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value.go
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/
value.go
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// Copyright 2019-present Open Networking Foundation.
//
// 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 device
import (
"errors"
"regexp"
)
// NewChangeValue decodes a path and value in to an object
func NewChangeValue(path string, value *TypedValue, isRemove bool) (*ChangeValue, error) {
cv := ChangeValue{
Path: path,
Value: value,
Removed: isRemove,
}
err := IsPathValid(cv.GetPath())
if err != nil {
return nil, err
}
return &cv, nil
}
// IsPathValid tests for valid paths. Path is valid if it
// 1) starts with a slash
// 2) is followed by at least one of alphanumeric or any of : = - _ [ ]
// 3) and any further combinations of 1+2
// Two contiguous slashes are not allowed
// Paths not starting with slash are not allowed
func IsPathValid(path string) error {
r1 := regexp.MustCompile(`(/[a-zA-Z0-9:=\-_,[\]]+)+`)
match := r1.FindString(path)
if path != match {
return errors.New(path)
}
return nil
}