From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- vendor/quick-error-1.2.3/examples/context.rs | 48 ++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 vendor/quick-error-1.2.3/examples/context.rs (limited to 'vendor/quick-error-1.2.3/examples/context.rs') diff --git a/vendor/quick-error-1.2.3/examples/context.rs b/vendor/quick-error-1.2.3/examples/context.rs new file mode 100644 index 000000000..334700a03 --- /dev/null +++ b/vendor/quick-error-1.2.3/examples/context.rs @@ -0,0 +1,48 @@ +#[macro_use(quick_error)] extern crate quick_error; + +use std::io::{self, stderr, Read, Write}; +use std::fs::File; +use std::env; +use std::num::ParseIntError; +use std::path::{Path, PathBuf}; + +use quick_error::ResultExt; + +quick_error! { + #[derive(Debug)] + pub enum Error { + NoFileName { + description("no file name specified") + } + Io(err: io::Error, path: PathBuf) { + display("could not read file {:?}: {}", path, err) + context(path: &'a Path, err: io::Error) + -> (err, path.to_path_buf()) + } + Parse(err: ParseIntError, path: PathBuf) { + display("could not parse file {:?}: {}", path, err) + context(path: &'a Path, err: ParseIntError) + -> (err, path.to_path_buf()) + } + } +} + +fn parse_file() -> Result { + let fname = try!(env::args().skip(1).next().ok_or(Error::NoFileName)); + let fname = Path::new(&fname); + let mut file = try!(File::open(fname).context(fname)); + let mut buf = String::new(); + try!(file.read_to_string(&mut buf).context(fname)); + Ok(try!(buf.parse().context(fname))) +} + +fn main() { + match parse_file() { + Ok(val) => { + println!("Read: {}", val); + } + Err(e) => { + writeln!(&mut stderr(), "Error: {}", e).ok(); + } + } +} -- cgit v1.2.3