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Merge pull request #739 from oderwat/oderwat-translations
Adding the possibility to translate the msg.Data before output.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| package cli | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "github.com/google/shlex" | ||
| "os/exec" | ||
| "strings" | ||
| "text/template" | ||
| ) | ||
|
|
||
| func outPutMSGBody(data []byte, filter, subject, stream string) { | ||
| if len(data) == 0 { | ||
| fmt.Println("nil body") | ||
| return | ||
| } | ||
|
|
||
| data, err := filterDataThroughCmd(data, filter, subject, stream) | ||
| if err != nil { | ||
| // using q here so raw binary data will be escaped | ||
| fmt.Printf("%q\nError while translating msg body: %s\n\n", data, err.Error()) | ||
| return | ||
| } | ||
| output := string(data) | ||
| fmt.Println(output) | ||
| if !strings.HasSuffix(output, "\n") { | ||
| fmt.Println() | ||
| } | ||
| } | ||
|
|
||
| func filterDataThroughCmd(data []byte, filter, subject, stream string) ([]byte, error) { | ||
| if filter == "" { | ||
| return data, nil | ||
| } | ||
| funcMap := template.FuncMap{ | ||
| "Subject": func() string { return subject }, | ||
| "Stream": func() string { return stream }, | ||
| } | ||
|
|
||
| tmpl, err := template.New("translate").Funcs(funcMap).Parse(filter) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| var builder strings.Builder | ||
| err = tmpl.Execute(&builder, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| parts, err := shlex.Split(builder.String()) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("the filter command line could not be parsed: %w", err) | ||
| } | ||
| cmd := parts[0] | ||
| args := parts[1:] | ||
|
|
||
| runner := exec.Command(cmd, args...) | ||
| // pass the message as string to stdin | ||
| runner.Stdin = bytes.NewReader(data) | ||
| // maybe we want to do something on error? | ||
| return runner.CombinedOutput() | ||
| } |
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