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// © 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: 
 * 
 */