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90 lines
2.5 KiB
90 lines
2.5 KiB
4 years ago
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/*
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Copyright © 2020 The k3d Author(s)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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package util
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import (
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"encoding/json"
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"fmt"
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"os"
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"sort"
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"strings"
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"github.com/liggitt/tabwriter"
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k3d "github.com/rancher/k3d/v4/pkg/types"
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log "github.com/sirupsen/logrus"
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"gopkg.in/yaml.v2"
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)
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type NodePrinter interface {
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Print(*tabwriter.Writer, *k3d.Node)
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}
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type NodePrinterFunc func(*tabwriter.Writer, *k3d.Node)
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func (npf NodePrinterFunc) Print(writter *tabwriter.Writer, node *k3d.Node) {
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npf(writter, node)
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}
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// PrintNodes prints a list of nodes, either as a table or as a JSON/YAML listing
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func PrintNodes(nodes []*k3d.Node, outputFormat string, headers *[]string, nodePrinter NodePrinter) {
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outputFormat = strings.ToLower(outputFormat)
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tabwriter := tabwriter.NewWriter(os.Stdout, 6, 4, 3, ' ', tabwriter.RememberWidths)
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defer tabwriter.Flush()
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if outputFormat != "json" && outputFormat != "yaml" {
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if headers != nil {
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_, err := fmt.Fprintf(tabwriter, "%s\n", strings.Join(*headers, "\t"))
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if err != nil {
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log.Fatalln("Failed to print headers")
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}
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}
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}
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sort.Slice(nodes, func(i, j int) bool {
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return nodes[i].Name < nodes[j].Name
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})
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if outputFormat == "json" || outputFormat == "yaml" {
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var b []byte
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var err error
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switch outputFormat {
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case "json":
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b, err = json.Marshal(nodes)
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case "yaml":
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b, err = yaml.Marshal(nodes)
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}
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if err != nil {
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fmt.Println(err)
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return
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}
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fmt.Println(string(b))
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} else {
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for _, node := range nodes {
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if !(outputFormat == "json" || outputFormat == "yaml") {
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nodePrinter.Print(tabwriter, node)
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}
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}
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}
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}
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