func list(ctx *gb.Context, args []string) error {
gb.Debugf("list: %v", args)
if formatStdin {
var formatBuffer bytes.Buffer
io.Copy(&formatBuffer, os.Stdin)
format = formatBuffer.String()
}
args = cmd.ImportPaths(ctx, cmd.MustGetwd(), args)
pkgs, err := cmd.ResolvePackages(ctx, args...)
if err != nil {
gb.Fatalf("unable to resolve: %v", err)
}
if jsonOutput {
views := make([]*PackageView, 0, len(pkgs))
for _, pkg := range pkgs {
views = append(views, NewPackageView(pkg))
}
encoder := json.NewEncoder(os.Stdout)
if err := encoder.Encode(views); err != nil {
return fmt.Errorf("Error occurred during json encoding: %v", err)
}
} else {
tmpl, err := template.New("list").Parse(format)
if err != nil {
return fmt.Errorf("unable to parse template %q: %v", format, err)
}
for _, pkg := range pkgs {
if err := tmpl.Execute(os.Stdout, pkg); err != nil {
return fmt.Errorf("unable to execute template: %v", err)
}
fmt.Fprintln(os.Stdout)
}
}
return nil
}
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 command.ParseArgs != nil {
args = command.ParseArgs(ctx, ctx.Projectdir(), args)
} else {
args = cmd.ImportPaths(ctx, ctx.Projectdir(), args)
}
gb.Debugf("args: %v", args)
if err := command.Run(ctx, args); err != nil {
gb.Fatalf("command %q failed: %v", name, err)
}
}