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/* -*- 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/.
*/
#include <sal/config.h>
#include <rtl/character.hxx>
#include <rtl/textcvt.h>
#include <sal/types.h>
#include "handleundefinedunicodetotextchar.hxx"
#include "tenchelp.hxx"
namespace {
bool ImplIsUnicodeIgnoreChar(sal_Unicode c, sal_uInt32 nFlags)
{
return
((nFlags & RTL_UNICODETOTEXT_FLAGS_NONSPACING_IGNORE) != 0
&& ImplIsZeroWidth(c))
|| ((nFlags & RTL_UNICODETOTEXT_FLAGS_CONTROL_IGNORE) != 0
&& ImplIsControlOrFormat(c))
|| ((nFlags & RTL_UNICODETOTEXT_FLAGS_PRIVATE_IGNORE) != 0
&& ImplIsPrivateUse(c));
}
bool ImplGetUndefinedAsciiMultiByte(sal_uInt32 nFlags,
char * pBuf,
sal_Size nMaxLen)
{
if (nMaxLen == 0)
return false;
switch (nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_MASK)
{
case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_0:
*pBuf = 0x00;
break;
case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_QUESTIONMARK:
default: /* RTL_UNICODETOTEXT_FLAGS_UNDEFINED_DEFAULT */
*pBuf = 0x3F;
break;
case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_UNDERLINE:
*pBuf = 0x5F;
break;
}
return true;
}
bool ImplGetInvalidAsciiMultiByte(sal_uInt32 nFlags,
char * pBuf,
sal_Size nMaxLen)
{
if (nMaxLen == 0)
return false;
switch (nFlags & RTL_UNICODETOTEXT_FLAGS_INVALID_MASK)
{
case RTL_UNICODETOTEXT_FLAGS_INVALID_0:
*pBuf = 0x00;
break;
case RTL_UNICODETOTEXT_FLAGS_INVALID_QUESTIONMARK:
default: /* RTL_UNICODETOTEXT_FLAGS_INVALID_DEFAULT */
*pBuf = 0x3F;
break;
case RTL_UNICODETOTEXT_FLAGS_INVALID_UNDERLINE:
*pBuf = 0x5F;
break;
}
return true;
}
}
bool sal::detail::textenc::handleUndefinedUnicodeToTextChar(
sal_Unicode const ** ppSrcBuf, sal_Unicode const * pEndSrcBuf,
char ** ppDestBuf, char const * pEndDestBuf, sal_uInt32 nFlags,
sal_uInt32 * pInfo)
{
sal_Unicode c = **ppSrcBuf;
/* Should the private character map to one byte */
if ( (c >= RTL_TEXTCVT_BYTE_PRIVATE_START) && (c <= RTL_TEXTCVT_BYTE_PRIVATE_END) )
{
if ( nFlags & RTL_UNICODETOTEXT_FLAGS_PRIVATE_MAPTO0 )
{
**ppDestBuf = static_cast<char>(static_cast<unsigned char>(c-RTL_TEXTCVT_BYTE_PRIVATE_START));
(*ppDestBuf)++;
(*ppSrcBuf)++;
return true;
}
}
/* Should this character ignored (Private, Non Spacing, Control) */
if ( ImplIsUnicodeIgnoreChar( c, nFlags ) )
{
(*ppSrcBuf)++;
return true;
}
/* Surrogates Characters should result in */
/* one replacement character */
if (rtl::isHighSurrogate(c))
{
if ( ((*ppSrcBuf) + 1) == pEndSrcBuf )
{
*pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_SRCBUFFERTOSMALL;
return false;
}
c = *((*ppSrcBuf)+1);
if (rtl::isLowSurrogate(c))
(*ppSrcBuf)++;
else
{
*pInfo |= RTL_UNICODETOTEXT_INFO_INVALID;
if ( (nFlags & RTL_UNICODETOTEXT_FLAGS_INVALID_MASK) == RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR )
{
*pInfo |= RTL_UNICODETOTEXT_INFO_ERROR;
return false;
}
if ( (nFlags & RTL_UNICODETOTEXT_FLAGS_INVALID_MASK) == RTL_UNICODETOTEXT_FLAGS_INVALID_IGNORE )
{
(*ppSrcBuf)++;
return true;
}
if (ImplGetInvalidAsciiMultiByte(nFlags,
*ppDestBuf,
pEndDestBuf - *ppDestBuf))
{
++*ppSrcBuf;
++*ppDestBuf;
return true;
}
*pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
return false;
}
}
*pInfo |= RTL_UNICODETOTEXT_INFO_UNDEFINED;
if ( (nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_MASK) == RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR )
{
*pInfo |= RTL_UNICODETOTEXT_INFO_ERROR;
return false;
}
if ( (nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_MASK) == RTL_UNICODETOTEXT_FLAGS_UNDEFINED_IGNORE )
(*ppSrcBuf)++;
else if (ImplGetUndefinedAsciiMultiByte(nFlags,
*ppDestBuf,
pEndDestBuf - *ppDestBuf))
{
++*ppSrcBuf;
++*ppDestBuf;
}
else
{
*pInfo |= RTL_UNICODETOTEXT_INFO_ERROR
| RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
return false;
}
return true;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
