1// © 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 char16_t *displayName, int32_t displayNameCapacity,
39 UErrorCode *pErrorCode) {
40 UResourceBundle *rb;
41 const char16_t *name;
42 int32_t length;
43 UErrorCode localStatus = U_ZERO_ERROR;
44
45 /* check arguments */
46 if(pErrorCode==nullptr || U_FAILURE(*pErrorCode)) {
47 return 0;
48 }
49
50 if(cnv==nullptr || displayNameCapacity<0 || (displayNameCapacity>0 && displayName==nullptr)) {
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(nullptr, 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