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fcall.go
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package p9p
import "fmt"
// FcallType encodes the message type for the target Fcall.
type FcallType uint8
// Definitions for Fcall's used in 9P2000.
const (
Tversion FcallType = iota + 100
Rversion
Tauth
Rauth
Tattach
Rattach
Terror
Rerror
Tflush
Rflush
Twalk
Rwalk
Topen
Ropen
Tcreate
Rcreate
Tread
Rread
Twrite
Rwrite
Tclunk
Rclunk
Tremove
Rremove
Tstat
Rstat
Twstat
Rwstat
Tmax
)
func (fct FcallType) String() string {
switch fct {
case Tversion:
return "Tversion"
case Rversion:
return "Rversion"
case Tauth:
return "Tauth"
case Rauth:
return "Rauth"
case Tattach:
return "Tattach"
case Rattach:
return "Rattach"
case Terror:
// invalid.
return "Terror"
case Rerror:
return "Rerror"
case Tflush:
return "Tflush"
case Rflush:
return "Rflush"
case Twalk:
return "Twalk"
case Rwalk:
return "Rwalk"
case Topen:
return "Topen"
case Ropen:
return "Ropen"
case Tcreate:
return "Tcreate"
case Rcreate:
return "Rcreate"
case Tread:
return "Tread"
case Rread:
return "Rread"
case Twrite:
return "Twrite"
case Rwrite:
return "Rwrite"
case Tclunk:
return "Tclunk"
case Rclunk:
return "Rclunk"
case Tremove:
return "Tremove"
case Rremove:
return "Rremove"
case Tstat:
return "Tstat"
case Rstat:
return "Rstat"
case Twstat:
return "Twstat"
case Rwstat:
return "Rwstat"
default:
return "Tunknown"
}
}
// Fcall defines the fields for sending a 9p formatted message. The type will
// be introspected from the Message implementation.
type Fcall struct {
Type FcallType
Tag Tag
Message Message
}
func newFcall(tag Tag, msg Message) *Fcall {
return &Fcall{
Type: msg.Type(),
Tag: tag,
Message: msg,
}
}
func newErrorFcall(tag Tag, err error) *Fcall {
var msg Message
switch v := err.(type) {
case MessageRerror:
msg = v
case *MessageRerror:
msg = *v
default:
msg = MessageRerror{Ename: v.Error()}
}
return &Fcall{
Type: Rerror,
Tag: tag,
Message: msg,
}
}
func (fc *Fcall) String() string {
return fmt.Sprintf("%v(%v) %v", fc.Type, fc.Tag, string9p(fc.Message))
}