i18npool/source/inputchecker/inputsequencechecker_th.cxx

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  27
  28 // MARKER(update_precomp.py): autogen include statement, do not remove
  29 #include "precompiled_i18npool.hxx"
  30
  31 #include <inputsequencechecker_th.hxx>
  32 #include <wtt.h>
  33
  34 using namespace rtl;
  35
  36 namespace com { namespace sun { namespace star { namespace i18n {
  37
  38 InputSequenceChecker_th::InputSequenceChecker_th()
  39 {
  40     serviceName = "com.sun.star.i18n.InputSequenceChecker_th";
  41 }
  42
  43 InputSequenceChecker_th::~InputSequenceChecker_th()
  44 {
  45 }
  46
  47 /* Table for Thai Cell Manipulation */
  48 sal_Char _TAC_celltype_inputcheck[17][17] = {
  49 /* Cn */ /*  0,   1,   2,   3,   4,   5,   6,   7,   8,   9,   A,   B,   C,   D,   E,   F       */
  50 /* Cn-1 00 */{  'X', 'A', 'A', 'A', 'A', 'A', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
  51      /* 10 */{  'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
  52      /* 20 */{  'X', 'A', 'A', 'A', 'A', 'S', 'A', 'C', 'C', 'C', 'C', 'C', 'C', 'C', 'C', 'C', 'C' },
  53      /* 30 */{  'X', 'S', 'A', 'S', 'S', 'S', 'S', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
  54      /* 40 */{  'X', 'A', 'A', 'A', 'A', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
  55      /* 50 */{  'X', 'A', 'A', 'A', 'A', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
  56      /* 60 */{  'X', 'A', 'A', 'A', 'S', 'A', 'S', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
  57      /* 70 */{  'X', 'A', 'A', 'A', 'A', 'S', 'A', 'R', 'R', 'R', 'C', 'C', 'R', 'R', 'R', 'R', 'R' },
  58      /* 80 */{  'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'R', 'R', 'R', 'R', 'R', 'R' },
  59      /* 90 */{  'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
  60      /* A0 */{  'X', 'A', 'A', 'A', 'A', 'A', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
  61      /* B0 */{  'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
  62      /* C0 */{  'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
  63      /* D0 */{  'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
  64      /* E0 */{  'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'C', 'R', 'R', 'R', 'R', 'R' },
  65      /* F0 */{  'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'R', 'R', 'R', 'R', 'R', 'R' },
  66          { 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'R', 'C', 'R', 'R', 'R', 'R' }
  67 };
  68
  69 sal_Bool _TAC_Composible[3][5] = {
  70         /*  'A',    'C',        'S',        'R',        'X'   */
  71 /* Mode 0 */    {sal_True,  sal_True,   sal_True,   sal_True,   sal_True}, // PASSTHROUGH = 0
  72 /* Mode 1 */    {sal_True,  sal_True,   sal_True,   sal_False,      sal_True}, // BASIC = 1
  73 /* Mode 2 */    {sal_True,  sal_True,   sal_False,      sal_False,      sal_True}  // STRICT = 2
  74 };
  75
  76 static sal_Bool SAL_CALL check(sal_Unicode ch1, sal_Unicode ch2, sal_Int16 inputCheckMode)
  77 {
  78     sal_Int16  composible_class;
  79     switch (_TAC_celltype_inputcheck[getCharType(ch1)][getCharType(ch2)]) {
  80         case 'A': composible_class = 0; break;
  81         case 'C': composible_class = 1; break;
  82         case 'S': composible_class = 2; break;
  83         case 'R': composible_class = 3; break;
  84         case 'X': composible_class = 4; break;
  85         default:  composible_class = 0;
  86     }
  87     return (_TAC_Composible[inputCheckMode][composible_class]);
  88 }
  89
  90 sal_Bool SAL_CALL
  91 InputSequenceChecker_th::checkInputSequence(const OUString& Text, sal_Int32 nStartPos,
  92     sal_Unicode inputChar, sal_Int16 inputCheckMode) throw(com::sun::star::uno::RuntimeException)
  93 {
  94     return check(Text[nStartPos], inputChar, inputCheckMode);
  95 }
  96
  97 sal_Int32 SAL_CALL
  98 InputSequenceChecker_th::correctInputSequence(OUString& Text,
  99                                             sal_Int32       nStartPos,
 100                                             sal_Unicode     inputChar,
 101                                             sal_Int16       inputCheckMode)
 102   throw(com::sun::star::uno::RuntimeException)
 103 {
 104 /* 9 rules for input sequence correction, see issue i42661 for detail,
 105
 106 http://www.openoffice.org/issues/show_bug.cgi?id=42661
 107
 108 <abv> = <av1>|<av2>|<av3>|<bv1>|<bv2>
 109 <abv1> = <av1>|<bv1>
 110 <thanthakhat> = 0E4C (karan)
 111
 112 1. <cons> <abv>_x + <abv>_y => <cons> <abv>_y (replace)
 113 2. <cons> <tone>_x + <tone>_y => <cons> <tone>_y (replace)
 114 3. <cons> <abv> <tone>_x + <tone>_y => <cons> <abv> <tone>_y (replace)
 115 4. <cons> <abv>_x <tone> + <abv>_y => <cons> <abv>_y <tone> (replace, reorder)
 116 5. <cons> <tone> + <abv> => <cons> <abv> <tone> (reorder)
 117 6. <cons> <fv1> + <tone> => <cons> <tone> <fv1> (reorder)
 118 7. <cons> <tone>_x <fv1> + <tone>_y => <cons> <tone>_y <fv1> (replace, reorder)
 119 8. <cons> <thanthakhat> + <abv1> => <cons> <abv1> <thanthakhat> (reorder)
 120 9. <cons> <abv1>_x <thanthakhat> + <abv1>_y => <cons> <abv1>_y <thanthakhat>(reorder, replace)
 121 */
 122 #define CT_ABV(t)  ( (t>=CT_AV1 && t<=CT_AV3) || t==CT_BV1 || t==CT_BV2)
 123 #define CT_ABV1(t) (t==CT_AV1 || t==CT_BV1)
 124
 125     if (check(Text[nStartPos], inputChar, inputCheckMode))
 126         Text = Text.replaceAt(++nStartPos, 0, OUString(inputChar));
 127     else if (nStartPos > 0 && getCharType(Text[nStartPos-1]) == CT_CONS) {
 128         sal_uInt16 t1=getCharType(Text[nStartPos]), t2=getCharType(inputChar);
 129         if ( (CT_ABV(t1) && CT_ABV(t2)) || // 1.
 130                 (t1==CT_TONE && t2==CT_TONE) )// 2.
 131             Text = Text.replaceAt(nStartPos, 1, OUString(inputChar));
 132         else if ( (t1==CT_TONE && CT_ABV(t2)) ||  // 5.
 133                 (t1==CT_FV1 && t2==CT_TONE) ||  // 6.
 134                 (Text[nStartPos]==0x0E4C && CT_ABV1(t2)) ) // 8.
 135             Text = Text.replaceAt(nStartPos++, 0, OUString(inputChar));
 136         else
 137             nStartPos=Text.getLength();
 138     } else if (nStartPos > 1 && getCharType(Text[nStartPos-2]) == CT_CONS) {
 139         sal_uInt16 t1=getCharType(Text[nStartPos-1]), t2=getCharType(Text[nStartPos]), t3=getCharType(inputChar);
 140         if (CT_ABV(t1) && t2==CT_TONE && t3==CT_TONE) // 3.
 141             Text = Text.replaceAt(nStartPos, 1, OUString(inputChar));
 142         else if ( (CT_ABV(t1) && t2==CT_TONE && CT_ABV(t3)) || // 4.
 143                 (t1==CT_TONE && t2==CT_FV1 && t3==CT_TONE) || // 7.
 144                 (CT_ABV1(t1) && Text[nStartPos]==0x0E4C && CT_ABV1(t3)) ) // 9.
 145             Text = Text.replaceAt(nStartPos-1, 1, OUString(inputChar));
 146         else
 147             nStartPos=Text.getLength();
 148     } else
 149         nStartPos=Text.getLength();
 150
 151     return nStartPos;
 152 }
 153
 154 } } } }