// value accessor methods, gets the value as a certain type
func (ov OptionValue) Bool() (value bool, found bool, err error) {
if !ov.found {
return false, false, nil
}
val, ok := ov.value.(bool)
if !ok {
err = util.ErrCast()
}
return val, ov.found, err
}
func (ov OptionValue) String() (value string, found bool, err error) {
if !ov.found {
return "", false, nil
}
val, ok := ov.value.(string)
if !ok {
err = util.ErrCast()
}
return val, ov.found, err
}
func (ov OptionValue) Float() (value float64, found bool, err error) {
if !ov.found {
return 0, false, nil
}
val, ok := ov.value.(float64)
if !ok {
err = util.ErrCast()
}
return val, ov.found, err
}
func (ov OptionValue) Uint() (value uint, found bool, err error) {
if !ov.found {
return 0, false, nil
}
val, ok := ov.value.(uint)
if !ok {
err = util.ErrCast()
}
return val, ov.found, err
}
func (r *request) ConvertOptions() error {
for k, v := range r.options {
opt, ok := r.optionDefs[k]
if !ok {
continue
}
kind := reflect.TypeOf(v).Kind()
if kind != opt.Type() {
if kind == String {
convert := converters[opt.Type()]
str, ok := v.(string)
if !ok {
return util.ErrCast()
}
val, err := convert(str)
if err != nil {
value := fmt.Sprintf("value '%v'", v)
if len(str) == 0 {
value = "empty value"
}
return fmt.Errorf("Could not convert %s to type '%s' (for option '-%s')",
value, opt.Type().String(), k)
}
r.options[k] = val
} else {
return fmt.Errorf("Option '%s' should be type '%s', but got type '%s'",
k, opt.Type().String(), kind.String())
}
} else {
r.options[k] = v
}
for _, name := range opt.Names() {
if _, ok := r.options[name]; name != k && ok {
return fmt.Errorf("Duplicate command options were provided ('%s' and '%s')",
k, name)
}
}
}
return nil
}
// Parse parses the input commandline string (cmd, flags, and args).
// returns the corresponding command Request object.
func Parse(input []string, stdin *os.File, root *cmds.Command) (cmds.Request, *cmds.Command, []string, error) {
path, opts, stringVals, cmd, err := parseOpts(input, root)
if err != nil {
return nil, nil, path, err
}
optDefs, err := root.GetOptions(path)
if err != nil {
return nil, cmd, path, err
}
req, err := cmds.NewRequest(path, opts, nil, nil, cmd, optDefs)
if err != nil {
return nil, cmd, path, err
}
// if -r is provided, and it is associated with the package builtin
// recursive path option, allow recursive file paths
recursiveOpt := req.Option(cmds.RecShort)
recursive := false
if recursiveOpt != nil && recursiveOpt.Definition() == cmds.OptionRecursivePath {
recursive, _, err = recursiveOpt.Bool()
if err != nil {
return req, nil, nil, util.ErrCast()
}
}
stringArgs, fileArgs, err := parseArgs(stringVals, stdin, cmd.Arguments, recursive, root)
if err != nil {
return req, cmd, path, err
}
req.SetArguments(stringArgs)
file := files.NewSliceFile("", "", fileArgs)
req.SetFiles(file)
err = cmd.CheckArguments(req)
if err != nil {
return req, cmd, path, err
}
return req, cmd, path, nil
}