| /* |
| ********************************************************************** |
| * Copyright (C) 2005-2012, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| ********************************************************************** |
| */ |
| |
| #ifndef __CSR2022_H |
| #define __CSR2022_H |
| |
| #include "unicode/utypes.h" |
| |
| #if !UCONFIG_NO_CONVERSION |
| |
| #include "csrecog.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| class CharsetMatch; |
| |
| /** |
| * class CharsetRecog_2022 part of the ICU charset detection imlementation. |
| * This is a superclass for the individual detectors for |
| * each of the detectable members of the ISO 2022 family |
| * of encodings. |
| * |
| * The separate classes are nested within this class. |
| * |
| * @internal |
| */ |
| class CharsetRecog_2022 : public CharsetRecognizer |
| { |
| |
| public: |
| virtual ~CharsetRecog_2022() = 0; |
| |
| protected: |
| |
| /** |
| * Matching function shared among the 2022 detectors JP, CN and KR |
| * Counts up the number of legal an unrecognized escape sequences in |
| * the sample of text, and computes a score based on the total number & |
| * the proportion that fit the encoding. |
| * |
| * |
| * @param text the byte buffer containing text to analyse |
| * @param textLen the size of the text in the byte. |
| * @param escapeSequences the byte escape sequences to test for. |
| * @return match quality, in the range of 0-100. |
| */ |
| int32_t match_2022(const uint8_t *text, |
| int32_t textLen, |
| const uint8_t escapeSequences[][5], |
| int32_t escapeSequences_length) const; |
| |
| }; |
| |
| class CharsetRecog_2022JP :public CharsetRecog_2022 |
| { |
| public: |
| virtual ~CharsetRecog_2022JP(); |
| |
| const char *getName() const; |
| |
| UBool match(InputText *textIn, CharsetMatch *results) const; |
| }; |
| |
| class CharsetRecog_2022KR :public CharsetRecog_2022 { |
| public: |
| virtual ~CharsetRecog_2022KR(); |
| |
| const char *getName() const; |
| |
| UBool match(InputText *textIn, CharsetMatch *results) const; |
| |
| }; |
| |
| class CharsetRecog_2022CN :public CharsetRecog_2022 |
| { |
| public: |
| virtual ~CharsetRecog_2022CN(); |
| |
| const char* getName() const; |
| |
| UBool match(InputText *textIn, CharsetMatch *results) const; |
| }; |
| |
| U_NAMESPACE_END |
| |
| #endif |
| #endif /* __CSR2022_H */ |