/
list.go
54 lines (45 loc) · 1.63 KB
/
list.go
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/*
Copyright 2023 Red Hat Inc.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is
distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied. See the License for the specific language governing permissions and limitations under the
License.
*/
// This file contains functions useful for printing lists in a format that is easy to read for
// humans in log files.
package logging
import (
"fmt"
"strings"
)
// All generates a human readable representation of the given list of strings, for use in a log
// file. It puts quotes around each item, separates the first items with commas and the last with
// the word 'and'.
func All(items []string) string {
return list(items, "and")
}
// Any generates a human readable representation of the given list of strings, for use in a log
// file. It puts quotes around each item, separates the first items with commas and the last with
// the word 'or'.
func Any(items []string) string {
return list(items, "or")
}
func list(items []string, conjunction string) string {
count := len(items)
if count == 0 {
return ""
}
quoted := make([]string, len(items))
for i, item := range items {
quoted[i] = fmt.Sprintf("'%s'", item)
}
if count == 1 {
return quoted[0]
}
head := quoted[0 : count-1]
tail := quoted[count-1]
return fmt.Sprintf("%s %s %s", strings.Join(head, ", "), conjunction, tail)
}