summaryrefslogtreecommitdiff
path: root/sal/inc/rtl/byteseq.h
diff options
context:
space:
mode:
Diffstat (limited to 'sal/inc/rtl/byteseq.h')
-rw-r--r--sal/inc/rtl/byteseq.h322
1 files changed, 322 insertions, 0 deletions
diff --git a/sal/inc/rtl/byteseq.h b/sal/inc/rtl/byteseq.h
new file mode 100644
index 000000000000..3c0b6862b70b
--- /dev/null
+++ b/sal/inc/rtl/byteseq.h
@@ -0,0 +1,322 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+#ifndef _RTL_BYTESEQ_H_
+#define _RTL_BYTESEQ_H_
+
+#include <sal/types.h>
+#include <rtl/alloc.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/** Assures that the reference count of the given byte sequence is one. Otherwise a new copy
+ of the sequence is created with a reference count of one.
+
+ @param ppSequence sequence
+*/
+void SAL_CALL rtl_byte_sequence_reference2One(
+ sal_Sequence ** ppSequence )
+ SAL_THROW_EXTERN_C();
+
+/** Reallocates length of byte sequence.
+
+ @param ppSequence sequence
+ @param nSize new size of sequence
+*/
+void SAL_CALL rtl_byte_sequence_realloc(
+ sal_Sequence ** ppSequence, sal_Int32 nSize )
+ SAL_THROW_EXTERN_C();
+
+/** Acquires the byte sequence
+
+ @param pSequence sequence, that is to be acquired
+*/
+void SAL_CALL rtl_byte_sequence_acquire(
+ sal_Sequence *pSequence )
+ SAL_THROW_EXTERN_C();
+
+/** Releases the byte sequence. If the refcount drops to zero, the sequence is freed.
+
+ @param pSequence sequence, that is to be released; invalid after call
+*/
+void SAL_CALL rtl_byte_sequence_release(
+ sal_Sequence *pSequence )
+ SAL_THROW_EXTERN_C();
+
+/** Constructs a bytes sequence with length nLength. All bytes are set to zero.
+
+ @param ppSequence inout sequence; on entry *ppSequence may be null, otherwise it is released;
+ after the call, *ppSequence contains the newly constructed sequence
+ @param nLength length of new sequence
+*/
+void SAL_CALL rtl_byte_sequence_construct(
+ sal_Sequence **ppSequence , sal_Int32 nLength )
+ SAL_THROW_EXTERN_C();
+
+/** Constructs a bytes sequence with length nLength. The data is not initialized.
+
+ @param ppSequence inout sequence; on entry *ppSequence may be null, otherwise it is released;
+ after the call, *ppSequence contains the newly constructed sequence
+ @param nLength length of new sequence
+*/
+void SAL_CALL rtl_byte_sequence_constructNoDefault(
+ sal_Sequence **ppSequence , sal_Int32 nLength )
+ SAL_THROW_EXTERN_C();
+
+/** Constructs a byte sequence with length nLength and copies nLength bytes from pData.
+
+ @param ppSequence inout sequence; on entry *ppSequence may be null, otherwise it is released;
+ after the call, *ppSequence contains the newly constructed sequence
+ @param pData initial data
+ @param nLength length of new sequence
+*/
+void SAL_CALL rtl_byte_sequence_constructFromArray(
+ sal_Sequence **ppSequence, const sal_Int8 *pData , sal_Int32 nLength )
+ SAL_THROW_EXTERN_C();
+
+/** Assigns the byte sequence pSequence to *ppSequence.
+
+ @param ppSequence inout sequence; on entry *ppSequence may be null, otherwise it is released;
+ after the call, *ppSequence references pSequence
+ @param pSequence the source sequence
+*/
+void SAL_CALL rtl_byte_sequence_assign(
+ sal_Sequence **ppSequence , sal_Sequence *pSequence )
+ SAL_THROW_EXTERN_C();
+
+/** Compares two byte sequences.
+
+ @return true, if the data within the sequences are identical; false otherwise
+*/
+sal_Bool SAL_CALL rtl_byte_sequence_equals(
+ sal_Sequence *pSequence1 , sal_Sequence *pSequence2 )
+ SAL_THROW_EXTERN_C();
+
+/** Returns the data array pointer of the sequence.
+
+ @return read-pointer to the data array of the sequence. If rtl_byte_sequence_reference2One()
+ has been called before, the pointer may be casted to a non const pointer and
+ the sequence may be modified
+*/
+const sal_Int8 *SAL_CALL rtl_byte_sequence_getConstArray(
+ sal_Sequence *pSequence )
+ SAL_THROW_EXTERN_C();
+
+/** Returns the length of the sequence
+
+ @param pSequence sequence handle
+ @return length of the sequence
+*/
+sal_Int32 SAL_CALL rtl_byte_sequence_getLength(
+ sal_Sequence *pSequence )
+ SAL_THROW_EXTERN_C();
+
+#ifdef __cplusplus
+}
+namespace rtl
+{
+
+enum __ByteSequence_NoDefault
+{
+ /** This enum value can be used to create a bytesequence with uninitalized data
+ */
+ BYTESEQ_NODEFAULT = 0xcafe
+};
+
+enum __ByteSequence_NoAcquire
+{
+ /** This enum value can be used to create a bytesequence from a C-Handle without
+ acquiring the handle.
+ */
+ BYTESEQ_NOACQUIRE = 0xcafebabe
+};
+
+/** C++ class representing a SAL byte sequence.
+ C++ Sequences are reference counted and shared, so the sequence keeps a handle to its data.
+ To keep value semantics, copies are only generated if the sequence is to be modified
+ (new handle).
+*/
+class ByteSequence
+{
+ /** sequence handle
+ @internal
+ */
+ sal_Sequence * _pSequence;
+
+public:
+ // these are here to force memory de/allocation to sal lib.
+ /** @internal */
+ inline static void * SAL_CALL operator new ( size_t nSize ) SAL_THROW( () )
+ { return ::rtl_allocateMemory( nSize ); }
+ /** @internal */
+ inline static void SAL_CALL operator delete ( void * pMem ) SAL_THROW( () )
+ { ::rtl_freeMemory( pMem ); }
+ /** @internal */
+ inline static void * SAL_CALL operator new ( size_t, void * pMem ) SAL_THROW( () )
+ { return pMem; }
+ /** @internal */
+ inline static void SAL_CALL operator delete ( void *, void * ) SAL_THROW( () )
+ {}
+
+ /** Default constructor: Creates an empty sequence.
+ */
+ inline ByteSequence() SAL_THROW( () );
+ /** Copy constructor: Creates a copy of given sequence.
+
+ @param rSeq another byte sequence
+ */
+ inline ByteSequence( const ByteSequence & rSeq ) SAL_THROW( () );
+ /** Copy constructor Creates a copy from the C-Handle.
+
+ @param pSequence another byte sequence handle
+ */
+ inline ByteSequence( sal_Sequence *pSequence ) SAL_THROW( () );
+ /** Constructor: Creates a copy of given data bytes.
+
+ @param pElements an array of bytes
+ @param len number of bytes
+ */
+ inline ByteSequence( const sal_Int8 * pElements, sal_Int32 len );
+ /** Constructor: Creates sequence of given length and initializes all bytes to 0.
+
+ @param len initial sequence length
+ */
+ inline ByteSequence( sal_Int32 len );
+ /** Constructor: Creates sequence of given length and does NOT initialize data.
+ Use this ctor for performance optimization only.
+
+ @param len initial sequence length
+ @param nodefault dummy parameter forcing explicit BYTESEQ_NODEFAULT
+ */
+ inline ByteSequence( sal_Int32 len , enum __ByteSequence_NoDefault nodefault );
+ /** Constructor:
+ Creates a sequence from a C-Handle without acquiring the handle, thus taking
+ over owenership. Eitherway the handle is release by the destructor.
+ This ctor is useful, when working with a c-interface (it safes a pair of
+ acquire and release call and is thus a performance optimization only).
+
+ @param pSequence sequence handle to be taken over
+ @param noacquire dummy parameter forcing explicit BYTESEQ_NOACQUIRE
+ */
+ inline ByteSequence( sal_Sequence *pSequence , enum __ByteSequence_NoAcquire noacquire ) SAL_THROW( () );
+ /** Destructor: Releases sequence handle. Last handle will free memory.
+ */
+ inline ~ByteSequence() SAL_THROW( () );
+
+ /** Assignment operator: Acquires given sequence handle and releases a previously set handle.
+
+ @param rSeq another byte sequence
+ @return this sequence
+ */
+ inline ByteSequence & SAL_CALL operator = ( const ByteSequence & rSeq ) SAL_THROW( () );
+
+ /** Gets the length of sequence.
+
+ @return length of sequence
+ */
+ inline sal_Int32 SAL_CALL getLength() const SAL_THROW( () )
+ { return _pSequence->nElements; }
+
+ /** Gets a pointer to byte array for READING. If the sequence has a length of 0, then the
+ returned pointer is undefined.
+
+ @return pointer to byte array
+ */
+ inline const sal_Int8 * SAL_CALL getConstArray() const SAL_THROW( () )
+ { return (const sal_Int8 *)_pSequence->elements; }
+ /** Gets a pointer to elements array for READING AND WRITING. In general if the sequence
+ has a handle acquired by other sequences (reference count > 1), then a new sequence is
+ created copying all bytes to keep value semantics!
+ If the sequence has a length of 0, then the returned pointer is undefined.
+
+ @return pointer to elements array
+ */
+ inline sal_Int8 * SAL_CALL getArray();
+
+ /** Non-const index operator:
+ Obtains a reference to byte indexed at given position.
+ In general if the sequence has a handle acquired by other
+ sequences (reference count > 1), then a new sequence is created
+ copying all bytes to keep value semantics!
+
+ @attention
+ The implementation does NOT check for array bounds!
+
+ @param nIndex index
+ @return non-const C++ reference to element at index nIndex
+ */
+ inline sal_Int8 & SAL_CALL operator [] ( sal_Int32 nIndex );
+
+ /** Const index operator: Obtains a reference to byte indexed at given position.
+ The implementation does NOT check for array bounds!
+
+ @param nIndex index
+ @return const C++ reference to byte at element of indenx nIndex
+ */
+ inline const sal_Int8 & SAL_CALL operator [] ( sal_Int32 nIndex ) const SAL_THROW( () )
+ { return getConstArray()[ nIndex ]; }
+
+ /** Equality operator: Compares two sequences.
+
+ @param rSeq another byte sequence (right side)
+ @return true if both sequences are equal, false otherwise
+ */
+ inline sal_Bool SAL_CALL operator == ( const ByteSequence & rSeq ) const SAL_THROW( () );
+ /** Unequality operator: Compares two sequences.
+
+ @param rSeq another byte sequence (right side)
+ @return false if both sequences are equal, true otherwise
+ */
+ inline sal_Bool SAL_CALL operator != ( const ByteSequence & rSeq ) const SAL_THROW( () );
+
+ /** Reallocates sequence to new length. If the sequence has a handle acquired by other sequences
+ (reference count > 1), then the remaining elements are copied to a new sequence handle to
+ keep value semantics!
+
+ @param nSize new size of sequence
+ */
+ inline void SAL_CALL realloc( sal_Int32 nSize );
+
+ /** Returns the UNnacquired C handle of the sequence
+
+ @return UNacquired handle of the sequence
+ */
+ inline sal_Sequence * SAL_CALL getHandle() const SAL_THROW( () )
+ { return _pSequence; }
+ /** Returns the UNnacquired C handle of the sequence (for compatibility reasons)
+
+ @return UNacquired handle of the sequence
+ */
+ inline sal_Sequence * SAL_CALL get() const SAL_THROW( () )
+ { return _pSequence; }
+};
+
+}
+#endif
+#endif