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package utils
import (
"encoding/json"
"fmt"
)
type StreamFormatter struct {
json bool
used bool
}
func NewStreamFormatter(json bool) *StreamFormatter {
return &StreamFormatter{json, false}
}
const streamNewline = "\r\n"
var streamNewlineBytes = []byte(streamNewline)
func (sf *StreamFormatter) FormatStream(str string) []byte {
sf.used = true
if sf.json {
b, err := json.Marshal(&JSONMessage{Stream: str})
if err != nil {
return sf.FormatError(err)
}
return append(b, streamNewlineBytes...)
}
return []byte(str + "\r")
}
func (sf *StreamFormatter) FormatStatus(id, format string, a ...interface{}) []byte {
sf.used = true
str := fmt.Sprintf(format, a...)
if sf.json {
b, err := json.Marshal(&JSONMessage{ID: id, Status: str})
if err != nil {
return sf.FormatError(err)
}
return append(b, streamNewlineBytes...)
}
return []byte(str + streamNewline)
}
func (sf *StreamFormatter) FormatError(err error) []byte {
sf.used = true
if sf.json {
jsonError, ok := err.(*JSONError)
if !ok {
jsonError = &JSONError{Message: err.Error()}
}
if b, err := json.Marshal(&JSONMessage{Error: jsonError, ErrorMessage: err.Error()}); err == nil {
return append(b, streamNewlineBytes...)
}
return []byte("{\"error\":\"format error\"}" + streamNewline)
}
return []byte("Error: " + err.Error() + streamNewline)
}
func (sf *StreamFormatter) FormatProgress(id, action string, progress *JSONProgress) []byte {
if progress == nil {
progress = &JSONProgress{}
}
sf.used = true
if sf.json {
b, err := json.Marshal(&JSONMessage{
Status: action,
ProgressMessage: progress.String(),
Progress: progress,
ID: id,
})
if err != nil {
return nil
}
return b
}
endl := "\r"
if progress.String() == "" {
endl += "\n"
}
return []byte(action + " " + progress.String() + endl)
}
func (sf *StreamFormatter) Used() bool {
return sf.used
}
func (sf *StreamFormatter) Json() bool {
return sf.json
}
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