Beego/vendor/github.com/casbin/casbin/util/util.go

106 lines
2.4 KiB
Go

// Copyright 2017 The casbin Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"sort"
"strings"
)
// EscapeAssertion escapes the dots in the assertion, because the expression evaluation doesn't support such variable names.
func EscapeAssertion(s string) string {
s = strings.Replace(s, "r.", "r_", -1)
s = strings.Replace(s, "p.", "p_", -1)
return s
}
// RemoveComments removes the comments starting with # in the text.
func RemoveComments(s string) string {
pos := strings.Index(s, "#")
if pos == -1 {
return s
}
return strings.TrimSpace(s[0:pos])
}
// ArrayEquals determines whether two string arrays are identical.
func ArrayEquals(a []string, b []string) bool {
if len(a) != len(b) {
return false
}
for i, v := range a {
if v != b[i] {
return false
}
}
return true
}
// Array2DEquals determines whether two 2-dimensional string arrays are identical.
func Array2DEquals(a [][]string, b [][]string) bool {
if len(a) != len(b) {
return false
}
for i, v := range a {
if !ArrayEquals(v, b[i]) {
return false
}
}
return true
}
// ArrayRemoveDuplicates removes any duplicated elements in a string array.
func ArrayRemoveDuplicates(s *[]string) {
found := make(map[string]bool)
j := 0
for i, x := range *s {
if !found[x] {
found[x] = true
(*s)[j] = (*s)[i]
j++
}
}
*s = (*s)[:j]
}
// ArrayToString gets a printable string for a string array.
func ArrayToString(s []string) string {
return strings.Join(s, ", ")
}
// ParamsToString gets a printable string for variable number of parameters.
func ParamsToString(s ...string) string {
return strings.Join(s, ", ")
}
// SetEquals determines whether two string sets are identical.
func SetEquals(a []string, b []string) bool {
if len(a) != len(b) {
return false
}
sort.Strings(a)
sort.Strings(b)
for i, v := range a {
if v != b[i] {
return false
}
}
return true
}