Some useful functions built on top of Unix.
status: unstable
type 'a or_error = ('a, string) Result.resulttype call_result =
< stdout : string
; stderr : string
; status : Unix.process_status
; errcode : int >val call_full :
?bufsize:int ->
?stdin:[ `Gen of string gen | `Str of string ] ->
?env:string array ->
('a, Buffer.t, unit, call_result) format4 ->
'acall_full cmd wraps the result of Unix.open_process_full cmd into an object. It reads the full stdout and stderr of the subprocess before returning.
val call :
?bufsize:int ->
?stdin:[ `Gen of string gen | `Str of string ] ->
?env:string array ->
('a, Buffer.t, unit, string * string * int) format4 ->
'acall cmd is similar to call_full cmd but returns a tuple stdout, stderr, errcode instead of an object.
type async_call_result =
< stdout : line gen
; stderr : line gen
; stdin : line -> unit
; close_in : unit
; close_err : unit
; close_out : unit
; close_all : unit
; wait : Unix.process_status
; wait_errcode : int >A subprocess for interactive usage (read/write channels line by line)
val async_call :
?env:string array ->
('a, Buffer.t, unit, async_call_result) format4 ->
'aSpawns a subprocess, like call, but the subprocess's channels are line generators and line sinks (for stdin). if p is async_call "cmd", then p#wait waits for the subprocess to die. Channels can be closed independently.
val with_in :
?mode:int ->
?flags:Unix.open_flag list ->
string ->
f:(in_channel -> 'a) ->
'aOpen an input file with the given optional flag list, calls the function on the input channel. When the function raises or returns, the channel is closed.
val with_out :
?mode:int ->
?flags:Unix.open_flag list ->
string ->
f:(out_channel -> 'a) ->
'aSame as with_in but for an output channel
val with_process_in : string -> f:(in_channel -> 'a) -> 'aOpen a subprocess and obtain a handle to its stdout
CCUnix.with_process_in "ls /tmp" ~f:CCIO.read_lines_l;;val with_process_out : string -> f:(out_channel -> 'a) -> 'aOpen a subprocess and obtain a handle to its stdin
type process_full =
< stdin : out_channel
; stdout : in_channel
; stderr : in_channel
; close : Unix.process_status >Handle to a subprocess.
val with_process_full :
?env:string array ->
string ->
f:(process_full -> 'a) ->
'aOpen a subprocess and obtain a handle to its channels.
val with_connection :
Unix.sockaddr ->
f:(in_channel -> out_channel -> 'a) ->
'aWrap Unix.open_connection with a handler
val establish_server :
Unix.sockaddr ->
f:(in_channel -> out_channel -> _) ->
unitListen on the address and calls the handler in a blocking fashion. Using Thread is recommended if handlers might take time. The callback should raise ExitServer to stop the loop.
with_file_lock ~kind filename f puts a lock on the offset 0 of the file named filename, calls f and returns its result after the file is unlocked. If f () raises an exception the exception is re-raised after the file is unlocked.
module Infix : sig ... endinclude module type of Infixval (?|) : ('a, Buffer.t, unit, call_result) format4 -> 'aInfix version of call
val (?|&) : ('a, Buffer.t, unit, async_call_result) format4 -> 'aInfix version of async_call