func main() {
defer glog.Flush()
diffConfig := &dm.DifferencerConfig{}
diffConfig.CreateFlags(flag.CommandLine)
flag.Parse() // Scan the arguments list
goioutil.InitGOMAXPROCS()
cfg := spew.NewDefaultConfig()
cfg.SortKeys = true
cfg.Dump("Spew config:\n", cfg)
cmd := filepath.Base(os.Args[0])
glog.V(1).Infoln("cmd =", cmd)
ctrl := GoRtnCntrl{
stopCh: make(chan bool),
wg: &sync.WaitGroup{},
}
var stats dm.LeadingWhitespaceStatistics
fileCh := make(chan *dm.File, runtime.NumCPU())
ctrl.wg.Add(1)
go collectStats(fileCh, &stats, ctrl)
textFileCh := make(chan string, runtime.NumCPU())
ctrl.wg.Add(1)
go readAllFiles(runtime.NumCPU(), textFileCh, fileCh, ctrl)
ftiCtrl := ctrl
ftiCtrl.wg = &sync.WaitGroup{}
ftiMgr := MakeFileTypeInfoManager(ftiCtrl)
ctrl.wg.Add(1)
expandArgsToTextFiles(flag.Args(), textFileCh, runtime.NumCPU(), ftiMgr, ctrl)
// Wait for the main pipeline to complete.
ctrl.wg.Wait()
close(ctrl.stopCh)
// Wait for the file type info manager to shutdown.
ftiCtrl.wg.Wait()
fmt.Println("Non-text extensions discovered:")
cfg.Dump(ftiMgr.nonTextTypes)
fmt.Println("Text extensions discovered:")
cfg.Dump(ftiMgr.textTypes)
fmt.Println()
fmt.Println()
stats.ComputeFractions()
fmt.Println("Whitespace info:")
cfg.Dump(stats)
}
// Must be single threaded (w.r.t. stats access).
func collectStats(fileCh chan *dm.File, stats *dm.LeadingWhitespaceStatistics, ctrl GoRtnCntrl) {
defer ctrl.wg.Done()
for {
select {
case <-ctrl.stopCh:
return
case file, ok := <-fileCh:
if !ok {
return
}
stats.AddFile(file)
}
}
}