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use crate::error::Error; use libbfio_sys::FILE; use libyal_rs_common::ffi::AsTypeRef; use log::trace; use std::convert::TryFrom; use std::ffi::{CStr}; #[repr(C)] pub struct __LibbfioError(isize); pub type LibbfioErrorRefMut = *mut __LibbfioError; pub type LibbfioErrorRef = *const __LibbfioError; #[repr(C)] pub struct LibbfioError(LibbfioErrorRefMut); impl AsTypeRef for LibbfioError { type Ref = LibbfioErrorRef; type RefMut = LibbfioErrorRefMut; fn as_type_ref(&self) -> Self::Ref { self.0 as *const _ } fn as_type_ref_mut(&mut self) -> Self::RefMut { self.0 } fn as_raw(&mut self) -> *mut Self::RefMut { &mut self.0 as *mut _ } } extern "C" { pub fn libbfio_error_free(error: *mut LibbfioErrorRefMut); pub fn libbfio_error_fprint(error: LibbfioErrorRef, stream: *mut FILE) -> ::std::os::raw::c_int; pub fn libbfio_error_sprint( error: LibbfioErrorRef, string: *mut ::std::os::raw::c_char, size: usize, ) -> ::std::os::raw::c_int; pub fn libbfio_error_backtrace_fprint( error: LibbfioErrorRef, stream: *mut FILE, ) -> ::std::os::raw::c_int; pub fn libbfio_error_backtrace_sprint( error: LibbfioErrorRef, string: *mut ::std::os::raw::c_char, size: usize, ) -> ::std::os::raw::c_int; } impl Drop for LibbfioError { fn drop(&mut self) { trace!("Calling `libbfio_error_free`"); unsafe { libbfio_error_free(self.as_raw()) }; } } impl TryFrom<*mut __LibbfioError> for Error { type Error = Error; fn try_from(err: *mut __LibbfioError) -> Result<Self, Self::Error> { if err.is_null() { return Err(Error::Other("Error pointer cannot be NULL".to_owned())); } let mut buffer = vec![0; 1024]; let retcode = unsafe { libbfio_error_sprint(err as *const _, buffer.as_mut_ptr(), buffer.len()) }; if retcode == -1 { Err(Error::FFI("Failed to print error".to_owned())) } else { let repr = unsafe { CStr::from_ptr(buffer.as_ptr()) }; Ok(Error::FFI(repr.to_string_lossy().to_string())) } } }