class Crowbar::Buffer

• Crowbar::Buffer
• Reference
• Object

Overview

Binary-safe byte buffer container for non-destructive and in-place transformations. Handles raw bytes, arbitrary non-UTF-8 binaries, and provides slicing/splicing helpers.

Defined in:

Constructors

• .from_io(io : IO, limit : Int32 | Nil = nil) : self
• .new(initial_bytes : Bytes | Array(UInt8) | String = Bytes.empty)

Instance Method Summary

• #==(other : Buffer) : Bool
• #==(other) : Bool

  Returns false (other can only be a Value here).

• #[](start : Int32, count : Int32) : Bytes
• #[](range : Range(B, E)) : Bytes forall B, E
• #[](index : Int32) : UInt8
• #[]=(index : Int32, value : UInt8)
• #[]?(index : Int32) : UInt8 | Nil
• #bytes : Array(UInt8)
• #clear : Nil

  Clears all bytes in buffer

• #clone : Buffer
• #concat(slice : Bytes | Array(UInt8)) : Nil

  Appends bytes to the buffer

• #delete_at(pos : Int32) : UInt8 | Nil

  Delete single byte at position

• #delete_range(start : Int32, length : Int32)

  Delete a contiguous range of bytes

• #empty? : Bool
• #find_delimiter_pairs(open_byte : UInt8, close_byte : UInt8) : Array(Tuple(Int32, Int32))

  Find balanced delimiter pairs like (), [], {}, <>, "", ''

• #hash(hasher)

  See Object#hash(hasher)

• #index(needle : Bytes | Array(UInt8) | Buffer, offset : Int32 = 0) : Int32 | Nil

  Searches for a needle sequence starting at offset

• #insert(pos : Int32, byte : UInt8)

  Insert a single byte at position

• #insert(pos : Int32, slice : Bytes | Array(UInt8))

  Insert a byte slice at position

• #lines : Array(Tuple(Int32, Int32))

  Find line ranges (0-indexed [start, end_exclusive])

• #replace_range(start : Int32, length : Int32, replacement : Bytes | Array(UInt8))

  Replace a slice with another slice

• #size : Int32
• #swap_ranges(pos1 : Int32, len : Int32, pos2 : Int32, len2 : Int32 = len) : Nil

  Swaps two equal-length ranges of bytes in-place

• #text? : Bool

  Check if buffer appears to be mostly text

• #to_raw_s : String
• #to_s(io : IO) : Nil

  Appends a short String representation of this object which includes its class name and its object address.

• #to_s : String

  Returns a nicely readable and concise string representation of this object, typically intended for users.

• #to_slice : Bytes

Constructor Detail

Instance Method Detail

class Person
  def initialize(@name : String, @age : Int32)
  end
end

Person.new("John", 32).to_s # => #<Person:0x10a199f20>