Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/github.com/jessevdk/go-flags/error.go b/vendor/github.com/jessevdk/go-flags/error.go
new file mode 100644
index 0000000..05528d8
--- /dev/null
+++ b/vendor/github.com/jessevdk/go-flags/error.go
@@ -0,0 +1,134 @@
+package flags
+
+import (
+ "fmt"
+)
+
+// ErrorType represents the type of error.
+type ErrorType uint
+
+const (
+ // ErrUnknown indicates a generic error.
+ ErrUnknown ErrorType = iota
+
+ // ErrExpectedArgument indicates that an argument was expected.
+ ErrExpectedArgument
+
+ // ErrUnknownFlag indicates an unknown flag.
+ ErrUnknownFlag
+
+ // ErrUnknownGroup indicates an unknown group.
+ ErrUnknownGroup
+
+ // ErrMarshal indicates a marshalling error while converting values.
+ ErrMarshal
+
+ // ErrHelp indicates that the built-in help was shown (the error
+ // contains the help message).
+ ErrHelp
+
+ // ErrNoArgumentForBool indicates that an argument was given for a
+ // boolean flag (which don't not take any arguments).
+ ErrNoArgumentForBool
+
+ // ErrRequired indicates that a required flag was not provided.
+ ErrRequired
+
+ // ErrShortNameTooLong indicates that a short flag name was specified,
+ // longer than one character.
+ ErrShortNameTooLong
+
+ // ErrDuplicatedFlag indicates that a short or long flag has been
+ // defined more than once
+ ErrDuplicatedFlag
+
+ // ErrTag indicates an error while parsing flag tags.
+ ErrTag
+
+ // ErrCommandRequired indicates that a command was required but not
+ // specified
+ ErrCommandRequired
+
+ // ErrUnknownCommand indicates that an unknown command was specified.
+ ErrUnknownCommand
+
+ // ErrInvalidChoice indicates an invalid option value which only allows
+ // a certain number of choices.
+ ErrInvalidChoice
+
+ // ErrInvalidTag indicates an invalid tag or invalid use of an existing tag
+ ErrInvalidTag
+)
+
+func (e ErrorType) String() string {
+ switch e {
+ case ErrUnknown:
+ return "unknown"
+ case ErrExpectedArgument:
+ return "expected argument"
+ case ErrUnknownFlag:
+ return "unknown flag"
+ case ErrUnknownGroup:
+ return "unknown group"
+ case ErrMarshal:
+ return "marshal"
+ case ErrHelp:
+ return "help"
+ case ErrNoArgumentForBool:
+ return "no argument for bool"
+ case ErrRequired:
+ return "required"
+ case ErrShortNameTooLong:
+ return "short name too long"
+ case ErrDuplicatedFlag:
+ return "duplicated flag"
+ case ErrTag:
+ return "tag"
+ case ErrCommandRequired:
+ return "command required"
+ case ErrUnknownCommand:
+ return "unknown command"
+ case ErrInvalidChoice:
+ return "invalid choice"
+ case ErrInvalidTag:
+ return "invalid tag"
+ }
+
+ return "unrecognized error type"
+}
+
+// Error represents a parser error. The error returned from Parse is of this
+// type. The error contains both a Type and Message.
+type Error struct {
+ // The type of error
+ Type ErrorType
+
+ // The error message
+ Message string
+}
+
+// Error returns the error's message
+func (e *Error) Error() string {
+ return e.Message
+}
+
+func newError(tp ErrorType, message string) *Error {
+ return &Error{
+ Type: tp,
+ Message: message,
+ }
+}
+
+func newErrorf(tp ErrorType, format string, args ...interface{}) *Error {
+ return newError(tp, fmt.Sprintf(format, args...))
+}
+
+func wrapError(err error) *Error {
+ ret, ok := err.(*Error)
+
+ if !ok {
+ return newError(ErrUnknown, err.Error())
+ }
+
+ return ret
+}