For the *execute-external-file* script*, *here is one of my test files, a
tiny Julia file (of course, install Julia first):
headline: @file julia-1.jl
# function to calculate the volume of a sphere
function sphere_vol(r)
# julia allows Unicode names (in UTF-8 encoding)
# so either "pi" or the symbol π can be used
# return (4/3)*pi*r^3
return (4/3)*π*r^3
end
vol = sphere_vol(3)
# @printf allows number formatting but does not automatically append the \n
to statements
using Printf
@printf "volume = %0.3f\n" vol
For the command to find the Julia processor, you have to create an @data
settings node named *@data run-external-processor-map, *like this one (.py
scripts are hardcoded in, of course, and don't need to be included here):
EXTENSIONS
.jl: julia # Trailing comments are allowed
.lua: lua
.rb: ruby
.nim: nim
PROCESSORS
julia: julia
lua: lua
nim: nim
# Originally, ruby was not on the PATH, so we needed its full path:
# ruby: C:\Ruby27-x64\bin\ruby.exe
# After ruby was added to the PATH, we could use its bare name:
ruby: ruby
This command is supposed to open a new terminal window and run the command
in it. The terminal *must* stay open after the external program ends so
that the user can read any output (especially error messages!). The
trickiest part of the command is figuring out the terminal launch command
for Linux that will launch and stay open at the end, since there is no one
standard method good on all Linux distros. My script uses some heuristics
to try to get it right. These can include scanning the --help output of
the candidate terminal, IIRC.
On Sunday, June 9, 2024 at 3:56:45 PM UTC-4 Félix wrote:
> Hello Leonistas! :)
>
> I'm currently implementing and testing the *execute-external-file *&
> *execute-general-script
> *commands in LeoJS.
>
> *execute-external-file was made by Thomas around February 2023 while
> execute-general-script was made by Edward around june 2021.*
>
> I was just wondering if anyone could send me 'minimal/proof-of-concept'
> stripped down leo file(s) to test any of those two commands. (with simple
> 'toy'/'hello-world' scripts to run with them) If you have a few minutes to
> spare to prepare such a thing... :)
>
> Thanks!
>
> Félix
>
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