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use structopt;
use gpgme::{Context, Protocol};
use std::{
error::Error,
fs::File,
io::{self, prelude::*},
path::PathBuf,
};
use structopt::StructOpt;
#[derive(Debug, StructOpt)]
struct Cli {
#[structopt(long)]
/// Use the CMS protocol
cms: bool,
#[structopt(parse(from_os_str))]
/// File to decrypt
filename: PathBuf,
}
fn main() -> Result<(), Box<dyn Error>> {
let args = Cli::from_args();
let proto = if args.cms {
Protocol::Cms
} else {
Protocol::OpenPgp
};
let mut ctx = Context::from_protocol(proto)?;
let mut input = File::open(&args.filename)?;
let mut output = Vec::new();
ctx.decrypt(&mut input, &mut output)
.map_err(|e| format!("decrypting failed: {:?}", e))?;
println!("Begin Output:");
io::stdout().write_all(&output)?;
println!("End Output.");
Ok(())
}
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