Sha256: 1be8e28121e987bdcbd6ff5dda1192aa90411c5fa6785d6ed92c084c7b59ed25
Contents?: true
Size: 913 Bytes
Versions: 5
Compression:
Stored size: 913 Bytes
Contents
# frozen_string_literal: true
class ReadBackwardFile
attr_reader :file,
:chunk_size
# Create a ReadBackwardFile
#
# @param [File] file
# the file to read backward from
# @param [Integer] chunk_size
# the chunk size used to step through the file backwards
#
# @api public
def initialize(file, chunk_size = 512)
@file = file
@chunk_size = chunk_size
@file_size = ::File.stat(file).size
end
# Read file in chunks
#
# @yield [String]
# the chunk from file content
#
# @api public
def each_chunk
file.seek(0, IO::SEEK_END)
while file.tell > 0
if file.tell < @chunk_size # don't read beyond file size
@chunk_size = file.tell
end
file.seek(-@chunk_size, IO::SEEK_CUR)
chunk = file.read(@chunk_size)
yield(chunk)
file.seek(-@chunk_size, IO::SEEK_CUR)
end
end
end # ReadBackwardFile
Version data entries
5 entries across 5 versions & 1 rubygems