definitions of the DICOM standards.
**
** Revision 1.28  2008-07-17 10:31:32  onken
** Implemented copyFrom() method for complete DcmObject class hierarchy, which
** permits setting an instance's value from an existing object. Implemented
** assignment operator where necessary.
**
** Revision 1.27  2008-02-26 16:59:55  joergr
** Added new print flag that disables the mapping of well-known UID numbers to
** their associated names (e.g. transfer syntax or SOP class).
**
** Revision 1.26  2007/06/29 14:17:49  meichel
** Code clean-up: Most member variables in module dcmdata are now private,
**   not protected anymore.
**
** Revision 1.25  2006/10/13 10:08:44  joergr
** Renamed variable "string" to "stringVal".
**
** Revision 1.24  2006/08/15 15:49:54  meichel
** Updated all code in module dcmdata to correctly compile when
**   all standard C++ classes remain in namespace std.
**
** Revision 1.23  2005/12/08 15:42:06  meichel
** Changed include path schema for all DCMTK header files
**
** Revision 1.22  2004/01/16 13:46:03  joergr
** Adapted type casts to new-style typecast operators defined in ofcast.h.
**
** Revision 1.21  2002/12/06 13:19:26  joergr
** Enhanced "print()" function by re-working the implementation and replacing
** the boolean "showFullData" parameter by a more general integer flag.
** Made source code formatting more consistent with other modules/files.
**
** Revision 1.20  2002/11/27 12:06:59  meichel
** Adapted module dcmdata to use of new header file ofstdinc.h
**
** Revision 1.19  2001/09/25 17:20:01  meichel
** Adapted dcmdata to class OFCondition
**
** Revision 1.18  2001/06/01 15:49:21  meichel
** Updated copyright header
**
** Revision 1.17  2000/04/14 16:10:10  meichel
** Global flag dcmEnableAutomaticInputDataCorrection now derived from OFGlobal
**   and, thus, safe for use in multi-thread applications.
**
** Revision 1.16  2000/03/08 16:26:51  meichel
** Updated copyright header.
**
** Revision 1.15  2000/02/10 10:52:25  joergr
** Added new feature to dcmdump (enhanced print method of dcmdata): write
** pixel data/item value fields to raw files.
**
** Revision 1.14  2000/02/02 14:33:00  joergr
** Replaced 'delete' statements by 'delete[]' for objects created with 'new[]'.
**
** Revision 1.13  1999/03/31 09:26:01  meichel
** Updated copyright header in module dcmdata
**
** Revision 1.12  1998/11/12 16:48:31  meichel
** Implemented operator= for all classes derived from DcmObject.
**
** Revision 1.11  1997/07/21 08:25:35  andreas
** - Replace all boolean types (BOOLEAN, CTNBOOLEAN, DICOM_BOOL, BOOL)
**   with one unique boolean type OFBool.
**
** Revision 1.10  1997/07/03 15:10:20  andreas
** - removed debugging functions Bdebug() and Edebug() since
**   they write a static array and are not very useful at all.
**   Cdebug and Vdebug are merged since they have the same semantics.
**   The debugging functions in dcmdata changed their interfaces
**   (see dcmdata/include/dcdebug.h)
**
** Revision 1.9  1997/04/18 08:17:20  andreas
** - The put/get-methods for all VRs did not conform to the C++-Standard
**   draft. Some Compilers (e.g. SUN-C++ Compiler, Metroworks
**   CodeWarrier, etc.) create many warnings concerning the hiding of
**   overloaded get methods in all derived classes of DcmElement.
**   So the interface of all value representation classes in the
**   library are changed rapidly, e.g.
**   OFCondition get(Uint16 & value, const unsigned long pos);
**   becomes
**   OFCondition getUint16(Uint16 & value, const unsigned long pos);
**   All (retired) "returntype get(...)" methods are deleted.
**   For more information see dcmdata/include/dcelem.h
**
** Revision 1.8  1997/03/26 17:06:30  hewett
** Added global flag for disabling the automatic correction of small errors.
** Such behaviour is undesirable when performing data validation.
**
** Revision 1.7  1996/08/05 08:46:23  andreas
** new print routine with additional parameters:
**         - print into files
**         - fix output length for elements
** corrected error in search routine with parameter ESM_fromStackTop
**
** Revision 1.6  1996/05/31 09:09:51  hewett
** Unique Identifiers which are incorrectly encoded with leading, embedded
** or trailing white space are now corrected.
**
** Revision 1.5  1996/05/30 17:19:33  hewett
** Added a makeMachineByteString() method to strip and trailing whitespace
** from a UID.
**
** Revision 1.4  1996/01/29 13:38:34  andreas
** - new put method for every VR to put value as a string
** - better and unique print methods
**
*/