loc is a tool for counting lines of code. It's a rust implementation of cloc, but it's more than 100x faster. There's another rust code counting tool called tokei, loc is ~2-10x faster than tokei, depending on how many files are being counted.

I can count my 400k file src directory (thanks npm) in just under 7 seconds with loc, in a 1m14s with tokei, and I'm not even willing to try with cloc.

Counting just the dragonflybsd codebase (~9 million lines):

• loc: 1.09 seconds
• tokei: 5.3 seconds
• cloc: 1 minute, 50 seconds

Installation

There are binaries available on the releases page, thanks to the wonderful rust-everywhere project and travisci. For anyone familiar with Rust there's cargo install loc. If you want to install Rust/Cargo, this is probably the easiest way: https://www.rustup.rs/.

Windows

loc should now compile on Windows, but you can also run it under Windows using linux emulation:

You can run `loc` on Windows 10 Anniversary Update build 14393 or later using the [Windows Subsystem for Linux](https://msdn.microsoft.com/de-de/commandline/wsl/install_guide?f=255&MSPPError=-2147217396). Simply download the Linux distribution from the [releases page](https://github.com/cgag/loc/releases), and run it in `bash` using a WSL-compatible path (e.g. `/mnt/c/Users/Foo/Repo/` instead of `C:\Users\Foo\Repo`).

Known Issues

Fortran has a rule that comments must start with the first character of a line. I only check if it's the first non-whitespace character of a line. I don't know how often this is a problem in real code. I would think not often.

Comments inside string literals: You can get incorrect counts if your code has something like this:

x = "/* I haven't slept \ 
for 10 days \
because that would be too long \
*/";

loc counts the first line and last lines correctly as code, but the middle lines will be incorrectly counted as comments.

Supported Languages

• ActionScript
• Ada
• Agda
• ASP
• ASP.NET
• Assembly
• Autoconf
• Awk
• Batch
• Bourne Shell
• C
• C Shell
• C/C++ Header
• C#
• C++
• Clojure
• CoffeeScript
• ColdFusion
• ColdFusionScript
• Coq
• CSS
• CUDA
• CUDA Header
• D
• Dart
• DeviceTree
• Erlang
• Forth
• FORTRAN Legacy
• FORTRAN Modern
• GLSL
• Go
• Handlebars
• Haskell
• Hex
• HTML
• Idris
• INI
• Intel Hex
• Isabelle
• Jai
• Java
• JavaScript
• JSON
• Jsx
• Julia
• Kotlin
• Lean
• Less
• LinkerScript
• Lisp
• Lua
• Make
• Makefile
• Markdown
• Mustache
• Nim
• Objective-C
• Objective-C++
• OCaml
• Oz
• Pascal
• Perl
• PHP
• Plain Text
• Polly
• Prolog
• Protobuf
• Pyret
• Python
• Qcl
• QML
• R
• Razor
• reStructuredText
• Ruby
• RubyHtml
• Rust
• SaltStack
• Sass
• Scala
• SML
• SQL
• Stylus
• Swift
• Tcl
• TeX
• Toml
• TypeScript
• Tsx
• UnrealScript
• VimL
• Wolfram
• XML
• Yacc
• YAML
• Z Shell

Attributions

This project contains code from Tokei by Aaronepower and ripgrep by BurntSushi.