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use std::io::{self, prelude::*}; use ffi; use libc; use crate::Error; pub use cstr_argument::CStrArgument; pub type SmallVec<T> = ::smallvec::SmallVec<[T; 4]>; macro_rules! impl_wrapper { ($T:ty$(, $Args:expr)*) => { #[inline] pub unsafe fn from_raw(raw: $T) -> Self { Self(NonNull::<$T>::new(raw).unwrap()$(, $Args)*) } #[inline] pub fn as_raw(&self) -> $T { self.0.as_ptr() } #[inline] pub fn into_raw(self) -> $T { let raw = self.as_raw(); ::std::mem::forget(self); raw } }; } macro_rules! impl_list_iterator { ($Vis:vis struct $Name:ident($Item:ident: $Raw:ty)) => { #[derive(Clone)] $Vis struct $Name<'a>(Option<$Item<'a>>); impl $Name<'_> { #[inline] pub unsafe fn from_list(first: $Raw) -> Self { $Name(first.as_mut().map(|r| $Item::from_raw(r))) } } impl<'a> Iterator for $Name<'a> { type Item = $Item<'a>; #[inline] fn next(&mut self) -> Option<Self::Item> { unsafe { self.0.take().map(|c| { self.0 = (*c.as_raw()).next.as_mut().map(|r| $Item::from_raw(r)); c }) } } } impl ::std::iter::FusedIterator for $Name<'_> {} impl ::std::fmt::Debug for $Name<'_> { fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result { f.debug_list().entries(self.clone()).finish() } } }; } macro_rules! ffi_enum_wrapper { ($(#[$Attr:meta])* $Vis:vis enum $Name:ident($Default:ident): $T:ty { $($(#[$ItemAttr:meta])* $Item:ident = $Value:expr),+ }) => { #[derive(Copy, Clone, Eq, PartialEq, Hash)] $(#[$Attr])* $Vis enum $Name { $($(#[$ItemAttr])* $Item,)+ } impl $Name { #[inline] pub unsafe fn from_raw(raw: $T) -> $Name { $(if raw == $Value { $Name::$Item } else )+ { $Name::$Default } } #[inline] pub fn raw(&self) -> $T { match *self { $($Name::$Item => $Value,)+ } } } impl ::std::fmt::Debug for $Name { fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result { match *self { $($Name::$Item => { write!(f, concat!(stringify!($Name), "::", stringify!($Item), "({:?})"), self.raw()) })+ } } } }; ($(#[$Attr:meta])* $Vis:vis enum $Name:ident($Default:ident): $T:ty { $($(#[$ItemAttr:meta])* $Item:ident = $Value:expr,)+ }) => { ffi_enum_wrapper! { $(#[$Attr])* $Vis enum $Name($Default): $T { $($(#[$ItemAttr])* $Item = $Value),+ } } }; ($(#[$Attr:meta])* $Vis:vis enum $Name:ident: $T:ty { $($(#[$ItemAttr:meta])* $Item:ident = $Value:expr),+ }) => { #[derive(Copy, Clone, Eq, PartialEq, Hash)] $(#[$Attr])* $Vis enum $Name { $($(#[$ItemAttr])* $Item,)+ Other($T), } impl $Name { #[inline] pub unsafe fn from_raw(raw: $T) -> $Name { $(if raw == $Value { $Name::$Item } else )+ { $Name::Other(raw) } } #[inline] pub fn raw(&self) -> $T { match *self { $($Name::$Item => $Value,)+ $Name::Other(other) => other, } } } impl ::std::fmt::Debug for $Name { fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result { match *self { $($Name::$Item => { write!(f, concat!(stringify!($Name), "::", stringify!($Item), "({:?})"), self.raw()) })+ _ => write!(f, concat!(stringify!($Name), "({:?})"), self.raw()), } } } }; ($(#[$Attr:meta])* $Vis:vis enum $Name:ident: $T:ty { $($(#[$ItemAttr:meta])* $Item:ident = $Value:expr,)+ }) => { ffi_enum_wrapper! { $(#[$Attr])* $Vis enum $Name: $T { $($(#[$ItemAttr])* $Item = $Value),+ } } }; } pub(crate) struct FdWriter(libc::c_int); impl FdWriter { pub unsafe fn new(fd: libc::c_int) -> FdWriter { Self(fd) } } impl Write for FdWriter { fn write(&mut self, buf: &[u8]) -> io::Result<usize> { let result = unsafe { ffi::gpgme_io_write(self.0, buf.as_ptr() as *const _, buf.len().into()) }; if result >= 0 { Ok(result as usize) } else { Err(Error::last_os_error().into()) } } fn flush(&mut self) -> io::Result<()> { Ok(()) } } pub(crate) trait Ptr { type Inner; } impl<T> Ptr for *mut T { type Inner = T; } impl<T> Ptr for *const T { type Inner = T; }