scuffed-code/icu4c/source/common/ustrenum.cpp

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/*
**********************************************************************
* Copyright (c) 2002, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
* Author: Alan Liu
* Created: November 11 2002
* Since: ICU 2.4
**********************************************************************
*/
#include "unicode/ustring.h"
#include "unicode/strenum.h"
#include "uenumimp.h"
#include "ustrenum.h"
#include "cstring.h"
#include "cmemory.h"
#define THIS(en) ((StringEnumeration*)(en->context))
StringEnumeration::~StringEnumeration() {}
U_CDECL_BEGIN
/**
* Wrapper API to make StringEnumeration look like UEnumeration.
*/
static void U_CALLCONV
ustrenum_close(UEnumeration* en) {
delete THIS(en);
uprv_free(en);
}
/**
* Wrapper API to make StringEnumeration look like UEnumeration.
*/
static int32_t U_CALLCONV
ustrenum_count(UEnumeration* en,
UErrorCode* ec)
{
return THIS(en)->count(*ec);
}
/**
* Wrapper API to make StringEnumeration look like UEnumeration.
*/
static const UChar* U_CALLCONV
ustrenum_unext(UEnumeration* en,
int32_t* resultLength,
UErrorCode* ec)
{
return THIS(en)->unext(resultLength, *ec);
}
/**
* Wrapper API to make StringEnumeration look like UEnumeration.
*/
static const char* U_CALLCONV
ustrenum_next(UEnumeration* en,
int32_t* resultLength,
UErrorCode* ec)
{
return THIS(en)->next(resultLength, *ec);
}
/**
* Wrapper API to make StringEnumeration look like UEnumeration.
*/
static void U_CALLCONV
ustrenum_reset(UEnumeration* en,
UErrorCode* ec)
{
THIS(en)->reset(*ec);
}
/**
* Pseudo-vtable for UEnumeration wrapper around StringEnumeration.
* The StringEnumeration pointer will be stored in 'context'.
*/
static const UEnumeration TEMPLATE = {
NULL,
NULL, // store StringEnumeration pointer here
ustrenum_close,
ustrenum_count,
ustrenum_unext,
ustrenum_next,
ustrenum_reset
};
U_CDECL_END
/**
* Given a StringEnumeration, wrap it in a UEnumeration. The
* StringEnumeration is adopted; after this call, the caller must not
* delete it (regardless of error status).
*/
U_CAPI UEnumeration* U_EXPORT2
uenum_openStringEnumeration(StringEnumeration* adopted, UErrorCode* ec) {
UEnumeration* result = NULL;
if (U_SUCCESS(*ec) && adopted != NULL) {
result = (UEnumeration*) uprv_malloc(sizeof(UEnumeration));
if (result == NULL) {
*ec = U_MEMORY_ALLOCATION_ERROR;
} else {
uprv_memcpy(result, &TEMPLATE, sizeof(TEMPLATE));
result->context = adopted;
}
}
if (result == NULL) {
delete adopted;
}
return result;
}
//eof