Add verbose option to print filename when modified #25
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main.go
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| @@ -95,7 +96,7 @@ func main() { | |||
| for f := range ch { | |||
| wg.Add(1) | |||
| go func(f *file) { | |||
| err := addLicense(f.path, f.mode, t, data) | |||
| err := addLicense(f.path, f.mode, t, data, *verbose) | |||
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I wonder if it's better to do the verbose logging here for two reasons:
- cluttering arguments: the addLicense func never logs an error so why should it log anything else
- there's already if err != nil { ... } right below this line to print an error. It feels like log.Printf("%v modified", path) belongs here. So, maybe something like:
defer wg.Done() // move it at the top
err := addLicense(f.path, f.mode, t, data)
if err != nil {
log.Printf("%s: %v", f.path, err)
return
}
if verbose {
log.Printf("%s modified", path)
}This also avoid making invalid claim "path/to/file modified" it there were an I/O error.
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Because if this function does not return an error, it doesn't mean the file has been modified. Specifically if err != nil || hasLicense(b) will return nil if we consider that the file already has a license.
We could change the definition of addLicense to return (modified bool, err error).
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ah sorry you're right!
yeah, I like the idea of addLicense(...) (modified bool, err error).
let's do that?
main.go
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| @@ -177,6 +178,9 @@ func addLicense(path string, fmode os.FileMode, tmpl *template.Template, data *c | |||
| lic = append(line, lic...) | |||
| } | |||
| b = append(lic, b...) | |||
| if verbose { | |||
| log.Printf("%v modified", path) | |||
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Go usually invites to use %s for strings.
tweksteen
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Adds the -v option which prints the name of the files that have been modified.
Adds the -v option which prints the name of the files that have been modified.