gocc/watch.go

package main

import "fmt"

func Watch(ch <-chan *CompileReport, doneCh chan<- struct{}) {
	defer close(doneCh)

	states := map[*CompileConfig]CompileState{}
	for _, cfg := range CompileConfigs {
		states[cfg] = StateWaiting
	}

	cleared := false

	for report := range ch {
		states[report.Config] = report.State
		if !*Silent {
			PrintStates(states, cleared)
		}
		cleared = true
	}

	doneCh <- struct{}{}
}

func PrintStates(states map[*CompileConfig]CompileState, clear bool) {
	if clear {
		for i := 0; i < len(CompileConfigs); i++ {
			goUp()
			clearEOL()
		}
	}

	for _, cfg := range CompileConfigs {
		state, ok := states[cfg]
		if !ok {
			fmt.Println()
			continue
		}

		fmt.Printf(fmt.Sprintf("%%-%ds %%s\n", MaxConfigStringLength), cfg.String(), state)
	}
}