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format.go
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format.go
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package main
import (
"encoding/json"
"fmt"
"github.com/gieseladev/glyrics/v3"
"github.com/urfave/cli"
"io"
"log"
"os"
"strings"
"time"
"unicode/utf8"
)
var errlog = log.New(os.Stderr, "", 0)
func writeHeadline(w io.Writer, lyrics *glyrics.LyricsInfo) int {
var total int
n, _ := fmt.Fprint(w, lyrics.Title)
total += n
if lyrics.Artist != "" {
n, _ := fmt.Fprintf(w, " by %s", lyrics.Artist)
total += n
}
if lyrics.ReleaseDate != (time.Time{}) {
n, _ := fmt.Fprintf(w, " (%d)", lyrics.ReleaseDate.Year())
total += n
}
return total
}
func printLyrics(lyrics *glyrics.LyricsInfo) {
var headlineBuilder strings.Builder
writeHeadline(&headlineBuilder, lyrics)
headline := headlineBuilder.String()
underline := strings.Repeat("=", utf8.RuneCountInString(headline))
fmt.Printf("%s\n%s\n\n%s\n\nfrom %s",
headline, underline, lyrics.Lyrics, lyrics.Origin.Website,
)
}
func printLyricsFormat(c *cli.Context, lyrics *glyrics.LyricsInfo) {
format := c.GlobalString("format")
switch format {
case "json":
_ = json.NewEncoder(os.Stdout).Encode(lyrics)
default:
printLyrics(lyrics)
}
}
func printMultipleLyricsOverview(infos []glyrics.LyricsInfo) {
w := os.Stdout
var avgWritten float64
for i, info := range infos {
_, _ = fmt.Fprintf(w, "%2d. ", i+1)
written := writeHeadline(w, &info)
if writtenF64 := float64(written); writtenF64 > avgWritten || avgWritten-writtenF64 > 50 {
avgWritten = writtenF64
}
padding := int(avgWritten) - written
if padding > 0 {
_, _ = w.WriteString(strings.Repeat(" ", padding))
}
_, _ = fmt.Fprintf(w, " (%s)\n", info.URL)
}
}
func printMultipleLyricsFormat(c *cli.Context, infos []glyrics.LyricsInfo) {
format := c.GlobalString("format")
switch format {
case "json":
_ = json.NewEncoder(os.Stdout).Encode(infos)
default:
printMultipleLyricsOverview(infos)
}
}