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(.module:
[lux #*
["@" target]
["." host (#+ import:)]
[abstract
["." monad (#+ do)]]
[control
["." function]
["." io (#+ IO)]
["." try]
[concurrency
["." atom]
["." promise (#+ Promise)]]
[parser
["." environment (#+ Environment)]]]
[data
["." maybe]
["." text
["%" format (#+ format)]]
[collection
["." array (#+ Array) ("#\." fold)]
["." dictionary (#+ Dictionary)]]]
[math
[number
["i" int]]]]
[//
[file (#+ Path)]
[shell (#+ Exit)]])
(signature: #export (Program !)
(: (-> Any (! Environment))
environment)
(: (-> Any (! Path))
home)
(: (-> Any (! Path))
directory)
(: (-> Exit (! Nothing))
exit))
(def: #export (async program)
(-> (Program IO) (Program Promise))
(structure
(def: environment
(|>> (\ program environment) promise.future))
(def: home
(|>> (\ program home) promise.future))
(def: directory
(|>> (\ program directory) promise.future))
(def: exit
(|>> (\ program exit) promise.future))))
(def: #export (mock environment home directory)
(-> Environment Path Path (Program IO))
(let [@dead? (atom.atom false)]
(structure
(def: environment
(function.constant (io.io environment)))
(def: home
(function.constant (io.io home)))
(def: directory
(function.constant (io.io directory)))
(def: (exit code)
(io.io (error! (%.int code)))))))
## Do not trust the values of environment variables
## https://wiki.sei.cmu.edu/confluence/display/java/ENV02-J.+Do+not+trust+the+values+of+environment+variables
(with_expansions [<jvm> (as_is (import: java/lang/String)
(import: (java/util/Map$Entry k v)
["#::."
(getKey [] k)
(getValue [] v)])
(import: (java/util/Iterator a)
["#::."
(hasNext [] boolean)
(next [] a)])
(import: (java/util/Set a)
["#::."
(iterator [] (java/util/Iterator a))])
(import: (java/util/Map k v)
["#::."
(entrySet [] (java/util/Set (java/util/Map$Entry k v)))])
(import: java/lang/System
["#::."
(#static getenv [] (java/util/Map java/lang/String java/lang/String))
(#static getProperty [java/lang/String] #? java/lang/String)
(#static exit [int] #io void)])
(def: (jvm\\consume f iterator)
(All [a b] (-> (-> a b) (java/util/Iterator a) (List b)))
(if (java/util/Iterator::hasNext iterator)
(#.Cons (f (java/util/Iterator::next iterator))
(jvm\\consume f iterator))
#.Nil))
(def: (jvm\\to_kv entry)
(All [k v] (-> (java/util/Map$Entry k v) [k v]))
[(java/util/Map$Entry::getKey entry)
(java/util/Map$Entry::getValue entry)])
(def: jvm\\environment
(IO Environment)
(with_expansions [<jvm> (as_is (io.io (|> (java/lang/System::getenv)
java/util/Map::entrySet
java/util/Set::iterator
(..jvm\\consume ..jvm\\to_kv)
(dictionary.from_list text.hash))))]
(for {@.old <jvm>
@.jvm <jvm>})))
)]
(for {@.old (as_is <jvm>)
@.jvm (as_is <jvm>)
@.js (as_is (def: default_exit!
(-> Exit (IO Nothing))
(|>> %.int error! io.io))
(import: NodeJs_Process
(exit [host.Number] #io Nothing)
(cwd [] #io Path))
(def: (exit_node_js! code)
(-> Exit (IO Nothing))
(case (host.constant ..NodeJs_Process [process])
(#.Some process)
(NodeJs_Process::exit (i.frac code) process)
#.None
(..default_exit! code)))
(import: Browser_Window
(close [] Nothing))
(import: Browser_Location
(reload [] Nothing))
(def: (exit_browser! code)
(-> Exit (IO Nothing))
(case [(host.constant ..Browser_Window [window])
(host.constant ..Browser_Location [location])]
[(#.Some window) (#.Some location)]
(exec
(Browser_Window::close [] window)
(Browser_Location::reload [] location)
(..default_exit! code))
[(#.Some window) #.None]
(exec
(Browser_Window::close [] window)
(..default_exit! code))
[#.None (#.Some location)]
(exec
(Browser_Location::reload [] location)
(..default_exit! code))
[#.None #.None]
(..default_exit! code)))
(import: Object
(#static entries [Object] (Array (Array host.String))))
(import: NodeJs_OS
(homedir [] #io Path))
(import: (require [host.String] Any)))
@.python (as_is (import: os
(#static getcwd [] #io host.String))
(import: os/path
(#static expanduser [host.String] #io host.String))
(import: os/environ
(#static keys [] #io (Array host.String))
(#static get [host.String] #io host.String))
(import: sys
(#static exit [host.Integer] #io Nothing)))
@.lua (as_is (host.import: LuaFile
(read [host.String] #io #? host.String)
(close [] #io host.Boolean))
(host.import: (io/popen [host.String] #io #try #? LuaFile))
(host.import: (os/getenv [host.String] #io #? host.String))
(host.import: (os/exit [host.Integer] #io Nothing))
(def: (run_command default command)
(-> Text Text (IO Text))
(do {! io.monad}
[outcome (io/popen [command])]
(case outcome
(#try.Success outcome)
(case outcome
(#.Some file)
(do !
[?output (LuaFile::read ["*l"] file)
_ (LuaFile::close [] file)]
(wrap (maybe.default default ?output)))
#.None
(wrap default))
(#try.Failure _)
(wrap default)))))}
(as_is)))
(structure: #export default
(Program IO)
(def: (environment _)
(with_expansions [<jvm> ..jvm\\environment]
(for {@.old <jvm>
@.jvm <jvm>
@.js (io.io (if host.on_node_js?
(case (host.constant Object [process env])
(#.Some process/env)
(array\fold (function (_ entry environment)
(<| (maybe.default environment)
(do maybe.monad
[variable (array.read 0 entry)
value (array.read 1 entry)]
(wrap (dictionary.put variable value environment)))))
environment.empty
(Object::entries [process/env]))
#.None
(undefined))
environment.empty))
@.python (do {! io.monad}
[keys (os/environ::keys [])]
(monad.fold ! (function (_ variable environment)
(do !
[value (os/environ::get [variable])]
(wrap (dictionary.put variable value environment))))
environment.empty
(array.to_list keys)))}
## TODO: Replace dummy implementation.
(io.io environment.empty))))
(def: (home _)
(with_expansions [<default> (io.io "~")
<jvm> (io.io (maybe.default "" (java/lang/System::getProperty "user.home")))]
(for {@.old <jvm>
@.jvm <jvm>
@.js (if host.on_node_js?
(|> (..require "os")
(:coerce NodeJs_OS)
(NodeJs_OS::homedir []))
<default>)
@.python (os/path::expanduser ["~"])
@.lua (..run_command "~" "echo ~")}
## TODO: Replace dummy implementation.
<default>)))
(def: (directory _)
(with_expansions [<default> "."
<jvm> (io.io (maybe.default "" (java/lang/System::getProperty "user.dir")))]
(for {@.old <jvm>
@.jvm <jvm>
@.js (if host.on_node_js?
(case (host.constant ..NodeJs_Process [process])
(#.Some process)
(NodeJs_Process::cwd [] process)
#.None
(io.io <default>))
(io.io <default>))
@.python (os::getcwd [])
@.lua (do io.monad
[#let [default <default>]
on_windows (..run_command default "cd")]
(if (is? default on_windows)
(..run_command default "pwd")
(wrap on_windows)))}
## TODO: Replace dummy implementation.
(io.io <default>))))
(def: (exit code)
(with_expansions [<jvm> (do io.monad
[_ (java/lang/System::exit code)]
(wrap (undefined)))]
(for {@.old <jvm>
@.jvm <jvm>
@.js (cond host.on_node_js?
(..exit_node_js! code)
host.on_browser?
(..exit_browser! code)
## else
(..default_exit! code))
@.python (sys::exit code)
@.lua (os/exit [code])}))))
|
