Println as argument in groovy script - groovy

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:
If you're calling it from a script, redefine stdout.
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.
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

Answer 2

One way to do this would be to set the out parameter in the binding when calling the first script:
So given a script s1.groovy:
//Print the letters of 'tim_yates', one per line
'tim_yates'.each this.&println
We can do (in s2.groovy)
// Create a StringWriter that will capture output
String output = new StringWriter().with { sw ->
// And make a Binding for our script
new Binding().with { b ->
// Set 'out' in the Binding to be our StringWriter
b[ 'out' ] = sw
// evaluate the file with the GroovyShell (using the binding)
new GroovyShell( b ).evaluate( new File( 's1.groovy' ) )
}
// And return the String captured in our writer
sw.toString()
}
println output
And then run it with groovy s2.groovy
Edit
I think this is option #1 in Dave's answer...