示例#1
0
// 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
}
示例#2
0
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
}
示例#3
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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
}
示例#4
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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
}
示例#5
0
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
}
示例#6
0
// 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
}