slashes

Add or strip backslashes.

Provides two methods, add and strip which are identical to PHP's addslashes and stripslashes functions respectively.

The add method will prefix backslash (\), double quote ("), and single quote (') characters with backslashes. Null (\0) characters will be replaced with backslash zero "\\0".

The strip method replaces all sequences of two characters that start with a backslash, with the second character in the sequence. There are two caveats. A single non-escaped slash at the end of the string will be removed. Backslash zero "\\0" will become a null (\0) character.

Install

npm install slashes --save

Usage

slashes.add(string, [number])
slashes.strip(string, [number])

If a non-string value is passed as the first parameter, it will be coerced to a string.

If a non-number is passed as the second parameter, it will be coerced to a number. Negative numbers are equivalent to their positive counter parts. Zero is the same as one.

Examples

var slashes = require('slashes');

var test = "'test'\n\"ing\"\0";
var added = slashes.add(test);
var stripped = slashes.strip(added);

console.log("test:\n%s\n", test);
console.log("added:\n%s\n", added);
console.log("stripped:\n%s\n", stripped);

Output should be...

test:
'test'
"ing"

added:
\'test\'
\"ing\"\0

stripped:
'test'
"ing"

Both methods also take an optional second number parameter, 1 or greater. This is equivalent to calling the method that many times.

slashes.add(string, 2);
// ...is the same as...
slashes.add(slashes.add(string));

slashes.strip(string, 2);
// ...is the same as...
slashes.strip(slashes.strip(string));

Note that in JavaScript, "\0" and "\u0000" are identical. The add method will convert both to "\\0".