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strings: add escapeQuery for url encoding
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@ -1,4 +1,7 @@
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{ " " = 32;
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{ "\t" = 9;
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"\n" = 10;
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"\r" = 13;
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" " = 32;
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"!" = 33;
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"\"" = 34;
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"#" = 35;
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@ -100,7 +100,7 @@ let
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escapeShellArg escapeShellArgs
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isStorePath isStringLike
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isValidPosixName toShellVar toShellVars
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escapeRegex escapeXML replaceChars lowerChars
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escapeRegex escapeURL escapeXML replaceChars lowerChars
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upperChars toLower toUpper addContextFrom splitString
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removePrefix removeSuffix versionOlder versionAtLeast
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getName getVersion
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@ -34,6 +34,8 @@ rec {
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unsafeDiscardStringContext
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;
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asciiTable = import ./ascii-table.nix;
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/* Concatenate a list of strings.
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Type: concatStrings :: [string] -> string
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@ -327,9 +329,7 @@ rec {
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=> 40
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*/
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charToInt = let
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table = import ./ascii-table.nix;
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in c: builtins.getAttr c table;
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charToInt = c: builtins.getAttr c asciiTable;
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/* Escape occurrence of the elements of `list` in `string` by
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prefixing it with a backslash.
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@ -355,6 +355,21 @@ rec {
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*/
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escapeC = list: replaceStrings list (map (c: "\\x${ toLower (lib.toHexString (charToInt c))}") list);
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/* Escape the string so it can be safely placed inside a URL
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query.
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Type: escapeURL :: string -> string
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Example:
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escapeURL "foo/bar baz"
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=> "foo%2Fbar%20baz"
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*/
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escapeURL = let
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unreserved = [ "A" "B" "C" "D" "E" "F" "G" "H" "I" "J" "K" "L" "M" "N" "O" "P" "Q" "R" "S" "T" "U" "V" "W" "X" "Y" "Z" "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "r" "s" "t" "u" "v" "w" "x" "y" "z" "0" "1" "2" "3" "4" "5" "6" "7" "8" "9" "-" "_" "." "~" ];
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toEscape = builtins.removeAttrs asciiTable unreserved;
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in
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replaceStrings (builtins.attrNames toEscape) (lib.mapAttrsToList (_: c: "%${fixedWidthString 2 "0" (lib.toHexString c)}") toEscape);
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/* Quote string to be used safely within the Bourne shell.
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Type: escapeShellArg :: string -> string
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@ -347,6 +347,15 @@ runTests {
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expected = "Hello\\x20World";
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};
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testEscapeURL = testAllTrue [
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("" == strings.escapeURL "")
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("Hello" == strings.escapeURL "Hello")
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("Hello%20World" == strings.escapeURL "Hello World")
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("Hello%2FWorld" == strings.escapeURL "Hello/World")
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("42%25" == strings.escapeURL "42%")
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("%20%3F%26%3D%23%2B%25%21%3C%3E%23%22%7B%7D%7C%5C%5E%5B%5D%60%09%3A%2F%40%24%27%28%29%2A%2C%3B" == strings.escapeURL " ?&=#+%!<>#\"{}|\\^[]`\t:/@$'()*,;")
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];
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testToInt = testAllTrue [
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# Naive
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(123 == toInt "123")
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