class

Crowbar::Buffer

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.

Constructors

from_io(io : IO, limit : Int32 | Nil = nil) : self

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new(initial_bytes : Bytes | Array(UInt8) | String = Bytes.empty)

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Instance methods

==(other : Buffer) : Bool

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==(other) : Bool

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

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[](start : Int32, count : Int32) : Bytes

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[](range : Range(B, E)) : Bytes forall B, E

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[](index : Int32) : UInt8

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[]=(index : Int32, value : UInt8)

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[]?(index : Int32) : UInt8 | Nil

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bytes

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clear

Clears all bytes in buffer

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clone

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concat(slice : Bytes | Array(UInt8)) : Nil

Appends bytes to the buffer

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delete_at(pos : Int32) : UInt8 | Nil

Delete single byte at position

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delete_range(start : Int32, length : Int32)

Delete a contiguous range of bytes

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empty?

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find_delimiter_pairs(open_byte : UInt8, close_byte : UInt8) : Array(Tuple(Int32, Int32))

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

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hash(hasher)

See Object#hash(hasher)

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

Searches for a needle sequence starting at offset

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insert(pos : Int32, byte : UInt8)

Insert a single byte at position

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

Insert a byte slice at position

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lines

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

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

Replace a slice with another slice

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size

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

Swaps two equal-length ranges of bytes in-place

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text?

Check if buffer appears to be mostly text

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to_raw_s

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to_s(io : IO) : Nil

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

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

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

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to_s

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

This method should usually not be overridden. It delegates to #to_s(IO) which can be overridden for custom implementations.

Also see #inspect.

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to_slice

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