happy-ferret / gomonkey

A Go wrapper around SpiderMonkey

gomonkey

A Go wrapper around SpiderMonkey.

Installing

To install gomonkey you need a recent (>= 1.8.5) https://developer.mozilla.org/en/SpiderMonkey/ and have the js-config program in your $PATH, then just:

> go get github.com/zond/gomonkey
# github.com/zond/gomonkey
ld: library not found for -lgomonkey
collect2: ld returned 1 exit status

The error at the end is expected.

For some reason cgo is unable to link properly against recent SpiderMonkeys, and to fix this I created a small C wrapper that you compile and link using your regular old C compiler.

To build the wrapper and then install the library properly:

> cd $GOPATH/src/github.com/zond/gomonkey
> make
cc -fPIC -shared -o libgomonkey.dylib -I/usr/local/Cellar/spidermonkey/1.8.5/include/js -I/usr/local/Cellar/nspr/4.8.8/include/nspr -L/usr/local/Cellar/spidermonkey/1.8.5/lib -lmozjs185  c/gomonkey.c
> cd -
> go get github.com/zond/gomonkey

The Makefile is really trivial and probably won't work on your system (patches are welcome), but if it works you should now have a functional installation!

Testing

go test

What else?

Currently there isn't much more to do, even if you could look at https://github.com/zond/gomonkey/blob/master/gomonkey_test.go and figure out how to use this for other things than testing itself ;)

Why?

The reason I started this was that I tried to use go-v8, but never got the last step (makeing the wrapper and re-getting the library) to work properly, and I really wanted the JavaScript library I used to be installable via go get ....

And since SpiderMonkey already exports a C API it was (to me) preferable to use it instead of v8 (which AFAIK only exports a C++ API).