go - Parsing integer from exec.Command output -

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i'm trying run command inside go program , parse integer response. command returns output this:

6
fyb_src/ex1.fyb (1) wins!

splitting lines , removing whitespace strings.split , strings.trimspaces works fine. however, while trying parse number integer following error:

panic: strconv.parseint: parsing "0 \r1 \r2 \r3 \r4 \r5 \r6": invalid syntax

but printing string i'm trying parse terminal yields following result:

6

i'm not sure go here. number looks integer me. error message isn't useful either (at least me). have idea?

edit: code i'm running

    out, _ := exec.command(pwd+"/osx_fukyobrane_amd64", "fyb_src/"+filename, "fyb_src/salty.fyb", "t").combinedoutput()     parts := strings.split(string(out), "\n")      fmt.println(parts[0])      rounds, err := strconv.atoi(strings.trimspace(parts[0]))     if err != nil {         panic(err.error())     }

it appear problem parts[0] contains string "0 \r1 \r2 \r3 \r4 \r5 \r6" instead of number.

the strconv.atoi function looking 1 number parse - assume trying first "0" in case. if so, problem code: strings.split(string(out), "\n") looking "\n" not "\r", apparently being returned osx_fukyobrane_amd64.

one solution instead split lines this:

regexp.mustcompile(`[\r\n]+`).split(parts[0], -1)

that collapse multiple lines 1 , treat \r, \n, , \r\n (or other weird combinations) valid line breaks.


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