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Daniel Iziourov 2024-04-18 12:17:42 +03:00 committed by GitHub
parent 5a1acea321 86e879bfa9
commit 3a28226107
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2 changed files with 191 additions and 74 deletions
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165
command.go
View file

@ -49,6 +49,36 @@ type Group struct {
// you to define the usage and description as part of your command
// definition to ensure usability.
type Command struct {
// Aliases is an array of aliases that can be used instead of the first word in Use.
Aliases []string
// SuggestFor is an array of command names for which this command will be suggested -
// similar to aliases but only suggests.
SuggestFor []string
// ValidArgs is list of all valid non-flag arguments that are accepted in shell completions
ValidArgs []string
// ArgAliases is List of aliases for ValidArgs.
// These are not suggested to the user in the shell completion,
// but accepted if entered manually.
ArgAliases []string
// groups for subcommands
commandgroups []*Group
// args is actual args parsed from flags.
args []string
// commandCalledAs is the name or alias value used to call this command.
commandCalledAs struct {
name string
called bool
}
// commands is the list of commands supported by this program.
commands []*Command
// Use is the one-line usage message.
// Recommended syntax is as follows:
// [ ] identifies an optional argument. Arguments that are not enclosed in brackets are required.
@ -60,13 +90,6 @@ type Command struct {
// Example: add [-F file | -D dir]... [-f format] profile
Use string
// Aliases is an array of aliases that can be used instead of the first word in Use.
Aliases []string
// SuggestFor is an array of command names for which this command will be suggested -
// similar to aliases but only suggests.
SuggestFor []string
// Short is the short description shown in the 'help' output.
Short string
@ -79,8 +102,44 @@ type Command struct {
// Example is examples of how to use the command.
Example string
// ValidArgs is list of all valid non-flag arguments that are accepted in shell completions
ValidArgs []string
// BashCompletionFunction is custom bash functions used by the legacy bash autocompletion generator.
// For portability with other shells, it is recommended to instead use ValidArgsFunction
BashCompletionFunction string
// Deprecated defines, if this command is deprecated and should print this string when used.
Deprecated string
// Version defines the version for this command. If this value is non-empty and the command does not
// define a "version" flag, a "version" boolean flag will be added to the command and, if specified,
// will print content of the "Version" variable. A shorthand "v" flag will also be added if the
// command does not define one.
Version string
// usageTemplate is usage template defined by user.
usageTemplate string
// helpTemplate is help template defined by user.
helpTemplate string
// helpCommandGroupID is the group id for the helpCommand
helpCommandGroupID string
// completionCommandGroupID is the group id for the completion command
completionCommandGroupID string
// versionTemplate is the version template defined by user.
versionTemplate string
// errPrefix is the error message prefix defined by user.
errPrefix string
// inReader is a reader defined by the user that replaces stdin
inReader io.Reader
// outWriter is a writer defined by the user that replaces stdout
outWriter io.Writer
// errWriter is a writer defined by the user that replaces stderr
errWriter io.Writer
// ValidArgsFunction is an optional function that provides valid non-flag arguments for shell completion.
// It is a dynamic version of using ValidArgs.
// Only one of ValidArgs and ValidArgsFunction can be used for a command.
@ -89,28 +148,10 @@ type Command struct {
// Expected arguments
Args PositionalArgs
// ArgAliases is List of aliases for ValidArgs.
// These are not suggested to the user in the shell completion,
// but accepted if entered manually.
ArgAliases []string
// BashCompletionFunction is custom bash functions used by the legacy bash autocompletion generator.
// For portability with other shells, it is recommended to instead use ValidArgsFunction
BashCompletionFunction string
// Deprecated defines, if this command is deprecated and should print this string when used.
Deprecated string
// Annotations are key/value pairs that can be used by applications to identify or
// group commands or set special options.
Annotations map[string]string
// Version defines the version for this command. If this value is non-empty and the command does not
// define a "version" flag, a "version" boolean flag will be added to the command and, if specified,
// will print content of the "Version" variable. A shorthand "v" flag will also be added if the
// command does not define one.
Version string
// The *Run functions are executed in the following order:
// * PersistentPreRun()
// * PreRun()
@ -142,11 +183,6 @@ type Command struct {
// PersistentPostRunE: PersistentPostRun but returns an error.
PersistentPostRunE func(cmd *Command, args []string) error
// groups for subcommands
commandgroups []*Group
// args is actual args parsed from flags.
args []string
// flagErrorBuf contains all error messages from pflag.
flagErrorBuf *bytes.Buffer
// flags is full set of flags.
@ -167,36 +203,28 @@ type Command struct {
// usageFunc is usage func defined by user.
usageFunc func(*Command) error
// usageTemplate is usage template defined by user.
usageTemplate string
// flagErrorFunc is func defined by user and it's called when the parsing of
// flags returns an error.
flagErrorFunc func(*Command, error) error
// helpTemplate is help template defined by user.
helpTemplate string
// helpFunc is help func defined by user.
helpFunc func(*Command, []string)
// helpCommand is command with usage 'help'. If it's not defined by user,
// cobra uses default help command.
helpCommand *Command
// helpCommandGroupID is the group id for the helpCommand
helpCommandGroupID string
// completionCommandGroupID is the group id for the completion command
completionCommandGroupID string
// parent is a parent command for this command.
parent *Command
// versionTemplate is the version template defined by user.
versionTemplate string
ctx context.Context
// errPrefix is the error message prefix defined by user.
errPrefix string
// Max lengths of commands' string lengths for use in padding.
commandsMaxUseLen int
commandsMaxCommandPathLen int
commandsMaxNameLen int
// inReader is a reader defined by the user that replaces stdin
inReader io.Reader
// outWriter is a writer defined by the user that replaces stdout
outWriter io.Writer
// errWriter is a writer defined by the user that replaces stderr
errWriter io.Writer
// SuggestionsMinimumDistance defines minimum levenshtein distance to display suggestions.
// Must be > 0.
SuggestionsMinimumDistance int
// FParseErrWhitelist flag parse errors to be ignored
FParseErrWhitelist FParseErrWhitelist
@ -206,22 +234,6 @@ type Command struct {
// commandsAreSorted defines, if command slice are sorted or not.
commandsAreSorted bool
// commandCalledAs is the name or alias value used to call this command.
commandCalledAs struct {
name string
called bool
}
ctx context.Context
// commands is the list of commands supported by this program.
commands []*Command
// parent is a parent command for this command.
parent *Command
// Max lengths of commands' string lengths for use in padding.
commandsMaxUseLen int
commandsMaxCommandPathLen int
commandsMaxNameLen int
// TraverseChildren parses flags on all parents before executing child command.
TraverseChildren bool
@ -247,13 +259,13 @@ type Command struct {
// line of a command when printing help or generating docs
DisableFlagsInUseLine bool
// DisableArgsInUseLine will disable the addition of [args] to the usage
// line of a command when printing help or generating docs
DisableArgsInUseLine bool
// DisableSuggestions disables the suggestions based on Levenshtein distance
// that go along with 'unknown command' messages.
DisableSuggestions bool
// SuggestionsMinimumDistance defines minimum levenshtein distance to display suggestions.
// Must be > 0.
SuggestionsMinimumDistance int
}
// Context returns underlying command context. If command was executed
@ -1449,12 +1461,12 @@ func (c *Command) UseLine() string {
} else {
useline = use
}
if c.DisableFlagsInUseLine {
return useline
}
if c.HasAvailableFlags() && !strings.Contains(useline, "[flags]") {
if c.HasAvailableFlags() && !strings.Contains(useline, "[flags]") && !c.DisableFlagsInUseLine {
useline += " [flags]"
}
if c.HasAvailableArgs() && !strings.Contains(useline, "[args]") && !c.DisableArgsInUseLine {
useline += " [args]"
}
return useline
}
@ -1803,6 +1815,11 @@ func (c *Command) HasAvailableInheritedFlags() bool {
return c.InheritedFlags().HasAvailableFlags()
}
// HasAvailableArgs checks if the command has non-nil Args.
func (c *Command) HasAvailableArgs() bool {
return c.Args != nil
}
// Flag climbs up the command tree looking for matching flag.
func (c *Command) Flag(name string) (flag *flag.Flag) {
flag = c.Flags().Lookup(name)

100
command_test.go
View file

@ -2817,3 +2817,103 @@ func TestUnknownFlagShouldReturnSameErrorRegardlessOfArgPosition(t *testing.T) {
})
}
}
func TestUseLine(t *testing.T) {
var testFlagSet pflag.FlagSet
testFlagSet.AddFlag(&pflag.Flag{
Name: "flag_0",
})
testArgs := func(cmd *Command, args []string) error { return nil }
testCases := []struct {
Cmd *Command
UseLine string
}{
{
&Command{
DisableFlagsInUseLine: true,
DisableArgsInUseLine: true,
parent: &Command{
Use: "parent_use_0",
},
flags: &testFlagSet,
Args: testArgs,
Use: "use_0",
},
"parent_use_0 use_0",
},
{
&Command{
DisableFlagsInUseLine: false,
DisableArgsInUseLine: false,
parent: &Command{
Use: "parent_use_1",
},
Use: "use_1",
},
"parent_use_1 use_1",
},
{
&Command{
DisableFlagsInUseLine: false,
DisableArgsInUseLine: false,
Use: "use_2",
},
"use_2",
},
{
&Command{
DisableFlagsInUseLine: false,
DisableArgsInUseLine: true,
parent: &Command{
Use: "parent_use_3",
},
flags: &testFlagSet,
Args: testArgs,
Use: "use_3",
},
"parent_use_3 use_3 [flags]",
},
{
&Command{
DisableFlagsInUseLine: false,
DisableArgsInUseLine: false,
flags: &testFlagSet,
Args: testArgs,
Use: "use_4",
},
"use_4 [flags] [args]",
},
{
&Command{
DisableFlagsInUseLine: false,
DisableArgsInUseLine: false,
Args: testArgs,
Use: "use_5",
},
"use_5 [args]",
},
{
&Command{
DisableFlagsInUseLine: false,
DisableArgsInUseLine: false,
flags: &testFlagSet,
Use: "[flags] use_6",
},
"[flags] use_6",
},
{
&Command{
DisableFlagsInUseLine: false,
DisableArgsInUseLine: false,
Args: testArgs,
Use: "[args] use_7",
},
"[args] use_7",
},
}
for i, tc := range testCases {
if tc.Cmd.UseLine() != tc.UseLine {
t.Errorf("test case no. %d mismatch.\nResult: %s\nExpect: %s", i, tc.Cmd.UseLine(), tc.UseLine)
}
}
}