Check in the pristine copy of ICU 4.6...

icu46/source/common/ucnvdisp.c

+/*
+******************************************************************************
+*
+*   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:
+ *
+ */