99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
/*
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*******************************************************************************
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*
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* Copyright (C) 2002, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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* file name: uenum.c
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:2
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*
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* created on: 2002jul08
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* created by: Vladimir Weinstein
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*/
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#include "uenumimp.h"
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#include "cmemory.h"
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static const UEnumeration nullEnumeration = {
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NULL, /* context */
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NULL, /* close */
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NULL, /* count */
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NULL, /* uNext */
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NULL, /* next */
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NULL /* reset */
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};
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U_CAPI void U_EXPORT2
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uenum_close(UEnumeration* en)
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{
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if (en) {
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if (en->close != NULL) {
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en->close(en);
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} else { /* this seems dangerous, but we better kill the object */
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uprv_free(en);
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}
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}
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}
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U_CAPI int32_t U_EXPORT2
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uenum_count(UEnumeration* en, UErrorCode* status)
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{
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if (!en || U_FAILURE(*status)) {
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return -1;
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}
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if (en->count != NULL) {
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return en->count(en, status);
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} else {
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*status = U_UNSUPPORTED_ERROR;
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return -1;
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}
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}
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U_CAPI const UChar* U_EXPORT2
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uenum_unext(UEnumeration* en,
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int32_t* resultLength,
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UErrorCode* status)
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{
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if (!en || U_FAILURE(*status)) {
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return NULL;
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}
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if (en->uNext != NULL) {
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return en->uNext(en, resultLength, status);
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} else {
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*status = U_UNSUPPORTED_ERROR;
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return NULL;
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}
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}
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U_CAPI const char* U_EXPORT2
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uenum_next(UEnumeration* en,
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int32_t* resultLength,
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UErrorCode* status)
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{
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if (!en || U_FAILURE(*status)) {
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return NULL;
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}
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if (en->next != NULL) {
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return en->next(en, resultLength, status);
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} else {
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*status = U_UNSUPPORTED_ERROR;
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return NULL;
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}
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}
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U_CAPI void U_EXPORT2
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uenum_reset(UEnumeration* en, UErrorCode* status)
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{
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if (!en || U_FAILURE(*status)) {
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return;
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}
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if (en->reset != NULL) {
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en->reset(en, status);
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} else {
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*status = U_UNSUPPORTED_ERROR;
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}
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}
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