Guesslang

Guesslang detects the programming language of a given source code:

echo '
package main
import "fmt"

func main() {
    fmt.Println("My mascot is a gopher and Google loves me. Who am I?")
}

' | guesslang

# ⟶ Programming language: Go

Guesslang supports 54 programming languages:

Languages
`Assembly`	`Batchfile`	`C`	`C#`	`C++`
`Clojure`	`CMake`	`COBOL`	`CoffeeScript`	`CSS`
`CSV`	`Dart`	`DM`	`Dockerfile`	`Elixir`
`Erlang`	`Fortran`	`Go`	`Groovy`	`Haskell`
`HTML`	`INI`	`Java`	`JavaScript`	`JSON`
`Julia`	`Kotlin`	`Lisp`	`Lua`	`Makefile`
`Markdown`	`Matlab`	`Objective-C`	`OCaml`	`Pascal`
`Perl`	`PHP`	`PowerShell`	`Prolog`	`Python`
`R`	`Ruby`	`Rust`	`Scala`	`Shell`
`SQL`	`Swift`	`TeX`	`TOML`	`TypeScript`
`Verilog`	`Visual Basic`	`XML`	`YAML`

With a guessing accuracy higher than 90%.

Apps powered by Guesslang

Microsoft Visual Studio Code, automatic language detection

Visual Studio Code detects the programming language of the source code that you paste into the editor using Guesslang machine learning model.

Chameledit

Chameledit is a simple web-editor that automatically highlights your code.

Other projects...

Pasta, the Slack bot that pretty-pastes source code.
GG, a silly guessing game.

Documentation

Guesslang documentation is available at https://guesslang.readthedocs.io/en/latest/
Guesslang language detection explained here https://guesslang.readthedocs.io/en/latest/contents.html#how-does-guesslang-guess
Guesslang is based on Tensorflow machine learning framework

Installation

Python 3.7+ is required
Install the latest stable version:

pip3 install guesslang

or install Guesslang from source code:

pip3 install .

Windows specific

To run Tensorflow on Microsoft Windows you need to install Visual C++ runtime libraries, available on Microsoft website

Guesslang command line

Show all available options

guesslang --help

Detect the programming language of /etc/bashrc configuration file:

guesslang /etc/bashrc

# ⟶ Programming language: Shell

Detect the programming language of a given text:

echo '
/** Turn command line arguments to uppercase */
object Main {
  def main(args: Array[String]) {
    val res = for (a <- args) yield a.toUpperCase
    println("Arguments: " + res.toString)
  }
}
' | guesslang

# ⟶ Programming language: Scala

Show the detection probabilities for a given source code:

echo "
def qsort(items):
    if not items:
        return []
    else:
        pivot = items[0]
        less = [x for x in items if x <  pivot]
        more = [x for x in items[1:] if x >= pivot]
        return qsort(less) + [pivot] + qsort(more)


if __name__ == '__main__':
    items = [1, 4, 2, 7, 9, 3]
    print(f'Sorted: {qsort(items)}')

" | guesslang --probabilities

# Language name       Probability
#  Python               74.80%
#  Haskell               6.73%
#  CoffeeScript          5.32%
#  Groovy                1.95%
#  Markdown              0.93%
#  ...

Guesslang Python package

Guesslang can be used as a Python package. Package documentation available here

from guesslang import Guess


guess = Guess()

name = guess.language_name("""
    % Quick sort

    -module (recursion).
    -export ([qsort/1]).

    qsort([]) -> [];
    qsort([Pivot|T]) ->
          qsort([X || X <- T, X < Pivot])
          ++ [Pivot] ++
          qsort([X || X <- T, X >= Pivot]).
""")

print(name)  # ⟶ Erlang

License and credits

Guesslang documentation
Gesslang training dataset created with GuesslangTools
Guesslang developped with Tensorflow
Guesslang icon created with AndroidAssetStudio and Eduardo Tunni's Warnes font
Example source codes used here retrieved from Rosetta Code

yoeo/guesslang