57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
package cmd
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import (
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"errors"
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"fmt"
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"strings"
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"git.iamthefij.com/iamthefij/slog"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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)
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var (
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ErrMissingArgument = errors.New("missing positional argument")
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ErrTooManyRequiredArgs = errors.New("more args specified as required than provided")
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)
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func bindFlag(flagname string) {
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slog.OnErrFatalf(
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viper.BindPFlag(flagname, rootCmd.PersistentFlags().Lookup(flagname)),
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"failed binding flag: "+flagname,
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)
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}
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func WrapPositionalArgs(cmd *cobra.Command, positionalArgs []string, numRequired int) *cobra.Command {
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// TODO: Find a better place for this validation
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if numRequired > len(positionalArgs) {
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panic(ErrTooManyRequiredArgs)
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}
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// Add required args to Use
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if numRequired > 0 {
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cmd.Use = fmt.Sprintf("%s <%s>", cmd.Use, strings.Join(positionalArgs[0:numRequired], "> <"))
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}
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// Add optional args to Use
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optionalArgs := positionalArgs[numRequired:]
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if len(optionalArgs) > 0 {
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cmd.Use = fmt.Sprintf("%s [%s]", cmd.Use, strings.Join(optionalArgs, "] ["))
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}
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oldArgs := cmd.Args
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cmd.Args = func(cmd *cobra.Command, args []string) error {
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lastArgPos := len(args)
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if lastArgPos < numRequired {
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return fmt.Errorf("missing argument `%s` in position %d: %w", positionalArgs[lastArgPos], lastArgPos, ErrMissingArgument)
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}
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if oldArgs != nil {
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return oldArgs(cmd, args)
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}
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return nil
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}
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return cmd
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}
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