Package org.jruby.util

Class Pack

java.lang.Object
org.jruby.util.Pack
public class Pack extends Object

  • Field Details

    • sHexDigits

      public static final byte[] sHexDigits

    • b64_xtable

      public static final int[] b64_xtable

  • Constructor Details

    • Pack

      public Pack()

  • Method Details

    • unpackInt_i

      public static int unpackInt_i(ByteBuffer enc)

    • packInt_i

      public static ByteList packInt_i(ByteList result, int s)

    • unpack

      public static RubyArray unpack(ThreadContext context, ByteList encodedString, ByteList formatString)

    • unpack

      public static RubyArray unpack(ThreadContext context, RubyString encoded, ByteList formatString)
      Parameters:
      context -
      encoded -
      formatString -
      Returns:
      unpacked array
      See Also:

    • unpackWithBlock

      public static RubyArray unpackWithBlock(ThreadContext context, RubyString encoded, ByteList formatString, Block block)
      Decodes str (which may contain binary data) according to the format string, returning an array of each value extracted. The format string consists of a sequence of single-character directives.
      Each directive may be followed by a number, indicating the number of times to repeat with this directive. An asterisk (``*'') will use up all remaining elements.
      Note that if passed a block, this method will return null and instead yield results to the block. The directives sSiIlL may each be followed by an underscore (``_'') to use the underlying platform's native size for the specified type; otherwise, it uses a platform-independent consistent size.
      Spaces are ignored in the format string.
      layout table

      Directives for String#unpack
      layout table
      Format Function Returns
      A String with trailing nulls and spaces removed. String
      a String. String
      B Extract bits from each character (msb first). String
      b Extract bits from each character (lsb first). String
      C Extract a character as an unsigned integer. Fixnum
      c Extract a character as an integer. Fixnum
      d Treat sizeof(double) characters as a native double. Float
      E Treat sizeof(double) characters as a double in little-endian byte order. Float
      e Treat sizeof(float) characters as a float in little-endian byte order. Float
      f Treat sizeof(float) characters as a native float. Float
      G Treat sizeof(double) characters as a double in network byte order. Float
      g Treat sizeof(float) characters as a float in network byte order. Float
      H Extract hex nibbles from each character (most significant first). String
      h Extract hex nibbles from each character (least significant first). String
      I Treat sizeof(int) 1 successive characters as an unsigned native integer. Integer
      i Treat sizeof(int) 1 successive characters as a signed native integer. Integer
      L Treat four1 successive characters as an unsigned native long integer. Integer
      l Treat four1 successive characters as a signed native long integer. Integer
      M Extract a quoted-printable string. String
      m Extract a base64 encoded string. String
      N Treat four characters as an unsigned long in network byte order. Fixnum
      n Treat two characters as an unsigned short in network byte order. Fixnum
      P Treat sizeof(char *) characters as a pointer, and return len characters from the referenced location. String
      p Treat sizeof(char *) characters as a pointer to a null-terminated string. String
      S Treat two1 successive characters as an unsigned short in native byte order. Fixnum
      s Treat two1 successive characters as a signed short in native byte order. Fixnum
      U Extract UTF-8 characters as unsigned integers. Integer
      u Extract a UU-encoded string. String
      V Treat four characters as an unsigned long in little-endian byte order. Fixnum
      v Treat two characters as an unsigned short in little-endian byte order. Fixnum
      X Skip backward one character. ---
      x Skip forward one character. ---
      Z String with trailing nulls removed. String
      @ Skip to the offset given by the length argument. ---
      bullet

      1 May be modified by appending ``_'' to the directive.

      See Also:

    • unpackWithBlock

      public static RubyArray unpackWithBlock(ThreadContext context, RubyString encoded, ByteList formatString, long offset, Block block)

    • unpack1WithBlock

      public static IRubyObject unpack1WithBlock(ThreadContext context, RubyString encoded, ByteList formatString, Block block)

    • unpack1WithBlock

      public static IRubyObject unpack1WithBlock(ThreadContext context, RubyString encoded, ByteList formatString, long offset, Block block)

    • utf8Decode

      public static int utf8Decode(Ruby runtime, byte[] to, int p, int code)
      rb_uv_to_utf8

    • safeGet

      public static int safeGet(ByteBuffer encode)

    • getDirective

      public static int getDirective(ThreadContext context, String mode, ByteList formatString, ByteBuffer encode)

    • decode

      public static IRubyObject decode(ThreadContext context, ByteBuffer encode, int occurrences, RubyArray result, Block block, Pack.Converter converter, int mode)

    • pack

      public static RubyString pack(ThreadContext context, RubyArray list, RubyString formatString, RubyString buffer)

    • unpack

      @Deprecated public static RubyArray unpack(Ruby runtime, ByteList encodedString, ByteList formatString)
      Deprecated.

    • pack

      @Deprecated public static RubyString pack(Ruby runtime, RubyArray list, ByteList formatString)
      Deprecated.

    • pack

      @Deprecated public static RubyString pack(ThreadContext context, Ruby runtime, RubyArray list, RubyString formatString)
      Deprecated.

    • decode

      @Deprecated public static void decode(ThreadContext context, Ruby runtime, ByteBuffer encode, int occurrences, RubyArray result, Block block, Pack.Converter converter)
      Deprecated.

    • unpackWithBlock

      @Deprecated public static RubyArray unpackWithBlock(ThreadContext context, Ruby runtime, ByteList encodedString, ByteList formatString, Block block)
      Deprecated.