mdblog/
utils.rs

1use std::error::Error as StdError;
2use std::fs::File;
3use std::io::{Read, Write};
4use std::path::Path;
5
6use pulldown_cmark::{html, Options, Parser};
7use tracing::error;
8
9use crate::error::Result;
10
11/// create the file of `path` and append content
12///
13/// if parent of `path` does not existed, create it first.
14pub fn write_file(path: &Path, buf: &[u8]) -> Result<()> {
15    if let Some(p) = path.parent() {
16        std::fs::create_dir_all(p)?;
17    }
18    let mut file = File::create(path)?;
19    file.write_all(buf)?;
20    Ok(())
21}
22
23/// read the file content of `path` to `buf`
24pub fn read_file<P: AsRef<Path>>(path: P, buf: &mut Vec<u8>) -> Result<()> {
25    let mut f = File::open(path)?;
26    f.read_to_end(buf)?;
27    Ok(())
28}
29
30/// the rendered html content of post body port
31pub fn markdown_to_html(content: &str) -> String {
32    let mut opts = Options::empty();
33    opts.insert(Options::ENABLE_TABLES);
34    opts.insert(Options::ENABLE_FOOTNOTES);
35    opts.insert(Options::ENABLE_TASKLISTS);
36    opts.insert(Options::ENABLE_STRIKETHROUGH);
37    let mut s = String::with_capacity(content.len() * 3 / 2);
38    let p = Parser::new_ext(content, opts);
39    html::push_html(&mut s, p);
40    s
41}
42
43/// basic error reporting, including the "cause chain".
44pub(crate) fn log_error_chain(mut e: &dyn StdError) {
45    error!("error: {}", e);
46    while let Some(source) = e.source() {
47        error!("caused by: {}", source);
48        e = source;
49    }
50}
mdblog/utils.rs

mdblog/
utils.rs
