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{ pkgs, lib, writeExecline, getBins, runInEmptyEnv }:
let
bins = getBins pkgs.hello [ "hello" ]
// getBins pkgs.coreutils [ "echo" "env" "cat" "printf" "wc" "tr" ]
// getBins pkgs.youtube-dl [ "youtube-dl" ]
// getBins pkgs.s6-networking [ "s6-tcpserver" ]
// getBins pkgs.execline [ "fdmove" "backtick" "importas" "if" "redirfd" "pipeline" ];
youtube-dl-audio = writeExecline "abc" { readNArgs = 1; } [
bins.youtube-dl
"--extract-audio"
"--audio-format" "opus"
"--output" "\${1}/audio.opus" "https://www.youtube.com/watch?v=5Opw5oR2LDY"
];
# minimal CGI request parser for use as UCSPI middleware
yolo-cgi = pkgs.writers.writePython3 "yolo-cgi" {} ''
import sys
import os
def parse_ass(bool):
if not bool:
sys.exit(1)
inbuf = sys.stdin.buffer
first_line = inbuf.readline().split(sep=b" ")
parse_ass(len(first_line) == 3)
parse_ass(first_line[2].startswith(b"HTTP/"))
os.environb[b"REQUEST_METHOD"] = first_line[0]
os.environb[b"REQUEST_URI"] = first_line[1]
cmd = sys.argv[1]
args = sys.argv[2:] if len(sys.argv) > 2 else []
os.execlp(cmd, cmd, *args)
'';
serve-audio = writeExecline "audio-server" {} [
(runInEmptyEnv [])
bins.s6-tcpserver "::1" "8888"
yolo-cgi
# bins.fdmove "1" "2" bins.env
bins.${"if"} [
bins.fdmove "1" "2"
youtube-dl-audio "tmpdir"
]
bins.backtick "-i" "-n" "filesize" [
bins.redirfd "-r" "0" "tmpdir/audio.opus"
bins.wc "--bytes"
]
bins.importas "filesize" "filesize"
bins.${"if"} [ bins.printf ''
HTTP/1.1 200 OK
Content-Type: audio/ogg
Content-Length: %u
'' "$filesize" ]
bins.redirfd "-r" "0" "tmpdir/audio.opus" bins.cat
];
# in printFeed
in serve-audio
# in youtube-dl-audio
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