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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: tenchelp.c,v $
* $Revision: 1.6 $
*
* 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.
*
************************************************************************/
#include "tenchelp.h"
#include "unichars.h"
#include "rtl/textcvt.h"
#include "sal/types.h"
static sal_Bool ImplGetUndefinedAsciiMultiByte(sal_uInt32 nFlags,
sal_Char * pBuf,
sal_Size nMaxLen);
static sal_Bool ImplGetInvalidAsciiMultiByte(sal_uInt32 nFlags,
sal_Char * pBuf,
sal_Size nMaxLen);
static int ImplIsUnicodeIgnoreChar(sal_Unicode c, sal_uInt32 nFlags);
sal_Bool ImplGetUndefinedAsciiMultiByte(sal_uInt32 nFlags,
sal_Char * pBuf,
sal_Size nMaxLen)
{
if (nMaxLen == 0)
return sal_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 sal_True;
}
sal_Bool ImplGetInvalidAsciiMultiByte(sal_uInt32 nFlags,
sal_Char * pBuf,
sal_Size nMaxLen)
{
if (nMaxLen == 0)
return sal_False;
switch (nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_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 sal_True;
}
int 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));
}
/* ======================================================================= */
sal_Unicode ImplGetUndefinedUnicodeChar(sal_uChar cChar, sal_uInt32 nFlags)
{
return ((nFlags & RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_MASK)
== RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_MAPTOPRIVATE) ?
RTL_TEXTCVT_BYTE_PRIVATE_START + cChar :
RTL_TEXTENC_UNICODE_REPLACEMENT_CHARACTER;
}
/* ----------------------------------------------------------------------- */
sal_Bool
ImplHandleUndefinedUnicodeToTextChar(ImplTextConverterData const * pData,
sal_Unicode const ** ppSrcBuf,
sal_Unicode const * pEndSrcBuf,
sal_Char ** ppDestBuf,
sal_Char const * pEndDestBuf,
sal_uInt32 nFlags,
sal_uInt32 * pInfo)
{
sal_Unicode c = **ppSrcBuf;
(void) pData; /* unused */
/* 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 = (sal_Char)(sal_uChar)(c-RTL_TEXTCVT_BYTE_PRIVATE_START);
(*ppDestBuf)++;
(*ppSrcBuf)++;
return sal_True;
}
}
/* Should this character ignored (Private, Non Spacing, Control) */
if ( ImplIsUnicodeIgnoreChar( c, nFlags ) )
{
(*ppSrcBuf)++;
return sal_True;
}
/* Surrogates Characters should result in */
/* one replacement character */
if (ImplIsHighSurrogate(c))
{
if ( *ppSrcBuf == pEndSrcBuf )
{
*pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_SRCBUFFERTOSMALL;
return sal_False;
}
c = *((*ppSrcBuf)+1);
if (ImplIsLowSurrogate(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 sal_False;
}
else if ( (nFlags & RTL_UNICODETOTEXT_FLAGS_INVALID_MASK) == RTL_UNICODETOTEXT_FLAGS_INVALID_IGNORE )
{
(*ppSrcBuf)++;
return sal_True;
}
else if (ImplGetInvalidAsciiMultiByte(nFlags,
*ppDestBuf,
pEndDestBuf - *ppDestBuf))
{
++*ppSrcBuf;
++*ppDestBuf;
return sal_True;
}
else
{
*pInfo |= RTL_UNICODETOTEXT_INFO_ERROR
| RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
return sal_False;
}
}
}
*pInfo |= RTL_UNICODETOTEXT_INFO_UNDEFINED;
if ( (nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_MASK) == RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR )
{
*pInfo |= RTL_UNICODETOTEXT_INFO_ERROR;
return sal_False;
}
else 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 sal_False;
}
return sal_True;
}
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