blob: 23c9645426e2bdc2d3eabf30087a324f896ec873 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
{ pkgs }:
let
escape = import ./escape.nix { inherit (pkgs) lib; };
# Write a list of execline argv parameters to an execline script.
# Everything is escaped correctly.
# TODO upstream into nixpkgs
writeExeclineCommon = writer: name: {
# "var": substitute readNArgs variables and start $@ from the (readNArgs+1)th argument
# "var-full": substitute readNArgs variables and start $@ from $0
# "env": don’t substitute, set # and 0…n environment vaariables, where n=$#
# "none": don’t substitute or set any positional arguments
# "env-no-push": like "env", but bypass the push-phase. Not recommended.
argMode ? "var",
# Number of arguments to be substituted as variables (passed to "var"/"-s" or "var-full"/"-S"
readNArgs ? 0,
}: argList:
let
env =
if argMode == "var" then "s${toString readNArgs}"
else if argMode == "var-full" then "S${toString readNArgs}"
else if argMode == "env" then ""
else if argMode == "none" then "P"
else if argMode == "env-no-push" then "p"
else abort ''"${toString argMode}" is not a valid argMode, use one of "var", "var-full", "env", "none", "env-no-push".'';
in writer name ''
#!${pkgs.execline}/bin/execlineb -W${env}
${escape.escapeExecline argList}
'';
writeExecline = writeExeclineCommon pkgs.writeScript;
writeExeclineBin = writeExeclineCommon pkgs.writeScriptBin;
in {
inherit writeExecline writeExeclineBin;
}
|