func TestCrawUrl(t *testing.T) {
url := "http://www.csszengarden.com/"
css1 := "/214/214.css?v=8may2013"
outDir := "outdir"
finder := funcs.GetValidName("css")
seg := strings.Split(css1, "/")
n := len(seg)
name := finder(seg[n-1])
log.Println("name =", name)
finalOut, err := funcs.CrawlInnerFile(url, css1, outDir, name)
if err != nil || finalOut != outDir+"/214/214.css" {
t.Fatal("test CrawlFile failed, error:", err, "output at:", finalOut)
}
}
func main() {
var url = flag.String("u", "", "抓取url地址")
flag.StringVar(&outDir, "d", "outdir", "抓取结果存储目录")
flag.Parse()
if !flag.Parsed() || *url == "" {
flag.PrintDefaults()
os.Exit(-1)
}
doc, err := goquery.NewDocument(*url)
if err != nil {
log.Println("get url:", err)
os.Exit(-1)
}
sel := doc.Find("head link[rel=stylesheet]")
sel = sel.Add("script")
sel = sel.Add("img")
htmlFind := funcs.GetValidName("")
cssFind := funcs.GetValidName("css")
jsFind := funcs.GetValidName("js")
imgFind := funcs.GetValidName("img")
seg := strings.Split(*url, "/")
if len(seg) < 3 {
log.Println("url format invalid")
os.Exit(-1)
}
outDir2 := htmlFind(seg[len(seg)-1])
os.Remove(outDir)
os.Remove(outDir2)
if err = os.Mkdir(outDir2, 0744); err != nil {
if err = os.Mkdir(outDir, 0744); err != nil {
log.Println("mkdir output directory:", outDir, "failed, error:", err)
os.Exit(-1)
}
} else {
outDir = outDir2
}
if err = funcs.CrawlHtml(*url, outDir+"/index.html"); err != nil {
log.Println("CrawHtml failed:", *url, ", error:", err)
os.Exit(-1)
}
sel.Each(func(indx int, selection *goquery.Selection) {
fileType := ""
innerfile := ""
var finder func(string) string
switch selection.Nodes[0].Data {
case "link":
innerfile, _ = selection.Attr("href")
fileType = "css"
finder = cssFind
case "script":
innerfile, _ = selection.Attr("src")
fileType = strings.ToLower(path.Ext(innerfile))
if fileType == "js" {
finder = jsFind
} else {
innerfile = ""
fileType = "invalid"
}
case "img":
innerfile, _ = selection.Attr("src")
fileType = "img"
finder = imgFind
default:
log.Println("not supported tag")
}
seg = strings.Split(innerfile, "/")
innerFileName := innerfile
if innerfile != "" {
if len(seg) > 0 {
lastpart := seg[len(seg)-1]
innerFileName = finder(lastpart)
if innerFileName == "" {
log.Println("find valid", fileType, ":", innerfile, "failed")
innerFileName = lastpart
} else {
log.Println("find", fileType, ":", innerFileName)
}
}
if finalOut, err := funcs.CrawlInnerFile(*url, innerfile, outDir, innerFileName); err != nil {
log.Println("get url to local failed:", err)
os.Exit(-1)
} else {
if fileType == "css" {
backimgs := funcs.CssFileBackgroundImages(finalOut)
for _, img := range backimgs {
seg := strings.Split(img, "/")
lastpart := seg[len(seg)-1]
imgName := imgFind(lastpart)
if imgName == "" {
imgName = lastpart
}
if img[0] != '/' {
img = path.Dir(innerfile) + "/" + img
}
if imgOut, err := funcs.CrawlInnerFile(*url, img, outDir, imgName); err != nil {
log.Println("download", img, "failed, error:", err)
} else {
log.Println("download", img, "at: [", imgOut, "] success!")
}
}
}
}
}
})
}