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util.go
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util.go
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package control
import (
"errors"
"fmt"
"io"
"strconv"
"strings"
"github.com/insomnimus/libman/util"
"github.com/zmb3/spotify"
)
// aliases for compatibility
var (
hasPrefixFold = util.HasPrefixFold
splitCmd = util.SplitCmd
)
func readBool(format string, args ...interface{}) bool {
rl.SetCompleter(completeBool)
for {
reply, cancelled := readPrompt(false, format+" [y/n]: ", args...)
if cancelled {
return false
}
switch strings.ToLower(reply) {
case "y", "yes":
return true
case "n", "no":
return false
default:
fmt.Println("please enter yes or no")
}
}
}
func readPrompt(addToHistory bool, format string, args ...interface{}) (reply string, cancelled bool) {
var err error
reply, err = rl.Prompt(fmt.Sprintf(format, args...))
if errors.Is(err, io.EOF) {
rl.Close()
Terminator <- true
select {}
}
if err != nil {
return "", true
}
if addToHistory && reply != "" {
rl.AppendHistory(reply)
}
return strings.TrimSpace(reply), false
}
func readString(format string, args ...interface{}) string {
reply, _ := readPrompt(false, format, args...)
return reply
}
func trackQuery(s string) string {
if strings.Contains(s, "::") {
split := strings.SplitN(s, "::", 2)
track := strings.TrimSpace(split[0])
if len(split) != 2 {
return "track:" + track
}
artist := strings.TrimSpace(split[1])
return fmt.Sprintf("track:%s artist:%s", track, artist)
}
if strings.Contains(s, " by ") {
split := strings.SplitN(s, " by ", 2)
if len(split) != 2 {
return s
}
track := strings.TrimSpace(split[0])
artist := strings.TrimSpace(split[1])
return fmt.Sprintf("track:%s artist:%s", track, artist)
}
return s
}
func albumQuery(s string) string {
if strings.Contains(s, "::") {
split := strings.SplitN(s, "::", 2)
alb := strings.TrimSpace(split[0])
if len(split) != 2 {
return "album:" + alb
}
artist := strings.TrimSpace(split[1])
return fmt.Sprintf("album:%s artist:%s", alb, artist)
}
if strings.Contains(s, " by ") {
split := strings.SplitN(s, " by ", 2)
if len(split) != 2 {
return s
}
alb := strings.TrimSpace(split[0])
artist := strings.TrimSpace(split[1])
return fmt.Sprintf("album:%s artist:%s", alb, artist)
}
return s
}
func readNumber(min, max int) int {
for {
reply := readString("[%d-%d, -1 or blank to cancel]: ", min, max)
if reply == "" || reply == "-1" {
return -1
}
n, err := strconv.Atoi(reply)
if err != nil {
fmt.Println("invalid input, please enter again")
continue
}
if n < min || n >= max {
fmt.Printf("please enter a number between %d and %d\n", min, max)
continue
}
return n
}
}
func joinArtists(arts []spotify.SimpleArtist) string {
switch len(arts) {
case 0:
return ""
case 1:
return arts[0].Name
case 2:
return fmt.Sprintf("%s and %s", arts[0].Name, arts[1].Name)
default:
names := make([]string, len(arts)-1)
for i, a := range arts[:len(arts)-1] {
names[i] = a.Name
}
return fmt.Sprintf("%s and %s", strings.Join(names, ", "), arts[len(arts)-1].Name)
}
}
func expandAlias(s string) string {
als := userAliases.Inner()
if als != nil {
lower := strings.ToLower(s)
for _, a := range als {
left := strings.ToLower(a.Left)
if strings.HasPrefix(lower, left) {
// must be separated by a space
if len(left) == len(s) {
return a.Right
}
if s[len(left)] == ' ' {
return fmt.Sprintf("%s %s", a.Right, s[len(left):])
}
}
}
}
return s
}
func parseNumber(s string, max int, usage string) (int, bool) {
if s == "" {
fmt.Println(usage)
return -1, false
}
n, err := strconv.Atoi(s)
if err != nil {
fmt.Println(usage)
return -1, false
}
if n < 0 || n >= max {
fmt.Printf("Please enter a value between 0 and %d.\n", max)
return -1, false
}
return n, true
}