diff options
Diffstat (limited to 'sal/textenc/tenchelp.c')
| -rw-r--r-- | sal/textenc/tenchelp.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/sal/textenc/tenchelp.c b/sal/textenc/tenchelp.c new file mode 100644 index 000000000000..ed924336fa17 --- /dev/null +++ b/sal/textenc/tenchelp.c @@ -0,0 +1,215 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * 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. + * + ************************************************************************/ + +#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; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |