You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
1.3 KiB
52 lines
1.3 KiB
6 years ago
|
/*!
|
||
|
* strip-dirs | MIT (c) Shinnosuke Watanabe
|
||
|
* https://github.com/shinnn/node-strip-dirs
|
||
|
*/
|
||
|
'use strict';
|
||
|
|
||
|
var path = require('path');
|
||
|
|
||
|
var isAbsolutePath = require('is-absolute');
|
||
|
var isNaturalNumber = require('is-natural-number');
|
||
|
|
||
|
module.exports = function stripDirs(pathStr, count, option) {
|
||
|
option = option || {narrow: false};
|
||
|
|
||
|
if (arguments.length < 2) {
|
||
|
throw new Error('strip-dirs requires two arguments and more. (path, count[, option])');
|
||
|
}
|
||
|
|
||
|
if (typeof pathStr !== 'string') {
|
||
|
throw new TypeError(
|
||
|
pathStr +
|
||
|
' is not a string. First argument to strip-dirs must be a path string.'
|
||
|
);
|
||
|
}
|
||
|
if (isAbsolutePath(pathStr)) {
|
||
|
throw new TypeError(
|
||
|
pathStr +
|
||
|
' is an absolute path. strip-dirs requires a relative path.'
|
||
|
);
|
||
|
}
|
||
|
|
||
|
if (!isNaturalNumber(count, true)) {
|
||
|
throw new Error(
|
||
|
'Second argument to strip-dirs must be a natural number or 0.'
|
||
|
);
|
||
|
}
|
||
|
|
||
|
var pathComponents = path.normalize(pathStr).split(path.sep);
|
||
|
if (pathComponents.length > 1 && pathComponents[0] === '.') {
|
||
|
pathComponents.shift();
|
||
|
}
|
||
|
|
||
|
if (count > pathComponents.length - 1) {
|
||
|
if (option.narrow) {
|
||
|
throw new RangeError('Cannot strip more directories than there are.');
|
||
|
}
|
||
|
count = pathComponents.length - 1;
|
||
|
}
|
||
|
|
||
|
return path.join.apply(null, pathComponents.slice(count));
|
||
|
};
|