1// Copyright (C) 2016 and later: Unicode, Inc. and others.
2// License & terms of use: http://www.unicode.org/copyright.html
3/*
4******************************************************************************
5*
6*   Copyright (C) 1998-2004, International Business Machines
7*   Corporation and others.  All Rights Reserved.
8*
9******************************************************************************
10*
11*  ucnvdisp.c:
12*  Implements APIs for the ICU's codeset conversion library display names.
13*
14* Modification History:
15*
16*   Date        Name        Description
17*   04/04/99    helena      Fixed internal header inclusion.
18*   05/09/00    helena      Added implementation to handle fallback mappings.
19*   06/20/2000  helena      OS/400 port changes; mostly typecast.
20*   09/08/2004  grhoten     split from ucnv.c
21*/
22
23#include "unicode/utypes.h"
24
25#if !UCONFIG_NO_CONVERSION
26
27#include "unicode/ustring.h"
28#include "unicode/ures.h"
29#include "unicode/ucnv.h"
30#include "cstring.h"
31#include "ustr_imp.h"
32#include "ucnv_imp.h"
33#include "putilimp.h"
34
35U_CAPI int32_t U_EXPORT2
36ucnv_getDisplayName(const UConverter *cnv,
37                    const char *displayLocale,
38                    UChar *displayName, int32_t displayNameCapacity,
39                    UErrorCode *pErrorCode) {
40    UResourceBundle *rb;
41    const UChar *name;
42    int32_t length;
43    UErrorCode localStatus = U_ZERO_ERROR;
44
45    /* check arguments */
46    if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
47        return 0;
48    }
49
50    if(cnv==NULL || displayNameCapacity<0 || (displayNameCapacity>0 && displayName==NULL)) {
51        *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
52        return 0;
53    }
54
55    /* open the resource bundle and get the display name string */
56    rb=ures_open(NULL, displayLocale, pErrorCode);
57    if(U_FAILURE(*pErrorCode)) {
58        return 0;
59    }
60
61    /* use the internal name as the key */
62    name=ures_getStringByKey(rb, cnv->sharedData->staticData->name, &length, &localStatus);
63    ures_close(rb);
64
65    if(U_SUCCESS(localStatus)) {
66        /* copy the string */
67        if (*pErrorCode == U_ZERO_ERROR) {
68            *pErrorCode = localStatus;
69        }
70        u_memcpy(displayName, name, uprv_min(length, displayNameCapacity)*U_SIZEOF_UCHAR);
71    } else {
72        /* convert the internal name into a Unicode string */
73        length=(int32_t)uprv_strlen(cnv->sharedData->staticData->name);
74        u_charsToUChars(cnv->sharedData->staticData->name, displayName, uprv_min(length, displayNameCapacity));
75    }
76    return u_terminateUChars(displayName, displayNameCapacity, length, pErrorCode);
77}
78
79#endif
80
81/*
82 * Hey, Emacs, please set the following:
83 *
84 * Local Variables:
85 * indent-tabs-mode: nil
86 * End:
87 *
88 */
89