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# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Utils do
@posix_error_codes ~w(
eacces eagain ebadf ebadmsg ebusy edeadlk edeadlock edquot eexist efault
efbig eftype eintr einval eio eisdir eloop emfile emlink emultihop
enametoolong enfile enobufs enodev enolck enolink enoent enomem enospc
enosr enostr enosys enotblk enotdir enotsup enxio eopnotsupp eoverflow
eperm epipe erange erofs espipe esrch estale etxtbsy exdev
)a
def compile_dir(dir) when is_binary(dir) do
dir
|> File.ls!()
|> Enum.map(&Path.join(dir, &1))
|> Kernel.ParallelCompiler.compile()
end
@doc """
POSIX-compliant check if command is available in the system
## Examples
iex> command_available?("git")
true
iex> command_available?("wrongcmd")
false
"""
@spec command_available?(String.t()) :: boolean()
def command_available?(command) do
case :os.find_executable(String.to_charlist(command)) do
false -> false
_ -> true
end
end
@doc "creates the uniq temporary directory"
@spec tmp_dir(String.t()) :: {:ok, String.t()} | {:error, :file.posix()}
def tmp_dir(prefix \\ "") do
sub_dir =
[
prefix,
Timex.to_unix(Timex.now()),
:os.getpid(),
String.downcase(Integer.to_string(:rand.uniform(0x100000000), 36))
]
|> Enum.join("-")
tmp_dir = Path.join(System.tmp_dir!(), sub_dir)
case File.mkdir(tmp_dir) do
:ok -> {:ok, tmp_dir}
error -> error
end
end
@spec posix_error_message(atom()) :: binary()
def posix_error_message(code) when code in @posix_error_codes do
error_message = Gettext.dgettext(Pleroma.Web.Gettext, "posix_errors", "#{code}")
"(POSIX error: #{error_message})"
end
def posix_error_message(_), do: ""
end
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