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require "shellwords"
module Train
class File
class Remote
class Unix < Train::File::Remote
def sanitize_filename(path)
@spath = Shellwords.escape(path) || @path
end
def content
@content ||=
if !exist? || directory?
nil
elsif size.nil? || size == 0
""
else
@backend.run_command("cat #{@spath}").stdout || ""
end
end
def exist?
@exist ||= begin
f = @follow_symlink ? "" : " || test -L #{@spath}"
@backend.run_command("test -e #{@spath}" + f)
.exit_status == 0
end
end
def mounted
@mounted ||=
@backend.run_command("mount | grep -- ' on #{@path} '")
end
%w{
type mode owner group uid gid mtime size selinux_label
}.each do |field|
define_method field.to_sym do
stat[field.to_sym]
end
end
def mode?(sth)
mode == sth
end
def grouped_into?(sth)
group == sth
end
def linked_to?(dst)
link_path == dst
end
def link_path
symlink? ? path : nil
end
def shallow_link_path
return nil unless symlink?
@shallow_link_path ||=
@backend.run_command("readlink #{@spath}").stdout.chomp
end
def unix_mode_mask(owner, type)
o = UNIX_MODE_OWNERS[owner.to_sym]
return nil if o.nil?
t = UNIX_MODE_TYPES[type.to_sym]
return nil if t.nil?
t & o
end
def path
return @path unless @follow_symlink && symlink?
@link_path ||= read_target_path
end
private
# Returns full path of a symlink target(real dest) or '' on symlink loop
def read_target_path
full_path = @backend.run_command("readlink -n #{@spath} -f").stdout
# Needed for some OSes like OSX that returns relative path
# when the link and target are in the same directory
if !full_path.start_with?("/") && full_path != ""
full_path = ::File.expand_path("../#{full_path}", @spath)
end
full_path
end
UNIX_MODE_OWNERS = {
all: 00777,
owner: 00700,
group: 00070,
other: 00007,
}.freeze
UNIX_MODE_TYPES = {
r: 00444,
w: 00222,
x: 00111,
}.freeze
end
end
end
end
|
