aaac7fed
 liuqimichale
add
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var fs = require('fs');
var common = require('./common');
common.register('cd', _cd, {});
//@
//@ ### cd([dir])
//@ Changes to directory `dir` for the duration of the script. Changes to home
//@ directory if no argument is supplied.
function _cd(options, dir) {
if (!dir) dir = common.getUserHome();
if (dir === '-') {
if (!process.env.OLDPWD) {
common.error('could not find previous directory');
} else {
dir = process.env.OLDPWD;
}
}
try {
var curDir = process.cwd();
process.chdir(dir);
process.env.OLDPWD = curDir;
} catch (e) {
// something went wrong, let's figure out the error
var err;
try {
fs.statSync(dir); // if this succeeds, it must be some sort of file
err = 'not a directory: ' + dir;
} catch (e2) {
err = 'no such file or directory: ' + dir;
}
if (err) common.error(err);
}
return '';
}
module.exports = _cd;
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