去除公共配置变量，封装执行逻辑

src/cmd/lib.go

@@ -10,21 +10,14 @@ import (
 	"strings"
 )
 
-var (
-	url            string
-	folderTitleUrl string
-	max            int
-	output         string
-	chapter        int
-	host           = "https://img4.qy0.ru"
-)
+func Execute() {
+	rootCmd := NewRootCmd()
+	CommandInit(rootCmd)
 
-func init() {
-	rootCmd.PersistentFlags().StringVarP(&url, "url", "u", "", "除域名外的链接")
-	rootCmd.PersistentFlags().IntVarP(&max, "max", "m", 1, "图片最大值")
-	rootCmd.PersistentFlags().StringVarP(&output, "output", "o", "anime", "设置漫画抓取结果的保存位置，默认为当前用户的主目录下的 anime 文件夹")
-	rootCmd.PersistentFlags().StringVarP(&folderTitleUrl, "folderTitleUrl", "t", "", "文件夹标题抓取链接")
-	rootCmd.PersistentFlags().IntVarP(&chapter, "chapter", "c", 1, "指定章节，用于文件夹标题抓取")
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
 }
 
 func IfPathNotExistDoMkdir(path string) error {
@@ -39,13 +32,6 @@ func IfPathNotExistDoMkdir(path string) error {
 	return nil
 }
 
-func Execute() {
-	if err := rootCmd.Execute(); err != nil {
-		fmt.Println(err)
-		os.Exit(1)
-	}
-}
-
 // FindChapterTitle 解析文件夹标题
 func FindChapterTitle(url string) string {
 	resp, err := http.Get(url)
@@ -68,7 +54,7 @@ func FindChapterTitle(url string) string {
 		return ""
 	}
 
-	re := regexp.MustCompile(`\\u7b2c` + strconv.Itoa(chapter) + `\\u8bdd (.+?)"`)
+	re := regexp.MustCompile(`\\u7b2c` + strconv.Itoa(config.chapter) + `\\u8bdd (.+?)"`)
 	matches := re.FindAllStringSubmatch(string(body), -1)
 
 	if len(matches) == 0 {

src/cmd/root.go

@@ -5,7 +5,19 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var rootCmd = &cobra.Command{
+type Config struct {
+	url            string
+	folderTitleUrl string
+	max            int
+	output         string
+	chapter        int
+	host           string
+}
+
+var config = Config{host: "https://img4.qy0.ru"}
+
+func NewRootCmd() *cobra.Command {
+	return &cobra.Command{
 		Use:   "anime",
 		Short: "Anime crawler written by go",
 		Run: func(cmd *cobra.Command, args []string) {
@@ -13,3 +25,12 @@ var rootCmd = &cobra.Command{
 			fmt.Println("抓取完成")
 		},
 	}
+}
+
+func CommandInit(rootCmd *cobra.Command) {
+	rootCmd.PersistentFlags().StringVarP(&config.url, "url", "u", "", "除域名外的链接")
+	rootCmd.PersistentFlags().IntVarP(&config.max, "max", "m", 1, "图片最大值")
+	rootCmd.PersistentFlags().StringVarP(&config.output, "output", "o", "anime", "设置漫画抓取结果的保存位置，默认为当前用户的主目录下的 anime 文件夹")
+	rootCmd.PersistentFlags().StringVarP(&config.folderTitleUrl, "folderTitleUrl", "t", "", "文件夹标题抓取链接")
+	rootCmd.PersistentFlags().IntVarP(&config.chapter, "chapter", "c", 1, "指定章节，用于文件夹标题抓取")
+}

src/cmd/start.go

@@ -22,16 +22,16 @@ func NewCrawler() *Crawler {
 }
 
 func (c *Crawler) Start() {
-	c.path = output
-	if folderTitleUrl != "" {
-		chapterTitle := FindChapterTitle(folderTitleUrl)
+	c.path = config.output
+	if config.folderTitleUrl != "" {
+		chapterTitle := FindChapterTitle(config.folderTitleUrl)
 		title := strings.Join([]string{
 			"第",
-			strconv.Itoa(chapter),
+			strconv.Itoa(config.chapter),
 			"话-",
 			chapterTitle,
 		}, "")
-		c.path = filepath.Join(output, title) // 组装章节路径
+		c.path = filepath.Join(config.output, title) // 组装章节路径
 	}
 
 	err := IfPathNotExistDoMkdir(c.path)
@@ -40,8 +40,8 @@ func (c *Crawler) Start() {
 		return
 	}
 
-	c.wg.Add(max)
-	for i := 1; i <= max; i++ {
+	c.wg.Add(config.max)
+	for i := 1; i <= config.max; i++ {
 		go c.do(i)
 	}
 
@@ -52,12 +52,12 @@ func (c *Crawler) do(num int) {
 	defer c.wg.Done()
 
 	// 兼容未携带斜杆的地址
-	if url[0] != '/' {
-		url = "/" + url
+	if config.url[0] != '/' {
+		config.url = "/" + config.url
 	}
 
 	numString := strconv.Itoa(num)
-	urlSlice := strings.Split(url, "_")          // 取URL组装
+	urlSlice := strings.Split(config.url, "_")   // 取URL组装
 	fileSlice := strings.Split(urlSlice[1], ".") // 取后缀名
 	fileName := strings.Join([]string{           // 组装文件名
 		numString,
@@ -70,7 +70,7 @@ func (c *Crawler) do(num int) {
 	}
 
 	imgUrl := strings.Join([]string{ // 组装图片URL
-		host,
+		config.host,
 		urlSlice[0],
 		"_",
 		urlNum,