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Merge pull request #528 from urfave/backport-no-arg-reordering

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Backport no argument reordering as an option
This commit is contained in:
Jesse Szwedko 2016-09-11 20:00:11 -07:00 committed by GitHub
commit 61f519fe5e
2 changed files with 25 additions and 16 deletions
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13
command.go
View File

@ -46,6 +46,11 @@ type Command struct {
Flags []Flag
// Treat all flags as normal arguments if true
SkipFlagParsing bool
// Skip argument reordering which attempts to move flags before arguments,
// but only works if all flags appear after all arguments. This behavior was
// removed n version 2 since it only works under specific conditions so we
// backport here by exposing it as an option for compatibility.
SkipArgReorder bool
// Boolean to hide built-in help command
HideHelp bool
// Boolean to hide this command from help or completion
@ -89,7 +94,9 @@ func (c Command) Run(ctx *Context) (err error) {
set := flagSet(c.Name, c.Flags)
set.SetOutput(ioutil.Discard)
if !c.SkipFlagParsing {
if c.SkipFlagParsing {
err = set.Parse(append([]string{"--"}, ctx.Args().Tail()...))
} else if !c.SkipArgReorder {
firstFlagIndex := -1
terminatorIndex := -1
for index, arg := range ctx.Args() {
@ -121,10 +128,6 @@ func (c Command) Run(ctx *Context) (err error) {
} else {
err = set.Parse(ctx.Args().Tail())
}
} else {
if c.SkipFlagParsing {
err = set.Parse(append([]string{"--"}, ctx.Args().Tail()...))
}
}
if err != nil {

28
command_test.go
View File

@ -13,12 +13,18 @@ func TestCommandFlagParsing(t *testing.T) {
cases := []struct {
testArgs []string
skipFlagParsing bool
skipArgReorder bool
expectedErr error
}{
{[]string{"blah", "blah", "-break"}, false, errors.New("flag provided but not defined: -break")}, // Test normal "not ignoring flags" flow
{[]string{"blah", "blah"}, true, nil}, // Test SkipFlagParsing without any args that look like flags
{[]string{"blah", "-break"}, true, nil}, // Test SkipFlagParsing with random flag arg
{[]string{"blah", "-help"}, true, nil}, // Test SkipFlagParsing with "special" help flag arg
// Test normal "not ignoring flags" flow
{[]string{"test-cmd", "blah", "blah", "-break"}, false, false, errors.New("flag provided but not defined: -break")},
// Test no arg reorder
{[]string{"test-cmd", "blah", "blah", "-break"}, false, true, nil},
{[]string{"test-cmd", "blah", "blah"}, true, false, nil}, // Test SkipFlagParsing without any args that look like flags
{[]string{"test-cmd", "blah", "-break"}, true, false, nil}, // Test SkipFlagParsing with random flag arg
{[]string{"test-cmd", "blah", "-help"}, true, false, nil}, // Test SkipFlagParsing with "special" help flag arg
}
for _, c := range cases {
@ -30,15 +36,15 @@ func TestCommandFlagParsing(t *testing.T) {
context := NewContext(app, set, nil)
command := Command{
Name: "test-cmd",
Aliases: []string{"tc"},
Usage: "this is for testing",
Description: "testing",
Action: func(_ *Context) error { return nil },
Name: "test-cmd",
Aliases: []string{"tc"},
Usage: "this is for testing",
Description: "testing",
Action: func(_ *Context) error { return nil },
SkipFlagParsing: c.skipFlagParsing,
SkipArgReorder: c.skipArgReorder,
}
command.SkipFlagParsing = c.skipFlagParsing
err := command.Run(context)
expect(t, err, c.expectedErr)