/usr/lib/ruby/vendor_ruby/mechanize/parser.rb is in ruby-mechanize 2.3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# The parser module provides standard methods for accessing the headers and
# content of a response that are shared across pluggable parsers.
module Mechanize::Parser
extend Forwardable
special_filenames = Regexp.union %w[
AUX
COM1
COM2
COM3
COM4
COM5
COM6
COM7
COM8
COM9
CON
LPT1
LPT2
LPT3
LPT4
LPT5
LPT6
LPT7
LPT8
LPT9
NUL
PRN
]
##
# Special filenames that must be escaped
SPECIAL_FILENAMES = /\A#{special_filenames}/i
##
# The URI this file was retrieved from
attr_accessor :uri
##
# The Mechanize::Headers for this file
attr_accessor :response
alias header response
##
# The HTTP response code
attr_accessor :code
##
# :method: [](header)
#
# Access HTTP +header+ by name
def_delegator :header, :[], :[]
##
# :method: []=(header, value)
#
# Set HTTP +header+ to +value+
def_delegator :header, :[]=, :[]=
##
# :method: key?(header)
#
# Is the named +header+ present?
def_delegator :header, :key?, :key?
##
# :method: each
#
# Enumerate HTTP headers
def_delegator :header, :each, :each
##
# :method: each
#
# Enumerate HTTP headers in capitalized (canonical) form
def_delegator :header, :canonical_each, :canonical_each
##
# Extracts the filename from a Content-Disposition header in the #response
# or from the URI. If +full_path+ is true the filename will include the
# host name and path to the resource, otherwise a filename in the current
# directory is given.
def extract_filename full_path = @full_path
handled = false
if @uri then
uri = @uri
uri += 'index.html' if uri.path.end_with? '/'
path = uri.path.split(/\//)
filename = path.pop || 'index.html'
else
path = []
filename = 'index.html'
end
# Set the filename
if disposition = @response['content-disposition'] then
content_disposition =
Mechanize::HTTP::ContentDispositionParser.parse disposition
if content_disposition && content_disposition.filename then
filename = content_disposition.filename
filename = filename.split(/[\\\/]/).last
handled = true
end
end
if not handled and @uri then
filename << '.html' unless filename =~ /\./
filename << "?#{@uri.query}" if @uri.query
end
if SPECIAL_FILENAMES =~ filename then
filename = "_#{filename}"
end
filename = filename.tr "\x00-\x20<>:\"/\\|?*", '_'
@filename = if full_path then
File.join @uri.host, path, filename
else
filename
end
end
##
# Creates a Mechanize::Header from the Net::HTTPResponse +response+.
#
# This allows the Net::HTTPResponse to be garbage collected sooner.
def fill_header response
@response = Mechanize::Headers.new
response.each { |k,v|
@response[k] = v
} if response
@response
end
##
# Finds a free filename based on +filename+, but is not race-free
def find_free_name filename
filename = @filename unless filename
number = 1
while File.exist? filename do
filename = "#{@filename}.#{number}"
number += 1
end
filename
end
end
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