move flag error functions to common

cmd/common.go

@@ -0,0 +1,40 @@
+/*
+Copyright © 2024 filifa
+
+This program is free software: you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation, either version 3 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+package cmd
+
+import (
+	"errors"
+	"sort"
+	"strings"
+)
+
+func keys[V any](m map[string]V) []string {
+	keys := make([]string, len(m))
+
+	i := 0
+	for k := range m {
+		keys[i] = k
+		i++
+	}
+
+	return keys
+}
+
+func flagValueError(allowed []string) error {
+	sort.Strings(allowed)
+	allowedList := strings.Join(allowed, ", ")
+	return errors.New("must be one of " + allowedList)
+}

cmd/teamflag.go

@@ -16,8 +16,6 @@ this program. If not, see <http://www.gnu.org/licenses/>.
 package cmd
 
 import (
-	"errors"
-	"sort"
 	"strings"
 
 	"scm.dairydemon.net/filifa/mlblive/cmd/internal/statsapi"
@@ -56,24 +54,6 @@ var teamIDs = map[string]statsapi.TeamID{
 	"mil": statsapi.MIL,
 }
 
-func keys[V any](m map[string]V) []string {
-	keys := make([]string, len(m))
-
-	i := 0
-	for k := range m {
-		keys[i] = k
-		i++
-	}
-
-	return keys
-}
-
-func flagValueError(allowed []string) error {
-	sort.Strings(allowed)
-	allowedList := strings.Join(allowed, ", ")
-	return errors.New("must be one of " + allowedList)
-}
-
 type teamFlag string
 
 func (t *teamFlag) String() string {