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Change CLI option to allow for multiple arguments

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Add basic looping in async runtime
This commit is contained in:
Kenneth Gitere 2020-10-22 15:22:56 +03:00
parent db11e78d8c
commit 1b4c4ee658
2 changed files with 57 additions and 46 deletions
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2
src/cli.rs
View file

@ -9,5 +9,5 @@ use structopt::StructOpt;
pub struct Opts {
// #[structopt(conflicts_with("links"))]
/// Url of a web article
pub url: Option<String>,
pub urls: Vec<String>,
}

101
src/main.rs
View file

@ -15,63 +15,74 @@ mod moz_readability;
use extractor::Extractor;
fn main() {
let opt = cli::Opts::from_args();
if let Some(url) = opt.url {
if !opt.urls.is_empty() {
println!("Downloading single article");
download(url)
download(opt.urls);
}
}
async fn fetch_url(url: &str) -> String {
type HTMLResource = (String, String);
async fn fetch_url(url: &str) -> HTMLResource {
let client = surf::Client::new();
println!("Fetching...");
// TODO: Add middleware for following redirects
client
.get(url)
.recv_string()
.await
.expect("Unable to fetch URL")
(
url.to_string(),
client
.get(url)
.recv_string()
.await
.expect("Unable to fetch URL"),
)
}
fn download(url: String) {
fn download(urls: Vec<String>) {
let mut async_url_tasks = Vec::with_capacity(urls.len());
for url in urls {
async_url_tasks.push(task::spawn(async move { fetch_url(&url).await }));
}
task::block_on(async {
let html = fetch_url(&url).await;
println!("Extracting");
let mut extractor = Extractor::from_html(&html);
extractor.extract_content(&url);
if extractor.article().is_some() {
create_dir("res/")
.await
.expect("Unable to create res/ output folder");
extractor
.download_images(&Url::parse(&url).unwrap())
.await
.expect("Unable to download images");
let mut out_file =
File::create(format!("{}.epub", extractor.metadata().title())).unwrap();
let mut html_buf = Vec::new();
extractor
.article()
.unwrap()
.serialize(&mut html_buf)
.expect("Unable to serialize");
let html_buf = std::str::from_utf8(&html_buf).unwrap();
let mut epub = EpubBuilder::new(ZipLibrary::new().unwrap()).unwrap();
if let Some(author) = extractor.metadata().byline() {
epub.metadata("author", author).unwrap();
}
epub.metadata("title", extractor.metadata().title())
.unwrap();
epub.add_content(EpubContent::new("code.xhtml", html_buf.as_bytes()))
.unwrap();
for img in extractor.img_urls {
let file_path = format!("{}", &img.0);
for url_task in async_url_tasks {
let (url, html) = url_task.await;
println!("Extracting");
let mut extractor = Extractor::from_html(&html);
extractor.extract_content(&url);
if extractor.article().is_some() {
create_dir("res/")
.await
.expect("Unable to create res/ output folder");
extractor
.download_images(&Url::parse(&url).unwrap())
.await
.expect("Unable to download images");
let mut out_file =
File::create(format!("{}.epub", extractor.metadata().title())).unwrap();
let mut html_buf = Vec::new();
extractor
.article()
.unwrap()
.serialize(&mut html_buf)
.expect("Unable to serialize");
let html_buf = std::str::from_utf8(&html_buf).unwrap();
let mut epub = EpubBuilder::new(ZipLibrary::new().unwrap()).unwrap();
if let Some(author) = extractor.metadata().byline() {
epub.metadata("author", author).unwrap();
}
epub.metadata("title", extractor.metadata().title())
.unwrap();
epub.add_content(EpubContent::new("code.xhtml", html_buf.as_bytes()))
.unwrap();
for img in extractor.img_urls {
let file_path = format!("{}", &img.0);
let img_buf = File::open(file_path).expect("Can't read file");
epub.add_resource(img.0, img_buf, img.1.unwrap()).unwrap();
let img_buf = File::open(file_path).expect("Can't read file");
epub.add_resource(img.0, img_buf, img.1.unwrap()).unwrap();
}
epub.generate(&mut out_file).unwrap();
println!("Cleaning up");
remove_dir_all("res/").await.unwrap();
}
epub.generate(&mut out_file).unwrap();
println!("Cleaning up");
remove_dir_all("res/").await.unwrap();
}
})
}