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enhance escapeShellArg funtion. It should be pretty correct now 

svn path=/nixpkgs/trunk/; revision=15475
This commit is contained in:
Marc Weber 2009-05-06 16:06:41 +00:00
parent 16ca65b0c2
commit 8cc8965379
1 changed files with 8 additions and 5 deletions
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13
pkgs/lib/strings.nix
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@ -66,11 +66,14 @@ rec {
else [(substring 0 1 s)] ++ stringToCharacters (substring 1 (builtins.sub l 1) s);
# !!! this function seems broken - it doesn't escape all special
# characters, and in any case this should be done in a builder.
escapeShellArg = s:
let escapeChar = x: if x == "'" then "'\"'\"'" else x;
in "'" + concatStrings (map escapeChar (stringToCharacters s)) + "'";
# same as vim escape function.
# Each character contained in list is prefixed by "\"
escape = list : string :
lib.concatStrings (map (c: if lib.elem c list then "\\${c}" else c) (stringToCharacters string));
# still ugly slow. But more correct now
# [] for zsh
escapeShellArg = lib.escape (stringToCharacters "\\ ';$`()|<>\t*[]");
# !!! what is this for?