glenux-archive/spf13--cobra
1
0
Fork 0
mirror of https://github.com/spf13/cobra synced 2024-11-16 18:57:08 +00:00
Code Issues Projects Releases Packages Wiki Activity

Code commentary

Browse source
This commit is contained in:
Ahsanul Haque 2014-12-13 11:05:43 +06:00 committed by spf13
parent 4745f1fd64
commit bb7f17f9b1
2 changed files with 13 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
cobra.go
View file

@ -31,12 +31,16 @@ var initializers []func()
// Set this to true to enable it // Set this to true to enable it
var EnablePrefixMatching bool = false var EnablePrefixMatching bool = false
//OnInitialize takes a series of func() arguments and appends them to a slice of func().
func OnInitialize(y ...func()) { func OnInitialize(y ...func()) {
for _, x := range y { for _, x := range y {
initializers = append(initializers, x) initializers = append(initializers, x)
} }
} }
//Gt takes two types and checks whether the first type is greater than the second. In case of types Arrays, Chans,
//Maps and Slices, Gt will compare their lengths. Ints are compared directly while strings are first parsed as
//ints and then compared.
func Gt(a interface{}, b interface{}) bool { func Gt(a interface{}, b interface{}) bool {
var left, right int64 var left, right int64
av := reflect.ValueOf(a) av := reflect.ValueOf(a)
@ -64,6 +68,7 @@ func Gt(a interface{}, b interface{}) bool {
return left > right return left > right
} }
//Eq takes two types and checks whether they are equal. Supported types are int and string. Unsupported types will panic.
func Eq(a interface{}, b interface{}) bool { func Eq(a interface{}, b interface{}) bool {
av := reflect.ValueOf(a) av := reflect.ValueOf(a)
bv := reflect.ValueOf(b) bv := reflect.ValueOf(b)
@ -79,6 +84,7 @@ func Eq(a interface{}, b interface{}) bool {
return false return false
} }
//rpad adds padding to the right of a string
func rpad(s string, padding int) string { func rpad(s string, padding int) string {
template := fmt.Sprintf("%%-%ds", padding) template := fmt.Sprintf("%%-%ds", padding)
return fmt.Sprintf(template, s) return fmt.Sprintf(template, s)

13
command.go
View file

@ -11,9 +11,8 @@
// See the License for the specific language governing permissions and // See the License for the specific language governing permissions and
// limitations under the License. // limitations under the License.
// Commands similar to git, go tools and other modern CLI tools //Package cobra is a commander providing a simple interface to create powerful modern CLI interfaces.
// inspired by go, go-Commander, gh and subcommand //In addition to providing an interface, Cobra simultaneously provides a controller to organize your application code.
package cobra package cobra
import ( import (
@ -59,7 +58,7 @@ type Command struct {
flagErrorBuf *bytes.Buffer flagErrorBuf *bytes.Buffer
cmdErrorBuf *bytes.Buffer cmdErrorBuf *bytes.Buffer
args []string args []strings // actual args parsed from flags
output *io.Writer // nil means stderr; use Out() method instead output *io.Writer // nil means stderr; use Out() method instead
usageFunc func(*Command) error // Usage can be defined by application usageFunc func(*Command) error // Usage can be defined by application
usageTemplate string // Can be defined by Application usageTemplate string // Can be defined by Application
@ -173,6 +172,7 @@ func (c *Command) UsagePadding() int {
var minCommandPathPadding int = 11 var minCommandPathPadding int = 11
//
func (c *Command) CommandPathPadding() int { func (c *Command) CommandPathPadding() int {
if c.parent == nil || minCommandPathPadding > c.parent.commandsMaxCommandPathLen { if c.parent == nil || minCommandPathPadding > c.parent.commandsMaxCommandPathLen {
return minCommandPathPadding return minCommandPathPadding
@ -506,11 +506,12 @@ func (c *Command) ResetCommands() {
c.cmdErrorBuf.Reset() c.cmdErrorBuf.Reset()
} }
//Commands returns a slice of child commands.
func (c *Command) Commands() []*Command { func (c *Command) Commands() []*Command {
return c.commands return c.commands
} }
// Add one or many commands as children of this // AddCommand adds one or more commands to this parent command.
func (c *Command) AddCommand(cmds ...*Command) { func (c *Command) AddCommand(cmds ...*Command) {
for i, x := range cmds { for i, x := range cmds {
if cmds[i] == c { if cmds[i] == c {
@ -574,7 +575,7 @@ func (c *Command) UsageString() string {
return bb.String() return bb.String()
} }
// The full path to this command // CommandPath returns the full path to this command.
func (c *Command) CommandPath() string { func (c *Command) CommandPath() string {
str := c.Name() str := c.Name()
x := c x := c