open-vault/helper/strutil/strutil.go

60 lines
1.3 KiB
Go
Raw Normal View History

2016-04-06 00:30:38 +00:00
package strutil
2016-05-05 14:22:28 +00:00
import (
"sort"
"strings"
)
2016-04-06 00:30:38 +00:00
// StrListContains looks for a string in a list of strings.
func StrListContains(haystack []string, needle string) bool {
for _, item := range haystack {
if item == needle {
return true
}
}
return false
}
// StrListSubset checks if a given list is a subset
// of another set
func StrListSubset(super, sub []string) bool {
for _, item := range sub {
if !StrListContains(super, item) {
return false
}
}
return true
}
2016-05-05 14:22:28 +00:00
// Parses a comma separated list of strings into a slice of strings.
// The return slice will be sorted and will not contain duplicate or
// empty items. The values will be converted to lower case.
func ParseStrings(input string) []string {
var parsed []string
if input == "" {
// Don't return nil
return parsed
}
return RemoveDuplicates(strings.Split(input, ","))
}
// Removes duplicate and empty elements from a slice of strings.
// This also converts the items in the slice to lower case and
// returns a sorted slice.
func RemoveDuplicates(items []string) []string {
itemsMap := map[string]bool{}
for _, item := range items {
item = strings.ToLower(strings.TrimSpace(item))
if item == "" {
continue
}
itemsMap[item] = true
}
items = []string{}
for item, _ := range itemsMap {
items = append(items, item)
}
sort.Strings(items)
return items
}