icuSources/i18n/csrsbcs.h

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4  **********************************************************************
   5  *   Copyright (C) 2005-2015, International Business Machines
   6  *   Corporation and others.  All Rights Reserved.
   7  **********************************************************************
   8  */
   9
  10 #ifndef __CSRSBCS_H
  11 #define __CSRSBCS_H
  12
  13 #include "unicode/uobject.h"
  14
  15 #if !UCONFIG_NO_CONVERSION
  16
  17 #include "csrecog.h"
  18
  19 U_NAMESPACE_BEGIN
  20
  21 class NGramParser : public UMemory
  22 {
  23 private:
  24     int32_t ngram;
  25     const int32_t *ngramList;
  26
  27     int32_t ngramCount;
  28     int32_t hitCount;
  29
  30 protected:
  31         int32_t byteIndex;
  32     const uint8_t *charMap;
  33
  34         void addByte(int32_t b);
  35
  36 public:
  37     NGramParser(const int32_t *theNgramList, const uint8_t *theCharMap);
  38     virtual ~NGramParser();
  39
  40 private:
  41     /*
  42     * Binary search for value in table, which must have exactly 64 entries.
  43     */
  44     int32_t search(const int32_t *table, int32_t value);
  45
  46     void lookup(int32_t thisNgram);
  47
  48     virtual int32_t nextByte(InputText *det);
  49         virtual void parseCharacters(InputText *det);
  50
  51 public:
  52     int32_t parse(InputText *det);
  53
  54 };
  55
  56 #if !UCONFIG_ONLY_HTML_CONVERSION
  57 class NGramParser_IBM420 : public NGramParser
  58 {
  59 public:
  60     NGramParser_IBM420(const int32_t *theNgramList, const uint8_t *theCharMap);
  61     ~NGramParser_IBM420();
  62
  63 private:
  64     int32_t alef;
  65     int32_t isLamAlef(int32_t b);
  66     int32_t nextByte(InputText *det);
  67     void parseCharacters(InputText *det);
  68 };
  69 #endif
  70
  71
  72 class CharsetRecog_sbcs : public CharsetRecognizer
  73 {
  74 public:
  75     CharsetRecog_sbcs();
  76     virtual ~CharsetRecog_sbcs();
  77     virtual const char *getName() const = 0;
  78     virtual UBool match(InputText *det, CharsetMatch *results) const = 0;
  79     virtual int32_t match_sbcs(InputText *det, const int32_t ngrams[], const uint8_t charMap[]) const;
  80 };
  81
  82 class CharsetRecog_8859_1 : public CharsetRecog_sbcs
  83 {
  84 public:
  85     virtual ~CharsetRecog_8859_1();
  86     const char *getName() const;
  87     virtual UBool match(InputText *det, CharsetMatch *results) const;
  88 };
  89
  90 class CharsetRecog_8859_2 : public CharsetRecog_sbcs
  91 {
  92 public:
  93     virtual ~CharsetRecog_8859_2();
  94     const char *getName() const;
  95     virtual UBool match(InputText *det, CharsetMatch *results) const;
  96 };
  97
  98 class CharsetRecog_8859_5 : public CharsetRecog_sbcs
  99 {
 100 public:
 101     virtual ~CharsetRecog_8859_5();
 102     const char *getName() const;
 103 };
 104
 105 class CharsetRecog_8859_6 : public CharsetRecog_sbcs
 106 {
 107 public:
 108     virtual ~CharsetRecog_8859_6();
 109
 110     const char *getName() const;
 111 };
 112
 113 class CharsetRecog_8859_7 : public CharsetRecog_sbcs
 114 {
 115 public:
 116     virtual ~CharsetRecog_8859_7();
 117
 118     const char *getName() const;
 119 };
 120
 121 class CharsetRecog_8859_8 : public CharsetRecog_sbcs
 122 {
 123 public:
 124     virtual ~CharsetRecog_8859_8();
 125
 126     virtual const char *getName() const;
 127 };
 128
 129 class CharsetRecog_8859_9 : public CharsetRecog_sbcs
 130 {
 131 public:
 132     virtual ~CharsetRecog_8859_9();
 133
 134     const char *getName() const;
 135 };
 136
 137
 138
 139 class CharsetRecog_8859_5_ru : public CharsetRecog_8859_5
 140 {
 141 public:
 142     virtual ~CharsetRecog_8859_5_ru();
 143
 144     const char *getLanguage() const;
 145
 146     virtual UBool match(InputText *det, CharsetMatch *results) const;
 147 };
 148
 149 class CharsetRecog_8859_6_ar : public CharsetRecog_8859_6
 150 {
 151 public:
 152     virtual ~CharsetRecog_8859_6_ar();
 153
 154     const char *getLanguage() const;
 155
 156     virtual UBool match(InputText *det, CharsetMatch *results) const;
 157 };
 158
 159 class CharsetRecog_8859_7_el : public CharsetRecog_8859_7
 160 {
 161 public:
 162     virtual ~CharsetRecog_8859_7_el();
 163
 164     const char *getLanguage() const;
 165
 166     virtual UBool match(InputText *det, CharsetMatch *results) const;
 167 };
 168
 169 class CharsetRecog_8859_8_I_he : public CharsetRecog_8859_8
 170 {
 171 public:
 172     virtual ~CharsetRecog_8859_8_I_he();
 173
 174     const char *getName() const;
 175
 176     const char *getLanguage() const;
 177
 178     virtual UBool match(InputText *det, CharsetMatch *results) const;
 179 };
 180
 181 class CharsetRecog_8859_8_he : public CharsetRecog_8859_8
 182 {
 183 public:
 184     virtual ~CharsetRecog_8859_8_he ();
 185
 186     const char *getLanguage() const;
 187
 188     virtual UBool match(InputText *det, CharsetMatch *results) const;
 189 };
 190
 191 class CharsetRecog_8859_9_tr : public CharsetRecog_8859_9
 192 {
 193 public:
 194     virtual ~CharsetRecog_8859_9_tr ();
 195
 196     const char *getLanguage() const;
 197
 198     virtual UBool match(InputText *det, CharsetMatch *results) const;
 199 };
 200
 201 class CharsetRecog_windows_1256 : public CharsetRecog_sbcs
 202 {
 203 public:
 204     virtual ~CharsetRecog_windows_1256();
 205
 206     const char *getName() const;
 207
 208     const char *getLanguage() const;
 209
 210     virtual UBool match(InputText *det, CharsetMatch *results) const;
 211 };
 212
 213 class CharsetRecog_windows_1251 : public CharsetRecog_sbcs
 214 {
 215 public:
 216     virtual ~CharsetRecog_windows_1251();
 217
 218     const char *getName() const;
 219
 220     const char *getLanguage() const;
 221
 222     virtual UBool match(InputText *det, CharsetMatch *results) const;
 223 };
 224
 225
 226 class CharsetRecog_KOI8_R : public CharsetRecog_sbcs
 227 {
 228 public:
 229     virtual ~CharsetRecog_KOI8_R();
 230
 231     const char *getName() const;
 232
 233     const char *getLanguage() const;
 234
 235     virtual UBool match(InputText *det, CharsetMatch *results) const;
 236 };
 237
 238 #if !UCONFIG_ONLY_HTML_CONVERSION
 239 class CharsetRecog_IBM424_he : public CharsetRecog_sbcs
 240 {
 241 public:
 242     virtual ~CharsetRecog_IBM424_he();
 243
 244     const char *getLanguage() const;
 245 };
 246
 247 class CharsetRecog_IBM424_he_rtl : public CharsetRecog_IBM424_he {
 248 public:
 249     virtual ~CharsetRecog_IBM424_he_rtl();
 250
 251     const char *getName() const;
 252
 253     virtual UBool match(InputText *det, CharsetMatch *results) const;
 254 };
 255
 256 class CharsetRecog_IBM424_he_ltr : public CharsetRecog_IBM424_he {
 257     virtual ~CharsetRecog_IBM424_he_ltr();
 258
 259     const char *getName() const;
 260
 261     virtual UBool match(InputText *det, CharsetMatch *results) const;
 262 };
 263
 264 class CharsetRecog_IBM420_ar : public CharsetRecog_sbcs
 265 {
 266 public:
 267     virtual ~CharsetRecog_IBM420_ar();
 268
 269     const char *getLanguage() const;
 270         int32_t match_sbcs(InputText *det, const int32_t ngrams[], const uint8_t charMap[]) const;
 271
 272 };
 273
 274 class CharsetRecog_IBM420_ar_rtl : public CharsetRecog_IBM420_ar {
 275 public:
 276     virtual ~CharsetRecog_IBM420_ar_rtl();
 277
 278     const char *getName() const;
 279
 280     virtual UBool match(InputText *det, CharsetMatch *results) const;
 281 };
 282
 283 class CharsetRecog_IBM420_ar_ltr : public CharsetRecog_IBM420_ar {
 284     virtual ~CharsetRecog_IBM420_ar_ltr();
 285
 286     const char *getName() const;
 287
 288     virtual UBool match(InputText *det, CharsetMatch *results) const;
 289 };
 290 #endif
 291
 292 U_NAMESPACE_END
 293
 294 #endif /* !UCONFIG_NO_CONVERSION */
 295 #endif /* __CSRSBCS_H */