66 lines
946 B
Go
66 lines
946 B
Go
package main
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import (
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"encoding/csv"
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"log"
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"os"
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"strconv"
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)
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type keymap struct {
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changes chan stateFlip
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mapped map[int]int
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play chan int
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}
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func (k keymap) load(file string) {
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f, err := os.Open(file)
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if err != nil {
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panic(err)
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}
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r := csv.NewReader(f)
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mapping, err := r.ReadAll()
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if err != nil {
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panic(err)
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}
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for _, m := range mapping {
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key, err := strconv.Atoi(m[0])
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if err != nil {
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panic(err)
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}
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value, err := strconv.Atoi(m[1])
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if err != nil {
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panic(err)
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}
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k.mapped[key] = value
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}
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}
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func (k keymap) lookup(key stateFlip) int {
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value, has := k.mapped[key.i]
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if !has {
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log.Printf("key %d not found", key.i)
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return -1
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}
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return value
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}
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func (k keymap) watch() {
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for key := range k.changes {
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play := k.lookup(key)
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if play >= 0 {
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k.play <- play
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}
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}
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}
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func newKeymap(changes chan stateFlip, mapFile string) keymap {
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k := keymap{
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changes: changes,
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}
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k.load(mapFile)
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return k
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}
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