diff options
Diffstat (limited to 'cmd/krino/main.go')
| -rw-r--r-- | cmd/krino/main.go | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/cmd/krino/main.go b/cmd/krino/main.go index 7a6a5f7..29da31a 100644 --- a/cmd/krino/main.go +++ b/cmd/krino/main.go @@ -61,7 +61,8 @@ Sort the files in the directories listed in krino.conf by their rules. type globals struct { yes, dry, verbose, json bool noColor, noPager bool - minAge string // --min-age as given; "" when not + minAge string // --min-age as given + minAgeSet bool // --min-age was given, even as an empty value conf string } @@ -127,10 +128,26 @@ func flagSet(name string, g *globals) *flag.FlagSet { fs.BoolVar(&g.noColor, "no-color", g.noColor, "") fs.BoolVar(&g.noPager, "no-pager", g.noPager, "") fs.BoolVar(&g.noPager, "P", g.noPager, "") - fs.StringVar(&g.minAge, "min-age", g.minAge, "") + fs.Var(minAgeValue{g}, "min-age", "") return fs } +// minAgeValue is --min-age as a flag.Value, so that a flag given with an +// empty value (--min-age=) is told apart from one not given at all. +type minAgeValue struct{ g *globals } + +func (v minAgeValue) String() string { + if v.g == nil { + return "" + } + return v.g.minAge +} + +func (v minAgeValue) Set(s string) error { + v.g.minAge, v.g.minAgeSet = s, true + return nil +} + // parse parses args into fs. On -h it prints the usage and returns (0, false); // on a bad flag it reports it and returns (2, false). func parse(fs *flag.FlagSet, args []string, stdout, stderr io.Writer) (int, bool) { |