1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20 #include <ZipPackageBuffer.hxx>
21 #include <PackageConstants.hxx>
22 #include <string.h>
23 #include <sal/log.hxx>
24
25 #include <com/sun/star/io/BufferSizeExceededException.hpp>
26 #include <com/sun/star/lang/IllegalArgumentException.hpp>
27
28 using namespace ::com::sun::star;
29 using namespace com::sun::star::uno;
30 using namespace com::sun::star::io;
31 using com::sun::star::lang::IllegalArgumentException;
32
33 #if OSL_DEBUG_LEVEL > 0
34 #define THROW_WHERE SAL_WHERE
35 #else
36 #define THROW_WHERE ""
37 #endif
38
ZipPackageBuffer()39 ZipPackageBuffer::ZipPackageBuffer()
40 : m_nBufferSize (n_ConstBufferSize)
41 , m_nEnd(0)
42 , m_nCurrent(0)
43 , m_bMustInitBuffer ( true )
44 {
45 }
~ZipPackageBuffer()46 ZipPackageBuffer::~ZipPackageBuffer()
47 {
48 }
49
readBytes(Sequence<sal_Int8> & aData,sal_Int32 nBytesToRead)50 sal_Int32 SAL_CALL ZipPackageBuffer::readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
51 {
52 if (nBytesToRead < 0)
53 throw BufferSizeExceededException(THROW_WHERE, *this );
54
55 if (nBytesToRead + m_nCurrent > m_nEnd)
56 nBytesToRead = static_cast < sal_Int32 > (m_nEnd - m_nCurrent);
57
58 aData.realloc ( nBytesToRead );
59 memcpy(aData.getArray(), m_aBuffer.getConstArray() + m_nCurrent, nBytesToRead);
60 m_nCurrent +=nBytesToRead;
61 return nBytesToRead;
62 }
63
readSomeBytes(Sequence<sal_Int8> & aData,sal_Int32 nMaxBytesToRead)64 sal_Int32 SAL_CALL ZipPackageBuffer::readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
65 {
66 return readBytes(aData, nMaxBytesToRead);
67 }
skipBytes(sal_Int32 nBytesToSkip)68 void SAL_CALL ZipPackageBuffer::skipBytes( sal_Int32 nBytesToSkip )
69 {
70 if (nBytesToSkip < 0)
71 throw BufferSizeExceededException(THROW_WHERE, *this );
72
73 if (nBytesToSkip + m_nCurrent > m_nEnd)
74 nBytesToSkip = static_cast < sal_Int32 > (m_nEnd - m_nCurrent);
75
76 m_nCurrent+=nBytesToSkip;
77 }
available()78 sal_Int32 SAL_CALL ZipPackageBuffer::available( )
79 {
80 return std::min<sal_Int64>(SAL_MAX_INT32, m_nEnd - m_nCurrent);
81 }
closeInput()82 void SAL_CALL ZipPackageBuffer::closeInput( )
83 {
84 }
writeBytes(const Sequence<sal_Int8> & aData)85 void SAL_CALL ZipPackageBuffer::writeBytes( const Sequence< sal_Int8 >& aData )
86 {
87 sal_Int64 nDataLen = aData.getLength(), nCombined = m_nEnd + nDataLen;
88
89 if ( nCombined > m_nBufferSize)
90 {
91 do
92 m_nBufferSize *=2;
93 while (nCombined > m_nBufferSize);
94 m_aBuffer.realloc(static_cast < sal_Int32 > (m_nBufferSize));
95 m_bMustInitBuffer = false;
96 }
97 else if (m_bMustInitBuffer)
98 {
99 m_aBuffer.realloc ( static_cast < sal_Int32 > ( m_nBufferSize ) );
100 m_bMustInitBuffer = false;
101 }
102 memcpy( m_aBuffer.getArray() + m_nCurrent, aData.getConstArray(), static_cast < sal_Int32 > (nDataLen));
103 m_nCurrent+=nDataLen;
104 if (m_nCurrent>m_nEnd)
105 m_nEnd = m_nCurrent;
106 }
flush()107 void SAL_CALL ZipPackageBuffer::flush( )
108 {
109 }
closeOutput()110 void SAL_CALL ZipPackageBuffer::closeOutput( )
111 {
112 }
seek(sal_Int64 location)113 void SAL_CALL ZipPackageBuffer::seek( sal_Int64 location )
114 {
115 if ( location > m_nEnd || location < 0 )
116 throw IllegalArgumentException(THROW_WHERE, uno::Reference< uno::XInterface >(), 1 );
117 m_nCurrent = location;
118 }
getPosition()119 sal_Int64 SAL_CALL ZipPackageBuffer::getPosition( )
120 {
121 return m_nCurrent;
122 }
getLength()123 sal_Int64 SAL_CALL ZipPackageBuffer::getLength( )
124 {
125 return m_nEnd;
126 }
127
128 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
129