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lib: add shell.quote

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tv 2018-07-12 14:14:47 +02:00
parent e8505f71ff
commit 50868155fd
1 changed files with 10 additions and 0 deletions
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10
lib/default.nix
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@ -51,6 +51,16 @@ let {
path = default "/var/src" /* no default? */ (elemAt' parse 6);
};
shell = let
isSafeChar = lib.testString "[-+./0-9:=A-Z_a-z]";
quoteChar = c:
if isSafeChar c then c
else if c == "\n" then "'\n'"
else "\\${c}";
in {
quote = x: if x == "" then "''" else lib.stringAsChars quoteChar x;
};
test = re: x: lib.isString x && lib.testString re x;
testString = re: x: lib.match re x != null;