366 lines
7.5 KiB
Go
366 lines
7.5 KiB
Go
package main
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import (
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e "codeberg.org/pebbe/errors"
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"github.com/jbowtie/gokogiri"
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"encoding/xml"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"os"
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"path/filepath"
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"strings"
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"time"
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)
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type Rss struct {
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XMLName xml.Name `xml:"rss"`
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Items []ItemT `xml:"channel>item"`
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}
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type ItemT struct {
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PubDate string `xml:"pubDate"`
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UnixTime int64 `xml:"unixTime"`
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Guid string `xml:"guid"`
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Link string `xml:"link"`
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Data []byte `xml:",innerxml"`
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}
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var (
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p = e.PanicErr
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w = e.WarnErr
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agent = "AhrefsBot/7.0"
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)
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func exists(filename string) bool {
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_, err := os.Stat(filename)
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return err == nil
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}
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func fileDate(filename string) string {
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b, err := os.ReadFile(filename)
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if err != nil {
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return ""
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}
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s := string(b)
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i1 := strings.Index(s, "<unixTime>") + 10
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i2 := strings.Index(s, "</unixTime>")
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if i2 < i1 {
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return ""
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}
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return s[i1:i2]
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}
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func main() {
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defer func() {
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if e.Panicked {
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_ = recover()
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os.Exit(1)
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}
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}()
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myLock := "/net/corpora/nlnieuws/Parool/lock"
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mkLock(myLock)
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defer func() {
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_ = os.Remove(myLock)
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}()
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req, err := http.NewRequest("GET", "https://www.parool.nl/amsterdam/rss.xml", nil)
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p(err)
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req.Header.Set("User-Agent", agent)
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client := &http.Client{}
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resp, err := client.Do(req)
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p(err)
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body, err := io.ReadAll(resp.Body)
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p(err)
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p(resp.Body.Close())
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var rss Rss
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p(xml.Unmarshal(body, &rss))
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if len(rss.Items) == 0 {
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p(fmt.Errorf("len(rss.Items) == 0"))
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}
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for _, item := range rss.Items {
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t, err := time.Parse(time.RFC1123Z, item.PubDate)
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if err != nil {
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t, err = time.Parse(time.RFC1123, item.PubDate)
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}
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p(err)
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year, week := t.ISOWeek()
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dirname := fmt.Sprintf("/net/corpora/nlnieuws/Parool/%d/%02d", year, week)
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if exists(dirname + "/lock") {
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continue
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}
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basename := item.Guid
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filename := dirname + "/" + url.PathEscape(basename)
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ts := fmt.Sprintf("%d", t.Unix())
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needUpdate := fileDate(filename+".xml") != ts
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p(os.MkdirAll(dirname, 0777))
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func() {
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var ok bool
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defer func() {
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if e.Panicked {
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fmt.Fprintln(os.Stderr, "----", filename)
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fmt.Fprintln(os.Stderr, "----", item.Link)
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}
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if !ok {
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_ = os.Remove(filename + ".xml")
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}
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}()
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fp, err := os.Create(filename + ".xml")
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p(err)
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p(fp.WriteString("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<item>\n"))
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p(fmt.Fprintf(fp, "<unixTime>%d</unixTime>", t.Unix()))
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p(fp.Write(item.Data))
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p(fp.WriteString("</item>\n"))
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p(fp.Close())
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p(os.Chtimes(filename+".xml", t, t))
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ok = doArticle(filename, item.Link, t, needUpdate)
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}()
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}
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}
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func doArticle(filename string, url string, timestamp time.Time, needUpdate bool) (ok bool) {
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if exists(filename + ".skip") {
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return true
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}
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if needUpdate {
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_ = os.Remove(filename + ".err")
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_ = os.Remove(filename + ".html")
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_ = os.Remove(filename + ".txt")
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} else {
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if exists(filename + ".txt") {
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return true
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}
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}
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time.Sleep(2 * time.Second)
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req, err := http.NewRequest("GET", url, nil)
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p(err)
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req.Header.Set("User-Agent", agent)
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client := &http.Client{}
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resp, err := client.Do(req)
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p(err)
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body, err := io.ReadAll(resp.Body)
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p(err)
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p(resp.Body.Close())
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doc, err := gokogiri.ParseHtml(body)
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p(err)
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root := doc.Root()
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articles, err := root.Search(`//article[@id="article-content"]`)
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p(err)
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if len(articles) == 0 {
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_ = w(fmt.Errorf("empty: %s", url))
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fp, err := os.Create(filename + ".err")
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p(err)
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p(fmt.Fprintf(fp, "empty: %s\n", url))
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p(fp.Close())
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p(os.Chtimes(filename+".err", timestamp, timestamp))
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fp, err = os.Create(filename + ".html")
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p(err)
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p(fp.Write(body))
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p(fp.Close())
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p(os.Chtimes(filename+".html", timestamp, timestamp))
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return false
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}
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article := articles[0]
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live, err := article.Search(`//*[@data-test-id="live-blog-label"]`)
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p(err)
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if len(live) > 0 {
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fp, err := os.Create(filename + ".skip")
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p(fp.WriteString("liveblog\n"))
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p(err)
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p(os.Chtimes(filename+".skip", timestamp, timestamp))
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return true
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}
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headers, err := article.Search(`//header`)
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p(err)
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if len(headers) == 0 {
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_ = w(fmt.Errorf("no header: %s", url))
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fp, err := os.Create(filename + ".err")
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p(err)
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p(fmt.Fprintf(fp, "no elements: %s\n", url))
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p(fp.Close())
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p(os.Chtimes(filename+".err", timestamp, timestamp))
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fp, err = os.Create(filename + ".html")
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p(err)
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p(fp.Write(body))
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p(fp.Close())
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p(os.Chtimes(filename+".html", timestamp, timestamp))
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return false
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}
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header := headers[0]
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tags := make([]string, 0)
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ell, err := header.Search(`//*[@data-test-id="article-label"]`)
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p(err)
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if len(ell) == 0 {
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_ = w(fmt.Errorf("no labels: %s", url))
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}
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for _, el := range ell {
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s := strings.TrimSpace(el.Content())
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if s != "" {
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tags = append(tags, s)
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}
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}
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pars := make([]string, 0)
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ell, err = header.Search(`//*[@data-test-id="article-title"]`)
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p(err)
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if len(ell) != 1 {
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_ = w(fmt.Errorf("found %d titles: %s", len(ell), url))
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}
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for _, el := range ell {
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s := strings.TrimSpace(el.Content())
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if s != "" {
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pars = append(pars, s)
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}
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}
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found := false
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ell, err = header.Search(`//*[@data-test-id="header-intro"]`)
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p(err)
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for _, el := range ell {
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s := strings.TrimSpace(el.Content())
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if s != "" {
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pars = append(pars, s)
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found = true
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}
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}
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if !found {
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_ = w(fmt.Errorf("no intro: %s", url))
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}
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specials, err := article.Search(`//section//aside | //section//figure | //section//b`)
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p(err)
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for _, special := range specials {
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special.Remove()
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}
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ell, err = article.Search(`//section//*[@data-article-element-index]`)
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p(err)
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if len(ell) == 0 {
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_ = w(fmt.Errorf("no elements: %s", url))
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fp, err := os.Create(filename + ".err")
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p(err)
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p(fmt.Fprintf(fp, "no elements: %s\n", url))
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p(fp.Close())
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p(os.Chtimes(filename+".err", timestamp, timestamp))
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fp, err = os.Create(filename + ".html")
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p(err)
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p(fp.Write(body))
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p(fp.Close())
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p(os.Chtimes(filename+".html", timestamp, timestamp))
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return false
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}
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found = false
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for _, el := range ell {
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s := strings.TrimSpace(el.Content())
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if s != "" {
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pars = append(pars, s)
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found = true
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}
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}
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if !found {
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_ = w(fmt.Errorf("no text, skipping: %s", url))
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fp, err := os.Create(filename + ".skip")
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p(fp.WriteString(url + "\n"))
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p(err)
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p(os.Chtimes(filename+".skip", timestamp, timestamp))
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fp, err = os.Create(filename + ".html")
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p(err)
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p(fp.Write(body))
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p(fp.Close())
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p(os.Chtimes(filename+".html", timestamp, timestamp))
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return true
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}
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fp, err := os.Create(filename + ".txt")
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p(err)
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if len(tags) == 0 {
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p(fmt.Fprintln(fp, "##META text tag ="))
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} else {
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for _, tag := range tags {
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p(fmt.Fprintf(fp, "##META text tag = %s\n", fixSpace(tag)))
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}
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}
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for _, par := range pars {
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p(fp.WriteString(addEnd(fixSpace(par))))
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}
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p(fp.Close())
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p(os.Chtimes(filename+".txt", timestamp, timestamp))
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return true
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}
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func addEnd(s string) string {
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s = strings.TrimSpace(s)
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n := len(s)
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if n == 0 {
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return ""
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}
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if n > 0 {
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if strings.ContainsAny(s[n-1:], ".!?") {
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return s + "\n"
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}
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}
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if n > 1 {
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s2 := s[n-2:]
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if s2 == `."` || s2 == `!"` || s2 == `?"` || s2 == `.'` || s2 == `!'` || s2 == `?'` {
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return s + "\n"
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}
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}
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if strings.HasSuffix(s, `.”`) || strings.HasSuffix(s, `!”`) || strings.HasSuffix(s, `?”`) {
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return s + "\n"
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}
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return s + ".\n"
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}
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func fixSpace(s string) string {
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return strings.Join(strings.Fields(s), " ")
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}
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func mkLock(filename string) {
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pid := os.Getpid()
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link := fmt.Sprintf("%s.%d", filepath.Base(filename), pid)
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p(os.Symlink(link, filename))
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name, err := os.Readlink(filename)
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p(err)
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if name != link {
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p(fmt.Errorf("wrong lock name %q, should be %q", name, link))
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}
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}
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