840b4eb2f3
See tdf#42949 for motivation Change-Id: I74a3c3a67c3639376e2251c3eb917fa4139dfbd0 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/127808 Tested-by: Jenkins Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
/* -*- 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 <buffer.hxx>
|
|
#include <basic/sberrors.hxx>
|
|
|
|
namespace
|
|
{
|
|
const sal_uInt32 UP_LIMIT=0xFFFFFF00;
|
|
|
|
template <class I, typename T> void write(I it, T n)
|
|
{
|
|
*it = static_cast<sal_uInt8>(n & 0xFF);
|
|
// coverity[stray_semicolon : FALSE] - coverity parse error
|
|
if constexpr (sizeof(n) > 1)
|
|
{
|
|
for (std::size_t i = 1; i < sizeof(n); ++i)
|
|
{
|
|
n >>= 8;
|
|
*++it = static_cast<sal_uInt8>(n & 0xFF);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename T> void SbiBuffer::append(T n)
|
|
{
|
|
if (m_aErrCode)
|
|
return;
|
|
if ((m_aBuf.size() + sizeof(n)) > UP_LIMIT)
|
|
{
|
|
m_aErrCode = ERRCODE_BASIC_PROG_TOO_LARGE;
|
|
m_aBuf.clear();
|
|
return;
|
|
}
|
|
m_aBuf.reserve(m_aBuf.size() + sizeof(n));
|
|
write(std::back_inserter(m_aBuf), n);
|
|
}
|
|
|
|
void SbiBuffer::operator+=(sal_Int8 n) { append(n); }
|
|
void SbiBuffer::operator+=(sal_Int16 n) { append(n); }
|
|
void SbiBuffer::operator+=(sal_uInt8 n) { append(n); }
|
|
void SbiBuffer::operator+=(sal_uInt16 n) { append(n); }
|
|
void SbiBuffer::operator+=(sal_uInt32 n) { append(n); }
|
|
void SbiBuffer::operator+=(sal_Int32 n) { append(n); }
|
|
|
|
// Patch of a Location
|
|
|
|
void SbiBuffer::Patch( sal_uInt32 off, sal_uInt32 val )
|
|
{
|
|
if (m_aErrCode)
|
|
return;
|
|
if ((off + sizeof(sal_uInt32)) <= GetSize())
|
|
write(m_aBuf.begin() + off, val);
|
|
}
|
|
|
|
// Forward References upon label and procedures
|
|
// establish a linkage. The beginning of the linkage is at the passed parameter,
|
|
// the end of the linkage is 0.
|
|
|
|
void SbiBuffer::Chain( sal_uInt32 off )
|
|
{
|
|
if (m_aErrCode)
|
|
return;
|
|
for (sal_uInt32 i = off; i;)
|
|
{
|
|
if ((i + sizeof(sal_uInt32)) > GetSize())
|
|
{
|
|
m_aErrCode = ERRCODE_BASIC_INTERNAL_ERROR;
|
|
m_sErrMsg = "BACKCHAIN";
|
|
break;
|
|
}
|
|
auto ip = m_aBuf.begin() + i;
|
|
i = ip[0] | (ip[1] << 8) | (ip[2] << 16) | (ip[3] << 24);
|
|
write(ip, GetSize());
|
|
}
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|