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-rw-r--r--vendor/github.com/spf13/cobra/args.go89
1 files changed, 89 insertions, 0 deletions
diff --git a/vendor/github.com/spf13/cobra/args.go b/vendor/github.com/spf13/cobra/args.go
new file mode 100644
index 00000000..a5d8a927
--- /dev/null
+++ b/vendor/github.com/spf13/cobra/args.go
@@ -0,0 +1,89 @@
+package cobra
+
+import (
+ "fmt"
+)
+
+type PositionalArgs func(cmd *Command, args []string) error
+
+// Legacy arg validation has the following behaviour:
+// - root commands with no subcommands can take arbitrary arguments
+// - root commands with subcommands will do subcommand validity checking
+// - subcommands will always accept arbitrary arguments
+func legacyArgs(cmd *Command, args []string) error {
+ // no subcommand, always take args
+ if !cmd.HasSubCommands() {
+ return nil
+ }
+
+ // root command with subcommands, do subcommand checking.
+ if !cmd.HasParent() && len(args) > 0 {
+ return fmt.Errorf("unknown command %q for %q%s", args[0], cmd.CommandPath(), cmd.findSuggestions(args[0]))
+ }
+ return nil
+}
+
+// NoArgs returns an error if any args are included.
+func NoArgs(cmd *Command, args []string) error {
+ if len(args) > 0 {
+ return fmt.Errorf("unknown command %q for %q", args[0], cmd.CommandPath())
+ }
+ return nil
+}
+
+// OnlyValidArgs returns an error if any args are not in the list of ValidArgs.
+func OnlyValidArgs(cmd *Command, args []string) error {
+ if len(cmd.ValidArgs) > 0 {
+ for _, v := range args {
+ if !stringInSlice(v, cmd.ValidArgs) {
+ return fmt.Errorf("invalid argument %q for %q%s", v, cmd.CommandPath(), cmd.findSuggestions(args[0]))
+ }
+ }
+ }
+ return nil
+}
+
+// ArbitraryArgs never returns an error.
+func ArbitraryArgs(cmd *Command, args []string) error {
+ return nil
+}
+
+// MinimumNArgs returns an error if there is not at least N args.
+func MinimumNArgs(n int) PositionalArgs {
+ return func(cmd *Command, args []string) error {
+ if len(args) < n {
+ return fmt.Errorf("requires at least %d arg(s), only received %d", n, len(args))
+ }
+ return nil
+ }
+}
+
+// MaximumNArgs returns an error if there are more than N args.
+func MaximumNArgs(n int) PositionalArgs {
+ return func(cmd *Command, args []string) error {
+ if len(args) > n {
+ return fmt.Errorf("accepts at most %d arg(s), received %d", n, len(args))
+ }
+ return nil
+ }
+}
+
+// ExactArgs returns an error if there are not exactly n args.
+func ExactArgs(n int) PositionalArgs {
+ return func(cmd *Command, args []string) error {
+ if len(args) != n {
+ return fmt.Errorf("accepts %d arg(s), received %d", n, len(args))
+ }
+ return nil
+ }
+}
+
+// RangeArgs returns an error if the number of args is not within the expected range.
+func RangeArgs(min int, max int) PositionalArgs {
+ return func(cmd *Command, args []string) error {
+ if len(args) < min || len(args) > max {
+ return fmt.Errorf("accepts between %d and %d arg(s), received %d", min, max, len(args))
+ }
+ return nil
+ }
+}