mirror of
https://code.dumpstack.io/tools/wi.git
synced 2024-11-04 23:43:22 +00:00
193 lines
3.5 KiB
Go
193 lines
3.5 KiB
Go
/**
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* @file main.go
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* @author Mikhail Klementyev jollheef<AT>riseup.net
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* @license GNU GPLv3
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* @date July, 2016
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* @brief Tiny non-interactive cli browser
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*/
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package main
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import (
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"bytes"
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"database/sql"
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"strings"
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"github.com/jollheef/wi/storage"
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"github.com/jaytaylor/html2text"
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"golang.org/x/net/html"
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"golang.org/x/net/html/charset"
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kingpin "gopkg.in/alecthomas/kingpin.v2"
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)
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var (
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get = kingpin.Command("get", "Get url")
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getUrl = get.Arg("url", "Url").Required().String()
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link = kingpin.Command("link", "Get link")
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linkNo = link.Arg("no", "Number").Required().Int64()
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historyList = kingpin.Command("history", "List history")
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historyListItems = historyList.Arg("items", "Amount of items").Int64()
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historyListAll = historyList.Flag("all", "Show all items").Bool()
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)
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func parseLink(db *sql.DB, oldPage, value string, req *http.Request) (htmlPage string, err error) {
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url, err := req.URL.Parse(value)
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if err != nil {
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return
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}
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linkNo, err := storage.GetLinkID(db, url.String())
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if err != nil {
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linkNo, err = storage.AddLink(db, url.String())
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if err != nil {
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return
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}
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}
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for _, s := range []string{value, html.EscapeString(value)} {
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htmlPage = strings.Replace(oldPage, "\""+s+"\"",
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"\""+fmt.Sprintf("%d", linkNo)+"\"", -1)
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}
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return
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}
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func parseLinks(db *sql.DB, body []byte, req *http.Request) (htmlPage string, err error) {
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htmlPage = string(body)
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z := html.NewTokenizer(bytes.NewReader(body))
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for {
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tt := z.Next()
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if tt == html.ErrorToken {
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break
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}
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for {
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key, value, moreAttr := z.TagAttr()
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if string(key) == "href" {
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htmlPage, err = parseLink(db, htmlPage, string(value), req)
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if err != nil {
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return
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}
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}
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if !moreAttr {
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break
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}
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}
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}
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return
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}
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func cmd_url(db *sql.DB, url string) {
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client := &http.Client{}
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// TODO Full url encoding
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req, err := http.NewRequest("GET", strings.Replace(url, " ", "%20", -1), nil)
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if err != nil {
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log.Fatalln(err)
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}
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req.Header.Set("User-Agent", "Wi 0.0")
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resp, err := client.Do(req)
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if err != nil {
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log.Fatalln(err)
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}
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storage.AddHistoryURL(db, url)
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defer resp.Body.Close()
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utf8, err := charset.NewReader(resp.Body, resp.Header.Get("Content-Type"))
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if err != nil {
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fmt.Println("Encoding error:", err)
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return
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}
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body, err := ioutil.ReadAll(utf8)
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if err != nil {
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fmt.Println("IO error:", err)
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return
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}
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htmlPage, err := parseLinks(db, body, req)
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if err != nil {
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panic(err)
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}
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text, err := html2text.FromString(htmlPage)
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if err != nil {
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panic(err)
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}
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text += ""
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fmt.Println(text)
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}
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func cmd_link(db *sql.DB, linkID int64) {
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url, err := storage.GetLink(db, linkID)
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if err != nil {
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panic(err)
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}
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cmd_url(db, url)
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}
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func cmd_history(db *sql.DB, argAmount, defaultAmount int64, all bool) {
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history, err := storage.GetHistory(db)
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if err != nil {
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panic(err)
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}
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var amount int64
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if all {
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amount = int64(len(history))
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} else if argAmount == 0 {
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if int64(len(history)) < defaultAmount {
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amount = int64(len(history))
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} else {
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amount = defaultAmount
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}
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} else {
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if amount > int64(len(history)) {
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amount = int64(len(history))
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} else {
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amount = argAmount
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}
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}
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for _, h := range history[int64(len(history))-amount:] {
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fmt.Println(h.ID, h.URL)
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}
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}
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func main() {
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db, err := storage.OpenDB("/tmp/wi.db")
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if err != nil {
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panic(err)
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}
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defer db.Close()
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switch kingpin.Parse() {
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case "get":
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cmd_url(db, *getUrl)
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case "link":
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cmd_link(db, *linkNo)
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case "history":
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cmd_history(db, *historyListItems, 20, *historyListAll)
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}
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}
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