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      1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
      2 // License & terms of use: http://www.unicode.org/copyright.html
      3 /*
      4  **********************************************************************
      5  *   Copyright (C) 2005-2012, International Business Machines
      6  *   Corporation and others.  All Rights Reserved.
      7  **********************************************************************
      8  */
      9 
     10 #ifndef __CSRUCODE_H
     11 #define __CSRUCODE_H
     12 
     13 #include "unicode/utypes.h"
     14 
     15 #if !UCONFIG_NO_CONVERSION
     16 
     17 #include "csrecog.h"
     18 
     19 U_NAMESPACE_BEGIN
     20 
     21 /**
     22  * This class matches UTF-16 and UTF-32, both big- and little-endian. The
     23  * BOM will be used if it is present.
     24  *
     25  * @internal
     26  */
     27 class CharsetRecog_Unicode : public CharsetRecognizer
     28 {
     29 
     30 public:
     31 
     32     virtual ~CharsetRecog_Unicode();
     33     /* (non-Javadoc)
     34      * @see com.ibm.icu.text.CharsetRecognizer#getName()
     35      */
     36     const char* getName() const = 0;
     37 
     38     /* (non-Javadoc)
     39      * @see com.ibm.icu.text.CharsetRecognizer#match(com.ibm.icu.text.CharsetDetector)
     40      */
     41     UBool match(InputText* textIn, CharsetMatch *results) const = 0;
     42 };
     43 
     44 
     45 class CharsetRecog_UTF_16_BE : public CharsetRecog_Unicode
     46 {
     47 public:
     48 
     49     virtual ~CharsetRecog_UTF_16_BE();
     50 
     51     const char *getName() const;
     52 
     53     UBool match(InputText* textIn, CharsetMatch *results) const;
     54 };
     55 
     56 class CharsetRecog_UTF_16_LE : public CharsetRecog_Unicode
     57 {
     58 public:
     59 
     60     virtual ~CharsetRecog_UTF_16_LE();
     61 
     62     const char *getName() const;
     63 
     64     UBool match(InputText* textIn, CharsetMatch *results) const;
     65 };
     66 
     67 class CharsetRecog_UTF_32 : public CharsetRecog_Unicode
     68 {
     69 protected:
     70     virtual int32_t getChar(const uint8_t *input, int32_t index) const = 0;
     71 public:
     72 
     73     virtual ~CharsetRecog_UTF_32();
     74 
     75     const char* getName() const = 0;
     76 
     77     UBool match(InputText* textIn, CharsetMatch *results) const;
     78 };
     79 
     80 
     81 class CharsetRecog_UTF_32_BE : public CharsetRecog_UTF_32
     82 {
     83 protected:
     84     int32_t getChar(const uint8_t *input, int32_t index) const;
     85 
     86 public:
     87 
     88     virtual ~CharsetRecog_UTF_32_BE();
     89 
     90     const char *getName() const;
     91 };
     92 
     93 
     94 class CharsetRecog_UTF_32_LE : public CharsetRecog_UTF_32
     95 {
     96 protected:
     97     int32_t getChar(const uint8_t *input, int32_t index) const;
     98 
     99 public:
    100     virtual ~CharsetRecog_UTF_32_LE();
    101 
    102     const char* getName() const;
    103 };
    104 
    105 U_NAMESPACE_END
    106 
    107 #endif
    108 #endif /* __CSRUCODE_H */
    109