compat

compat

Overview

compat is a pure-Go library providing unified access to file and device metadata, atomic file operations, process priority, etc. on all major operating systems, include Windows, Linux, macOS, Android, iOS, and many others.

Usage

The documentation is available at https://pkg.go.dev/github.com/rasa/compat

Stat

Here's an example of calling compat.Stat():

package main

import (
   "fmt"
   "github.com/rasa/compat"
)

func main() {
	fi, err := compat.Stat(os.Executable())
	if err != nil {
		fmt.Println(err)
		return
	}
        // Same functions as os.Stat() and os.Lstat():
	fmt.Printf("Name()    =%v\n", fi.Name())     // base name of the file
	fmt.Printf("Size()    =%v\n", fi.Size())     // length in bytes
	fmt.Printf("Mode()    =0o%o\n", fi.Mode())   // file mode bits
	fmt.Printf("ModTime() =%v\n", fi.ModTime())  // last modified time
	fmt.Printf("IsDir()   =%v\n", fi.IsDir())    // is a directory
	fmt.Printf("Sys()     =%+v\n", fi.Sys())     // underlying data source
        // New functions provided by this compat library:
	fmt.Printf("DeviceID()=%v\n", fi.DeviceID()) // device ID
	fmt.Printf("FileID()  =%v\n", fi.FileID())   // inode/file ID
	fmt.Printf("Links()   =%v\n", fi.Links())    // number of hard links
	fmt.Printf("ATime()   =%v\n", fi.ATime())    // last access time
	fmt.Printf("BTime()   =%v\n", fi.BTime())    // birth/created time
	fmt.Printf("CTime()   =%v\n", fi.CTime())    // metadata changed time
	fmt.Printf("MTime()   =%v\n", fi.MTime())    // alias for ModTime
	fmt.Printf("UID()     =%v\n", fi.UID())      // user ID
	fmt.Printf("GID()     =%v\n", fi.GID())      // group ID
}

which, on Linux, produced:

Name()    =cmd
Size()    =1597624
Mode()    =0o775
ModTime() =2025-05-08 22:11:01.353744514 -0700 PDT
IsDir()   =false
Sys()     =&{Dev:64512 Ino:56893266 Nlink:1 Mode:33277 Uid:1000 Gid:1000 X__pad0:0 Rdev:0 Size:1597624 Blksize:4096 Blocks:3128 Atim:{Sec:1746767461 Nsec:354744521} Mtim:{Sec:1746767461 Nsec:353744514} Ctim:{Sec:1746767461 Nsec:353744514} X__unused:[0 0 0]}
DeviceID()=64512
FileID()  =56893266
Links()   =1
ATime()   =2025-05-08 22:11:01.354744521 -0700 PDT
BTime()   =0001-01-01 00:00:00 +0000 UTC
CTime()   =2025-05-08 22:11:01.353744514 -0700 PDT
MTime()   =2025-05-08 22:11:01.353744514 -0700 PDT
UID()     =1000
GID()     =1000

Installing

To install compat, use go get:

go get github.com/rasa/compat

FileInfo Functions

The Stat() and Lstat() functions return a FileInfo object. The table below lists the operating system support for each of the FileInfo functions:

* Support will depend on the underlying file system. See Comparison of file systems for details.

✅ fully supported.
☑️ the UID() and GID() values are 64-bit hashes of the user and group names.
🚧 planned to be implemented.
✖️ not implemented (but if the OS supports it, we could add support).
❌ not implemented (as the OS doesn't support it).

Other Functions

All other functions provided by this library are fully supported by all the above operating systems.

Contributing

Please feel free to submit issues, fork the repository and send pull requests!

License

This project is MIT licensed.