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Improved project structure

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einisto 2022-06-06 11:56:52 +03:00
parent a101ec3344
commit 235591e1b0
6 changed files with 180 additions and 491 deletions
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393
Cargo.lock generated
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Cargo.toml
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@ -1,5 +1,5 @@
[package] [package]
name = "rusty-wgdl" name = "rusty-downloader"
version = "0.1.0" version = "0.1.0"
edition = "2021" edition = "2021"
@ -12,4 +12,3 @@ reqwest = { version = "0.11", features = ["json"] }
tokio = { version = "1.18.2", features = ["full"] } tokio = { version = "1.18.2", features = ["full"] }
serde_json = "1.0" serde_json = "1.0"
futures = "0.3" futures = "0.3"
image = "0.24.2"

73
src/board.rs Normal file
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@ -0,0 +1,73 @@
use serde_json::Value;
use std::path::PathBuf;
type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
pub fn parse_url(url: &str) -> (String, String) {
let url_split: Vec<&str> = url.split("/").collect();
let board_name = url_split.get(url_split.len() - 2).unwrap();
(
format!("https://a.4cdn.org/{}/catalog.json", board_name),
board_name.to_string(),
)
}
// TODO: use futures
pub async fn get_imagelist(
json_url: &str,
board_name: &str,
output_path: &PathBuf,
) -> Result<(Vec<(String, PathBuf)>, usize)> {
let mut img_data: Vec<(String, PathBuf)> = Vec::new();
let board_data = get_threadlist(json_url, board_name).await?;
for thread_url in &board_data {
let res_body = reqwest::get(thread_url).await?.text().await?;
let json_data: Value = serde_json::from_str(res_body.as_str())?;
json_data["posts"]
.as_array()
.unwrap()
.iter()
.filter(|post| post["tim"].is_i64())
.for_each(|post| {
let id = post["tim"].to_string();
let ext = post["ext"].as_str().unwrap().to_string();
let filepath = output_path.join(format!("{}{}", id, ext).as_str());
println!("{:#?}", filepath);
img_data.push((
format!("https://i.4cdn.org/{}/{}{}", board_name, id, ext),
filepath,
));
});
}
Ok((img_data, board_data.len()))
}
async fn get_threadlist(json_url: &str, board_name: &str) -> Result<Vec<String>> {
let req_body = reqwest::get(json_url).await?.text().await?;
let json_data: Value = serde_json::from_str(req_body.as_str())?;
let board: Vec<Value> = json_data
.as_array()
.unwrap()
.iter()
.map(|page| page["threads"].clone())
.collect();
let mut board_data: Vec<String> = Vec::new();
board.iter().for_each(|thread_arr| {
thread_arr.as_array().unwrap().iter().for_each(|thread| {
let url = format!(
"https://a.4cdn.org/{}/thread/{}.json",
board_name, thread["no"]
);
board_data.push(url);
});
});
Ok(board_data)
}

33
src/downloader.rs Normal file
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@ -0,0 +1,33 @@
use futures::{stream, StreamExt};
use reqwest::Client;
use std::path::PathBuf;
use tokio::{fs::File, io::AsyncWriteExt};
type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
pub async fn download_images(img_data: &Vec<(String, PathBuf)>) -> Result<usize> {
let client = Client::builder().build()?;
let futures = stream::iter(img_data.iter().map(|data| async {
let (url, path) = data;
let send_fut = client.get(url).send();
match send_fut.await {
Ok(res) => match res.bytes().await {
Ok(bytes) => {
let mut file = File::create(path).await.unwrap();
file.write_all(&bytes).await.unwrap();
println!("{} bytes from {:?} to {:?}", bytes.len(), &url, &path);
}
Err(_) => eprintln!("Error reading bytes from {}", url),
},
Err(_) => eprintln!("Error downloading {}", url),
}
}))
.buffer_unordered(100)
.collect::<Vec<()>>();
futures.await;
Ok(img_data.len())
}

123
src/main.rs
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@ -1,15 +1,15 @@
use clap::{Arg, ArgGroup, Command}; mod board;
use futures::{stream, StreamExt}; mod downloader;
use regex::Regex; mod thread;
use reqwest::Client;
use serde_json::Value; use clap::{Arg, ArgGroup, Command};
use std::{path::PathBuf, process::exit}; use regex::Regex;
use tokio::{fs::File, io::AsyncWriteExt}; use std::{path::PathBuf, process::exit};
use tokio;
// General type to make error handling easier
type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>; type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
#[derive(Debug, PartialEq, Eq)] #[derive(Debug)]
enum Mode { enum Mode {
Thread, Thread,
Board, Board,
@ -73,105 +73,32 @@ fn parse_cli_args() -> Result<(PathBuf, String, Mode)> {
Ok((path, String::from(target), mode)) Ok((path, String::from(target), mode))
} }
fn create_thread_url(target: String) -> (String, String) {
let url_vec: Vec<&str> = target.split("/").collect();
let thread_id = url_vec.get(url_vec.len() - 1).unwrap();
let board = url_vec.get(url_vec.len() - 3).unwrap();
(
format!("https://a.4cdn.org/{}/thread/{}.json", board, thread_id),
board.to_string(),
)
}
//fn _create_board_url(target: String) -> String {
// let url_vec: Vec<&str> = target.split("/").collect();
// let board = url_vec.get(url_vec.len()).unwrap();
//
// format!("https://a.4cdn.org/{}/catalog.json", board)
//}
async fn get_imagelist(
json_url: &str,
board_name: &str,
output_path: &PathBuf,
) -> Result<Vec<(String, PathBuf)>> {
let req_body = reqwest::get(json_url).await?.text().await?;
let json_data: Value = serde_json::from_str(req_body.as_str())?;
let mut thread_img_data: Vec<(String, PathBuf)> = Vec::new();
json_data["posts"]
.as_array()
.unwrap()
.iter()
.filter(|post| post["tim"].is_i64())
.for_each(|post| {
let id = post["tim"].to_string();
let ext = post["ext"].as_str().unwrap().to_string();
let filepath = output_path.join(format!("{}{}", id, ext).as_str());
thread_img_data.push((
format!("https://i.4cdn.org/{}/{}{}", board_name, id, ext),
filepath,
))
});
Ok(thread_img_data)
}
async fn download_images(input_output_data: &Vec<(String, PathBuf)>) -> Result<u16> {
let client = Client::builder().build()?;
let futures = stream::iter(input_output_data.iter().map(|data| async {
let (url, path) = data;
let send_fut = client.get(url).send();
match send_fut.await {
Ok(res) => match res.bytes().await {
Ok(bytes) => {
let mut file = File::create(path).await.unwrap();
file.write_all(&bytes).await.unwrap();
println!("Got {} bytes from {:?} to {:?}", bytes.len(), &url, &path)
}
Err(_) => eprintln!("Error reading bytes from {}", url),
},
Err(_) => eprintln!("Error downloading {}", url),
}
}))
.buffer_unordered(100)
.collect::<Vec<()>>();
futures.await;
Ok(0)
}
#[tokio::main] #[tokio::main]
async fn main() -> Result<()> { async fn main() -> Result<()> {
let (path, target, mode) = parse_cli_args()?; let (path, target, mode) = parse_cli_args()?;
println!( println!(
"\nDownload configuration:\n\tOUTPUT: {:?}\n\tURL: {}\n\tDOWNLOAD-MODE: {:?}\n", "\nDownload configuration:\n\tOUTPUT PATH: {:?}\n\tURL: {}\n\tDOWNLOAD MODE: {:?}\n",
path, target, mode path, target, mode
); );
match mode { match mode {
Mode::Thread => { Mode::Thread => {
let (json_url, board_name) = create_thread_url(target); let (json_url, board_name) = thread::parse_url(&target);
let targets = get_imagelist(&json_url.as_str(), &board_name.as_str(), &path).await?; let img_data = thread::get_imagelist(&json_url, &board_name, &path).await?;
let _total_file_amount = download_images(&targets).await?; let total_amt = downloader::download_images(&img_data).await?;
println!("Total of {} files downloaded from 1 thread.\n", total_amt);
//println!("Total files downloaded: {}", total_file_amount); }
Mode::Board => {
let (json_url, board_name) = board::parse_url(&target);
let (img_data, thread_amt) =
board::get_imagelist(&json_url, &board_name, &path).await?;
let total_amt = downloader::download_images(&img_data).await?;
println!(
"Total of {} files downloaded from {} threads.\n",
total_amt, thread_amt
);
}
} }
//Mode::Board => {
// let json_url = create_board_url(target);
// let id_list = get_imagelist(&json_url.as_str()).await?;
// //println!("{:#?}", id_list);
// get_images(id_list).await?;
//}
_ => println!("Not supported"),
};
Ok(()) Ok(())
} }

46
src/thread.rs Normal file
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@ -0,0 +1,46 @@
use serde_json::Value;
use std::path::PathBuf;
type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
pub fn parse_url(url: &str) -> (String, String) {
let url_split: Vec<&str> = url.split("/").collect();
let thread_id = url_split.get(url_split.len() - 1).unwrap();
let board_name = url_split.get(url_split.len() - 3).unwrap();
(
format!(
"https://a.4cdn.org/{}/thread/{}.json",
board_name, thread_id
),
board_name.to_string(),
)
}
pub async fn get_imagelist(
json_url: &str,
board_name: &str,
output_path: &PathBuf,
) -> Result<Vec<(String, PathBuf)>> {
let req_body = reqwest::get(json_url).await?.text().await?;
let json_data: Value = serde_json::from_str(req_body.as_str())?;
let mut img_data: Vec<(String, PathBuf)> = Vec::new();
json_data["posts"]
.as_array()
.unwrap()
.iter()
.filter(|post| post["tim"].is_i64())
.for_each(|post| {
let id = post["tim"].to_string();
let ext = post["ext"].as_str().unwrap().to_string();
let filepath = output_path.join(format!("{}{}", id, ext).as_str());
img_data.push((
format!("https://i.4cdn.org/{}/{}{}", board_name, id, ext),
filepath,
))
});
Ok(img_data)
}