Beispiel #1
0
// RunCommand detects the project root, parses flags and runs the Command.
func RunCommand(fs *flag.FlagSet, cmd *Command, projectroot, goroot string, args []string) error {
	if cmd.AddFlags != nil {
		cmd.AddFlags(fs)
	}
	if err := fs.Parse(args); err != nil {
		fs.Usage()
		os.Exit(1)
	}
	args = fs.Args() // reset to the remaining arguments

	if projectroot == "" {
		return fmt.Errorf("project root is blank")
	}

	root, err := FindProjectroot(projectroot)
	if err != nil {
		return fmt.Errorf("could not locate project root: %v", err)
	}
	project := gb.NewProject(root)

	gb.Debugf("project root %q", project.Projectdir())

	ctx, err := project.NewContext(
		gb.GcToolchain(),
	)
	if err != nil {
		return fmt.Errorf("unable to construct context: %v", err)
	}
	gb.Debugf("args: %v", args)
	return cmd.Run(ctx, args)
}
Beispiel #2
0
func main() {
	root, err := cmd.FindProjectroot(projectroot)
	if err != nil {
		gb.Fatalf("could not locate project root: %v", err)
	}
	project := gb.NewProject(root)
	gb.Debugf("project root %q", project.Projectdir())

	args := os.Args[1:]
	if len(args) < 1 || args[0] == "-h" {
		fs.Usage()
		os.Exit(1)
	}

	if args[0] == "help" {
		help(args[1:])
		return
	}

	for _, command := range commands {
		if command.Name == args[0] && command.Runnable() {

			// add extra flags if necessary
			if command.AddFlags != nil {
				command.AddFlags(fs)
			}

			if command.FlagParse != nil {
				err = command.FlagParse(fs, args)
			} else {
				err = fs.Parse(args[1:])
			}
			if err != nil {
				gb.Fatalf("could not parse flags: %v", err)
			}
			args = fs.Args() // reset args to the leftovers from fs.Parse
			gb.Debugf("args: %v", args)

			ctx, err := project.NewContext(
				gb.GcToolchain(),
			)
			if err != nil {
				gb.Fatalf("unable to construct context: %v", err)
			}

			if err := command.Run(ctx, args); err != nil {
				gb.Fatalf("command %q failed: %v", command.Name, err)
			}
			return
		}
	}
	gb.Fatalf("unknown command %q ", args[0])
}
Beispiel #3
0
func main() {
	args := os.Args
	if len(args) < 2 || args[1] == "-h" {
		fs.Usage()
		os.Exit(1)
	}
	name := args[1]
	if name == "help" {
		help(args[2:])
		return
	}
	command, ok := commands[name]
	if (command != nil && !command.Runnable()) || !ok {
		if _, err := lookupPlugin(name); err != nil {
			gb.Errorf("unknown command %q", name)
			fs.Usage()
			os.Exit(1)
		}
		command = commands["plugin"]
		args = append([]string{"plugin"}, args...)
	}

	// add extra flags if necessary
	if command.AddFlags != nil {
		command.AddFlags(fs)
	}

	var err error
	if command.FlagParse != nil {
		err = command.FlagParse(fs, args)
	} else {
		err = fs.Parse(args[2:])
	}
	if err != nil {
		gb.Fatalf("could not parse flags: %v", err)
	}

	args = fs.Args()              // reset args to the leftovers from fs.Parse
	cwd, err := filepath.Abs(cwd) // if cwd was passed in via -R, make sure it is absolute
	if err != nil {
		gb.Fatalf("could not make project root absolute: %v", err)
	}

	root, err := cmd.FindProjectroot(cwd)
	if err != nil {
		gb.Fatalf("could not locate project root: %v", err)
	}
	project := gb.NewProject(root)

	gb.Debugf("project root %q", project.Projectdir())

	ctx, err := project.NewContext(
		gb.GcToolchain(),
		gb.Ldflags(ldflags),
	)
	if err != nil {
		gb.Fatalf("unable to construct context: %v", err)
	}

	if command.ParseArgs != nil {
		args = command.ParseArgs(ctx, root, args)
	} else {
		args = cmd.ImportPaths(ctx, root, args)
	}

	gb.Debugf("args: %v", args)
	if err := command.Run(ctx, args); err != nil {
		gb.Fatalf("command %q failed: %v", name, err)
	}
}
Beispiel #4
0
func testProject(t *testing.T) *gb.Project {
	cwd := getwd(t)
	root := filepath.Join(cwd, "..", "testdata")
	return gb.NewProject(root)
}