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Documentation & housecleaning

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spf13 2013-09-11 09:20:59 -04:00
parent 7ba2df2eff
commit 8d87882095
1 changed files with 14 additions and 41 deletions
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55
cobra.go
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@ -26,47 +26,36 @@ import (
var _ = flag.ContinueOnError
type Flag interface {
Args() []string
}
type Flags interface {
Lookup(string) *Flag
VisitAll(fn func(*Flag))
Parse(arguments []string) error
}
// A Commander holds the configuration for the command line tool.
type Commander struct {
// A Commander is also a Command for top level and global help & flags
Command
//ExitOnError, ContinueOnError or PanicOnError
behavior flag.ErrorHandling
args []string
}
// Provide the user with a new commander.
// Not of a lot of value today, was intended to do more than just
// create a new commander.
func NewCommander() (c *Commander) {
c = new(Commander)
return
}
func (c *Commander) setFlagBehavior(b flag.ErrorHandling) error {
if b == flag.ExitOnError || b == flag.ContinueOnError || b == flag.PanicOnError {
c.behavior = b
return nil
}
return fmt.Errorf("%v is not a valid behavior", b)
}
// Name for commander, should match application name
func (c *Commander) SetName(name string) {
c.name = name
}
// os.Args[1:] by default, if desired, can be overridden
// particularly useful when testing.
func (c *Commander) SetArgs(a []string) {
c.args = a
}
// Call execute to use the args (os.Args[1:] by default)
// and run through the command tree finding appropriate matches
// for commands and then corresponding flags.
func (c *Commander) Execute() (err error) {
if len(c.args) == 0 {
err = c.execute(os.Args[1:])
@ -182,6 +171,8 @@ func (c *Command) Usage(depth ...int) string {
}
}
// For use in determining which flags have been assigned to which commands
// and which persist
func (c *Command) DebugFlags() {
fmt.Println("DebugFlags called on", c.Name())
var debugflags func(*Command)
@ -257,7 +248,7 @@ func (c *Command) HasSubCommands() bool {
return len(c.commands) > 0
}
// Determine if the command has children commands
// Determine if the command is a child command
func (c *Command) HasParent() bool {
return c.parent != nil
}
@ -295,10 +286,12 @@ func (c *Command) ResetFlags() {
c.pflags.SetOutput(c.flagErrorBuf)
}
// Does the command contain flags (local not persistent)
func (c *Command) HasFlags() bool {
return c.Flags().HasFlags()
}
// Does the command contain persistent flags
func (c *Command) HasPersistentFlags() bool {
return c.PersistentFlags().HasFlags()
}
@ -355,23 +348,3 @@ func (c *Command) mergePersistentFlags() {
rmerge(c)
}
// Climbs up the command tree parsing flags from top to bottom
func (c *Command) ParsePersistentFlags(args []string) (err error) {
if !c.HasParent() || (c.parent.HasPersistentFlags() && c.parent.PersistentFlags().Parsed()) {
if c.HasPersistentFlags() {
err = c.PersistentFlags().Parse(args)
if err != nil {
return err
}
}
} else {
if c.HasParent() && c.parent.HasPersistentFlags() {
err = c.parent.ParsePersistentFlags(args)
if err != nil {
return err
}
}
}
return
}