go-learn/check-versions.go

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package main
import (
"fmt"
"os"
"os/exec"
"runtime"
"strings"
)
func validateos() {
if runtime.GOOS == "windows" {
fmt.Println("Can't Execute this on a windows machine")
os.Exit(1)
}
}
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func execute(cmdstr string) string {
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validateos()
var cmdargs = strings.Split(cmdstr, " ") // string arrayified
var cmd = cmdargs[0] // command
cmdargs = append(cmdargs[:0], cmdargs[1:]...) // argument array sans cmd
out, err := exec.Command(cmd, cmdargs...).CombinedOutput()
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var output string
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if err != nil {
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output = err.Error()
} else {
output = string(out[:])
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}
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return output
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}
func main() {
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gitver := execute("git --version")
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verno := strings.Split(gitver, " ")[2]
fmt.Println(verno)
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gcnf := execute("git config -l")
config := strings.Split(gcnf, "\n")
for i, v := range config {
entry := strings.Split(v, "=")
if len(entry) < 2 {
continue
}
key := entry[0]
val := entry[1]
fmt.Printf("%d: %s = '%s' \n", i, key, val)
}
glog := execute("git log --oneline")
logarray := strings.Split(glog, "\n")
for _, v := range logarray {
entryarray := strings.SplitN(v, " ", 2)
if len(entryarray) < 2 {
continue
}
commitid := entryarray[0]
reason := entryarray[1]
fmt.Println(commitid, reason)
}
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}