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package shared
import (
"strings"
"github.com/google/shlex"
"github.com/spf13/cobra"
)
// ValidAliasNameFunc returns a function that will check if the given string
// is a valid alias name. A name is valid if:
// - it does not shadow an existing command,
// - it is not nested under a command that is runnable,
// - it is not nested under a command that does not exist.
func ValidAliasNameFunc(cmd *cobra.Command) func(string) bool {
return func(args string) bool {
split, err := shlex.Split(args)
if err != nil || len(split) == 0 {
return false
}
rootCmd := cmd.Root()
foundCmd, foundArgs, _ := rootCmd.Find(split)
if foundCmd != nil && !foundCmd.Runnable() && len(foundArgs) == 1 {
return true
}
return false
}
}
// ValidAliasExpansionFunc returns a function that will check if the given string
// is a valid alias expansion. An expansion is valid if:
// - it is a shell expansion,
// - it is a non-shell expansion that corresponds to an existing command, extension, or alias.
func ValidAliasExpansionFunc(cmd *cobra.Command) func(string) bool {
return func(expansion string) bool {
if strings.HasPrefix(expansion, "!") {
return true
}
split, err := shlex.Split(expansion)
if err != nil || len(split) == 0 {
return false
}
rootCmd := cmd.Root()
cmd, _, _ = rootCmd.Find(split)
return cmd != rootCmd
}
}
|
