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use mailparse;
use whatlang::{self, Lang};
use xdg;
use std::error::Error;
use std::fs::File;
use std::io::{self, Read, Write};
const PROGRAM_NAME: &'static str = "ottolangy";
const MUTTRC_FILENAME: &'static str = "attribution.muttrc";
const ATTRIBUTION_FR: &'static str =
r#"set attribution = "Le %{%e %b. %Y à %H:%M %Z}, %f a écrit:"
"#;
const ATTRIBUTION_EN: &'static str =
r#"set attribution = "On %{%b %e, %Y, at %I:%M %p %Z}, %f wrote:"
"#;
fn main() {
match run() {
Ok(_) => (),
Err(e) => eprintln!("{}: error: {}", PROGRAM_NAME, e),
}
}
fn run() -> Result<(), Box<dyn Error>> {
let mut email_input: Vec<u8> = Vec::new();
let mut stdin = io::stdin();
stdin.read_to_end(&mut email_input)?;
let body = get_email_body(&email_input)?;
print!("{}", body);
let lang_info = whatlang::detect(&body)
.ok_or("unable to detect language")?;
println!("{:?}", lang_info);
let attribution_config = if lang_info.lang() == Lang::Fra {
ATTRIBUTION_FR
} else {
ATTRIBUTION_EN
};
write_attribution(&attribution_config)?;
Ok(())
}
fn get_email_body(email: &[u8]) -> Result<String, Box<dyn Error>> {
let email = mailparse::parse_mail(&email)?;
if email.subparts.is_empty() {
let body = email.get_body()?;
return Ok(body);
} else {
for part in email.subparts {
for header in part.get_headers() {
println!("{}: {}", header.get_key(), header.get_value());
if header.get_key() == "Content-Type"
&& header.get_value().starts_with("text/plain")
{
return Ok(part.get_body()?);
}
}
}
}
Err("parse".into())
}
fn write_attribution(config: &str) -> Result<(), Box<dyn Error>> {
let xdg_dirs = xdg::BaseDirectories::with_prefix(PROGRAM_NAME)?;
let muttrc_path = xdg_dirs.place_data_file(MUTTRC_FILENAME)?;
let mut file = File::create(muttrc_path)?;
file.write_all(config.as_bytes())?;
Ok(())
}
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