add portup (#19)

cmd/portup/main.go

@@ -0,0 +1,117 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"os/exec"
+
+	"github.com/alessio/unixtools/internal/version"
+)
+
+const (
+	PortExe = "/opt/local/bin/port"
+
+	programName = "portup"
+)
+
+var (
+	helpMode    bool
+	versionMode bool
+	runReclaim  bool
+
+	//	cwd string
+)
+
+func init() {
+	flag.BoolVar(&helpMode, "help", false, "display this help and exit.")
+	flag.BoolVar(&helpMode, "h", false, "")
+	flag.BoolVar(&versionMode, "version", false, "output version information and exit.")
+	flag.BoolVar(&versionMode, "v", false, "")
+	flag.BoolVar(&runReclaim, "with-reclaim", false, "run reclaim after 'port upgrade outdated'.")
+
+	flag.Usage = usage
+	flag.CommandLine.SetOutput(os.Stderr)
+}
+
+func main() {
+	log.SetFlags(log.LstdFlags)
+	log.SetPrefix(fmt.Sprintf("%s: ", programName))
+	log.SetOutput(os.Stderr)
+	flag.Parse()
+
+	handleHelpAndVersionModes()
+
+	if len(flag.Args()) > 0 {
+		logfile, err := openLogFile(flag.Arg(0))
+		if err != nil {
+			log.Fatalf("couldn't open the file %s: %v", flag.Arg(0), err)
+		}
+
+		log.SetOutput(logfile)
+	}
+
+	if err := runPortCommand("-N", "-v", "selfupdate"); err != nil {
+		log.Fatal(err)
+	}
+
+	if err := runPortCommand("-N", "outdated"); err != nil {
+		log.Fatal(err)
+	}
+
+	if err := runPortCommand("-N", "-v", "-R", "-u", "-c", "upgrade", "outdated"); err != nil {
+		log.Fatal(err)
+	}
+
+	if runReclaim {
+		if err := runPortCommand("-N", "-v", "reclaim"); err != nil {
+			log.Fatal(err)
+		}
+	}
+}
+
+func runPortCommand(args ...string) error {
+	log.Println("Will run", PortExe, args)
+	cmd := exec.Command(PortExe, args...)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	return cmd.Run()
+}
+
+func openLogFile(filename string) (io.WriteCloser, error) {
+	fp, err := os.OpenFile(filename, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)
+	if err != nil {
+		return nil, err
+	}
+
+	return fp, nil
+}
+
+func usage() {
+	_, _ = fmt.Fprintf(os.Stderr, `Usage: %s [PATH]
+This command is a simple and convenient shorcut
+to update and upgrade the packages installed
+with MacPorts.
+
+Options:
+`, programName)
+	flag.PrintDefaults()
+}
+
+func handleHelpAndVersionModes() {
+	if !helpMode && !versionMode {
+		return
+	}
+
+	switch {
+	case helpMode:
+		usage()
+	case versionMode:
+		version.PrintWithCopyright()
+	}
+
+	os.Exit(0)
+}