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69 lines
2.2 KiB
Rust
69 lines
2.2 KiB
Rust
use crate::utils::{clean_url, data_to_data_url, is_data_url};
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use reqwest::blocking::Client;
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use reqwest::header::CONTENT_TYPE;
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use std::collections::HashMap;
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pub fn retrieve_asset(
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cache: &mut HashMap<String, String>,
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client: &Client,
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url: &str,
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as_data_url: bool,
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mime: &str,
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opt_silent: bool,
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) -> Result<(String, String), reqwest::Error> {
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let cache_key = clean_url(&url);
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if is_data_url(&url) {
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Ok((url.to_string(), url.to_string()))
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} else {
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if cache.contains_key(&cache_key) {
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// url is in cache
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if !opt_silent {
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eprintln!("{} (from cache)", &url);
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}
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let data = cache.get(&cache_key).unwrap();
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Ok((data.to_string(), url.to_string()))
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} else {
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// url not in cache, we request it
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let mut response = client.get(url).send()?;
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let res_url = response.url().to_string();
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if !opt_silent {
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if url == res_url {
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eprintln!("{}", &url);
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} else {
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eprintln!("{} -> {}", &url, &res_url);
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}
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}
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let new_cache_key = clean_url(&res_url);
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if as_data_url {
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// Convert response into a byte array
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let mut data: Vec<u8> = vec![];
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response.copy_to(&mut data)?;
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// Attempt to obtain MIME type by reading the Content-Type header
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let mimetype = if mime == "" {
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response
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.headers()
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.get(CONTENT_TYPE)
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.and_then(|header| header.to_str().ok())
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.unwrap_or(&mime)
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} else {
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mime
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};
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let data_url = data_to_data_url(&mimetype, &data);
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// insert in cache
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cache.insert(new_cache_key, data_url.clone());
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Ok((data_url, res_url))
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} else {
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let content = response.text().unwrap();
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// insert in cache
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cache.insert(new_cache_key, content.clone());
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Ok((content, res_url))
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}
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}
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}
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}
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