diff options
Diffstat (limited to 'node_modules/@mrmlnc/readdir-enhanced/lib/stat.js')
-rw-r--r-- | node_modules/@mrmlnc/readdir-enhanced/lib/stat.js | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/node_modules/@mrmlnc/readdir-enhanced/lib/stat.js b/node_modules/@mrmlnc/readdir-enhanced/lib/stat.js new file mode 100644 index 0000000..e338693 --- /dev/null +++ b/node_modules/@mrmlnc/readdir-enhanced/lib/stat.js @@ -0,0 +1,74 @@ +'use strict'; + +const call = require('./call'); + +module.exports = stat; + +/** + * Retrieves the {@link fs.Stats} for the given path. If the path is a symbolic link, + * then the Stats of the symlink's target are returned instead. If the symlink is broken, + * then the Stats of the symlink itself are returned. + * + * @param {object} fs - Synchronous or Asynchronouse facade for the "fs" module + * @param {string} path - The path to return stats for + * @param {function} callback + */ +function stat (fs, path, callback) { + let isSymLink = false; + + call.safe(fs.lstat, path, (err, lstats) => { + if (err) { + // fs.lstat threw an eror + return callback(err); + } + + try { + isSymLink = lstats.isSymbolicLink(); + } + catch (err2) { + // lstats.isSymbolicLink() threw an error + // (probably because fs.lstat returned an invalid result) + return callback(err2); + } + + if (isSymLink) { + // Try to resolve the symlink + symlinkStat(fs, path, lstats, callback); + } + else { + // It's not a symlink, so return the stats as-is + callback(null, lstats); + } + }); +} + +/** + * Retrieves the {@link fs.Stats} for the target of the given symlink. + * If the symlink is broken, then the Stats of the symlink itself are returned. + * + * @param {object} fs - Synchronous or Asynchronouse facade for the "fs" module + * @param {string} path - The path of the symlink to return stats for + * @param {object} lstats - The stats of the symlink + * @param {function} callback + */ +function symlinkStat (fs, path, lstats, callback) { + call.safe(fs.stat, path, (err, stats) => { + if (err) { + // The symlink is broken, so return the stats for the link itself + return callback(null, lstats); + } + + try { + // Return the stats for the resolved symlink target, + // and override the `isSymbolicLink` method to indicate that it's a symlink + stats.isSymbolicLink = () => true; + } + catch (err2) { + // Setting stats.isSymbolicLink threw an error + // (probably because fs.stat returned an invalid result) + return callback(err2); + } + + callback(null, stats); + }); +} |