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"]
}
// 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
if command == commands["plugin"] {
args = append([]string{name}, args...)
}
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)
}
ctx, err := cmd.NewContext(
cwd, // project root
gb.GcToolchain(),
gb.Gcflags(gcflags),
gb.Ldflags(ldflags),
)
if err != nil {
gb.Fatalf("unable to construct context: %v", err)
}
if !noDestroyContext {
defer ctx.Destroy()
}
if command.ParseArgs != nil {
args = command.ParseArgs(ctx, ctx.Projectdir(), args)
} else {
args = cmd.ImportPaths(ctx, cwd, args)
}
gb.Debugf("args: %v", args)
if err := command.Run(ctx, args); err != nil {
gb.Fatalf("command %q failed: %v", name, err)
}
}
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 {
plugin, err := lookupPlugin(name)
if err != nil {
gb.Errorf("unknown command %q", name)
fs.Usage()
os.Exit(1)
}
command = &cmd.Command{
Run: func(ctx *gb.Context, args []string) error {
if len(args) < 1 {
return fmt.Errorf("plugin: no command supplied")
}
args = append([]string{plugin}, args...)
env := cmd.MergeEnv(os.Environ(), map[string]string{
"GB_PROJECT_DIR": ctx.Projectdir(),
})
cmd := exec.Cmd{
Path: plugin,
Args: args,
Env: env,
Stdin: os.Stdin,
Stdout: os.Stdout,
Stderr: os.Stderr,
}
return cmd.Run()
},
// plugin should not interpret arguments
ParseArgs: func(_ *gb.Context, _ string, args []string) []string { return 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
if command == commands["plugin"] {
args = append([]string{name}, args...)
}
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)
}
ctx, err := cmd.NewContext(
cwd, // project root
gb.GcToolchain(),
gb.Gcflags(gcflags),
gb.Ldflags(ldflags),
)
if err != nil {
gb.Fatalf("unable to construct context: %v", err)
}
if !noDestroyContext {
defer ctx.Destroy()
}
if command.ParseArgs != nil {
args = command.ParseArgs(ctx, ctx.Projectdir(), args)
} else {
args = cmd.ImportPaths(ctx, cwd, args)
}
gb.Debugf("args: %v", args)
if err := command.Run(ctx, args); err != nil {
gb.Fatalf("command %q failed: %v", name, err)
}
}