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#![allow(dead_code)]
#[macro_use]
extern crate anyhow;
use opensc_sys as ffi;
pub struct Context {
_parms: ffi::sc_context_param_t,
ctx: *mut ffi::sc_context_t,
}
impl Context {
pub fn new() -> anyhow::Result<Self> {
unsafe {
let parms = std::mem::zeroed();
let mut ctx: *mut ffi::sc_context_t = std::ptr::null_mut();
let r = ffi::sc_context_create(&mut ctx, &parms);
if r < 0 || ctx == std::ptr::null_mut() {
let err_str = std::ffi::CStr::from_ptr(ffi::sc_strerror(r))
.to_string_lossy()
.into_owned();
return Err(anyhow!("Failed to create initial context: {}", err_str));
}
Ok(Self { _parms: parms, ctx })
}
}
unsafe fn inner(&self) -> *mut ffi::sc_context_t {
return self.ctx;
}
}
impl Drop for Context {
fn drop(&mut self) {
unsafe { ffi::sc_release_context(self.ctx); }
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn create_context() {
let ctx = Context::new().expect("context created");
let raw_ctx = unsafe { ctx.inner() };
assert!(!raw_ctx.is_null());
}
}