func (cmd *Help) Execute(c flags.FlagContext) error {
if len(c.Args()) == 0 {
help.ShowHelp(cmd.ui.Writer(), help.GetHelpTemplate())
} else {
cmdName := c.Args()[0]
if commandregistry.Commands.CommandExists(cmdName) {
cmd.ui.Say(commandregistry.Commands.CommandUsage(cmdName))
} else {
//check plugin commands
found := false
for _, meta := range cmd.config.Plugins() {
for _, c := range meta.Commands {
if c.Name == cmdName || c.Alias == cmdName {
output := T("NAME:") + "\n"
output += " " + c.Name + " - " + c.HelpText + "\n"
if c.Alias != "" {
output += "\n" + T("ALIAS:") + "\n"
output += " " + c.Alias + "\n"
}
output += "\n" + T("USAGE:") + "\n"
output += " " + c.UsageDetails.Usage + "\n"
if len(c.UsageDetails.Options) > 0 {
output += "\n" + T("OPTIONS:") + "\n"
//find longest name length
l := 0
for n := range c.UsageDetails.Options {
if len(n) > l {
l = len(n)
}
}
for n, f := range c.UsageDetails.Options {
output += " -" + n + strings.Repeat(" ", 7+(l-len(n))) + f + "\n"
}
}
cmd.ui.Say(output)
found = true
}
}
}
if !found {
return errors.New("'" + cmdName + "' is not a registered command. See 'cf help'")
}
}
}
return nil
}
func main() {
commands_loader.Load()
defer handlePanics(deps.TeePrinter)
defer deps.Config.Close()
//handles `cf` | `cf -h` || `cf -help`
if len(os.Args) == 1 || os.Args[1] == "--help" || os.Args[1] == "-help" ||
os.Args[1] == "--h" || os.Args[1] == "-h" {
help.ShowHelp(help.GetHelpTemplate())
os.Exit(0)
}
//handle `cf -v` for cf version
if len(os.Args) == 2 && (os.Args[1] == "-v" || os.Args[1] == "--version") {
deps.Ui.Say(os.Args[0] + " version " + cf.Version + "-" + cf.BuiltOnDate)
os.Exit(0)
}
//handle `cf --build`
if len(os.Args) == 2 && (os.Args[1] == "--build" || os.Args[1] == "-b") {
deps.Ui.Say(T("{{.CFName}} was built with Go version: {{.GoVersion}}",
map[string]interface{}{
"CFName": os.Args[0],
"GoVersion": runtime.Version(),
}))
os.Exit(0)
}
//handles `cf [COMMAND] -h ...`
//rearrage args to `cf help COMMAND` and let `command help` to print out usage
if requestHelp(os.Args[2:]) {
os.Args[2] = os.Args[1]
os.Args[1] = "help"
}
//run core command
cmd := os.Args[1]
if cmdRegistry.CommandExists(cmd) {
meta := cmdRegistry.FindCommand(os.Args[1]).MetaData()
fc := flags.NewFlagContext(meta.Flags)
fc.SkipFlagParsing(meta.SkipFlagParsing)
err := fc.Parse(os.Args[2:]...)
if err != nil {
deps.Ui.Failed("Incorrect Usage\n\n" + err.Error() + "\n\n" + cmdRegistry.CommandUsage(cmd))
}
cmdRegistry.SetCommand(cmdRegistry.FindCommand(cmd).SetDependency(deps, false))
cfCmd := cmdRegistry.FindCommand(cmd)
reqs, err := cfCmd.Requirements(requirements.NewFactory(deps.Ui, deps.Config, deps.RepoLocator), fc)
if err != nil {
deps.Ui.Failed(err.Error())
}
for _, r := range reqs {
if !r.Execute() {
os.Exit(1)
}
}
cfCmd.Execute(fc)
os.Exit(0)
}
//non core command, try plugin command
rpcService := newCliRpcServer(deps.TeePrinter, deps.TeePrinter)
pluginsConfig := plugin_config.NewPluginConfig(func(err error) { deps.Ui.Failed(fmt.Sprintf("Error read/writing plugin config: %s, ", err.Error())) })
pluginList := pluginsConfig.Plugins()
ran := rpc.RunMethodIfExists(rpcService, os.Args[1:], pluginList)
if !ran {
deps.Ui.Say("'" + os.Args[1] + T("' is not a registered command. See 'cf help'"))
os.Exit(1)
}
}
func main() {
commands_loader.Load()
defer handlePanics(deps.TeePrinter)
defer deps.Config.Close()
//////////////// non-codegangsta path ///////////////////////
//handles `cf` | `cf -h` || `cf -help`
if len(os.Args) == 1 || os.Args[1] == "--help" || os.Args[1] == "-help" ||
os.Args[1] == "--h" || os.Args[1] == "-h" {
help.ShowHelp(help.GetHelpTemplate())
os.Exit(0)
}
//handle `cf -v` for cf version
if len(os.Args) == 2 && os.Args[1] == "-v" {
deps.Ui.Say(os.Args[0] + " version " + cf.Version + "-" + cf.BuiltOnDate)
os.Exit(0)
}
//handles `cf [COMMAND] -h ...`
//rearrage args to `cf help COMMAND` and let `command help` to print out usage
if requestHelp(os.Args[2:]) {
os.Args[2] = os.Args[1]
os.Args[1] = "help"
}
if len(os.Args) > 1 {
cmd := os.Args[1]
if cmdRegistry.CommandExists(cmd) {
meta := cmdRegistry.FindCommand(os.Args[1]).MetaData()
fc := flags.NewFlagContext(meta.Flags)
fc.SkipFlagParsing(meta.SkipFlagParsing)
if requestHelp(os.Args[2:]) {
deps.Ui.Say(cmdRegistry.CommandUsage(cmd))
os.Exit(0)
} else {
err := fc.Parse(os.Args[2:]...)
if err != nil {
deps.Ui.Failed("Incorrect Usage\n\n" + err.Error() + "\n\n" + cmdRegistry.CommandUsage(cmd))
}
}
cmdRegistry.SetCommand(cmdRegistry.FindCommand(cmd).SetDependency(deps, false))
cfCmd := cmdRegistry.FindCommand(cmd)
reqs, err := cfCmd.Requirements(requirements.NewFactory(deps.Ui, deps.Config, deps.RepoLocator), fc)
if err != nil {
deps.Ui.Failed(err.Error())
}
for _, r := range reqs {
if !r.Execute() {
os.Exit(1)
}
}
cfCmd.Execute(fc)
os.Exit(0)
}
}
//////////////////////////////////////////
rpcService := newCliRpcServer(deps.TeePrinter, deps.TeePrinter)
cmdFactory := command_factory.NewFactory(deps.Ui, deps.Config, deps.ManifestRepo, deps.RepoLocator, deps.PluginConfig, rpcService)
requirementsFactory := requirements.NewFactory(deps.Ui, deps.Config, deps.RepoLocator)
cmdRunner := command_runner.NewRunner(cmdFactory, requirementsFactory, deps.Ui)
pluginsConfig := plugin_config.NewPluginConfig(func(err error) { deps.Ui.Failed(fmt.Sprintf("Error read/writing plugin config: %s, ", err.Error())) })
pluginList := pluginsConfig.Plugins()
var badFlags string
metaDatas := cmdFactory.CommandMetadatas()
//return only metadata for current command
metaDatas = mergePluginMetaData(metaDatas, pluginList)
if len(os.Args) > 1 {
flags := cmdFactory.GetCommandFlags(os.Args[1])
totalArgs, _ := cmdFactory.GetCommandTotalArgs(os.Args[1])
if args2skip := totalArgs + 2; len(os.Args) >= args2skip {
badFlags = matchArgAndFlags(flags, os.Args[args2skip:])
}
if badFlags != "" {
badFlags = badFlags + "\n\n"
}
}
injectHelpTemplate(badFlags)
theApp := app.NewApp(cmdRunner, metaDatas...)
rpcService.SetTheApp(theApp)
if cmdFactory.CheckIfCoreCmdExists(os.Args[1]) {
callCoreCommand(os.Args[0:], theApp)
} else {
// run each plugin and find the method/
// run method if exist
ran := rpc.RunMethodIfExists(rpcService, os.Args[1:], pluginList)
if !ran {
deps.Ui.Say("'" + os.Args[1] + "' is not a registered command. See 'cf help'")
os.Exit(1)
}
}
}