// © 2016 and later: Unicode, Inc. and others.

// License & terms of use: http://www.unicode.org/copyright.html

/*

******************************************************************************

*

*   Copyright (C) 1998-2004, International Business Machines

*   Corporation and others.  All Rights Reserved.

*

******************************************************************************

*

*  ucnvdisp.c:

*  Implements APIs for the ICU's codeset conversion library display names.

*

* Modification History:

*

*   Date        Name        Description

*   04/04/99    helena      Fixed internal header inclusion.

*   05/09/00    helena      Added implementation to handle fallback mappings.

*   06/20/2000  helena      OS/400 port changes; mostly typecast.

*   09/08/2004  grhoten     split from ucnv.c

*/

#include "unicode/utypes.h"

#if !UCONFIG_NO_CONVERSION

#include "unicode/ustring.h"

#include "unicode/ures.h"

#include "unicode/ucnv.h"

#include "cstring.h"

#include "ustr_imp.h"

#include "ucnv_imp.h"

#include "putilimp.h"

U_CAPI int32_t U_EXPORT2

ucnv_getDisplayName(const UConverter *cnv,

                    const char *displayLocale,

                    UChar *displayName, int32_t displayNameCapacity,

                    UErrorCode *pErrorCode) {

    UResourceBundle *rb;

    const UChar *name;

    int32_t length;

    UErrorCode localStatus = U_ZERO_ERROR;

    /* check arguments */

    if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {

        return 0;

    }

    if(cnv==NULL || displayNameCapacity<0 || (displayNameCapacity>0 && displayName==NULL)) {

        *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;

        return 0;

    }

    /* open the resource bundle and get the display name string */

    rb=ures_open(NULL, displayLocale, pErrorCode);

    if(U_FAILURE(*pErrorCode)) {

        return 0;

    }

    /* use the internal name as the key */

    name=ures_getStringByKey(rb, cnv->sharedData->staticData->name, &length, &localStatus);

    ures_close(rb);

    if(U_SUCCESS(localStatus)) {

        /* copy the string */

        if (*pErrorCode == U_ZERO_ERROR) {

            *pErrorCode = localStatus;

        }

        u_memcpy(displayName, name, uprv_min(length, displayNameCapacity)*U_SIZEOF_UCHAR);

    } else {

        /* convert the internal name into a Unicode string */

        length=(int32_t)uprv_strlen(cnv->sharedData->staticData->name);

        u_charsToUChars(cnv->sharedData->staticData->name, displayName, uprv_min(length, displayNameCapacity));

    }

    return u_terminateUChars(displayName, displayNameCapacity, length, pErrorCode);

}

#endif

/*

 * Hey, Emacs, please set the following:

 *

 * Local Variables:

 * indent-tabs-mode: nil

 * End:

 *

 */