func ParseHtml(io io.Reader, ps []post.Post) (psout []post.Post, err error) {
// Create a qoquery document to parse from
doc, err := goquery.NewDocumentFromReader(io)
checkErr(err, "Failed to parse HTML")
if err == nil {
fmt.Println("---- Starting to parse ------------------------")
// Find reddit posts = elements with class "thing"
thing := doc.Find(".thing")
for iThing := range thing.Nodes {
post := post.NewPost()
// use `single` as a selection of 1 node
singlething := thing.Eq(iThing)
// get the reddit post identifier
reddit_post_id, exists := singlething.Attr("data-fullname")
if exists == false {
singlehtml, _ := singlething.Html()
post.Err = fmt.Errorf("data-fullname not found in %s", singlehtml)
} else {
// find an element with class title and a child with class may-blank
// Remove CRLF and unnecessary whitespaces
post.Title = stringMinifier(singlething.Find(".title .may-blank").Text())
post.PostId = reddit_post_id
post.User = singlething.Find(".author").Text()
post.Url, _ = singlething.Find(".comments.may-blank").Attr("href")
post.SetScore(singlething.Find(".score.likes").Text())
reddit_postdate, exists := singlething.Find("time").Attr("datetime")
if exists == false {
singlehtml, _ := singlething.Html()
post.Err = fmt.Errorf("datetime not found in %s", singlehtml)
} else {
//post := post.NewPost()
post.SetPostDate(reddit_postdate)
// Print out the crawled info
post.String()
fmt.Println("-----------------------------------------------")
}
}
ps = append(ps, post)
}
}
return ps, err
}
// Parse for posts in html from reddit, input html is an io.Reader and returns recognized posts in a psout slice of posts.
// Errors which affect only a single post are stored in their post.Err
func ParseHtmlReddit(io io.Reader, ps []post.Post) (psout []post.Post, err error) {
// Create a qoquery document to parse from an io.Reader
doc, err := goquery.NewDocumentFromReader(io)
if err != nil {
return ps, errors.New("Failed to parse HTML: " + err.Error())
}
// Find reddit posts = elements with class "thing"
thing := doc.Find(".thing")
for iThing := range thing.Nodes {
// Create a new post struct - if the crawling fails the post will have an Err attached
// but will be added to the outgoing (psout) slice nevertheless
post := post.NewPost()
post.Site = "reddit"
// use `singlething` as a selection of one single post
singlething := thing.Eq(iThing)
// get the reddit post identifier
reddit_post_id, exists := singlething.Attr("data-fullname")
if exists == false {
singlehtml, _ := singlething.Html()
post.Err = fmt.Errorf("data-fullname not found in %s", singlehtml)
} else {
post.WebPostId = reddit_post_id
// find an element with class title and a child with class may-blank
// and remove CRLF and unnecessary whitespaces
post.Title = stringMinifier(singlething.Find(".title .may-blank").Text())
// Get the post user
post.User = singlething.Find(".author").Text()
// Get the post url
post.Url, _ = singlething.Find(".comments.may-blank").Attr("href")
// Get the post likes score
post.SetScore(singlething.Find(".score.likes").Text())
// Get the post date
reddit_postdate, exists := singlething.Find("time").Attr("datetime")
if exists == false {
singlehtml, _ := singlething.Html()
post.Err = fmt.Errorf("datetime not found in %s", singlehtml)
} else {
post.SetPostDate(reddit_postdate)
}
}
ps = append(ps, post)
}
return ps, err
}
