[https://batsh.org] | Source
Notes from maintainers
This repo was transferred from the original author @BYVoid, and has been upgraded to build on more recent OCaml versions (buildable on at least OCaml 4.08.1). You can see the discussion thread which spawned this fork effort here.
Note that this project is currently in minimum maintenance mode. Issues, PR may not be actively dealt with.
The following sections may contain out of date info as we are still in the process of going through the repo
Project description
Batsh is a simple programming language that compiles to Bash and Windows Batch. It enables you to write your script once runs on all platforms without any additional dependency.
Both Bash and Batch are messy to read and tricky to write due to historical reasons. You have to spend a lot of time learning either of them and write platform-dependent code for each operating system. I have wasted lots of time in my life struggling with bizarre syntaxes and unreasonable behaviors of them, and do not want to waste any more.
If you happen to be a maintainer of a cross-platform tool which relies on Bash on Linux/Mac and Batch on Windows as "glue code", and found it painful to "synchronize" between them, you would definitely like to try Batsh.
Try it online: http://batsh.org
Batsh is implemented in OCaml and managed by OPAM.
opam switch
.opam install batsh
You have to install OCaml (version 4.00.1 or higher) development environment before compiling Batsh from source code, and follow steps below:
make
make install
batsh
If there is any missing dependency, you can install them by running opam install dune core_kernel ounit dlist cmdliner
The syntax of Batsh is C-based (derived from C programming language).
If you have learned C, Java, C++ or JavaScript, Batsh is quite easy for you.
a = 1;
b = "string";
c = [1, 2, "str", true, false];
a = 1 + 2;
b = a * 7;
c = "Con" ++ "cat";
d = c ++ b;
// On UNIX
output = ls();
// On Windows
output = dir();
// Platform independent
output = readdir();
// Test existence
ex = exists("file.txt");
a = 3;
if (a > 2) {
println("Yes");
} else {
println("No");
}
// Fibonacci
n = 0;
i = 0;
j = 1;
while (n < 60) {
k = i + j;
i = j;
j = k;
n = n + 1;
println(k);
}
v1 = "Global V1";
v2 = "Global V2";
function func(p) {
v1 = "Local " ++ p;
global v2;
v2 = "V2 Modified.";
}
func("Var");
function fibonacci(num) {
if (num == 0) {
return 0;
} else if (num == 1) {
return 1;
} else {
return (fibonacci(num - 2) + fibonacci(num - 1));
}
}
println(fibonacci(8));
In order to make script cross-platform, Batsh provided some "built-in" functions that will compile to platform-dependent code. It is assumed that Bash script runs on Linux or Mac OS and Batch script runs on Windows (XP or higher), which means Cygwin or wine are not supported.
print(text, ...)
Prints a text string to console without a newline.
println(text, ...)
Prints a text string to console with a new line (LF for bash, CRLF for batch).
call(path, arg, ...)
Runs command from path through shell.
bash(rawStatement)
Put rawStatement
into compiled code for Bash. Ignore for Windows Batch.
batch(rawStatement)
Put rawStatement
into compiled code for Windows Batch. Ignore for Bash.
readdir(path)
Equals to ls
and dir /w
.
exists(path)
Test existence of given path.
NAME
batsh - A language that compiles to Bash and Windows Batch
SYNOPSIS
batsh COMMAND ...
COMMANDS
bash
Compile to Bash script.
batsh
Format source file.
winbat
Compile to Windows Batch script.
OPTIONS
--help[=FMT] (default=pager)
Show this help in format FMT (pager, plain or groff).
--version
Show version information.
Yes you can use any of them as platform-independent glue code. But there are several disadvantages:
Those reasons are why I developed Batsh.
Last modified 07 October 2024