yq/cmd/compare.go
2020-02-03 14:15:12 +11:00

73 lines
2.1 KiB
Go

package cmd
import (
"bufio"
"bytes"
"github.com/kylelemons/godebug/diff"
"github.com/mikefarah/yq/v3/pkg/yqlib"
errors "github.com/pkg/errors"
"github.com/spf13/cobra"
)
func createCompareCmd() *cobra.Command {
var cmdCompare = &cobra.Command{
Use: "compare [yaml_file_a] [yaml_file_b]",
Aliases: []string{"x"},
Short: "yq x data1.yml data2.yml ",
Example: `
yq x - data2.yml # reads from stdin
`,
Long: "Compares two yaml files, prints the difference. same ",
RunE: compareDocuments,
}
cmdCompare.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
cmdCompare.PersistentFlags().StringVarP(&printMode, "printMode", "p", "v", "print mode (v (values, default), p (paths), pv (path and value pairs)")
cmdCompare.PersistentFlags().BoolVarP(&prettyPrint, "prettyPrint", "P", false, "pretty print (does not have an affect with json output)")
cmdCompare.PersistentFlags().StringVarP(&defaultValue, "defaultValue", "D", "", "default value printed when there are no results")
return cmdCompare
}
func compareDocuments(cmd *cobra.Command, args []string) error {
var path = ""
if len(args) < 2 {
return errors.New("Must provide at 2 yaml files")
} else if len(args) > 2 {
path = args[2]
}
var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
if errorParsingDocIndex != nil {
return errorParsingDocIndex
}
var matchingNodesA []*yqlib.NodeContext
var matchingNodesB []*yqlib.NodeContext
var errorReadingStream error
matchingNodesA, errorReadingStream = readYamlFile(args[0], path, updateAll, docIndexInt)
if errorReadingStream != nil {
return errorReadingStream
}
matchingNodesB, errorReadingStream = readYamlFile(args[1], path, updateAll, docIndexInt)
if errorReadingStream != nil {
return errorReadingStream
}
if prettyPrint {
setStyle(matchingNodesA, 0)
setStyle(matchingNodesB, 0)
}
var dataBufferA bytes.Buffer
var dataBufferB bytes.Buffer
printResults(matchingNodesA, bufio.NewWriter(&dataBufferA))
printResults(matchingNodesB, bufio.NewWriter(&dataBufferB))
cmd.Print(diff.Diff(dataBufferA.String(), dataBufferB.String()))
return nil
}