@technobuddha/library
Version:
A large library of useful functions
44 lines (43 loc) • 1.34 kB
JavaScript
/**
* Unescape a string encoded in Python style
*
* @param input The string to unescape
* @returns the string with escapes resolved
*/
export function unescapePython(input) {
return input.replace(
// cspell:disable-next-line
/\\(([abfnrtv"'\\])|([0-7]{1,3})|(x[0-9a-fA-F]+)|(U[0-9a-fA-F]{8})|(u[0-9a-fA-F]{4})|(N\[.*\])|.)/ug, escape => {
const c = escape.charAt(1);
if (c === 'a')
return '\x07';
if (c === 'b')
return '\b';
if (c === 'f')
return '\f';
if (c === 'n')
return '\n';
if (c === 'r')
return '\r';
if (c === 't')
return '\t';
if (c === 'v')
return '\v';
if (c === '"')
return '"';
if (c === '\'')
return '\'';
if (c === '\\')
return '\\';
if (c === 'N')
throw new Error('N escape is not supported.');
if (c >= '0' && c <= '7')
return String.fromCharCode(Number.parseInt(escape, 8));
if (c === 'x')
return String.fromCharCode(Number.parseInt(escape.slice(2), 16));
if (c === 'U' || c === 'u')
return String.fromCharCode(Number.parseInt(escape.slice(2), 16));
return escape;
});
}
export default unescapePython;