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