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/**
* Module dependencies.
*/
var sep = require('path').sep || '/';
/**
* Module exports.
*/
module.exports = fileUriToPath;
/**
* File URI to Path function.
*
* @param {String} uri
* @return {String} path
* @api public
*/
function fileUriToPath (uri) {
if ('string' != typeof uri ||
uri.length <= 7 ||
'file://' != uri.substring(0, 7)) {
throw new TypeError('must pass in a file:// URI to convert to a file path');
}
var rest = decodeURI(uri.substring(7));
var firstSlash = rest.indexOf('/');
var host = rest.substring(0, firstSlash);
var path = rest.substring(firstSlash + 1);
// 2. Scheme Definition
// As a special case, <host> can be the string "localhost" or the empty
// string; this is interpreted as "the machine from which the URL is
// being interpreted".
if ('localhost' == host) host = '';
if (host) {
host = sep + sep + host;
}
// 3.2 Drives, drive letters, mount points, file system root
// Drive letters are mapped into the top of a file URI in various ways,
// depending on the implementation; some applications substitute
// vertical bar ("|") for the colon after the drive letter, yielding
// "file:///c|/tmp/test.txt". In some cases, the colon is left
// unchanged, as in "file:///c:/tmp/test.txt". In other cases, the
// colon is simply omitted, as in "file:///c/tmp/test.txt".
path = path.replace(/^(.+)\|/, '$1:');
// for Windows, we need to invert the path separators from what a URI uses
if (sep == '\\') {
path = path.replace(/\//g, '\\');
}
if (/^.+\:/.test(path)) {
// has Windows drive at beginning of path
} else {
// unix path…
path = sep + path;
}
return host + path;
}