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adapter.go
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adapter.go
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package adapter
import (
"bytes"
"errors"
"github.com/casbin/casbin/v2/model"
"github.com/casbin/casbin/v2/persist"
"github.com/casbin/casbin/v2/util"
"strings"
)
type Adapter struct {
Line string
}
func NewAdapter(line string) *Adapter {
return &Adapter{
Line: line,
}
}
func (sa *Adapter) LoadPolicy(model model.Model) error {
if sa.Line == "" {
return errors.New("invalid line, line cannot be empty")
}
strs := strings.Split(sa.Line, "\n")
for _, str := range strs {
if str == "" {
continue
}
persist.LoadPolicyLine(str, model)
}
return nil
}
func (sa *Adapter) SavePolicy(model model.Model) error {
var tmp bytes.Buffer
for ptype, ast := range model["p"] {
for _, rule := range ast.Policy {
tmp.WriteString(ptype + ", ")
tmp.WriteString(util.ArrayToString(rule))
tmp.WriteString("\n")
}
}
for ptype, ast := range model["g"] {
for _, rule := range ast.Policy {
tmp.WriteString(ptype + ", ")
tmp.WriteString(util.ArrayToString(rule))
tmp.WriteString("\n")
}
}
sa.Line = strings.TrimRight(tmp.String(), "\n")
return nil
}
func (sa *Adapter) AddPolicy(sec string, ptype string, rule []string) error {
return errors.New("not implemented")
}
func (sa *Adapter) RemovePolicy(sec string, ptype string, rule []string) error {
sa.Line = ""
return nil
}
func (sa *Adapter) RemoveFilteredPolicy(sec string, ptype string, fieldIndex int, fieldValues ...string) error {
return errors.New("not implemented")
}