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use failure::{Backtrace, Context, Fail};
use std::fmt::{self, Debug, Display};
use yansi::Color;
/// Kinds of error which might happen during folder archive generation
#[derive(Clone, Debug, PartialEq, Eq, Fail)]
pub enum CompressionErrorKind {
#[fail(display = "Could not open file {}", path)]
OpenFileError { path: String },
#[fail(display = "Could not create temporary file")]
CreateTemporaryFileError,
#[fail(display = "Could not create file {}", path)]
CreateFileError { path: String },
#[fail(display = "Could not retrieve entity name from the given path.
This can either mean that the entity has non UTF-8 characters in its name,
or that its name ends with \"..\"")]
InvalidDirectoryName,
#[fail(display = "Failed to create the TAR archive: {}", message)]
TarBuildingError { message: String },
#[fail(display = "Failed to create the GZIP archive")]
GZipBuildingError,
#[fail(display = "Failed to retrieve TAR content")]
TarContentError,
#[fail(display = "Failed to retrieve GZIP content")]
GZipContentError,
}
pub fn print_chain(err: CompressionError) {
for cause in Fail::iter_causes(&err) {
println!(
"{} {}",
Color::Magenta.paint("Caused by:").to_string(),
cause
);
}
}
pub struct CompressionError {
inner: Context<CompressionErrorKind>,
}
impl CompressionError {
fn new(kind: CompressionErrorKind) -> CompressionError {
CompressionError {
inner: Context::new(kind),
}
}
}
impl Fail for CompressionError {
fn cause(&self) -> Option<&Fail> {
self.inner.cause()
}
fn backtrace(&self) -> Option<&Backtrace> {
self.inner.backtrace()
}
}
impl Display for CompressionError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
Display::fmt(&self.inner, f)
}
}
impl Debug for CompressionError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
Debug::fmt(&self.inner, f)
}
}
impl From<Context<CompressionErrorKind>> for CompressionError {
fn from(inner: Context<CompressionErrorKind>) -> CompressionError {
CompressionError { inner }
}
}
impl From<CompressionErrorKind> for CompressionError {
fn from(kind: CompressionErrorKind) -> CompressionError {
CompressionError {
inner: Context::new(kind),
}
}
}
impl From<std::option::NoneError> for CompressionError {
fn from(_: std::option::NoneError) -> CompressionError {
CompressionError::new(CompressionErrorKind::InvalidDirectoryName)
}
}
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