564 lines
18 KiB
C++
564 lines
18 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "sal/config.h"
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#include "rtl/textcvt.h"
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#include "sal/types.h"
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#include "context.hxx"
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#include "converter.hxx"
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#include "convertiso2022jp.hxx"
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#include "tenchelp.hxx"
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#include "unichars.hxx"
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namespace {
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enum ImplIso2022JpToUnicodeState // order is important:
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{
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IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII,
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IMPL_ISO_2022_JP_TO_UNICODE_STATE_JIS_ROMAN,
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IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208,
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IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208_2,
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IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC,
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IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_LPAREN,
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IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_DOLLAR
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};
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struct ImplIso2022JpToUnicodeContext
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{
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ImplIso2022JpToUnicodeState m_eState;
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sal_uInt32 m_nRow;
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};
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struct ImplUnicodeToIso2022JpContext
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{
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sal_Unicode m_nHighSurrogate;
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bool m_b0208;
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};
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}
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void * ImplCreateIso2022JpToUnicodeContext()
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{
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ImplIso2022JpToUnicodeContext * pContext =
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new ImplIso2022JpToUnicodeContext;
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pContext->m_eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
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return pContext;
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}
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void ImplResetIso2022JpToUnicodeContext(void * pContext)
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{
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if (pContext)
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static_cast< ImplIso2022JpToUnicodeContext * >(pContext)->m_eState
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= IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
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}
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void ImplDestroyIso2022JpToUnicodeContext(void * pContext)
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{
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delete static_cast< ImplIso2022JpToUnicodeContext * >(pContext);
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}
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sal_Size ImplConvertIso2022JpToUnicode(void const * pData,
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void * pContext,
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char const * pSrcBuf,
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sal_Size nSrcBytes,
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sal_Unicode * pDestBuf,
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sal_Size nDestChars,
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sal_uInt32 nFlags,
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sal_uInt32 * pInfo,
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sal_Size * pSrcCvtBytes)
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{
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ImplDBCSToUniLeadTab const * pJisX0208Data
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= static_cast< ImplIso2022JpConverterData const * >(pData)->
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m_pJisX0208ToUnicodeData;
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ImplIso2022JpToUnicodeState eState
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= IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
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sal_uInt32 nRow = 0;
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sal_uInt32 nInfo = 0;
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sal_Size nConverted = 0;
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sal_Unicode * pDestBufPtr = pDestBuf;
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sal_Unicode * pDestBufEnd = pDestBuf + nDestChars;
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if (pContext)
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{
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eState = static_cast< ImplIso2022JpToUnicodeContext * >(pContext)->m_eState;
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nRow = static_cast< ImplIso2022JpToUnicodeContext * >(pContext)->m_nRow;
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}
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for (; nConverted < nSrcBytes; ++nConverted)
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{
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bool bUndefined = true;
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sal_uInt32 nChar = *(unsigned char const *) pSrcBuf++;
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switch (eState)
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{
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case IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII:
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if (nChar == 0x1B) // ESC
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC;
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else if (nChar < 0x80)
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if (pDestBufPtr != pDestBufEnd)
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*pDestBufPtr++ = (sal_Unicode) nChar;
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else
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goto no_output;
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else
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{
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bUndefined = false;
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goto bad_input;
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}
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break;
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case IMPL_ISO_2022_JP_TO_UNICODE_STATE_JIS_ROMAN:
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if (nChar == 0x1B) // ESC
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC;
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else if (nChar < 0x80)
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if (pDestBufPtr != pDestBufEnd)
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{
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switch (nChar)
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{
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case 0x5C: // REVERSE SOLIDUS (\)
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nChar = 0xA5; // YEN SIGN
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break;
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case 0x7E: // ~
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nChar = 0xAF; // MACRON
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break;
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}
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*pDestBufPtr++ = (sal_Unicode) nChar;
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}
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else
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goto no_output;
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else
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{
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bUndefined = false;
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goto bad_input;
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}
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break;
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case IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208:
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if (nChar == 0x1B) // ESC
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC;
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else if (nChar >= 0x21 && nChar <= 0x7E)
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{
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nRow = nChar;
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208_2;
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}
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else
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{
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bUndefined = false;
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goto bad_input;
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}
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break;
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case IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208_2:
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if (nChar >= 0x21 && nChar <= 0x7E)
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{
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sal_uInt16 nUnicode = 0;
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sal_uInt32 nFirst = pJisX0208Data[nRow].mnTrailStart;
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if (nChar >= nFirst
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&& nChar <= pJisX0208Data[nRow].mnTrailEnd)
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nUnicode = pJisX0208Data[nRow].
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mpToUniTrailTab[nChar - nFirst];
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if (nUnicode != 0)
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if (pDestBufPtr != pDestBufEnd)
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{
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*pDestBufPtr++ = (sal_Unicode) nUnicode;
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208;
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}
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else
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goto no_output;
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else
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goto bad_input;
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}
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else
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{
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bUndefined = false;
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goto bad_input;
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}
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break;
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case IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC:
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switch (nChar)
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{
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case 0x24: // $
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_DOLLAR;
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break;
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case 0x28: // (
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_LPAREN;
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break;
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default:
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bUndefined = false;
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goto bad_input;
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}
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break;
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case IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_LPAREN:
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switch (nChar)
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{
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case 0x42: // A
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
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break;
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case 0x4A: // J
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_JIS_ROMAN;
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break;
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default:
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bUndefined = false;
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goto bad_input;
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}
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break;
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case IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_DOLLAR:
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switch (nChar)
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{
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case 0x40: // @
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case 0x42: // B
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208;
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break;
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default:
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bUndefined = false;
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goto bad_input;
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}
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break;
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}
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continue;
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bad_input:
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switch (sal::detail::textenc::handleBadInputTextToUnicodeConversion(
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bUndefined, true, 0, nFlags, &pDestBufPtr, pDestBufEnd,
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&nInfo))
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{
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case sal::detail::textenc::BAD_INPUT_STOP:
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
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break;
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case sal::detail::textenc::BAD_INPUT_CONTINUE:
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
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continue;
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case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
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goto no_output;
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}
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break;
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no_output:
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--pSrcBuf;
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nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
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break;
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}
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if (eState > IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208
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&& (nInfo & (RTL_TEXTTOUNICODE_INFO_ERROR
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| RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL))
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== 0)
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{
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if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0)
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nInfo |= RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOSMALL;
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else
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switch (sal::detail::textenc::handleBadInputTextToUnicodeConversion(
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false, true, 0, nFlags, &pDestBufPtr, pDestBufEnd,
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&nInfo))
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{
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case sal::detail::textenc::BAD_INPUT_STOP:
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case sal::detail::textenc::BAD_INPUT_CONTINUE:
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eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
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break;
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case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
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nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
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break;
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}
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}
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if (pContext)
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{
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static_cast< ImplIso2022JpToUnicodeContext * >(pContext)->m_eState = eState;
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static_cast< ImplIso2022JpToUnicodeContext * >(pContext)->m_nRow = nRow;
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}
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if (pInfo)
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*pInfo = nInfo;
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if (pSrcCvtBytes)
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*pSrcCvtBytes = nConverted;
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return pDestBufPtr - pDestBuf;
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}
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void * ImplCreateUnicodeToIso2022JpContext()
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{
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ImplUnicodeToIso2022JpContext * pContext =
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new ImplUnicodeToIso2022JpContext;
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pContext->m_nHighSurrogate = 0;
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pContext->m_b0208 = false;
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return pContext;
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}
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void ImplResetUnicodeToIso2022JpContext(void * pContext)
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{
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if (pContext)
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{
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static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_nHighSurrogate = 0;
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static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_b0208 = false;
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}
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}
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void ImplDestroyUnicodeToIso2022JpContext(void * pContext)
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{
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delete static_cast< ImplUnicodeToIso2022JpContext * >(pContext);
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}
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sal_Size ImplConvertUnicodeToIso2022Jp(void const * pData,
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void * pContext,
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sal_Unicode const * pSrcBuf,
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sal_Size nSrcChars,
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char * pDestBuf,
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sal_Size nDestBytes,
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sal_uInt32 nFlags,
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sal_uInt32 * pInfo,
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sal_Size * pSrcCvtChars)
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{
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ImplUniToDBCSHighTab const * pJisX0208Data
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= static_cast< ImplIso2022JpConverterData const * >(pData)->
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m_pUnicodeToJisX0208Data;
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sal_Unicode nHighSurrogate = 0;
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bool b0208 = false;
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sal_uInt32 nInfo = 0;
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sal_Size nConverted = 0;
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char * pDestBufPtr = pDestBuf;
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char * pDestBufEnd = pDestBuf + nDestBytes;
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bool bWritten;
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if (pContext)
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{
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nHighSurrogate
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= static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_nHighSurrogate;
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b0208 = static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_b0208;
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}
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for (; nConverted < nSrcChars; ++nConverted)
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{
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bool bUndefined = true;
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sal_uInt32 nChar = *pSrcBuf++;
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if (nHighSurrogate == 0)
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{
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if (ImplIsHighSurrogate(nChar))
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{
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nHighSurrogate = (sal_Unicode) nChar;
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continue;
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}
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}
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else if (ImplIsLowSurrogate(nChar))
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nChar = ImplCombineSurrogates(nHighSurrogate, nChar);
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else
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{
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bUndefined = false;
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goto bad_input;
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}
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if (ImplIsLowSurrogate(nChar) || ImplIsNoncharacter(nChar))
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{
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bUndefined = false;
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goto bad_input;
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}
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if (nChar == 0x0A || nChar == 0x0D) // LF, CR
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{
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if (b0208)
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{
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if (pDestBufEnd - pDestBufPtr >= 3)
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{
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*pDestBufPtr++ = 0x1B; // ESC
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*pDestBufPtr++ = 0x28; // (
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*pDestBufPtr++ = 0x42; // B
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b0208 = false;
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}
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else
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goto no_output;
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}
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if (pDestBufPtr != pDestBufEnd)
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*pDestBufPtr++ = static_cast< char >(nChar);
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else
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goto no_output;
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}
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else if (nChar == 0x1B)
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goto bad_input;
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else if (nChar < 0x80)
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{
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if (b0208)
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{
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if (pDestBufEnd - pDestBufPtr >= 3)
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{
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*pDestBufPtr++ = 0x1B; // ESC
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*pDestBufPtr++ = 0x28; // (
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*pDestBufPtr++ = 0x42; // B
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b0208 = false;
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}
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else
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goto no_output;
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}
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if (pDestBufPtr != pDestBufEnd)
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*pDestBufPtr++ = static_cast< char >(nChar);
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else
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goto no_output;
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}
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else
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{
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sal_uInt16 nBytes = 0;
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sal_uInt32 nIndex1 = nChar >> 8;
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if (nIndex1 < 0x100)
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{
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sal_uInt32 nIndex2 = nChar & 0xFF;
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sal_uInt32 nFirst = pJisX0208Data[nIndex1].mnLowStart;
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if (nIndex2 >= nFirst
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&& nIndex2 <= pJisX0208Data[nIndex1].mnLowEnd)
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{
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nBytes = pJisX0208Data[nIndex1].
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mpToUniTrailTab[nIndex2 - nFirst];
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if (nBytes == 0)
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// For some reason, the tables in tcvtjp4.tab do not
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// include these two conversions:
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switch (nChar)
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{
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case 0xA5: // YEN SIGN
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nBytes = 0x216F;
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break;
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case 0xAF: // MACRON
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nBytes = 0x2131;
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break;
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}
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}
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}
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if (nBytes != 0)
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{
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if (!b0208)
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{
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if (pDestBufEnd - pDestBufPtr >= 3)
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{
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*pDestBufPtr++ = 0x1B; // ESC
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*pDestBufPtr++ = 0x24; // $
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*pDestBufPtr++ = 0x42; // B
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b0208 = true;
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}
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else
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goto no_output;
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}
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if (pDestBufEnd - pDestBufPtr >= 2)
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{
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*pDestBufPtr++ = static_cast< char >(nBytes >> 8);
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*pDestBufPtr++ = static_cast< char >(nBytes & 0xFF);
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}
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else
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goto no_output;
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}
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else
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goto bad_input;
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}
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nHighSurrogate = 0;
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continue;
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bad_input:
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switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
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bUndefined, nChar, nFlags, &pDestBufPtr, pDestBufEnd,
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&nInfo, "\x1B(B", b0208 ? 3 : 0, &bWritten))
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{
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case sal::detail::textenc::BAD_INPUT_STOP:
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nHighSurrogate = 0;
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break;
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case sal::detail::textenc::BAD_INPUT_CONTINUE:
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if (bWritten)
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b0208 = false;
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nHighSurrogate = 0;
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continue;
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case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
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goto no_output;
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}
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break;
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no_output:
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--pSrcBuf;
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nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
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break;
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}
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if ((nInfo & (RTL_UNICODETOTEXT_INFO_ERROR
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| RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL))
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== 0)
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{
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bool bFlush = true;
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if (nHighSurrogate != 0)
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{
|
|
if ((nFlags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0)
|
|
nInfo |= RTL_UNICODETOTEXT_INFO_SRCBUFFERTOSMALL;
|
|
else
|
|
switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
|
|
false, 0, nFlags, &pDestBufPtr, pDestBufEnd, &nInfo,
|
|
"\x1B(B", b0208 ? 3 : 0, &bWritten))
|
|
{
|
|
case sal::detail::textenc::BAD_INPUT_STOP:
|
|
nHighSurrogate = 0;
|
|
bFlush = false;
|
|
break;
|
|
|
|
case sal::detail::textenc::BAD_INPUT_CONTINUE:
|
|
if (bWritten)
|
|
b0208 = false;
|
|
nHighSurrogate = 0;
|
|
break;
|
|
|
|
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
|
|
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
|
|
break;
|
|
}
|
|
}
|
|
if (bFlush
|
|
&& b0208
|
|
&& (nFlags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0)
|
|
{
|
|
if (pDestBufEnd - pDestBufPtr >= 3)
|
|
{
|
|
*pDestBufPtr++ = 0x1B; // ESC
|
|
*pDestBufPtr++ = 0x28; // (
|
|
*pDestBufPtr++ = 0x42; // B
|
|
b0208 = false;
|
|
}
|
|
else
|
|
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
|
|
}
|
|
}
|
|
|
|
if (pContext)
|
|
{
|
|
static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_nHighSurrogate
|
|
= nHighSurrogate;
|
|
static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_b0208 = b0208;
|
|
}
|
|
if (pInfo)
|
|
*pInfo = nInfo;
|
|
if (pSrcCvtChars)
|
|
*pSrcCvtChars = nConverted;
|
|
|
|
return pDestBufPtr - pDestBuf;
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|