435c0d9fc8
This PR switches the Nomad repository from using govendor to Go modules for managing dependencies. Aspects of the Nomad workflow remain pretty much the same. The usual Makefile targets should continue to work as they always did. The API submodule simply defers to the parent Nomad version on the repository, keeping the semantics of API versioning that currently exists.
92 lines
1.7 KiB
Go
92 lines
1.7 KiB
Go
package packngo
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import (
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"bytes"
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"fmt"
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"io"
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"reflect"
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)
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var timestampType = reflect.TypeOf(Timestamp{})
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// Stringify creates a string representation of the provided message
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func Stringify(message interface{}) string {
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var buf bytes.Buffer
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v := reflect.ValueOf(message)
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stringifyValue(&buf, v)
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return buf.String()
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}
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// StreamToString converts a reader to a string
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func StreamToString(stream io.Reader) string {
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buf := new(bytes.Buffer)
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buf.ReadFrom(stream)
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return buf.String()
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}
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// stringifyValue was graciously cargoculted from the goprotubuf library
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func stringifyValue(w io.Writer, val reflect.Value) {
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if val.Kind() == reflect.Ptr && val.IsNil() {
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w.Write([]byte("<nil>"))
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return
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}
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v := reflect.Indirect(val)
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switch v.Kind() {
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case reflect.String:
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fmt.Fprintf(w, `"%s"`, v)
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case reflect.Slice:
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w.Write([]byte{'['})
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for i := 0; i < v.Len(); i++ {
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if i > 0 {
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w.Write([]byte{' '})
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}
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stringifyValue(w, v.Index(i))
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}
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w.Write([]byte{']'})
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return
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case reflect.Struct:
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if v.Type().Name() != "" {
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w.Write([]byte(v.Type().String()))
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}
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// special handling of Timestamp values
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if v.Type() == timestampType {
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fmt.Fprintf(w, "{%s}", v.Interface())
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return
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}
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w.Write([]byte{'{'})
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var sep bool
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for i := 0; i < v.NumField(); i++ {
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fv := v.Field(i)
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if fv.Kind() == reflect.Ptr && fv.IsNil() {
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continue
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}
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if fv.Kind() == reflect.Slice && fv.IsNil() {
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continue
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}
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if sep {
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w.Write([]byte(", "))
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} else {
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sep = true
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}
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w.Write([]byte(v.Type().Field(i).Name))
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w.Write([]byte{':'})
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stringifyValue(w, fv)
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}
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w.Write([]byte{'}'})
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default:
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if v.CanInterface() {
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fmt.Fprint(w, v.Interface())
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}
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}
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}
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