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util.go
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util.go
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// Copyright © 2020 Simon Fuhrer
//
// 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 displayers
import (
"encoding/json"
"fmt"
"io"
"github.com/hokaccha/go-prettyjson"
"github.com/k0kubun/pp"
"github.com/olekukonko/tablewriter"
"github.com/pkg/errors"
"k8s.io/client-go/util/jsonpath"
"sigs.k8s.io/yaml"
)
func displayYAML(w io.Writer, data interface{}) error {
j, err := json.Marshal(data)
if err != nil {
return errors.Wrap(err, "marshaling to JSON")
}
y, err := yaml.JSONToYAML(j)
if err != nil {
return errors.Wrap(err, "converting JSON to YAML")
}
fmt.Fprintln(w, string(y))
return nil
}
func displayJSON(w io.Writer, data interface{}) error {
j, err := prettyjson.Marshal(data)
if err != nil {
return errors.Wrap(err, "marshaling to JSON")
}
fmt.Fprintln(w, string(j))
return nil
}
func displayPP(w io.Writer, data interface{}) error {
_, err := pp.Println(w, data)
if err != nil {
return errors.Wrap(err, "marshaling to PP")
}
return nil
}
func displayTable(w io.Writer, data [][]string, header []string) error {
table := tablewriter.NewWriter(w)
table.SetHeader(header)
table.SetAutoWrapText(false)
table.SetAutoFormatHeaders(true)
table.SetHeaderAlignment(tablewriter.ALIGN_LEFT)
table.SetAlignment(tablewriter.ALIGN_LEFT)
table.SetCenterSeparator("")
table.SetColumnSeparator("")
table.SetRowSeparator("")
table.SetHeaderLine(false)
table.SetBorder(false)
table.SetTablePadding("\t") // pad with tabs
table.SetNoWhiteSpace(true)
table.AppendBulk(data) // Add Bulk Data
table.Render()
return nil
}
func displayJSONPath(w io.Writer, template string, data interface{}) error {
jp := jsonpath.New("")
err := jp.Parse(template)
if err != nil {
return errors.Wrap(err, "parsing jsonpath")
}
err = jp.Execute(w, data)
if err != nil {
return errors.Wrap(err, "executing jsonpath")
}
return nil
}