tools/source/reversemap/bestreversemap.cxx

   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
  10 #include <sal/config.h>
  11 #include <rtl/textcvt.h>
  12
  13 #include <stdio.h>
  14
  15 struct Encoder
  16 {
  17     rtl_UnicodeToTextConverter m_aConverter;
  18     bool m_bCapable;
  19     rtl_TextEncoding m_nEncoding;
  20     const char *m_pEncoding;
  21     Encoder(rtl_TextEncoding nEncoding, const char *pEncoding)
  22         : m_bCapable(true)
  23         , m_nEncoding(nEncoding)
  24         , m_pEncoding(pEncoding)
  25     {
  26         m_aConverter = rtl_createUnicodeToTextConverter(m_nEncoding);
  27     }
  28     ~Encoder()
  29     {
  30         rtl_destroyUnicodeToTextConverter(m_aConverter);
  31     }
  32     void checkSupports(sal_Unicode c)
  33     {
  34         sal_Char aTempArray[8];
  35         sal_Size nTempSize;
  36         sal_uInt32 nCvtInfo;
  37
  38         sal_Size nChars = rtl_convertUnicodeToText(m_aConverter,
  39             NULL, &c, 1, aTempArray, sizeof(aTempArray),
  40               RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR |  RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR,
  41              &nCvtInfo, &nTempSize);
  42         m_bCapable = nChars > 0;
  43     }
  44     void reset()
  45     {
  46         m_bCapable = true;
  47     }
  48     bool isOK() const
  49     {
  50         return m_bCapable;
  51     }
  52     const char* getName() const
  53     {
  54         return m_pEncoding;
  55     }
  56
  57 };
  58
  59 int main()
  60 {
  61 #   define EXP(x) Encoder(x, #x)
  62
  63     Encoder aConverters[15] =
  64     {
  65         EXP(RTL_TEXTENCODING_MS_1361),
  66         EXP(RTL_TEXTENCODING_MS_950),
  67         EXP(RTL_TEXTENCODING_MS_949),
  68         EXP(RTL_TEXTENCODING_MS_936),
  69         EXP(RTL_TEXTENCODING_MS_932),
  70         EXP(RTL_TEXTENCODING_MS_874),
  71         EXP(RTL_TEXTENCODING_MS_1258),
  72         EXP(RTL_TEXTENCODING_MS_1257),
  73         EXP(RTL_TEXTENCODING_MS_1256),
  74         EXP(RTL_TEXTENCODING_MS_1255),
  75         EXP(RTL_TEXTENCODING_MS_1254),
  76         EXP(RTL_TEXTENCODING_MS_1253),
  77         EXP(RTL_TEXTENCODING_MS_1251),
  78         EXP(RTL_TEXTENCODING_MS_1250),
  79         EXP(RTL_TEXTENCODING_MS_1252)
  80     };
  81
  82     printf("//Do not edit manually, generated from bestreversemap.cxx\n");
  83     printf("#include <rtl/textenc.h>\n");
  84     printf("#include <tools/tenccvt.hxx>\n");
  85     printf("rtl_TextEncoding getBestMSEncodingByChar(sal_Unicode c)\n");
  86     printf("{\n");
  87
  88     sal_Unicode c = 0;
  89     while (c < 0xFFFF)
  90     {
  91         for (size_t i = 0; i < SAL_N_ELEMENTS(aConverters); ++i)
  92             aConverters[i].reset();
  93
  94         int nMostCapable = -1;
  95
  96         while(c < 0xFFFF)
  97         {
  98             bool bSomethingCapable = false;
  99             for (size_t i = 0; i < SAL_N_ELEMENTS(aConverters); ++i)
 100             {
 101                 if (aConverters[i].isOK())
 102                     aConverters[i].checkSupports(c);
 103                 if (aConverters[i].isOK())
 104                 {
 105                     bSomethingCapable = true;
 106                     nMostCapable = i;
 107                 }
 108             }
 109             if (!bSomethingCapable)
 110                 break;
 111             ++c;
 112         }
 113         sal_Unicode cEnd = c;
 114         printf("    if (c < 0x%x)\n", c);
 115         printf("        return %s;\n", aConverters[nMostCapable].getName());
 116         while(c < 0xFFFF)
 117         {
 118             bool bNothingCapable = true;
 119             for (size_t i = 0; i < SAL_N_ELEMENTS(aConverters); ++i)
 120             {
 121                 aConverters[i].checkSupports(c);
 122                 if (aConverters[i].isOK())
 123                 {
 124                     bNothingCapable = false;
 125                     break;
 126                 }
 127             }
 128             if (!bNothingCapable)
 129                 break;
 130             ++c;
 131         }
 132         if (cEnd != c)
 133         {
 134             if (c < 0xFFFF)
 135             {
 136                 printf("    if (c < 0x%x)\n", c);
 137                 printf("        return RTL_TEXTENCODING_DONTKNOW;\n");
 138             }
 139             else
 140                 printf("    return RTL_TEXTENCODING_DONTKNOW;\n");
 141         }
 142     }
 143
 144     printf("}\n");
 145     fflush(stdout);
 146
 147     return EXIT_SUCCESS;
 148 }
 149
 150 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */