Sha256: b0a467e2428882cc297e95e2f4e7c482165335e0861de7dccc66f1a48a4e213b
Contents?: true
Size: 1.1 KB
Versions: 37
Compression:
Stored size: 1.1 KB
Contents
class ProjectSearch
# This class discriminates between binary and textual data.
class BinaryDataDetector
# Is the data binary?
#
# @param [String] data
def self.binary?(data)
not textual?(data)
end
# Is the data plain text?
#
# @param [String] data
def self.textual?(data)
found_good_byte = false
data.each_byte do |b|
return false if bad_byte?(b)
found_good_byte = found_good_byte || good_byte?(b)
end
found_good_byte
end
INDIVIDUAL_GOOD_BYTES = [9, 10, 13]
# At least one of these good bytes must be found for the text to be
# discriminated as plain text.
#
# @param [Fixnum] byte
def self.good_byte?(byte)
(byte >= 32 and byte <= 255) or INDIVIDUAL_GOOD_BYTES.include?(byte)
end
INDIVIDUAL_BAD_BYTES = [0, 6, 14]
# If any of these bytes are found then we immediately discriminate the data
# as binary.
#
# @param [Fixnum] byte
def self.bad_byte?(byte)
(byte >= 14 and byte <= 31) or INDIVIDUAL_BAD_BYTES.include?(byte)
end
end
end
Version data entries
37 entries across 37 versions & 2 rubygems