tor-browser

The Tor Browser
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ucnvdisp.cpp (2703B)

      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 
     35 U_CAPI int32_t U_EXPORT2
     36 ucnv_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 */