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Diffstat (limited to '')
| -rw-r--r-- | sal/rtl/byteseq.cxx | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/sal/rtl/byteseq.cxx b/sal/rtl/byteseq.cxx new file mode 100644 index 000000000..3c4967d54 --- /dev/null +++ b/sal/rtl/byteseq.cxx @@ -0,0 +1,246 @@ +/* -*- 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 ) SAL_THROW_EXTERN_C() +{ + sal_Sequence * pSequence; + + OSL_ENSURE( 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 + { + pNew = static_cast<sal_Sequence *>(malloc( SAL_SEQUENCE_HEADER_SIZE )); + } + + if ( pNew != nullptr ) + { + pNew->nRefCount = 1; + pNew->nElements = nElements; + } + + *ppSequence = pNew; + } +} + +void SAL_CALL rtl_byte_sequence_realloc( + sal_Sequence ** ppSequence, sal_Int32 nSize ) SAL_THROW_EXTERN_C() +{ + 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 ) + SAL_THROW_EXTERN_C() +{ + OSL_ASSERT( pSequence ); + osl_atomic_increment( &(pSequence->nRefCount) ); +} + +void SAL_CALL rtl_byte_sequence_release( sal_Sequence *pSequence ) + SAL_THROW_EXTERN_C() +{ + if ( pSequence != nullptr ) + { + if (! osl_atomic_decrement( &(pSequence->nRefCount )) ) + { + free( pSequence ); + } + } +} + +void SAL_CALL rtl_byte_sequence_construct( sal_Sequence **ppSequence , sal_Int32 nLength ) + SAL_THROW_EXTERN_C() +{ + OSL_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 ) + SAL_THROW_EXTERN_C() +{ + OSL_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 ) + SAL_THROW_EXTERN_C() +{ + 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 ) + SAL_THROW_EXTERN_C() +{ + 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 ) + SAL_THROW_EXTERN_C() +{ + 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 ) + SAL_THROW_EXTERN_C() +{ + return reinterpret_cast<sal_Int8*>(pSequence->elements); +} + +sal_Int32 SAL_CALL rtl_byte_sequence_getLength( sal_Sequence *pSequence ) + SAL_THROW_EXTERN_C() +{ + return pSequence->nElements; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |