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app "roctorrent"
packages { pf: "https://github.com/roc-lang/basic-cli/releases/download/0.5.0/Cufzl36_SnJ4QbOoEmiJ5dIpUxBvdB3NEySvuH82Wio.tar.br" }
imports [pf.Stdout]
provides [main] to pf
bDecodeStr: List U8 -> Result (List U8) [Malformatted]
bDecodeStr = \i ->
when (List.splitFirst i ':') is
Ok {before, after} ->
when (Str.fromUtf8 before) is
Ok ls ->
when (Str.toU32 ls) is
Ok l ->
if Num.toU32 (List.len after) == l then
Ok after
else
Err Malformatted
Err _err -> Err Malformatted
Err _err -> Err Malformatted
Err _err -> Err Malformatted
expect
res = bDecodeStr (Str.toUtf8 "3:foo")
res == Ok (Str.toUtf8 "foo")
expect
errCases = [
"",
"foo",
"1:foo",
"4:foo",
":",
"foo:",
"1:",
"::",
]
List.all errCases \t ->
res = bDecodeStr (Str.toUtf8 t)
res == Err Malformatted
bDecodeNum: List U8 -> Result I64 [Malformatted]
bDecodeNum = \i ->
when i is
['i', .., 'e'] ->
ii = List.sublist i {start: 1, len: ((List.len i) - 2)}
when (Str.fromUtf8 ii) is
Ok iii ->
when (Str.toI64 iii) is
Ok res -> Ok res
Err _err -> Err Malformatted
Err _err -> Err Malformatted
_ -> Err Malformatted
expect
res = bDecodeNum (Str.toUtf8 "i32e")
res == Ok 32i64
expect
errCases = [
"",
"foo",
"i32",
"32e",
"ifooe",
"ie",
"i",
"e",
"i522222222222222222343423432434322e",
]
List.all errCases \t ->
res = bDecodeNum (Str.toUtf8 t)
res == Err Malformatted
main =
Stdout.line "Hello, World"
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