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Fix a bug in traversal with detecting flags.

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Signed-off-by: Daniel Nephin <dnephin@gmail.com>
This commit is contained in:
Daniel Nephin 2016-08-09 11:03:27 -04:00
parent 419884c85a
commit d34f8d4094
2 changed files with 12 additions and 7 deletions
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8
command.go
View file

@ -479,8 +479,8 @@ func argsMinusFirstX(args []string, x string) []string {
}
func isFlagArg(arg string) bool {
return ((len(arg) >= 3 && arg[0] == '-') ||
(len(arg) >= 2 && arg[1] == '-' && arg[1] != '-'))
return ((len(arg) >= 3 && arg[1] == '-') ||
(len(arg) >= 2 && arg[0] == '-' && arg[1] != '-'))
}
// Find the target command given the args and command tree
@ -551,19 +551,23 @@ func (c *Command) Traverse(args []string) (*Command, []string, error) {
for i, arg := range args {
switch {
// A long flag with a space separated value
case strings.HasPrefix(arg, "--") && !strings.Contains(arg, "="):
// TODO: this isn't quite right, we should really check ahead for 'true' or 'false'
inFlag = !hasNoOptDefVal(arg[2:], c.Flags())
flags = append(flags, arg)
continue
// A short flag with a space separated value
case strings.HasPrefix(arg, "-") && !strings.Contains(arg, "=") && len(arg) == 2 && !shortHasNoOptDefVal(arg[1:], c.Flags()):
inFlag = true
flags = append(flags, arg)
continue
// The value for a flag
case inFlag:
inFlag = false
flags = append(flags, arg)
continue
// A flag without a value, or with an `=` separated value
case isFlagArg(arg):
flags = append(flags, arg)
continue

3
command_test.go
View file

@ -354,12 +354,13 @@ func TestTraverseWithParentFlags(t *testing.T) {
TraverseChildren: true,
}
cmd.Flags().String("foo", "", "foo things")
cmd.Flags().BoolP("goo", "g", false, "foo things")
sub := &Command{Use: "next"}
sub.Flags().String("add", "", "add things")
cmd.AddCommand(sub)
c, args, err := cmd.Traverse([]string{"--foo", "ok", "next", "--add"})
c, args, err := cmd.Traverse([]string{"-g", "--foo", "ok", "next", "--add"})
if err != nil {
t.Fatalf("Expected no error: %s", err)
}