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Copy pathcategory.go
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195 lines (160 loc) · 4.3 KB
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package cli
import "sort"
// CommandCategories interface allows for category manipulation
type CommandCategories interface {
// AddCommand adds a command to a category, creating a new category if necessary.
AddCommand(category string, command *Command)
// Categories returns a slice of categories sorted by name
Categories() []CommandCategory
}
type commandCategories []*commandCategory
func newCommandCategories() CommandCategories {
ret := commandCategories([]*commandCategory{})
return &ret
}
func (c *commandCategories) Less(i, j int) bool {
return lexicographicLess((*c)[i].Name(), (*c)[j].Name())
}
func (c *commandCategories) Len() int {
return len(*c)
}
func (c *commandCategories) Swap(i, j int) {
(*c)[i], (*c)[j] = (*c)[j], (*c)[i]
}
func (c *commandCategories) AddCommand(category string, command *Command) {
for _, commandCategory := range []*commandCategory(*c) {
if commandCategory.name == category {
commandCategory.commands = append(commandCategory.commands, command)
return
}
}
newVal := append(*c,
&commandCategory{name: category, commands: []*Command{command}})
*c = newVal
}
func (c *commandCategories) Categories() []CommandCategory {
ret := make([]CommandCategory, len(*c))
for i, cat := range *c {
ret[i] = cat
}
return ret
}
// CommandCategory is a category containing commands.
type CommandCategory interface {
// Name returns the category name string
Name() string
// VisibleCommands returns a slice of the Commands with Hidden=false
VisibleCommands() []*Command
}
type commandCategory struct {
name string
commands []*Command
}
func (c *commandCategory) Name() string {
return c.name
}
func (c *commandCategory) VisibleCommands() []*Command {
if c.commands == nil {
c.commands = []*Command{}
}
var ret []*Command
for _, command := range c.commands {
if !command.Hidden {
ret = append(ret, command)
}
}
return ret
}
// FlagCategories interface allows for category manipulation
type FlagCategories interface {
// AddFlags adds a flag to a category, creating a new category if necessary.
AddFlag(category string, fl Flag)
// VisibleCategories returns a slice of visible flag categories sorted by name
VisibleCategories() []VisibleFlagCategory
}
type defaultFlagCategories struct {
m map[string]*defaultVisibleFlagCategory
}
func newFlagCategories() FlagCategories {
return &defaultFlagCategories{
m: map[string]*defaultVisibleFlagCategory{},
}
}
func newFlagCategoriesFromFlags(fs []Flag) FlagCategories {
fc := newFlagCategories()
var categorized bool
for _, fl := range fs {
if cf, ok := fl.(CategorizableFlag); ok {
visible := false
if vf, ok := fl.(VisibleFlag); ok {
visible = vf.IsVisible()
}
if cat := cf.GetCategory(); cat != "" && visible {
fc.AddFlag(cat, fl)
categorized = true
}
}
}
if categorized {
for _, fl := range fs {
if cf, ok := fl.(CategorizableFlag); ok {
visible := false
if vf, ok := fl.(VisibleFlag); ok {
visible = vf.IsVisible()
}
if cf.GetCategory() == "" && visible {
fc.AddFlag("", fl)
}
}
}
}
return fc
}
func (f *defaultFlagCategories) AddFlag(category string, fl Flag) {
if _, ok := f.m[category]; !ok {
f.m[category] = &defaultVisibleFlagCategory{name: category, m: map[string]Flag{}}
}
f.m[category].m[fl.String()] = fl
}
func (f *defaultFlagCategories) VisibleCategories() []VisibleFlagCategory {
catNames := []string{}
for name := range f.m {
catNames = append(catNames, name)
}
sort.Strings(catNames)
ret := make([]VisibleFlagCategory, len(catNames))
for i, name := range catNames {
ret[i] = f.m[name]
}
return ret
}
// VisibleFlagCategory is a category containing flags.
type VisibleFlagCategory interface {
// Name returns the category name string
Name() string
// Flags returns a slice of VisibleFlag sorted by name
Flags() []Flag
}
type defaultVisibleFlagCategory struct {
name string
m map[string]Flag
}
func (fc *defaultVisibleFlagCategory) Name() string {
return fc.name
}
func (fc *defaultVisibleFlagCategory) Flags() []Flag {
vfNames := []string{}
for flName, fl := range fc.m {
if vf, ok := fl.(VisibleFlag); ok {
if vf.IsVisible() {
vfNames = append(vfNames, flName)
}
}
}
sort.Strings(vfNames)
ret := make([]Flag, len(vfNames))
for i, flName := range vfNames {
ret[i] = fc.m[flName]
}
return ret
}