i18npool/source/inputchecker/inputsequencechecker_hi.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  * 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
  21 #include <inputsequencechecker_hi.hxx>
  22
  23 using ::rtl::OUString;
  24
  25 namespace com {
  26 namespace sun {
  27 namespace star {
  28 namespace i18n {
  29
  30 InputSequenceChecker_hi::InputSequenceChecker_hi()
  31 {
  32     serviceName = "com.sun.star.i18n.InputSequenceChecker_hi";
  33 }
  34
  35 InputSequenceChecker_hi::~InputSequenceChecker_hi()
  36 {
  37 }
  38 /* Non-Defined Class type */
  39 #define __ND        0
  40
  41 /*
  42  * Devanagari character type definitions
  43  */
  44 #define __UP  1  // ChandraBindu & Anuswar
  45 #define __NP  2  // Visarg
  46 #define __IV    3  // Independant Vowels
  47 #define __CN    4  // Consonants except _CK & _RC
  48 #define __CK    5  // Consonants that can be followed by Nukta
  49 #define __RC    6  // Ra
  50 #define __NM    7  // Matra
  51 #define __RM    8  // Ra + HAL
  52 #define __IM    9  // Choti I Matra
  53 #define __HL    10 // HAL
  54 #define __NK    11 // Nukta
  55 #define __VD    12 // Vedic
  56 #define __HD    13 // Hindu Numerals
  57
  58 /*
  59  * Devanagari character type table
  60  */
  61 static const sal_uInt16 devaCT[128] = {
  62 /*         0,    1,    2,    3,    4,    5,    6,    7,
  63            8,    9,    A,    B,    C,    D,    E,    F, */
  64 /* 0900 */ __ND, __UP, __UP, __NP, __ND, __IV, __IV, __IV,
  65            __IV, __IV, __IV, __IV, __IV, __IV, __IV, __IV,
  66 /* 0910 */ __IV, __IV, __IV, __IV, __IV, __CK, __CK, __CK,
  67            __CN, __CN, __CN, __CN, __CK, __CN, __CN, __CN,
  68 /* 0920 */ __CN, __CK, __CK, __CN, __CN, __CN, __CN, __CN,
  69            __CN, __CN, __CN, __CK, __CN, __CN, __CN, __CN,
  70 /* 0930 */ __RC, __CN, __CN, __CN, __CN, __CN, __CN, __CN,
  71            __CN, __CN, __ND, __ND, __NK, __VD, __NM, __IM,
  72 /* 0940 */ __RM, __NM, __NM, __NM, __NM, __RM, __RM, __RM,
  73            __RM, __RM, __RM, __RM, __RM, __HL, __ND, __ND,
  74 /* 0950 */ __ND, __VD, __VD, __VD, __VD, __ND, __ND, __ND,
  75            __CN, __CN, __CN, __CN, __CN, __CN, __CN, __CN,
  76 /* 0960 */ __IV, __IV, __NM, __NM, __ND, __ND, __HD, __HD,
  77            __HD, __HD, __HD, __HD, __HD, __HD, __HD, __HD,
  78 /* 0970 */ __ND, __ND, __ND, __ND, __ND, __ND, __ND, __ND,
  79            __ND, __ND, __ND, __ND, __ND, __ND, __ND, __ND,
  80 };
  81
  82 /*
  83  * Devanagari character composition table
  84  */
  85 static const sal_uInt16 dev_cell_check[14][14] = {
  86   /*        ND, UP, NP, IV, CN, CK, RC, NM, RM, IM, HL, NK, VD, HD, */
  87   /* 0  */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* ND */
  88   /* 1  */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* UP */
  89   /* 2  */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* NP */
  90   /* 3  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* IV */
  91   /* 4  */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  0,  0,  0 }, /* CN */
  92   /* 5  */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  1,  0,  0 }, /* CK */
  93   /* 6  */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  0,  0,  0 }, /* RC */
  94   /* 7  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* NM */
  95   /* 8  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* RM */
  96   /* 9  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* IM */
  97   /* 10 */ { 0,  0,  0,  0,  1,  1,  1,  0,  0,  0,  0,  0,  0,  0 }, /* HL */
  98   /* 11 */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  0,  0,  0 }, /* NK */
  99   /* 12 */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* VD */
 100   /* 13 */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }  /* HD */
 101 };
 102
 103 sal_Bool _DEV_Composible[2][2] = {
 104 /* Mode 0 */    {sal_True, sal_True }, // PASSTHROUGH = 0
 105 /* Mode 1 */    {sal_False, sal_True}  // STRICT = 1
 106 };
 107
 108 #define getCharType(x) \
 109     ((x >= 0x0900 && x < 0x097f) ? devaCT[x - 0x0900] : __ND)
 110
 111 sal_Bool SAL_CALL
 112 InputSequenceChecker_hi::checkInputSequence(const OUString& Text,
 113                                             sal_Int32       nStartPos,
 114                                             sal_Unicode     inputChar,
 115                                             sal_Int16       inputCheckMode)
 116   throw(com::sun::star::uno::RuntimeException)
 117 {
 118     sal_Unicode currentChar = Text[nStartPos];
 119   sal_uInt16  ch1 = getCharType(inputChar);
 120     sal_uInt16  ch2 = getCharType(currentChar);
 121
 122     return (_DEV_Composible[inputCheckMode][dev_cell_check[ch2][ch1]]);
 123 }
 124
 125 sal_Int32 SAL_CALL
 126 InputSequenceChecker_hi::correctInputSequence(OUString& Text,
 127                                             sal_Int32       nStartPos,
 128                                             sal_Unicode     inputChar,
 129                                             sal_Int16       inputCheckMode)
 130   throw(com::sun::star::uno::RuntimeException)
 131 {
 132     if (checkInputSequence(Text, nStartPos, inputChar, inputCheckMode))
 133         Text = Text.replaceAt(++nStartPos, 0, OUString(inputChar));
 134     else
 135         nStartPos=Text.getLength();
 136     return nStartPos;
 137 }
 138 } } } }
 139
 140 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */