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// © 2016 and later: Unicode, Inc. and others. 
// License & terms of use: http://www.unicode.org/copyright.html 
/* 
***************************************************************************************** 
* Copyright (C) 2015, International Business Machines 
* Corporation and others. All Rights Reserved. 
***************************************************************************************** 
*/ 
 
#include "unicode/utypes.h" 
 
#if !UCONFIG_NO_FORMATTING 
 
#include "unicode/ulistformatter.h" 
#include "unicode/listformatter.h" 
#include "unicode/localpointer.h" 
#include "cmemory.h" 
#include "formattedval_impl.h" 
 
U_NAMESPACE_USE 
 
U_CAPI UListFormatter* U_EXPORT2 
ulistfmt_open(const char*  locale, 
              UErrorCode*  status) 
{ 
    if (U_FAILURE(*status)) { 
        return NULL; 
    } 
    LocalPointer<ListFormatter> listfmt(ListFormatter::createInstance(Locale(locale), *status)); 
    if (U_FAILURE(*status)) { 
        return NULL; 
    } 
    return (UListFormatter*)listfmt.orphan(); 
} 
 
 
U_CAPI UListFormatter* U_EXPORT2 
ulistfmt_openForType(const char*  locale, UListFormatterType type, 
                    UListFormatterWidth width, UErrorCode* status) 
{ 
    if (U_FAILURE(*status)) { 
        return NULL; 
    } 
    LocalPointer<ListFormatter> listfmt(ListFormatter::createInstance(Locale(locale), type, width, *status)); 
    if (U_FAILURE(*status)) { 
        return NULL; 
    } 
    return (UListFormatter*)listfmt.orphan(); 
} 
 
 
U_CAPI void U_EXPORT2 
ulistfmt_close(UListFormatter *listfmt) 
{ 
    delete (ListFormatter*)listfmt; 
} 
 
 
// Magic number: FLST in ASCII 
UPRV_FORMATTED_VALUE_CAPI_AUTO_IMPL( 
    FormattedList, 
    UFormattedList, 
    UFormattedListImpl, 
    UFormattedListApiHelper, 
    ulistfmt, 
    0x464C5354) 
 
 
static UnicodeString* getUnicodeStrings( 
        const UChar* const strings[], 
        const int32_t* stringLengths, 
        int32_t stringCount, 
        UnicodeString* length4StackBuffer, 
        LocalArray<UnicodeString>& maybeOwner, 
        UErrorCode& status) { 
    U_ASSERT(U_SUCCESS(status)); 
    if (stringCount < 0 || (strings == NULL && stringCount > 0)) { 
        status = U_ILLEGAL_ARGUMENT_ERROR; 
        return nullptr; 
    } 
    UnicodeString* ustrings = length4StackBuffer; 
    if (stringCount > 4) { 
        maybeOwner.adoptInsteadAndCheckErrorCode(new UnicodeString[stringCount], status); 
        if (U_FAILURE(status)) { 
            return nullptr; 
        } 
        ustrings = maybeOwner.getAlias(); 
    } 
    if (stringLengths == NULL) { 
        for (int32_t stringIndex = 0; stringIndex < stringCount; stringIndex++) { 
            ustrings[stringIndex].setTo(TRUE, strings[stringIndex], -1); 
        } 
    } else { 
        for (int32_t stringIndex = 0; stringIndex < stringCount; stringIndex++) { 
            ustrings[stringIndex].setTo(stringLengths[stringIndex] < 0, strings[stringIndex], stringLengths[stringIndex]); 
        } 
    } 
    return ustrings; 
} 
 
 
U_CAPI int32_t U_EXPORT2 
ulistfmt_format(const UListFormatter* listfmt, 
                const UChar* const strings[], 
                const int32_t *    stringLengths, 
                int32_t            stringCount, 
                UChar*             result, 
                int32_t            resultCapacity, 
                UErrorCode*        status) 
{ 
    if (U_FAILURE(*status)) { 
        return -1; 
    } 
    if ((result == NULL) ? resultCapacity != 0 : resultCapacity < 0) { 
        *status = U_ILLEGAL_ARGUMENT_ERROR; 
        return -1; 
    } 
    UnicodeString length4StackBuffer[4]; 
    LocalArray<UnicodeString> maybeOwner; 
    UnicodeString* ustrings = getUnicodeStrings( 
        strings, stringLengths, stringCount, length4StackBuffer, maybeOwner, *status); 
    if (U_FAILURE(*status)) { 
        return -1; 
    } 
    UnicodeString res; 
    if (result != NULL) { 
        // NULL destination for pure preflighting: empty dummy string 
        // otherwise, alias the destination buffer (copied from udat_format) 
        res.setTo(result, 0, resultCapacity); 
    } 
    reinterpret_cast<const ListFormatter*>(listfmt)->format( ustrings, stringCount, res, *status ); 
    return res.extract(result, resultCapacity, *status); 
} 
 
 
U_CAPI void U_EXPORT2 
ulistfmt_formatStringsToResult( 
                const UListFormatter* listfmt, 
                const UChar* const strings[], 
                const int32_t *    stringLengths, 
                int32_t            stringCount, 
                UFormattedList*    uresult, 
                UErrorCode*        status) { 
    auto* result = UFormattedListApiHelper::validate(uresult, *status); 
    if (U_FAILURE(*status)) { 
        return; 
    } 
    UnicodeString length4StackBuffer[4]; 
    LocalArray<UnicodeString> maybeOwner; 
    UnicodeString* ustrings = getUnicodeStrings( 
        strings, stringLengths, stringCount, length4StackBuffer, maybeOwner, *status); 
    if (U_FAILURE(*status)) { 
        return; 
    } 
    result->fImpl = reinterpret_cast<const ListFormatter*>(listfmt) 
        ->formatStringsToValue(ustrings, stringCount, *status); 
} 
 
 
#endif /* #if !UCONFIG_NO_FORMATTING */