yq/cmd/root.go

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package cmd
import (
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"os"
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"github.com/mikefarah/yq/v4/pkg/yqlib"
"github.com/spf13/cobra"
logging "gopkg.in/op/go-logging.v1"
)
func New() *cobra.Command {
var rootCmd = &cobra.Command{
Use: "yq",
Short: "yq is a lightweight and portable command-line YAML processor.",
Long: `yq is a portable command-line YAML processor (https://github.com/mikefarah/yq/)
See https://mikefarah.gitbook.io/yq/ for detailed documentation and examples.`,
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Example: `
# yq defaults to 'eval' command if no command is specified. See "yq eval --help" for more examples.
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# read the "stuff" node from "myfile.yml"
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yq '.stuff' < myfile.yml
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# update myfile.yml in place
yq -i '.stuff = "foo"' myfile.yml
# print contents of sample.json as idiomatic YAML
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yq -P sample.json
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`,
RunE: func(cmd *cobra.Command, args []string) error {
if version {
cmd.Print(GetVersionDisplay())
return nil
}
return evaluateSequence(cmd, args)
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},
PersistentPreRun: func(cmd *cobra.Command, args []string) {
cmd.SetOut(cmd.OutOrStdout())
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var format = logging.MustStringFormatter(
`%{color}%{time:15:04:05} %{shortfunc} [%{level:.4s}]%{color:reset} %{message}`,
)
var backend = logging.AddModuleLevel(
logging.NewBackendFormatter(logging.NewLogBackend(os.Stderr, "", 0), format))
if verbose {
backend.SetLevel(logging.DEBUG, "")
} else {
backend.SetLevel(logging.ERROR, "")
}
logging.SetBackend(backend)
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yqlib.InitExpressionParser()
yqlib.XMLPreferences.AttributePrefix = xmlAttributePrefix
yqlib.XMLPreferences.ContentName = xmlContentName
yqlib.XMLPreferences.StrictMode = xmlStrictMode
},
}
rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "verbose mode")
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rootCmd.PersistentFlags().BoolVarP(&outputToJSON, "tojson", "j", false, "(deprecated) output as json. Set indent to 0 to print json in one line.")
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err := rootCmd.PersistentFlags().MarkDeprecated("tojson", "please use -o=json instead")
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if err != nil {
panic(err)
}
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rootCmd.PersistentFlags().StringVarP(&outputFormat, "output-format", "o", "yaml", "[yaml|y|json|j|props|p|xml|x] output format type.")
rootCmd.PersistentFlags().StringVarP(&inputFormat, "input-format", "p", "yaml", "[yaml|y|props|p|xml|x] parse format for input. Note that json is a subset of yaml.")
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rootCmd.PersistentFlags().StringVar(&xmlAttributePrefix, "xml-attribute-prefix", "+", "prefix for xml attributes")
rootCmd.PersistentFlags().StringVar(&xmlContentName, "xml-content-name", "+content", "name for xml content (if no attribute name is present).")
rootCmd.PersistentFlags().BoolVar(&xmlStrictMode, "xml-strict-mode", false, "enables strict parsing of XML. See https://pkg.go.dev/encoding/xml for more details.")
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rootCmd.PersistentFlags().BoolVarP(&nullInput, "null-input", "n", false, "Don't read input, simply evaluate the expression given. Useful for creating docs from scratch.")
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rootCmd.PersistentFlags().BoolVarP(&noDocSeparators, "no-doc", "N", false, "Don't print document separators (---)")
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rootCmd.PersistentFlags().IntVarP(&indent, "indent", "I", 2, "sets indent level for output")
rootCmd.Flags().BoolVarP(&version, "version", "V", false, "Print version information and quit")
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rootCmd.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the file inplace of first file given.")
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rootCmd.PersistentFlags().BoolVarP(&unwrapScalar, "unwrapScalar", "", true, "unwrap scalar, print the value with no quotes, colors or comments")
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rootCmd.PersistentFlags().BoolVarP(&prettyPrint, "prettyPrint", "P", false, "pretty print, shorthand for '... style = \"\"'")
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rootCmd.PersistentFlags().BoolVarP(&exitStatus, "exit-status", "e", false, "set exit status if there are no matches or null or false is returned")
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rootCmd.PersistentFlags().BoolVarP(&forceColor, "colors", "C", false, "force print with colors")
rootCmd.PersistentFlags().BoolVarP(&forceNoColor, "no-colors", "M", false, "force print with no colors")
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rootCmd.PersistentFlags().StringVarP(&frontMatter, "front-matter", "f", "", "(extract|process) first input as yaml front-matter. Extract will pull out the yaml content, process will run the expression against the yaml content, leaving the remaining data intact")
rootCmd.PersistentFlags().StringVarP(&forceExpression, "expression", "", "", "forcibly set the expression argument. Useful when yq argument detection thinks your expression is a file.")
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rootCmd.PersistentFlags().BoolVarP(&leadingContentPreProcessing, "header-preprocess", "", true, "Slurp any header comments and separators before processing expression.")
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rootCmd.PersistentFlags().StringVarP(&splitFileExp, "split-exp", "s", "", "print each result (or doc) into a file named (exp). [exp] argument must return a string. You can use $index in the expression as the result counter.")
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rootCmd.PersistentFlags().StringVarP(&expressionFile, "from-file", "", "", "Load expression from specified file.")
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rootCmd.AddCommand(
createEvaluateSequenceCommand(),
createEvaluateAllCommand(),
completionCmd,
)
return rootCmd
}