A library to extract useful data from HTML documents, suitable for web scraping.
Note: All the API is currently unstable and will change as I use this library more in real world projects. If you have any suggestions or feedback, please open an issue or send me an email.
extern crate select;
use select::document::Document;
use select::predicate::{Predicate, Attr, Class, Name};
pub fn main() {
// stackoverflow.html was fetched from
// http://stackoverflow.com/questions/tagged/rust?sort=votes&pageSize=50 on
// Aug 10, 2015.
let document = Document::from(include_str!("stackoverflow.html"));
println!("# Menu");
for node in document.find(Attr("id", "hmenus").descendant(Name("a"))) {
println!("{} ({:?})", node.text(), node.attr("href").unwrap());
}
println!("");
println!("# Top 5 Questions");
for node in document.find(Class("question-summary")).take(5) {
let question = node.find(Class("question-hyperlink")).next().unwrap();
let votes = node.find(Class("vote-count-post")).next().unwrap().text();
let answers = node.find(Class("status").descendant(Name("strong")))
.next()
.unwrap()
.text();
let tags = node.find(Class("post-tag")).map(|tag| tag.text()).collect::<Vec<_>>();
let asked_on = node.find(Class("relativetime")).next().unwrap().text();
let asker = node.find(Class("user-details").descendant(Name("a")))
.next()
.unwrap()
.text();
println!(" Question: {}", question.text());
println!(" Answers: {}", answers);
println!(" Votes: {}", votes);
println!(" Tagged: {}", tags.join(", "));
println!(" Asked on: {}", asked_on);
println!(" Asker: {}", asker);
println!("Permalink: http://stackoverflow.com{}",
question.attr("href").unwrap());
println!("");
}
println!("# Top 10 Related Tags");
for node in document.find(Attr("id", "h-related-tags"))
.next()
.unwrap()
.parent()
.unwrap()
.find(Name("div"))
.take(10) {
let tag = node.find(Name("a")).next().unwrap().text();
let count = node.find(Class("item-multiplier-count")).next().unwrap().text();
println!("{} ({})", tag, count);
}
}prints
# Menu
Questions ("/questions")
Tags ("/tags")
Users ("/users")
Badges ("/help/badges")
Unanswered ("/unanswered")
Ask Question ("/questions/ask")
# Top 5 Questions
Question: Applications and libraries written in Rust [closed]
Answers: 8
Votes: 67
Tagged: rust
Asked on: Feb 19 '12 at 14:39
Asker: Atom
Permalink: http://stackoverflow.com/questions/9350125/applications-and-libraries-written-in-rust
Question: How to debug Rust programs? [closed]
Answers: 6
Votes: 52
Tagged: rust
Asked on: Apr 8 '13 at 5:30
Asker: macropas
Permalink: http://stackoverflow.com/questions/15871885/how-to-debug-rust-programs
Question: How to access command line parameters?
Answers: 9
Votes: 51
Tagged: rust
Asked on: Mar 25 '13 at 15:59
Asker: shutefan
Permalink: http://stackoverflow.com/questions/15619320/how-to-access-command-line-parameters
Question: Why are explicit lifetimes needed in Rust?
Answers: 6
Votes: 48
Tagged: pointers, rust, static-analysis, lifetime
Asked on: Jul 24 at 11:15
Asker: jco
Permalink: http://stackoverflow.com/questions/31609137/why-are-explicit-lifetimes-needed-in-rust
Question: What is the difference between traits in Rust and typeclasses in Haskell?
Answers: 1
Votes: 46
Tagged: haskell, rust
Asked on: Jan 24 at 7:50
Asker: LogicChains
Permalink: http://stackoverflow.com/questions/28123453/what-is-the-difference-between-traits-in-rust-and-typeclasses-in-haskell
# Top 10 Related Tags
lifetime (165)
traits (83)
rust-cargo (79)
string (76)
ffi (62)
iterator (58)
multithreading (50)
generics (50)
arrays (49)
borrow-checker (47)
MIT