From 681cc8882f7995407c33eb48730daaa901074460 Mon Sep 17 00:00:00 2001
From: Daniel Mueller <deso@posteo.net>
Date: Sat, 4 Apr 2020 15:32:14 -0700
Subject: Move nitrocli source code into repository root

Now that all vendored dependencies have been removed, this change moves
the program's source code from the nitrocli/ directory into the root of
the repository.
---
 src/error.rs | 104 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 src/error.rs

(limited to 'src/error.rs')

diff --git a/src/error.rs b/src/error.rs
new file mode 100644
index 0000000..819bed8
--- /dev/null
+++ b/src/error.rs
@@ -0,0 +1,104 @@
+// error.rs
+
+// *************************************************************************
+// * Copyright (C) 2017-2019 Daniel Mueller (deso@posteo.net)              *
+// *                                                                       *
+// * This program is free software: you can redistribute it and/or modify  *
+// * it under the terms of the GNU General Public License as published by  *
+// * the Free Software Foundation, either version 3 of the License, or     *
+// * (at your option) any later version.                                   *
+// *                                                                       *
+// * This program is distributed in the hope that it will be useful,       *
+// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+// * GNU General Public License for more details.                          *
+// *                                                                       *
+// * You should have received a copy of the GNU General Public License     *
+// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
+// *************************************************************************
+
+use std::fmt;
+use std::io;
+use std::str;
+use std::string;
+
+/// A trait used to simplify error handling in conjunction with the
+/// try_with_* functions we use for repeatedly asking the user for a
+/// secret.
+pub trait TryInto<T> {
+  fn try_into(self) -> Result<T, Error>;
+}
+
+impl<T, U> TryInto<U> for T
+where
+  T: Into<U>,
+{
+  fn try_into(self) -> Result<U, Error> {
+    Ok(self.into())
+  }
+}
+
+#[derive(Debug)]
+pub enum Error {
+  ArgparseError(i32),
+  IoError(io::Error),
+  NitrokeyError(Option<&'static str>, nitrokey::Error),
+  Utf8Error(str::Utf8Error),
+  Error(String),
+}
+
+impl TryInto<nitrokey::Error> for Error {
+  fn try_into(self) -> Result<nitrokey::Error, Error> {
+    match self {
+      Error::NitrokeyError(_, err) => Ok(err),
+      err => Err(err),
+    }
+  }
+}
+
+impl From<&str> for Error {
+  fn from(s: &str) -> Error {
+    Error::Error(s.to_string())
+  }
+}
+
+impl From<nitrokey::Error> for Error {
+  fn from(e: nitrokey::Error) -> Error {
+    Error::NitrokeyError(None, e)
+  }
+}
+
+impl From<io::Error> for Error {
+  fn from(e: io::Error) -> Error {
+    Error::IoError(e)
+  }
+}
+
+impl From<str::Utf8Error> for Error {
+  fn from(e: str::Utf8Error) -> Error {
+    Error::Utf8Error(e)
+  }
+}
+
+impl From<string::FromUtf8Error> for Error {
+  fn from(e: string::FromUtf8Error) -> Error {
+    Error::Utf8Error(e.utf8_error())
+  }
+}
+
+impl fmt::Display for Error {
+  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+    match *self {
+      Error::ArgparseError(_) => write!(f, "Could not parse arguments"),
+      Error::NitrokeyError(ref ctx, ref e) => {
+        if let Some(ctx) = ctx {
+          write!(f, "{}: ", ctx)?;
+        }
+        write!(f, "{}", e)
+      }
+      Error::Utf8Error(_) => write!(f, "Encountered UTF-8 conversion error"),
+      Error::IoError(ref e) => write!(f, "IO error: {}", e),
+      Error::Error(ref e) => write!(f, "{}", e),
+    }
+  }
+}
-- 
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