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parse.go
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parse.go
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package music163
import (
"fmt"
"net/url"
"strings"
)
// Parse 解析分享链接
func Parse(shareUrl string) (*musicInfo, error) {
link := extractedLink(shareUrl)
if link == "" {
return nil, ErrorNoFoundShareLink
}
_, err := url.Parse(link)
if err != nil {
return nil, err
}
if strings.Index(link, "http://163cn.tv/") == 0 {
// 获取跳转链接
newLink := extractedAdaptUrl(link)
if newLink == "" {
return nil, ErrorNoFoundShareLink
}
link = newLink
}
link = switchUrl(link)
data := &musicInfo{
Url: link,
Logo: favicon,
}
u, err := url.Parse(link)
if err != nil {
return nil, err
}
err = getMusicTitle(data)
if err != nil {
return data, err
}
musicId := u.Query().Get("id")
if musicId == "" {
return data, nil
}
err = getSongDetail(data, musicId)
if err != nil {
return data, err
}
err = getSongUrl(data, musicId)
if err != nil {
return data, err
}
return data, nil
}
// 转换url
func switchUrl(link string) string {
if strings.Index(link, "https://music.163.com/song") == 0 {
return strings.ReplaceAll(link, "https://music.163.com/song", "https://y.music.163.com/m/song")
}
return link
}
// 提取adaptUrl
func extractedAdaptUrl(link string) string {
body, err := doGet(link)
if err != nil {
return ""
}
return extractedLink(body)
}
// 提取分享链接
func extractedLink(shareUrl string) string {
link := musicShareLinkReg.FindString(shareUrl)
if link == "" {
return ""
}
return link
}
// 获取标题
func getMusicTitle(data *musicInfo) error {
val, err := doGet(data.Url)
if err != nil {
return err
}
titles := musicTitleRegexp.FindStringSubmatch(val)
if len(titles) > 1 {
data.Title = titles[1]
}
return nil
}
// 获取歌曲详情
func getSongDetail(data *musicInfo, musicId string) error {
d := fmt.Sprintf(song_detail_format, musicId, musicId)
uv := url.Values{}
uv.Set("params", aesEncrypt(aesEncrypt(d, key1), key2))
uv.Set("encSecKey", enc)
r, err := doPost(api_get_song_detail, data.Url, strings.NewReader(uv.Encode()))
if err != nil {
return err
}
if r == nil {
return nil
}
song := r.Get("songs.0")
data.Name = song.Get("name").String()
data.Album = song.Get("al.name").String()
data.Duration = song.Get("dt").Float()
data.Cover = song.Get("al.picUrl").String() + "?param=200y200"
artists := make([]string, 0)
for _, result := range song.Get("ar").Array() {
artists = append(artists, result.Get("name").String())
}
data.Artist = strings.Join(artists, "/")
return nil
}
func getSongUrl(data *musicInfo, musicId string) error {
d := fmt.Sprintf(song_url_format, musicId)
uv := url.Values{}
uv.Set("params", aesEncrypt(aesEncrypt(d, key1), key2))
uv.Set("encSecKey", enc)
r, err := doPost(api_get_song_url, referer_url, strings.NewReader(uv.Encode()))
if err != nil {
return err
}
if r == nil {
return nil
}
dt := r.Get("data.0")
data.Music = dt.Get("url").String()
return nil
}