mirror of
https://github.com/rclone/rclone.git
synced 2024-11-28 19:34:55 +01:00
144 lines
3.3 KiB
Go
144 lines
3.3 KiB
Go
// Package configmap provides an abstraction for reading and writing config
|
|
package configmap
|
|
|
|
import (
|
|
"sort"
|
|
"strings"
|
|
)
|
|
|
|
// Getter provides an interface to get config items
|
|
type Getter interface {
|
|
// Get should get an item with the key passed in and return
|
|
// the value. If the item is found then it should return true,
|
|
// otherwise false.
|
|
Get(key string) (value string, ok bool)
|
|
}
|
|
|
|
// Setter provides an interface to set config items
|
|
type Setter interface {
|
|
// Set should set an item into persistent config store.
|
|
Set(key, value string)
|
|
}
|
|
|
|
// Mapper provides an interface to read and write config
|
|
type Mapper interface {
|
|
Getter
|
|
Setter
|
|
}
|
|
|
|
// Map provides a wrapper around multiple Setter and
|
|
// Getter interfaces.
|
|
type Map struct {
|
|
setters []Setter
|
|
getters []Getter
|
|
override []Getter
|
|
}
|
|
|
|
// New returns an empty Map
|
|
func New() *Map {
|
|
return &Map{}
|
|
}
|
|
|
|
// AddGetter appends a getter onto the end of the getters
|
|
func (c *Map) AddGetter(getter Getter) *Map {
|
|
c.getters = append(c.getters, getter)
|
|
return c
|
|
}
|
|
|
|
// AddOverrideGetter appends a getter onto the end of the getters
|
|
//
|
|
// It also appends it onto the override getters for GetOverride
|
|
func (c *Map) AddOverrideGetter(getter Getter) *Map {
|
|
c.getters = append(c.getters, getter)
|
|
c.override = append(c.override, getter)
|
|
return c
|
|
}
|
|
|
|
// AddSetter appends a setter onto the end of the setters
|
|
func (c *Map) AddSetter(setter Setter) *Map {
|
|
c.setters = append(c.setters, setter)
|
|
return c
|
|
}
|
|
|
|
// ClearSetters removes all the setters set so far
|
|
func (c *Map) ClearSetters() *Map {
|
|
c.setters = nil
|
|
return c
|
|
}
|
|
|
|
// get gets an item with the key passed in and return the value from
|
|
// the first getter. If the item is found then it returns true,
|
|
// otherwise false.
|
|
func (c *Map) get(key string, getters []Getter) (value string, ok bool) {
|
|
for _, do := range getters {
|
|
value, ok = do.Get(key)
|
|
if ok {
|
|
return value, ok
|
|
}
|
|
}
|
|
return "", false
|
|
}
|
|
|
|
// Get gets an item with the key passed in and return the value from
|
|
// the first getter. If the item is found then it returns true,
|
|
// otherwise false.
|
|
func (c *Map) Get(key string) (value string, ok bool) {
|
|
return c.get(key, c.getters)
|
|
}
|
|
|
|
// GetOverride gets an item with the key passed in and return the
|
|
// value from the first override getter. If the item is found then it
|
|
// returns true, otherwise false.
|
|
func (c *Map) GetOverride(key string) (value string, ok bool) {
|
|
return c.get(key, c.override)
|
|
}
|
|
|
|
// Set sets an item into all the stored setters.
|
|
func (c *Map) Set(key, value string) {
|
|
for _, do := range c.setters {
|
|
do.Set(key, value)
|
|
}
|
|
}
|
|
|
|
// Simple is a simple Mapper for testing
|
|
type Simple map[string]string
|
|
|
|
// Get the value
|
|
func (c Simple) Get(key string) (value string, ok bool) {
|
|
value, ok = c[key]
|
|
return value, ok
|
|
}
|
|
|
|
// Set the value
|
|
func (c Simple) Set(key, value string) {
|
|
c[key] = value
|
|
}
|
|
|
|
// String the map value the same way the config parser does, but with
|
|
// sorted keys for reproducability.
|
|
func (c Simple) String() string {
|
|
var ks = make([]string, 0, len(c))
|
|
for k := range c {
|
|
ks = append(ks, k)
|
|
}
|
|
sort.Strings(ks)
|
|
var out strings.Builder
|
|
for _, k := range ks {
|
|
if out.Len() > 0 {
|
|
out.WriteRune(',')
|
|
}
|
|
out.WriteString(k)
|
|
out.WriteRune('=')
|
|
out.WriteRune('\'')
|
|
for _, ch := range c[k] {
|
|
out.WriteRune(ch)
|
|
// Escape ' as ''
|
|
if ch == '\'' {
|
|
out.WriteRune(ch)
|
|
}
|
|
}
|
|
out.WriteRune('\'')
|
|
}
|
|
return out.String()
|
|
}
|