shorthen devel build version string

main.go

@@ -9,6 +9,7 @@ import (
 	"bytes"
 	"fmt"
 	"os"
+	"regexp"
 	"strconv"
 	"strings"
 
@@ -69,11 +70,13 @@ func processes() {
 	ps := goprocess.FindAll()
 
 	var maxPID, maxPPID, maxExec, maxVersion int
-	for _, p := range ps {
+	for i, p := range ps {
+		ps[i].BuildVersion = shortenVersion(p.BuildVersion)
 		maxPID = max(maxPID, len(strconv.Itoa(p.PID)))
 		maxPPID = max(maxPPID, len(strconv.Itoa(p.PPID)))
 		maxExec = max(maxExec, len(p.Exec))
-		maxVersion = max(maxVersion, len(p.BuildVersion))
+		maxVersion = max(maxVersion, len(ps[i].BuildVersion))
+
 	}
 
 	for _, p := range ps {
@@ -99,6 +102,19 @@ func processes() {
 	}
 }
 
+var develRe = regexp.MustCompile(`devel\s+\+\w+`)
+
+func shortenVersion(v string) string {
+	if !strings.HasPrefix(v, "devel") {
+		return v
+	}
+	results := develRe.FindAllString(v, 1)
+	if len(results) == 0 {
+		return v
+	}
+	return results[0]
+}
+
 func usage(msg string) {
 	if msg != "" {
 		fmt.Printf("gops: %v\n", msg)

main_test.go

@@ -0,0 +1,41 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import "testing"
+
+func Test_shortenVersion(t *testing.T) {
+	type args struct {
+		v string
+	}
+	tests := []struct {
+		version string
+		want    string
+	}{
+		{
+			version: "go1.8.1.typealias",
+			want:    "go1.8.1.typealias",
+		},
+		{
+			version: "go1.9",
+			want:    "go1.9",
+		},
+		{
+			version: "go1.9rc",
+			want:    "go1.9rc",
+		},
+		{
+			version: "devel +990dac2723 Fri Jun 30 18:24:58 2017 +0000",
+			want:    "devel +990dac2723",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.version, func(t *testing.T) {
+			if got := shortenVersion(tt.version); got != tt.want {
+				t.Errorf("shortenVersion() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}