elvish_config/aliases/random.elv

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use str
use re
fn -bytes [begin size]{
str:from-codepoints (range $begin (+ $begin $size))
}
fn -upper []{
-bytes 0x41 26
}
fn -lower []{
-bytes 0x61 26
}
fn -digit []{
-bytes 0x30 10
}
fn -j [@strings]{
str:join '' $strings
}
fn -alpha []{
-j (-upper) (-lower)
}
fn -alphanum []{
-j (-alpha) (-digit)
}
fn -random [chars]{
var size = (count $chars)
print $chars[(randint 0 $size)]
}
fn -is-int [arg]{
re:match '^\d+$' $arg
}
fn -help []{
echo 'Génère une chaîne de caractères aléatoires'
echo 'Usage: genstr [(-auldh)] [<chars>] [<size>]'
echo ''
echo 'Options:'
echo ' -a Uniquement des lettres ([A-Za-z])'
echo ' -u Uniquement des lettres majuscules ([A-Z])'
echo ' -l Uniquement des lettres minuscules ([a-z])'
echo ' -d Uniquement des chiffres ([0-9])'
echo ''
echo '<chars> Liste de caractères possibles'
echo '<size> Longueur de la chaîne (par défaut: 10)'
echo ''
echo 'Si aucune classe de caractères ou liste de caractères nest fournie, utilise les caractères alphanumériques ([A-Za-z0-9]).'
}
edit:add-var genstr~ [@args]{
var len chars h = 0 '' $false
each [e]{
if (or (eq $e -h) (eq $e --help)) {
set h = $true
-help
break
} elif (eq $e -a) {
set chars = (-j $chars (-alpha))
} elif (eq $e -u) {
set chars = (-j $chars (-upper))
} elif (eq $e -l) {
set chars = (-j $chars (-lower))
} elif (eq $e -d) {
set chars = (-j $chars (-digit))
} elif (and (-is-int $e) (> $e 0)) {
set len = $e
} else {
set chars = (-j $chars $e)
}
} $args
if (not $h) {
if (== $len 0) {
set len = 10
}
if (eq $chars '') {
set chars = (-alphanum)
}
set chars = [(str:split '' $chars)]
range $len | each [_]{
-random $chars
}
echo
}
}