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README.md |
stat-mode
Offers convenient getters and setters for the stat mode
You know that mode
property on the fs.Stat
object that you probably
usually just ignore? Well there's acutally a lot of information packed
into that number.
The specific information includes:
- What the "file type" of file it is
- Whether or not the
setuid
andsetgid
bits are set - Whether or not the
sticky
bit is set - The read, write, and execute permissions for the owner, group and others
This module helps you extract that information.
All the getters are also setters, which change the mode
property
appropriately. This is useful for when you have to build up your
own fs.Stat
object for whatever reason (like when implementing a
FUSE filesystem.
Installation
$ npm install stat-mode
Example
So given some arbitrary file (let's say /bin/echo
):
$ ls -l /bin/echo
-rwxr-xr-x 1 root wheel 14128 Aug 11 2013 /bin/echo
We can inspect it using the fs.stat()
call and creating a Mode
instance
on top of it.
var fs = require('fs');
var Mode = require('stat-mode');
fs.stat('/bin/echo', function (err, stat) {
if (err) throw err;
// create a "Mode" instance on top of the `stat` object
var mode = new Mode(stat);
// you can check what kind of file it is:
mode.isDirectory();
// false
mode.isFIFO();
// false
mode.isFile();
// true
// and you can also check individual owner, group and others permissions
mode.owner.read;
// true
mode.owner.write;
// true
mode.owner.execute;
// true
mode.group.read;
// true
mode.group.write;
// false
mode.group.execute;
// true
mode.others.read;
// true
mode.others.write;
// false
mode.others.execute;
// true
// the `toString()` output resembes the `ls -l` output:
mode.toString();
// '-rwxr-xr-x'
});
API
new Mode(Object stat) → Mode
You must pass in "stat" object to the Mode
constructor. The "stat"
object can be a real fs.Stat
instance, or really any Object with a
mode
property.
mode.isDirectory([Boolean set]) → Boolean
Returns true
if the mode's file type is "directory", false
otherwise.
If you pass true
to the function, then the mode will be set to "directory".
mode.isFile([Boolean set]) → Boolean
Returns true
if the mode's file type is "file", false
otherwise.
If you pass true
to the function, then the mode will be set to "file".
mode.isBlockDevice([Boolean set]) → Boolean
Returns true
if the mode's file type is "block device", false
otherwise.
If you pass true
to the function, then the mode will be set to "block device".
mode.isCharacterDevice([Boolean set]) → Boolean
Returns true
if the mode's file type is "character device", false
otherwise.
If you pass true
to the function, then the mode will be set to "character
device".
mode.isSymbolicLink([Boolean set]) → Boolean
Returns true
if the mode's file type is "symbolic link", false
otherwise.
If you pass true
to the function, then the mode will be set to "symbolic link".
mode.isFIFO([Boolean set]) → Boolean
Returns true
if the mode's file type is "FIFO", false
otherwise.
If you pass true
to the function, then the mode will be set to "FIFO".
mode.isSocket([Boolean set]) → Boolean
Returns true
if the mode's file type is "socket", false
otherwise.
If you pass true
to the function, then the mode will be set to "socket".
mode.owner.read → Boolean [Getter/Setter]
true
if the mode is "owner read" rights, false
otherwise.
mode.owner.write → Boolean [Getter/Setter]
true
if the mode is "owner write" rights, false
otherwise.
mode.owner.execute → Boolean [Getter/Setter]
true
if the mode is "owner execute" rights, false
otherwise.
mode.group.read → Boolean [Getter/Setter]
true
if the mode is "group read" rights, false
otherwise.
mode.group.write → Boolean [Getter/Setter]
true
if the mode is "group write" rights, false
otherwise.
mode.group.execute → Boolean [Getter/Setter]
true
if the mode is "group execute" rights, false
otherwise.
mode.others.read → Boolean [Getter/Setter]
true
if the mode is "others read" rights, false
otherwise.
mode.others.write → Boolean [Getter/Setter]
true
if the mode is "others write" rights, false
otherwise.
mode.others.execute → Boolean [Getter/Setter]
true
if the mode is "others execute" rights, false
otherwise.