tulip/scope/scope.go

112 lines
2.4 KiB
Go

package scope
import (
"errors"
"strings"
)
var ErrInvalidScope = errors.New("Invalid scope")
var scopeDescription = map[string]string{
"openid": "Verify your user identity",
"name": "Access your name",
"username": "Access your username",
"profile": "Access your public profile",
"email": "Access your email",
"birthdate": "Access your birthdate",
"age": "Access your current age",
"zoneinfo": "Access time zone setting",
"locale": "Access your language setting",
}
func ScopesExist(scope string) bool {
_, err := internalGetScopes(scope, func(key, desc string) string { return "" })
return err == nil
}
// FancyScopeList takes a scope string and outputs a slice of scope descriptions
func FancyScopeList(scope string) (arr []string) {
seen := make(map[string]struct{})
outer:
for {
n := strings.IndexAny(scope, ", ")
var key string
switch n {
case 0:
// first char is matching, no key name found, just continue
scope = scope[1:]
continue outer
case -1:
// no more matching chars, if scope is empty then we are done
if len(scope) == 0 {
return
}
// otherwise set the key and empty scope
key = scope
scope = ""
default:
// set the key and trim from scope
key = scope[:n]
scope = scope[n+1:]
}
// check if key has been seen already
if _, ok := seen[key]; ok {
continue outer
}
// set seen flag
seen[key] = struct{}{}
// output the description
if d := scopeDescription[key]; d != "" {
arr = append(arr, d)
}
}
}
func internalGetScopes(scope string, f func(key, desc string) string) (arr []string, err error) {
seen := make(map[string]struct{})
outer:
for {
n := strings.IndexAny(scope, ", ")
var key string
switch n {
case 0:
// first char is matching, no key name found, just continue
scope = scope[1:]
continue outer
case -1:
// no more matching chars, if scope is empty then we are done
if len(scope) == 0 {
return
}
// otherwise set the key and empty scope
key = scope
scope = ""
default:
// set the key and trim from scope
key = scope[:n]
scope = scope[n+1:]
}
// check if key has been seen already
if _, ok := seen[key]; ok {
continue outer
}
// set seen flag
seen[key] = struct{}{}
// output the description
if d, ok := scopeDescription[key]; ok && d != "" {
arr = append(arr, f(key, d))
continue
}
err = ErrInvalidScope
}
}