Class GB18030Encoding

  • All Implemented Interfaces:
    java.lang.Cloneable

    public final class GB18030Encoding
    extends MultiByteEncoding
    • Constructor Detail

      • GB18030Encoding

        protected GB18030Encoding()
    • Method Detail

      • length

        public int length​(byte[] bytes,
                          int p,
                          int end)
        Description copied from class: Encoding
        Returns character length given stream, character position and stream end returns 1 for singlebyte encodings or performs sanity validations for multibyte ones and returns the character length, missing characters in the stream otherwise
        Specified by:
        length in class Encoding
        Returns:
        0 Never > 0 Valid character, length returned -1 Illegal/malformed character < -1 (-1 - n) Number of missing bytes for character in p...end range Oniguruma equivalent: mbc_enc_len modified for 1.9 purposes,
      • lengthForTwoUptoFour

        private int lengthForTwoUptoFour​(byte[] bytes,
                                         int p,
                                         int end,
                                         int s)
      • lengthForThreeUptoFour

        private int lengthForThreeUptoFour​(byte[] bytes,
                                           int p,
                                           int end,
                                           int s)
      • mbcToCode

        public int mbcToCode​(byte[] bytes,
                             int p,
                             int end)
        Description copied from class: Encoding
        Returns code point for a character Oniguruma equivalent: mbc_to_code
        Specified by:
        mbcToCode in class Encoding
      • codeToMbcLength

        public int codeToMbcLength​(int code)
        Description copied from class: Encoding
        Returns character length given a code point Oniguruma equivalent: code_to_mbclen
        Specified by:
        codeToMbcLength in class Encoding
      • codeToMbc

        public int codeToMbc​(int code,
                             byte[] bytes,
                             int p)
        Description copied from class: Encoding
        Extracts code point into it's multibyte representation
        Specified by:
        codeToMbc in class Encoding
        Returns:
        character length for the given code point Oniguruma equivalent: code_to_mbc
      • mbcCaseFold

        public int mbcCaseFold​(int flag,
                               byte[] bytes,
                               IntHolder pp,
                               int end,
                               byte[] lower)
        Description copied from class: AbstractEncoding
        onigenc_ascii_mbc_case_fold
        Overrides:
        mbcCaseFold in class AbstractEncoding
        Parameters:
        flag - case fold flag
        pp - an IntHolder that points at character head
        lower - a buffer where to extract case folded character Oniguruma equivalent: mbc_case_fold
      • isCodeCType

        public boolean isCodeCType​(int code,
                                   int ctype)
        Description copied from class: Encoding
        Perform a check whether given code is of given character type (e.g. used by isWord(someByte) and similar methods)
        Specified by:
        isCodeCType in class Encoding
        Parameters:
        code - a code point of a character
        ctype - a character type to check against Oniguruma equivalent: is_code_ctype
      • ctypeCodeRange

        public int[] ctypeCodeRange​(int ctype,
                                    IntHolder sbOut)
        Description copied from class: Encoding
        Returns code range for a given character type Oniguruma equivalent: get_ctype_code_range
        Specified by:
        ctypeCodeRange in class Encoding
      • getCharsetName

        public java.lang.String getCharsetName()
        Description copied from class: Encoding
        The name of the equivalent Java Charset for this encoding. Defaults to the name of the encoding. Subclasses can override this to provide a different name.
        Overrides:
        getCharsetName in class Encoding
        Returns:
        the name of the equivalent Java Charset for this encoding
      • leftAdjustCharHead

        public int leftAdjustCharHead​(byte[] bytes,
                                      int start,
                                      int s,
                                      int end)
        Description copied from class: Encoding
        Seeks the previous character head in a stream Oniguruma equivalent: left_adjust_char_head
        Specified by:
        leftAdjustCharHead in class Encoding
        Parameters:
        bytes - byte stream
        start - position
        s - stop
        end - end
      • isReverseMatchAllowed

        public boolean isReverseMatchAllowed​(byte[] bytes,
                                             int p,
                                             int end)
        Description copied from class: Encoding
        Returns true if it's safe to use reversal Boyer-Moore search fail fast algorithm Oniguruma equivalent: is_allowed_reverse_match
        Specified by:
        isReverseMatchAllowed in class Encoding