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import
future, hashes, options, os, osproc, posix, strutils, tables
type
HaltError* = object of Exception
code*: int
CommandError* = object of Exception
color*: Option[bool]
error*: bool
const
pkgLibDir* = getenv("PROG_PKGLIBDIR")
localStateDir* = getenv("PROG_LOCALSTATEDIR")
sysConfDir* = getenv("PROG_SYSCONFDIR")
bashCmd* = "/bin/bash"
suCmd* = "/usr/bin/su"
sudoCmd* = "/usr/bin/sudo"
gitCmd* = "/usr/bin/git"
pacmanCmd* = "/usr/bin/pacman"
makepkgCmd* = "/usr/bin/makepkg"
template haltError*(code: int): untyped =
var e: ref HaltError
new(e)
e.code = code
e
template commandError*(message: string, colorNeeded: Option[bool] = none(bool),
showError: bool = true): untyped =
var e: ref CommandError
new(e)
e.msg = message
e.color = colorNeeded
e.error = showError
e
iterator items*[T](self: Option[T]): T {.raises: [].} =
if self.isSome:
yield self.unsafeGet
template len*[T](self: Option[T]): int =
if self.isSome: 1 else: 0
template orElse*[T, R](opt1: Option[T], opt2: Option[R]): Option[R] =
if opt1.isSome: opt1 else: opt2
template hash*[T](opt: Option[T]): int =
opt.map(hash).get(0)
proc opt*[K, V](table: Table[K, V], key: K): Option[V] =
if table.hasKey(key): some(table[key]) else: none(V)
proc opt*[K, V](table: OrderedTable[K, V], key: K): Option[V] =
if table.hasKey(key): some(table[key]) else: none(V)
proc optFirst*[T](s: openArray[T]): Option[T] =
if s.len > 0: some(s[s.low]) else: none(T)
proc optLast*[T](s: openArray[T]): Option[T] =
if s.len > 0: some(s[s.high]) else: none(T)
iterator enumerate*[T: enum]: T =
let elow = T.low.ord
let ehigh = T.high.ord
for i in elow .. ehigh:
yield T(i)
template namedPairsTyped(T: typedesc) =
iterator namedPairs*[K, V](table: T[K, V]): tuple[key: K, value: V] =
for key, value in table.pairs:
yield (key, value)
namedPairsTyped(Table)
namedPairsTyped(OrderedTable)
iterator reversed*[T](s: openArray[T]): T =
for i in countdown(s.len - 1, 0):
yield s[i]
proc groupBy*[T, X](s: seq[T], callback: T -> X): seq[tuple[key: X, values: seq[T]]] =
var table = initOrderedTable[X, ref seq[T]]()
for value in s:
let key = callback(value)
var work: ref seq[T]
if table.hasKey(key):
work = table[key]
else:
new(work)
work[] = newSeq[T]()
table[key] = work
work[] &= value
result = newSeq[tuple[key: X, values: seq[T]]]()
for key, values in table.pairs:
result &= (key, values[])
proc perror*(s: cstring): void {.importc, header: "<stdio.h>".}
template perror*: void = perror(getAppFilename())
proc execResult*(args: varargs[string]): int =
let cexec = allocCStringArray(args)
let code = execvp(cexec[0], cexec)
perror()
deallocCStringArray(cexec)
code
const
interruptSignals* = [SIGINT, SIGTERM]
template blockSignals*(signals: openArray[cint],
unblock: untyped, body: untyped): untyped =
block:
var sigset: Sigset
var sigoldset: Sigset
discard sigemptyset(sigset)
for s in signals:
discard sigaddset(sigset, s)
discard sigprocmask(SIG_BLOCK, sigset, sigoldset)
var unblocked = false
let unblock = () => (block:
if not unblocked:
discard sigprocmask(SIG_SETMASK, sigoldset, sigset)
unblocked = true)
try:
body
finally:
unblock()
proc forkWait*(call: () -> int): int =
blockSignals(interruptSignals, unblock):
let pid = fork()
if pid == 0:
unblock()
quit(call())
else:
var status: cint = 1
discard waitpid(pid, status, 0)
if WIFEXITED(status):
return WEXITSTATUS(status)
else:
discard kill(getpid(), status)
return 1
proc runProgram*(args: varargs[string]): seq[string] =
let output = execProcess(args[0], @args[1 .. ^1], options = {})
if output.len == 0:
@[]
elif output.len > 0 and $output[^1] == "\n":
output[0 .. ^2].split("\n")
else:
output.split("\n")
proc setenv*(name: cstring, value: cstring, override: cint): cint
{.importc, header: "<stdlib.h>".}
proc getUser*: (int, string) =
let uid = getuid()
while true:
var pw = getpwent()
if pw == nil:
raise newException(SystemError, "")
if pw.pw_uid == uid:
return (uid.int, $pw.pw_name)
proc toString*[T](arr: array[T, char], length: Option[int]): string =
var workLength = length.get(T.high + 1)
var str = newStringOfCap(workLength)
for i in 0 .. workLength - 1:
let c = arr[i]
if length.isNone and c == '\0':
break
str.add(arr[i])
str
proc removeDirQuiet*(s: string) =
try:
removeDir(s)
except:
discard
const bashSpecialCharacters = " \t\"'`()[]{}#&|;!\\*~<>?"
proc bashEscape*(s: string): string =
result = ""
for c in s:
if c in bashSpecialCharacters:
result &= "\\" & c
elif c == "\n"[0]:
result &= "$'\\n'"
elif c.cuint < 0x20.cuint or c.cuint > 0x80.cuint:
result &= "$'\\0x" & c.toHex & "'"
else:
result &= c
proc dgettext(domain: cstring, s: cstring): cstring
{.cdecl, importc: "dgettext".}
proc gettext(domain: string, s: string): string =
let translated = dgettext(domain, s)
if translated != nil: $translated else: s
proc gettextHandle(domain: string, s: string): string =
let res = gettext(domain, s).replace("%s", "$#").replace("%c", "$#")
if res.len > 0 and res[^1 .. ^1] == "\n": res[0 .. ^2] else: res
template tr*(s: string): string =
gettext("pakku", s)
template trp*(s: string): string =
gettextHandle("pacman", s)
template tra*(s: string): string =
gettextHandle("libalpm", s)
template trc*(s: string): string =
gettextHandle("libc", s)
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