LCOV - code coverage report
Current view: top level - usr/local/src/libreoffice/sal/textenc - convertsinglebytetobmpunicode.cxx (source / functions) Hit Total Coverage
Test: libreoffice_filtered.info Lines: 57 95 60.0 %
Date: 2013-07-09 Functions: 2 2 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #include "sal/config.h"
      21             : 
      22             : #include <cstddef>
      23             : 
      24             : #include "osl/diagnose.h"
      25             : #include "rtl/textcvt.h"
      26             : #include "sal/types.h"
      27             : 
      28             : #include "context.hxx"
      29             : #include "converter.hxx"
      30             : #include "convertsinglebytetobmpunicode.hxx"
      31             : #include "unichars.hxx"
      32             : 
      33         233 : sal_Size rtl_textenc_convertSingleByteToBmpUnicode(
      34             :     void const * data, SAL_UNUSED_PARAMETER void *, sal_Char const * srcBuf,
      35             :     sal_Size srcBytes, sal_Unicode * destBuf, sal_Size destChars,
      36             :     sal_uInt32 flags, sal_uInt32 * info, sal_Size * srcCvtBytes)
      37             : {
      38             :     sal_Unicode const * map = static_cast<
      39             :         rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
      40         233 :             data)->byteToUnicode;
      41         233 :     sal_uInt32 infoFlags = 0;
      42         233 :     sal_Size converted = 0;
      43         233 :     sal_Unicode * destBufPtr = destBuf;
      44         233 :     sal_Unicode * destBufEnd = destBuf + destChars;
      45         783 :     for (; converted < srcBytes; ++converted) {
      46         778 :         bool undefined = true;
      47         778 :         sal_Char b = *srcBuf++;
      48         778 :         sal_Unicode c = map[static_cast< sal_uInt8 >(b)];
      49         778 :         if (c == 0xFFFF) {
      50         228 :             goto bad_input;
      51             :         }
      52         550 :         if (destBufEnd - destBufPtr < 1) {
      53           0 :             goto no_output;
      54             :         }
      55         550 :         *destBufPtr++ = c;
      56         550 :         continue;
      57             :     bad_input:
      58         228 :         switch (sal::detail::textenc::handleBadInputTextToUnicodeConversion(
      59             :                     undefined, false, b, flags, &destBufPtr, destBufEnd,
      60         228 :                     &infoFlags))
      61             :         {
      62             :         case sal::detail::textenc::BAD_INPUT_STOP:
      63         228 :             break;
      64             : 
      65             :         case sal::detail::textenc::BAD_INPUT_CONTINUE:
      66           0 :             continue;
      67             : 
      68             :         case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
      69           0 :             goto no_output;
      70             :         }
      71         228 :         break;
      72             :     no_output:
      73           0 :         --srcBuf;
      74           0 :         infoFlags |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
      75           0 :         break;
      76             :     }
      77         233 :     if (info != 0) {
      78         233 :         *info = infoFlags;
      79             :     }
      80         233 :     if (srcCvtBytes != 0) {
      81         233 :         *srcCvtBytes = converted;
      82             :     }
      83         233 :     return destBufPtr - destBuf;
      84             : }
      85             : 
      86           7 : sal_Size rtl_textenc_convertBmpUnicodeToSingleByte(
      87             :     void const * data, void * context,
      88             :     sal_Unicode const * srcBuf, sal_Size srcChars, sal_Char * destBuf,
      89             :     sal_Size destBytes, sal_uInt32 flags, sal_uInt32 * info,
      90             :     sal_Size * srcCvtChars)
      91             : {
      92             :     std::size_t entries = static_cast<
      93             :         rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
      94           7 :             data)->unicodeToByteEntries;
      95             :     rtl::textenc::BmpUnicodeToSingleByteRange const * ranges = static_cast<
      96             :         rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
      97           7 :             data)->unicodeToByte;
      98           7 :     sal_Unicode highSurrogate = 0;
      99           7 :     sal_uInt32 infoFlags = 0;
     100           7 :     sal_Size converted = 0;
     101           7 :     sal_Char * destBufPtr = destBuf;
     102           7 :     sal_Char * destBufEnd = destBuf + destBytes;
     103           7 :     if (context != 0) {
     104             :         highSurrogate = static_cast< ImplUnicodeToTextContext * >(context)->
     105           7 :             m_nHighSurrogate;
     106             :     }
     107         567 :     for (; converted < srcChars; ++converted) {
     108         560 :         bool undefined = true;
     109         560 :         sal_uInt32 c = *srcBuf++;
     110         560 :         if (highSurrogate == 0) {
     111         560 :             if (ImplIsHighSurrogate(c)) {
     112           0 :                 highSurrogate = static_cast< sal_Unicode >(c);
     113           0 :                 continue;
     114             :             }
     115           0 :         } else if (ImplIsLowSurrogate(c)) {
     116           0 :             c = ImplCombineSurrogates(highSurrogate, c);
     117             :         } else {
     118           0 :             undefined = false;
     119           0 :             goto bad_input;
     120             :         }
     121         560 :         if (ImplIsLowSurrogate(c) || ImplIsNoncharacter(c)) {
     122           0 :             undefined = false;
     123           0 :             goto bad_input;
     124             :         }
     125             :         // Linearly searching through the ranges if probably fastest, assuming
     126             :         // that most converted characters belong to the ASCII subset:
     127       18980 :         for (std::size_t i = 0; i < entries; ++i) {
     128       18980 :             if (c < ranges[i].unicode) {
     129           0 :                 break;
     130       18980 :             } else if (c <= sal::static_int_cast< sal_uInt32 >(
     131       18980 :                            ranges[i].unicode + ranges[i].range))
     132             :             {
     133         560 :                 if (destBufEnd - destBufPtr < 1) {
     134           0 :                     goto no_output;
     135             :                 }
     136             :                 *destBufPtr++ = static_cast< sal_Char >(
     137         560 :                     ranges[i].byte + (c - ranges[i].unicode));
     138         560 :                 goto done;
     139             :             }
     140             :         }
     141           0 :         goto bad_input;
     142             :     done:
     143         560 :         highSurrogate = 0;
     144         560 :         continue;
     145             :     bad_input:
     146           0 :         switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
     147             :                     undefined, c, flags, &destBufPtr, destBufEnd, &infoFlags, 0,
     148           0 :                     0, 0))
     149             :         {
     150             :         case sal::detail::textenc::BAD_INPUT_STOP:
     151           0 :             highSurrogate = 0;
     152           0 :             break;
     153             : 
     154             :         case sal::detail::textenc::BAD_INPUT_CONTINUE:
     155           0 :             highSurrogate = 0;
     156           0 :             continue;
     157             : 
     158             :         case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
     159           0 :             goto no_output;
     160             :         }
     161           0 :         break;
     162             :     no_output:
     163           0 :         --srcBuf;
     164           0 :         infoFlags |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
     165           0 :         break;
     166             :     }
     167           7 :     if (highSurrogate != 0
     168           0 :         && ((infoFlags
     169           0 :              & (RTL_UNICODETOTEXT_INFO_ERROR
     170             :                 | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL))
     171             :             == 0))
     172             :     {
     173           0 :         if ((flags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0) {
     174           0 :             infoFlags |= RTL_UNICODETOTEXT_INFO_SRCBUFFERTOSMALL;
     175             :         } else {
     176           0 :             switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
     177             :                         false, 0, flags, &destBufPtr, destBufEnd, &infoFlags, 0,
     178           0 :                         0, 0))
     179             :             {
     180             :             case sal::detail::textenc::BAD_INPUT_STOP:
     181             :             case sal::detail::textenc::BAD_INPUT_CONTINUE:
     182           0 :                 highSurrogate = 0;
     183           0 :                 break;
     184             : 
     185             :             case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
     186           0 :                 infoFlags |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
     187           0 :                 break;
     188             :             }
     189             :         }
     190             :     }
     191           7 :     if (context != 0) {
     192             :         static_cast< ImplUnicodeToTextContext * >(context)->m_nHighSurrogate
     193           7 :             = highSurrogate;
     194             :     }
     195           7 :     if (info != 0) {
     196           7 :         *info = infoFlags;
     197             :     }
     198           7 :     if (srcCvtChars != 0) {
     199           7 :         *srcCvtChars = converted;
     200             :     }
     201           7 :     return destBufPtr - destBuf;
     202             : }
     203             : 
     204             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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