mirror of
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53 lines
1.5 KiB
Go
53 lines
1.5 KiB
Go
package cmd
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import (
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errors "github.com/pkg/errors"
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"github.com/spf13/cobra"
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)
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func createReadCmd() *cobra.Command {
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var cmdRead = &cobra.Command{
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Use: "read [yaml_file] [path_expression]",
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Aliases: []string{"r"},
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Short: "yq r [--printMode/-p pv] sample.yaml 'b.e(name==fr*).value'",
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Example: `
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yq read things.yaml 'a.b.c'
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yq r - 'a.b.c' # reads from stdin
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yq r things.yaml 'a.*.c'
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yq r things.yaml 'a.**.c' # deep splat
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yq r things.yaml 'a.(child.subchild==co*).c'
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yq r -d1 things.yaml 'a.array[0].blah'
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yq r things.yaml 'a.array[*].blah'
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yq r -- things.yaml '--key-starting-with-dashes.blah'
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`,
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Long: "Outputs the value of the given path in the yaml file to STDOUT",
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RunE: readProperty,
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}
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cmdRead.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
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cmdRead.PersistentFlags().StringVarP(&printMode, "printMode", "p", "v", "print mode (v (values, default), p (paths), pv (path and value pairs)")
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return cmdRead
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}
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func readProperty(cmd *cobra.Command, args []string) error {
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var path = ""
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if len(args) < 1 {
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return errors.New("Must provide filename")
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} else if len(args) > 1 {
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path = args[1]
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}
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var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
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if errorParsingDocIndex != nil {
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return errorParsingDocIndex
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}
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matchingNodes, errorReadingStream := readYamlFile(args[0], path, updateAll, docIndexInt)
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if errorReadingStream != nil {
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return errorReadingStream
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}
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return printResults(matchingNodes, cmd)
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}
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