/
keyvaluelist.go
99 lines (72 loc) · 1.61 KB
/
keyvaluelist.go
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package common
import (
"fmt"
"sort"
"strings"
)
type KeyValueList []string
func (kvl *KeyValueList) find(key string) int {
for i, l := range *kvl {
ss := strings.Split(l, "=")
if ss[0] == key {
return i
}
}
return -1
}
func (kvl *KeyValueList) getValue(line string) string {
return line[strings.Index(line, "=")+1:]
}
func (kvl *KeyValueList) getKey(line string) string {
return line[:strings.Index(line, "=")]
}
func (kvl *KeyValueList) Put(key string, value string) error {
if key == "" {
return fmt.Errorf("key cannot be null")
}
item := fmt.Sprintf("%s=%s", key, value)
index := kvl.find(key)
if index == -1 {
*kvl = append(*kvl, item)
} else {
(*kvl)[index] = item
}
sort.Strings(*kvl)
return nil
}
func (kvl *KeyValueList) Get(key string) (string, error) {
if key == "" {
return "", fmt.Errorf("key cannot be null")
}
index := kvl.find(key)
if index == -1 {
return "", fmt.Errorf("key not found")
}
return kvl.getValue((*kvl)[index]), nil
}
func (kvl *KeyValueList) Remove(key string) (string, error) {
if key == "" {
return "", fmt.Errorf("key cannot be null")
}
index := kvl.find(key)
if index == -1 {
return "", fmt.Errorf("key not found")
}
item := kvl.getValue((*kvl)[index])
*kvl = append((*kvl)[:index], (*kvl)[index+1:]...)
return item, nil
}
func (kvl *KeyValueList) Keys() []string {
keys := make([]string, 0)
for _, kv := range *kvl {
keys = append(keys, kvl.getKey(kv))
}
return keys
}
func (kvl *KeyValueList) Values() []string {
keys := make([]string, 0)
for _, kv := range *kvl {
keys = append(keys, kvl.getValue(kv))
}
return keys
}