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lib.strings: Add function to convert character to number

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This commit is contained in:
Daniel Olsen 2022-06-11 11:18:54 +02:00
parent b7d8c68778
commit a08741ffbd
2 changed files with 111 additions and 0 deletions
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96
lib/ascii-table.nix Normal file
View file

@ -0,0 +1,96 @@
{ " " = 32;
"!" = 33;
"\"" = 34;
"#" = 35;
"$" = 36;
"%" = 37;
"&" = 38;
"'" = 39;
"(" = 40;
")" = 41;
"*" = 42;
"+" = 43;
"," = 44;
"-" = 45;
"." = 46;
"/" = 47;
"0" = 48;
"1" = 49;
"2" = 50;
"3" = 51;
"4" = 52;
"5" = 53;
"6" = 54;
"7" = 55;
"8" = 56;
"9" = 57;
":" = 58;
";" = 59;
"<" = 60;
"=" = 61;
">" = 62;
"?" = 63;
"@" = 64;
"A" = 65;
"B" = 66;
"C" = 67;
"D" = 68;
"E" = 69;
"F" = 70;
"G" = 71;
"H" = 72;
"I" = 73;
"J" = 74;
"K" = 75;
"L" = 76;
"M" = 77;
"N" = 78;
"O" = 79;
"P" = 80;
"Q" = 81;
"R" = 82;
"S" = 83;
"T" = 84;
"U" = 85;
"V" = 86;
"W" = 87;
"X" = 88;
"Y" = 89;
"Z" = 90;
"[" = 91;
"\\" = 92;
"]" = 93;
"^" = 94;
"_" = 95;
"`" = 96;
"a" = 97;
"b" = 98;
"c" = 99;
"d" = 100;
"e" = 101;
"f" = 102;
"g" = 103;
"h" = 104;
"i" = 105;
"j" = 106;
"k" = 107;
"l" = 108;
"m" = 109;
"n" = 110;
"o" = 111;
"p" = 112;
"q" = 113;
"r" = 114;
"s" = 115;
"t" = 116;
"u" = 117;
"v" = 118;
"w" = 119;
"x" = 120;
"y" = 121;
"z" = 122;
"{" = 123;
"|" = 124;
"}" = 125;
"~" = 126;
}

15
lib/strings.nix
View file

@ -294,6 +294,21 @@ rec {
map f (stringToCharacters s) map f (stringToCharacters s)
); );
/* Convert char to ascii value, must be in printable range
Type: charToInt :: string -> int
Example:
charToInt "A"
=> 65
charToInt "("
=> 40
*/
charToInt = let
table = import ./ascii-table.nix;
in c: builtins.getAttr c table;
/* Escape occurrence of the elements of `list` in `string` by /* Escape occurrence of the elements of `list` in `string` by
prefixing it with a backslash. prefixing it with a backslash.