/
option_utils.go
62 lines (56 loc) · 1.27 KB
/
option_utils.go
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package commands
import (
"strconv"
kingpin "github.com/alecthomas/kingpin/v2"
)
func boolVar(name string, ptr **bool) kingpin.Action {
return func(pc *kingpin.ParseContext) error {
value := lookupKingpinValue(name, pc)
if value != nil {
arg := *value == "true"
*ptr = &arg
}
return nil
}
}
func intVar(name string, ptr **int) kingpin.Action {
return func(pc *kingpin.ParseContext) error {
value := lookupKingpinValue(name, pc)
if value != nil {
n, err := strconv.Atoi(*value)
if err != nil {
panic(err)
}
*ptr = &n
}
return nil
}
}
func stringVar(name string, ptr **string) kingpin.Action {
return func(pc *kingpin.ParseContext) error {
value := lookupKingpinValue(name, pc)
if value != nil {
arg := *value
*ptr = &arg
}
return nil
}
}
// From https://github.com/alecthomas/kingpin/issues/184
// Replace w/ kingpin.v3 API when available
func lookupKingpinValue(name string, pc *kingpin.ParseContext) *string {
for _, el := range pc.Elements {
switch el.Clause.(type) {
case *kingpin.ArgClause:
if (el.Clause).(*kingpin.ArgClause).Model().Name == name {
return el.Value
}
case *kingpin.FlagClause:
if (el.Clause).(*kingpin.FlagClause).Model().Name == name {
return el.Value
}
}
}
def := ""
return &def
}