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improve deprecation message

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Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
This commit is contained in:
Victor Vieux 2014-03-12 00:51:46 +00:00
parent 02be9306bc
commit f7fe084946
2 changed files with 15 additions and 3 deletions
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15
mflag/flag.go
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@ -820,9 +820,20 @@ func (f *FlagSet) parseOne() (bool, string, error) {
f.actual = make(map[string]*Flag)
}
f.actual[name] = flag
for _, n := range flag.Names {
for i, n := range flag.Names {
if n == fmt.Sprintf("#%s", name) {
fmt.Fprintf(f.out(), "Warning: '-%s' is deprecated, it will be removed soon. See usage.\n", name)
replacement := ""
for j := i; j < len(flag.Names); j++ {
if flag.Names[j][0] != '#' {
replacement = flag.Names[j]
break
}
}
if replacement != "" {
fmt.Fprintf(f.out(), "Warning: '-%s' is deprecated, it will be replaced by '-%s' soon. See usage.\n", name, replacement)
} else {
fmt.Fprintf(f.out(), "Warning: '-%s' is deprecated, it will be removed soon. See usage.\n", name)
}
}
}
return true, "", nil