/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include <osl/diagnose.h>
#include <osl/interlck.h>
#include <rtl/byteseq.h>
/* static data to be referenced by all empty strings
* the refCount is predefined to 1 and must never become 0 !
*/
static sal_Sequence aEmpty_rtl_ByteSeq =
{
1,
/* sal_Int32 refCount; */
0,
/* sal_Int32 length; */
{ 0 }
/* sal_Unicode buffer[1]; */
};
void SAL_CALL rtl_byte_sequence_reference2One(
sal_Sequence ** ppSequence ) noexcept
{
sal_Sequence * pSequence;
assert(ppSequence &&
"### null ptr!");
pSequence = *ppSequence;
if (pSequence->nRefCount > 1)
{
sal_Sequence *pNew;
sal_Int32 nElements = pSequence->nElements;
if (nElements)
{
pNew =
static_cast<sal_Sequence *>(malloc( SAL_SEQUENCE_HEADER_SIZE + nElements ));
if ( pNew != nullptr )
memcpy( pNew->elements, pSequence->elements, nElements );
if (! osl_atomic_decrement( &pSequence->nRefCount ))
free( pSequence );
}
else
{
#if defined __GNUC__ && !
defined __clang__ && __GNUC__ >= 14
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored
"-Walloc-size"
#endif
pNew =
static_cast<sal_Sequence *>(malloc( SAL_SEQUENCE_HEADER_SIZE ));
#if defined __GNUC__ && !
defined __clang__ && __GNUC__ >= 14
#pragma GCC diagnostic pop
#endif
}
if ( pNew != nullptr )
{
pNew->nRefCount = 1;
pNew->nElements = nElements;
}
*ppSequence = pNew;
}
}
void SAL_CALL rtl_byte_sequence_realloc(
sal_Sequence ** ppSequence, sal_Int32 nSize ) noexcept
{
sal_Sequence * pSequence;
sal_Int32 nElements;
assert(ppSequence &&
"### null ptr!");
pSequence = *ppSequence;
nElements = pSequence->nElements;
if (nElements == nSize)
return;
if (pSequence->nRefCount > 1)
// split
{
sal_Sequence *pNew =
static_cast<sal_Sequence *>(malloc( SAL_SEQUENCE_HEADER_SIZE + nSize
));
if ( pNew != nullptr )
{
if (nSize > nElements)
{
memcpy( pNew->elements, pSequence->elements, nElements );
memset( pNew->elements + nElements, 0, nSize - nElements );
}
else
{
memcpy( pNew->elements, pSequence->elements, nSize );
}
}
if (! osl_atomic_decrement( &pSequence->nRefCount ))
free( pSequence );
pSequence = pNew;
}
else
{
pSequence = static_cast<sal_Sequence *>(realloc(
pSequence, SAL_SEQUENCE_HEADER_SIZE + nSize ));
}
if ( pSequence != nullptr )
{
pSequence->nRefCount = 1;
pSequence->nElements = nSize;
}
*ppSequence = pSequence;
}
void SAL_CALL rtl_byte_sequence_acquire( sal_Sequence *pSequence ) noexcept
{
assert(pSequence);
osl_atomic_increment( &(pSequence->nRefCount) );
}
void SAL_CALL rtl_byte_sequence_release( sal_Sequence *pSequence ) noexcept
{
if ( pSequence != nullptr )
{
if (! osl_atomic_decrement( &(pSequence->nRefCount )) )
{
free( pSequence );
}
}
}
void SAL_CALL rtl_byte_sequence_construct( sal_Sequence **ppSequence , sal_Int32 nLength ) noexcept
{
assert(ppSequence);
if( *ppSequence )
{
rtl_byte_sequence_release( *ppSequence );
*ppSequence = nullptr;
}
if( nLength )
{
*ppSequence = static_cast<sal_Sequence *>(rtl_allocateZeroMemory( SAL_SEQUENCE_HEADER_SIZE + nLength ));
if ( *ppSequence != nullptr )
{
(*ppSequence)->nRefCount = 1;
(*ppSequence)->nElements = nLength;
}
}
else
{
*ppSequence = &aEmpty_rtl_ByteSeq;
rtl_byte_sequence_acquire( *ppSequence );
}
}
void SAL_CALL rtl_byte_sequence_constructNoDefault( sal_Sequence **ppSequence , sal_Int32 nLength ) noexcept
{
assert(ppSequence);
if( *ppSequence )
{
rtl_byte_sequence_release( *ppSequence );
*ppSequence = nullptr;
}
*ppSequence = static_cast<sal_Sequence *>(malloc( SAL_SEQUENCE_HEADER_SIZE + nLength ));
if ( *ppSequence != nullptr )
{
(*ppSequence)->nRefCount = 1;
(*ppSequence)->nElements = nLength;
}
}
void SAL_CALL rtl_byte_sequence_constructFromArray(
sal_Sequence **ppSequence, const sal_Int8 *pData , sal_Int32 nLength ) noexcept
{
rtl_byte_sequence_constructNoDefault( ppSequence , nLength );
if ( *ppSequence != nullptr && nLength != 0 )
memcpy( (*ppSequence)->elements, pData, nLength );
}
void SAL_CALL rtl_byte_sequence_assign( sal_Sequence **ppSequence , sal_Sequence *pSequence ) noexcept
{
if ( *ppSequence != pSequence)
{
if( *ppSequence )
{
rtl_byte_sequence_release( *ppSequence );
}
*ppSequence = pSequence;
rtl_byte_sequence_acquire( *ppSequence );
}
// else
// nothing to do
}
sal_Bool SAL_CALL rtl_byte_sequence_equals( sal_Sequence *pSequence1 , sal_Sequence *pSequence2 ) noexcept
{
assert(pSequence1 && pSequence2);
if (pSequence1 == pSequence2)
{
return true;
}
if (pSequence1->nElements != pSequence2->nElements)
{
return false;
}
return
memcmp(
pSequence1->elements, pSequence2->elements, pSequence1->nElements )
== 0;
}
const sal_Int8 *SAL_CALL rtl_byte_sequence_getConstArray( sal_Sequence *pSequence ) noexcept
{
return reinterpret_cast<sal_Int8*>(pSequence->elements);
}
sal_Int32 SAL_CALL rtl_byte_sequence_getLength( sal_Sequence *pSequence ) noexcept
{
return pSequence->nElements;
}
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