Refactor read_passwd

Line-reading logic is now in its own method
This commit is contained in:
Markus Unterwaditzer 2016-03-20 16:15:05 +01:00
parent 12e08141c4
commit cdd7a302b2
1 changed files with 17 additions and 9 deletions

View File

@ -80,12 +80,22 @@ pub trait TermRead {
#[cfg(feature = "nightly")] #[cfg(feature = "nightly")]
fn keys(self) -> Keys<Chars<Self>> where Self: Sized; fn keys(self) -> Keys<Chars<Self>> where Self: Sized;
/// Read a line.
///
/// EOT and ETX will abort the prompt, returning `None`. Newline or carriage return will
/// complete the input.
fn read_line(&mut self) -> io::Result<Option<String>>;
/// Read a password. /// Read a password.
/// ///
/// EOT and ETX will abort the prompt, returning `None`. Newline or carriage return will /// EOT and ETX will abort the prompt, returning `None`. Newline or carriage return will
/// complete the password input. /// complete the input.
fn read_passwd<W: Write>(&mut self, writer: &mut W) -> io::Result<Option<String>>; fn read_passwd<W: Write>(&mut self, writer: &mut W) -> io::Result<Option<String>> {
let _raw = try!(writer.into_raw_mode());
self.read_line()
} }
}
impl<R: Read> TermRead for R { impl<R: Read> TermRead for R {
#[cfg(feature = "nightly")] #[cfg(feature = "nightly")]
@ -95,22 +105,20 @@ impl<R: Read> TermRead for R {
} }
} }
fn read_passwd<W: Write>(&mut self, writer: &mut W) -> io::Result<Option<String>> { fn read_line(&mut self) -> io::Result<Option<String>> {
let _raw = try!(writer.into_raw_mode()); let mut buf = Vec::with_capacity(30);
let mut passbuf = Vec::with_capacity(30);
for c in self.bytes() { for c in self.bytes() {
match c { match c {
Err(e) => return Err(e), Err(e) => return Err(e),
Ok(0) | Ok(3) | Ok(4) => return Ok(None), Ok(0) | Ok(3) | Ok(4) => return Ok(None),
Ok(b'\n') | Ok(b'\r') => break, Ok(b'\n') | Ok(b'\r') => break,
Ok(c) => passbuf.push(c), Ok(c) => buf.push(c),
} }
} }
let passwd = try!(String::from_utf8(passbuf).map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e))); let string = try!(String::from_utf8(buf).map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e)));
Ok(Some(string))
Ok(Some(passwd))
} }
} }