mdoc 0.3.0

Modern PDF creation through Markdown and LaTeX
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

use crate::utils::{data_dir, find_root, write_file};
use anyhow::{anyhow, Result};
use std::io::Read;
use std::path::PathBuf;
use url::Url;

pub fn get_csl(id: &str) -> Result<PathBuf> {
    if let Ok(root) = find_root() {
        // First check if id is relative path
        let path = root.join(id);

        if path.exists() {
            return Ok(path);
        }
    }

    let url = if let Ok(url) = Url::parse(id) {
        // id is parsable URL, so use that URL
        url
    } else {
        // id is the filestem of a CSL file contained in the citation-style-language/styles repo
        Url::parse("https://raw.githubusercontent.com/citation-style-language/styles/master/")?
            .join(&format!("{id}.csl"))?
    };

    let filename = url
        .path_segments()
        .ok_or_else(|| anyhow!("Could not determine the segments of \"{url}\".\nDoes your URL point to a valid CSL file?"))?
        .last()
        .ok_or_else(|| anyhow!("Unable to find the filename of \"{url}\".\nDoes your URL point to a valid CSL file?"))?;

    let path = data_dir().join("csl").join(filename).with_extension("csl");

    if !path.exists() {
        // If a cached CSL file doesn't exist, download it
        info!(
            "Fetching {:?} from \"{url}\" ...",
            path.file_name().unwrap()
        );
        let resp = ureq::get(url.as_str()).call()?;

        let mut bytes = Vec::new();
        resp.into_reader()
            .take(10_000_000)
            .read_to_end(&mut bytes)?;

        write_file(&path, &bytes)?;
    }

    Ok(path)
}