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parameters.go
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parameters.go
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package linode
import (
"bytes"
"net/url"
"sort"
)
type (
// Parameters represents the parameters that are passed for an API call.
Parameters map[string]string
)
// Get gets the parameter associated with the given key. If no parameter is
// associated with the key, Get returns the empty string.
func (p Parameters) Get(key string) string {
if p == nil {
return ""
}
value, ok := p[key]
if !ok {
return ""
}
return value
}
// Set sets the key to value. It replaces any existing value.
func (p Parameters) Set(key, value string) {
p[key] = value
}
// Del deletes the parameter associated with key.
func (p Parameters) Del(key string) {
delete(p, key)
}
// Encode encodes the parameters into "URL encoded" form ("bar=baz&foo=quux")
// sorted by key.
func (p Parameters) Encode() string {
var buf bytes.Buffer
keys := make([]string, 0, len(p))
for k := range p {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
if buf.Len() > 0 {
buf.WriteByte('&')
}
buf.WriteString(url.QueryEscape(k) + "=")
buf.WriteString(url.QueryEscape(p[k]))
}
return buf.String()
}