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# <!-- rdoc-file=file.c -->
# FileTest implements file test operations similar to those used in File::Stat.
# It exists as a standalone module, and its methods are also insinuated into the
# File class. (Note that this is not done by inclusion: the interpreter cheats).
#
module FileTest
# <!--
# rdoc-file=file.c
# - File.blockdev?(file_name) -> true or false
# -->
# Returns `true` if the named file is a block device.
#
# *file_name* can be an IO object.
#
def self?.blockdev?: (String | IO file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.chardev?(file_name) -> true or false
# -->
# Returns `true` if the named file is a character device.
#
# *file_name* can be an IO object.
#
def self?.chardev?: (String | IO file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.directory?(file_name) -> true or false
# -->
# Returns `true` if the named file is a directory, or a symlink that points at a
# directory, and `false` otherwise.
#
# *file_name* can be an IO object.
#
# File.directory?(".")
#
def self?.directory?: (String | IO file_name) -> bool
# <!-- rdoc-file=file.c -->
# Returns `true` if the named file exists and has a zero size.
#
# *file_name* can be an IO object.
#
def self?.empty?: (String | IO file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.executable?(file_name) -> true or false
# -->
# Returns `true` if the named file is executable by the effective user and group
# id of this process. See eaccess(3).
#
# Windows does not support execute permissions separately from read permissions.
# On Windows, a file is only considered executable if it ends in .bat, .cmd,
# .com, or .exe.
#
# Note that some OS-level security features may cause this to return true even
# though the file is not executable by the effective user/group.
#
def self?.executable?: (String file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.executable_real?(file_name) -> true or false
# -->
# Returns `true` if the named file is executable by the real user and group id
# of this process. See access(3).
#
# Windows does not support execute permissions separately from read permissions.
# On Windows, a file is only considered executable if it ends in .bat, .cmd,
# .com, or .exe.
#
# Note that some OS-level security features may cause this to return true even
# though the file is not executable by the real user/group.
#
def self?.executable_real?: (String file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.exist?(file_name) -> true or false
# -->
# Return `true` if the named file exists.
#
# *file_name* can be an IO object.
#
# "file exists" means that stat() or fstat() system call is successful.
#
def self?.exist?: (String | IO file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.file?(file) -> true or false
# -->
# Returns `true` if the named `file` exists and is a regular file.
#
# `file` can be an IO object.
#
# If the `file` argument is a symbolic link, it will resolve the symbolic link
# and use the file referenced by the link.
#
def self?.file?: (String | IO file) -> bool
# <!--
# rdoc-file=file.c
# - File.grpowned?(file_name) -> true or false
# -->
# Returns `true` if the named file exists and the effective group id of the
# calling process is the owner of the file. Returns `false` on Windows.
#
# *file_name* can be an IO object.
#
def self?.grpowned?: (String | IO file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.identical?(file_1, file_2) -> true or false
# -->
# Returns `true` if the named files are identical.
#
# *file_1* and *file_2* can be an IO object.
#
# open("a", "w") {}
# p File.identical?("a", "a") #=> true
# p File.identical?("a", "./a") #=> true
# File.link("a", "b")
# p File.identical?("a", "b") #=> true
# File.symlink("a", "c")
# p File.identical?("a", "c") #=> true
# open("d", "w") {}
# p File.identical?("a", "d") #=> false
#
def self?.identical?: (String | IO file_1, String | IO file_2) -> bool
# <!--
# rdoc-file=file.c
# - File.owned?(file_name) -> true or false
# -->
# Returns `true` if the named file exists and the effective used id of the
# calling process is the owner of the file.
#
# *file_name* can be an IO object.
#
def self?.owned?: (String | IO file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.pipe?(file_name) -> true or false
# -->
# Returns `true` if the named file is a pipe.
#
# *file_name* can be an IO object.
#
def self?.pipe?: (String | IO file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.readable?(file_name) -> true or false
# -->
# Returns `true` if the named file is readable by the effective user and group
# id of this process. See eaccess(3).
#
# Note that some OS-level security features may cause this to return true even
# though the file is not readable by the effective user/group.
#
def self?.readable?: (String file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.readable_real?(file_name) -> true or false
# -->
# Returns `true` if the named file is readable by the real user and group id of
# this process. See access(3).
#
# Note that some OS-level security features may cause this to return true even
# though the file is not readable by the real user/group.
#
def self?.readable_real?: (String file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.setgid?(file_name) -> true or false
# -->
# Returns `true` if the named file has the setgid bit set.
#
# *file_name* can be an IO object.
#
def self?.setgid?: (String | IO file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.setuid?(file_name) -> true or false
# -->
# Returns `true` if the named file has the setuid bit set.
#
# *file_name* can be an IO object.
#
def self?.setuid?: (String | IO file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.size(file_name) -> integer
# -->
# Returns the size of `file_name`.
#
# *file_name* can be an IO object.
#
def self?.size: (String | IO file_name) -> Integer
# <!--
# rdoc-file=file.c
# - File.size?(file_name) -> Integer or nil
# -->
# Returns `nil` if `file_name` doesn't exist or has zero size, the size of the
# file otherwise.
#
# *file_name* can be an IO object.
#
def self?.size?: (String | IO file_name) -> Integer?
# <!--
# rdoc-file=file.c
# - File.socket?(file_name) -> true or false
# -->
# Returns `true` if the named file is a socket.
#
# *file_name* can be an IO object.
#
def self?.socket?: (String | IO file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.sticky?(file_name) -> true or false
# -->
# Returns `true` if the named file has the sticky bit set.
#
# *file_name* can be an IO object.
#
def self?.sticky?: (String | IO file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.symlink?(file_name) -> true or false
# -->
# Returns `true` if the named file is a symbolic link.
#
def self?.symlink?: (String file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.world_readable?(file_name) -> integer or nil
# -->
# If *file_name* is readable by others, returns an integer representing the file
# permission bits of *file_name*. Returns `nil` otherwise. The meaning of the
# bits is platform dependent; on Unix systems, see `stat(2)`.
#
# *file_name* can be an IO object.
#
# File.world_readable?("/etc/passwd") #=> 420
# m = File.world_readable?("/etc/passwd")
# sprintf("%o", m) #=> "644"
#
def self?.world_readable?: (String | IO file_name) -> Integer?
# <!--
# rdoc-file=file.c
# - File.world_writable?(file_name) -> integer or nil
# -->
# If *file_name* is writable by others, returns an integer representing the file
# permission bits of *file_name*. Returns `nil` otherwise. The meaning of the
# bits is platform dependent; on Unix systems, see `stat(2)`.
#
# *file_name* can be an IO object.
#
# File.world_writable?("/tmp") #=> 511
# m = File.world_writable?("/tmp")
# sprintf("%o", m) #=> "777"
#
def self?.world_writable?: (String | IO file_name) -> Integer?
# <!--
# rdoc-file=file.c
# - File.writable?(file_name) -> true or false
# -->
# Returns `true` if the named file is writable by the effective user and group
# id of this process. See eaccess(3).
#
# Note that some OS-level security features may cause this to return true even
# though the file is not writable by the effective user/group.
#
def self?.writable?: (String file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.writable_real?(file_name) -> true or false
# -->
# Returns `true` if the named file is writable by the real user and group id of
# this process. See access(3).
#
# Note that some OS-level security features may cause this to return true even
# though the file is not writable by the real user/group.
#
def self?.writable_real?: (String file_name) -> bool
# <!--
# rdoc-file=file.c
# - File.zero?(file_name) -> true or false
# -->
# Returns `true` if the named file exists and has a zero size.
#
# *file_name* can be an IO object.
#
def self?.zero?: (String | IO file_name) -> bool
end
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