Question

I have one groovy script which print some statistics: println: “…”

now I have another groovy script which needs this data. Is possible somehow run first script from second and save this data as paramater and then work with them from second script ? I just know how to run script: with GroovyShell() and then run(...) but this doesnt return output of first script

Answer 1

A few options:

1. If you’re calling it from a script, redefine stdout.
2. Fix the first script so it prints data retrieved from a class, and re-write the calling script to use that class instead of relying on the printed output from the first. Long-term may be the best option.
3. Use a pipe on the command line: groovy s1.groovy | groovy s2.groovy

Personally, when composing things that do stuff with stdin/stdio, I prefer the last method. Example:

s1.groovy

5.times { println it }

s2.groovy

r = new BufferedReader(new InputStreamReader(System.in))
while (l = r.readLine()) { println((l as Integer) * 2) }

Output

$ groovy s1.groovy 
0
1
2
3
4
$ groovy s1.groovy | groovy s2.groovy 
0
2
4
6
8