i18npool/source/inputchecker/inputsequencechecker_hi.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_hi.hxx>
  32
  33 using namespace rtl;
  34
  35 namespace com {
  36 namespace sun {
  37 namespace star {
  38 namespace i18n {
  39
  40 InputSequenceChecker_hi::InputSequenceChecker_hi()
  41 {
  42     serviceName = "com.sun.star.i18n.InputSequenceChecker_hi";
  43 }
  44
  45 InputSequenceChecker_hi::~InputSequenceChecker_hi()
  46 {
  47 }
  48 /* Non-Defined Class type */
  49 #define __ND        0
  50
  51 /*
  52  * Devanagari character type definitions
  53  */
  54 #define __UP  1  // ChandraBindu & Anuswar
  55 #define __NP  2  // Visarg
  56 #define __IV    3  // Independant Vowels
  57 #define __CN    4  // Consonants except _CK & _RC
  58 #define __CK    5  // Consonants that can be followed by Nukta
  59 #define __RC    6  // Ra
  60 #define __NM    7  // Matra
  61 #define __RM    8  // Ra + HAL
  62 #define __IM    9  // Choti I Matra
  63 #define __HL    10 // HAL
  64 #define __NK    11 // Nukta
  65 #define __VD    12 // Vedic
  66 #define __HD    13 // Hindu Numerals
  67
  68 /*
  69  * Devanagari character type table
  70  */
  71 static const sal_uInt16 devaCT[128] = {
  72 /*         0,    1,    2,    3,    4,    5,    6,    7,
  73            8,    9,    A,    B,    C,    D,    E,    F, */
  74 /* 0900 */ __ND, __UP, __UP, __NP, __ND, __IV, __IV, __IV,
  75            __IV, __IV, __IV, __IV, __IV, __IV, __IV, __IV,
  76 /* 0910 */ __IV, __IV, __IV, __IV, __IV, __CK, __CK, __CK,
  77            __CN, __CN, __CN, __CN, __CK, __CN, __CN, __CN,
  78 /* 0920 */ __CN, __CK, __CK, __CN, __CN, __CN, __CN, __CN,
  79            __CN, __CN, __CN, __CK, __CN, __CN, __CN, __CN,
  80 /* 0930 */ __RC, __CN, __CN, __CN, __CN, __CN, __CN, __CN,
  81            __CN, __CN, __ND, __ND, __NK, __VD, __NM, __IM,
  82 /* 0940 */ __RM, __NM, __NM, __NM, __NM, __RM, __RM, __RM,
  83            __RM, __RM, __RM, __RM, __RM, __HL, __ND, __ND,
  84 /* 0950 */ __ND, __VD, __VD, __VD, __VD, __ND, __ND, __ND,
  85            __CN, __CN, __CN, __CN, __CN, __CN, __CN, __CN,
  86 /* 0960 */ __IV, __IV, __NM, __NM, __ND, __ND, __HD, __HD,
  87            __HD, __HD, __HD, __HD, __HD, __HD, __HD, __HD,
  88 /* 0970 */ __ND, __ND, __ND, __ND, __ND, __ND, __ND, __ND,
  89            __ND, __ND, __ND, __ND, __ND, __ND, __ND, __ND,
  90 };
  91
  92 /*
  93  * Devanagari character composition table
  94  */
  95 static const sal_uInt16 dev_cell_check[14][14] = {
  96   /*        ND, UP, NP, IV, CN, CK, RC, NM, RM, IM, HL, NK, VD, HD, */
  97   /* 0  */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* ND */
  98   /* 1  */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* UP */
  99   /* 2  */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* NP */
 100   /* 3  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* IV */
 101   /* 4  */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  0,  0,  0 }, /* CN */
 102   /* 5  */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  1,  0,  0 }, /* CK */
 103   /* 6  */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  0,  0,  0 }, /* RC */
 104   /* 7  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* NM */
 105   /* 8  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* RM */
 106   /* 9  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* IM */
 107   /* 10 */ { 0,  0,  0,  0,  1,  1,  1,  0,  0,  0,  0,  0,  0,  0 }, /* HL */
 108   /* 11 */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  0,  0,  0 }, /* NK */
 109   /* 12 */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* VD */
 110   /* 13 */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }  /* HD */
 111 };
 112
 113 sal_Bool _DEV_Composible[2][2] = {
 114 /* Mode 0 */    {sal_True, sal_True }, // PASSTHROUGH = 0
 115 /* Mode 1 */    {sal_False, sal_True}  // STRICT = 1
 116 };
 117
 118 #define getCharType(x) \
 119     ((x >= 0x0900 && x < 0x097f) ? devaCT[x - 0x0900] : __ND)
 120
 121 sal_Bool SAL_CALL
 122 InputSequenceChecker_hi::checkInputSequence(const OUString& Text,
 123                                             sal_Int32       nStartPos,
 124                                             sal_Unicode     inputChar,
 125                                             sal_Int16       inputCheckMode)
 126   throw(com::sun::star::uno::RuntimeException)
 127 {
 128     sal_Unicode currentChar = Text[nStartPos];
 129   sal_uInt16  ch1 = getCharType(inputChar);
 130     sal_uInt16  ch2 = getCharType(currentChar);
 131
 132     return (_DEV_Composible[inputCheckMode][dev_cell_check[ch2][ch1]]);
 133 }
 134
 135 sal_Int32 SAL_CALL
 136 InputSequenceChecker_hi::correctInputSequence(OUString& Text,
 137                                             sal_Int32       nStartPos,
 138                                             sal_Unicode     inputChar,
 139                                             sal_Int16       inputCheckMode)
 140   throw(com::sun::star::uno::RuntimeException)
 141 {
 142     if (checkInputSequence(Text, nStartPos, inputChar, inputCheckMode))
 143         Text = Text.replaceAt(++nStartPos, 0, OUString(inputChar));
 144     else
 145         nStartPos=Text.getLength();
 146     return nStartPos;
 147 }
 148 } } } }