89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
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package arguments
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import (
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"github.com/hashicorp/terraform/tfdiags"
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)
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// Output represents the command-line arguments for the output command.
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type Output struct {
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// Name identifies which root module output to show. If empty, show all
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// outputs.
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Name string
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// StatePath is an optional path to a state file, from which outputs will
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// be loaded.
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StatePath string
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// ViewType specifies which output format to use: human, JSON, or "raw".
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ViewType ViewType
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}
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// ParseOutput processes CLI arguments, returning an Output value and errors.
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// If errors are encountered, an Output value is still returned representing
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// the best effort interpretation of the arguments.
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func ParseOutput(args []string) (*Output, tfdiags.Diagnostics) {
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var diags tfdiags.Diagnostics
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output := &Output{}
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var jsonOutput, rawOutput bool
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var statePath string
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cmdFlags := defaultFlagSet("output")
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cmdFlags.BoolVar(&jsonOutput, "json", false, "json")
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cmdFlags.BoolVar(&rawOutput, "raw", false, "raw")
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cmdFlags.StringVar(&statePath, "state", "", "path")
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if err := cmdFlags.Parse(args); err != nil {
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diags = diags.Append(tfdiags.Sourceless(
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tfdiags.Error,
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"Failed to parse command-line flags",
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err.Error(),
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))
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}
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args = cmdFlags.Args()
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if len(args) > 1 {
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diags = diags.Append(tfdiags.Sourceless(
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tfdiags.Error,
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"Unexpected argument",
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"The output command expects exactly one argument with the name of an output variable or no arguments to show all outputs.",
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))
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}
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if jsonOutput && rawOutput {
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diags = diags.Append(tfdiags.Sourceless(
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tfdiags.Error,
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"Invalid output format",
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"The -raw and -json options are mutually-exclusive.",
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))
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// Since the desired output format is unknowable, fall back to default
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jsonOutput = false
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rawOutput = false
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}
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output.StatePath = statePath
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if len(args) > 0 {
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output.Name = args[0]
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}
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if rawOutput && output.Name == "" {
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diags = diags.Append(tfdiags.Sourceless(
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tfdiags.Error,
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"Output name required",
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"You must give the name of a single output value when using the -raw option.",
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))
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}
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switch {
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case jsonOutput:
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output.ViewType = ViewJSON
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case rawOutput:
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output.ViewType = ViewRaw
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default:
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output.ViewType = ViewHuman
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}
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return output, diags
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}
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