mirror of
https://github.com/gravitational/teleport.git
synced 2026-09-24 16:17:11 +08:00
52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package utils
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import (
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"bytes"
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"unicode"
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"github.com/ghodss/yaml"
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)
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// ToJSON converts a single YAML document into a JSON document
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// or returns an error. If the document appears to be JSON the
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// YAML decoding path is not used (so that error messages are
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// JSON specific).
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// Creds to: k8s.io for the code
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func ToJSON(data []byte) ([]byte, error) {
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if hasJSONPrefix(data) {
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return data, nil
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}
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return yaml.YAMLToJSON(data)
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}
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var jsonPrefix = []byte("{")
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// hasJSONPrefix returns true if the provided buffer appears to start with
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// a JSON open brace.
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func hasJSONPrefix(buf []byte) bool {
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return hasPrefix(buf, jsonPrefix)
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}
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// Return true if the first non-whitespace bytes in buf is
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// prefix.
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func hasPrefix(buf []byte, prefix []byte) bool {
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trim := bytes.TrimLeftFunc(buf, unicode.IsSpace)
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return bytes.HasPrefix(trim, prefix)
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}
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