Module: Thrift::Bytes

Defined in:
lib/thrift/bytes.rb

Overview

A collection of utilities for working with bytes and byte buffers.

Class Method Summary collapse

Class Method Details

.convert_to_string(utf8_buffer) ⇒ Object

Converts the given UTF-8 byte buffer into a String

utf8_buffer - A String, with BINARY encoding, containing UTF-8 bytes

Returns a new String with UTF-8 encoding,



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# File 'lib/thrift/bytes.rb', line 93

def self.convert_to_string(utf8_buffer)
  # duplicate the buffer, force encoding to UTF-8
  utf8_buffer.dup.force_encoding(Encoding::UTF_8)
end

.convert_to_utf8_byte_buffer(string) ⇒ Object

Converts the given String to a UTF-8 byte buffer.

string - The String to convert.

Returns a new String with BINARY encoding, containing the UTF-8 bytes of the original string.



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# File 'lib/thrift/bytes.rb', line 77

def self.convert_to_utf8_byte_buffer(string)
  if string.encoding != Encoding::UTF_8
    # transcode to UTF-8
    string = string.encode(Encoding::UTF_8)
  else
    # encoding is already UTF-8, but a duplicate is needed
    string = string.dup
  end
  string.force_encoding(Encoding::BINARY)
end

.empty_byte_buffer(size = nil) ⇒ Object

Creates and empty byte buffer (String with BINARY encoding)

size - The Integer size of the buffer (default: nil) to create

Returns a String with BINARY encoding, filled with null characters if size is greater than zero



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# File 'lib/thrift/bytes.rb', line 30

def self.empty_byte_buffer(size = nil)
  if (size && size > 0)
    "\0".b * size
  else
    ''.b
  end
end

.force_binary_encoding(buffer) ⇒ Object

Forces the encoding of the buffer to BINARY. If the buffer passed is frozen, then it will be duplicated.

buffer - The String to force the encoding of.

Returns the String passed with an encoding of BINARY; returned String may be a duplicate.



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# File 'lib/thrift/bytes.rb', line 45

def self.force_binary_encoding(buffer)
  buffer = buffer.dup if buffer.frozen?
  buffer.force_encoding(Encoding::BINARY)
end

.get_string_byte(string, index) ⇒ Object

Gets the byte value of a given position in a String.

string - The String to retrive the byte value from. index - The Integer location of the byte value to retrieve.

Returns an Integer value between 0 and 255.



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# File 'lib/thrift/bytes.rb', line 56

def self.get_string_byte(string, index)
  string.getbyte(index)
end

.set_string_byte(string, index, byte) ⇒ Object

Sets the byte value given to a given index in a String.

string - The String to set the byte value in. index - The Integer location to set the byte value at. byte - The Integer value (0 to 255) to set in the string.

Returns an Integer value of the byte value to set.



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# File 'lib/thrift/bytes.rb', line 67

def self.set_string_byte(string, index, byte)
  string.setbyte(index, byte)
end