first init

Change-Id: I09e398d59628256e2b11c4ba064476e1be1d22f6

go.mod

@@ -0,0 +1,5 @@
+module github.com/zzfup/garn
+
+go 1.16
+
+require github.com/PuerkitoBio/goquery v1.6.1

go.sum

@@ -0,0 +1,10 @@
+github.com/PuerkitoBio/goquery v1.6.1 h1:FgjbQZKl5HTmcn4sKBgvx8vv63nhyhIpv7lJpFGCWpk=
+github.com/PuerkitoBio/goquery v1.6.1/go.mod h1:GsLWisAFVj4WgDibEWF4pvYnkVQBpKBKeU+7zCJoLcc=
+github.com/andybalholm/cascadia v1.1.0 h1:BuuO6sSfQNFRu1LppgbD25Hr2vLYW25JvxHs5zzsLTo=
+github.com/andybalholm/cascadia v1.1.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/net v0.0.0-20180218175443-cbe0f9307d01/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20200202094626-16171245cfb2 h1:CCH4IOTTfewWjGOlSp+zGcjutRKlBEZQ6wTn8ozI/nI=
+golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

main.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+
+	"github.com/PuerkitoBio/goquery"
+)
+
+func crawl(q string) {
+	timeout := time.Duration(5 * time.Second) //超时时间5s
+	client := &http.Client{
+		Timeout: timeout,
+	}
+	url := "https://pkg.go.dev/search?q=" + q
+	var Body io.Reader
+	request, err := http.NewRequest("GET", url, Body)
+	if err != nil {
+		fmt.Println("抓取" + q + "失败")
+		return
+	}
+	request.Header.Add("User-Agent", `Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36`)
+
+	res, err := client.Do(request)
+	if err != nil {
+		fmt.Println("抓取"+q+"失败", err)
+		return
+	}
+	defer res.Body.Close()
+
+	document, err := goquery.NewDocumentFromReader(res.Body)
+	if err != nil {
+		fmt.Println("抓取" + q + "失败")
+		return
+	}
+
+	allData := []map[string]string{}
+	document.Find(".SearchResults .LegacySearchSnippet").Each(func(i int, selection *goquery.Selection) {
+		pkgName := selection.Find("h2").Text()
+		desc := selection.Find("p").Text()
+		allData = append(allData, map[string]string{
+			"pkg":  strings.TrimSpace(pkgName),
+			"desc": desc,
+		})
+	})
+
+	first := allData[0]
+	for _, v := range allData {
+		if strings.Contains(v["pkg"], q) {
+			first = v
+			break
+		}
+	}
+
+	fmt.Println("找到包：", first["pkg"])
+	fmt.Println(first["desc"])
+
+	path, _ := os.Getwd()
+	fmt.Println("工作目录：", path)
+
+	cmd := exec.Command("go", "get", "-u", "-v", first["pkg"])
+	fmt.Println("开始执行：", cmd)
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		fmt.Println(string(out), err)
+		return
+	}
+	fmt.Println(string(out))
+}
+
+func main() {
+	args := os.Args
+
+	if args[1] != "add" {
+		fmt.Println("gopm add xxx")
+	}
+	q := args[2]
+
+	fmt.Println("开始抓取：", q)
+	crawl(q)
+}

readme.md

@@ -0,0 +1,10 @@
+# garn
+
+仿照yarn的命令格式。
+
+```
+garn add xxx
+```
+
+# 优点
+用户不用去记录整个包，只需要记得是哪个包的名字，即可添加依赖。