use ffi::OstreeSysrootDeployTreeOpts;
use glib::translate::*;
use libc::c_char;
#[derive(Default)]
pub struct SysrootDeployTreeOpts<'a> {
pub override_kernel_argv: Option<&'a [&'a str]>,
pub overlay_initrds: Option<&'a [&'a str]>,
}
type OptionStrSliceStorage<'a> =
<Option<&'a [&'a str]> as ToGlibPtr<'a, *mut *mut c_char>>::Storage;
impl<'a, 'b: 'a> ToGlibPtr<'a, *const OstreeSysrootDeployTreeOpts> for SysrootDeployTreeOpts<'b> {
type Storage = (
Box<OstreeSysrootDeployTreeOpts>,
OptionStrSliceStorage<'a>,
OptionStrSliceStorage<'a>,
);
fn to_glib_none(&'a self) -> Stash<*const OstreeSysrootDeployTreeOpts, Self> {
let mut options = Box::new(unsafe { std::mem::zeroed::<OstreeSysrootDeployTreeOpts>() });
let override_kernel_argv = self.override_kernel_argv.to_glib_none();
let overlay_initrds = self.overlay_initrds.to_glib_none();
options.override_kernel_argv = override_kernel_argv.0;
options.overlay_initrds = overlay_initrds.0;
Stash(
options.as_ref(),
(options, override_kernel_argv.1, overlay_initrds.1),
)
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::{ffi::CStr, ptr::null_mut};
unsafe fn ptr_array_to_slice<'a, T>(ptr: *mut *mut T) -> &'a [*mut T] {
let mut len = 0;
while !(*ptr.offset(len)).is_null() {
len += 1;
}
std::slice::from_raw_parts(ptr, len as usize)
}
unsafe fn str_ptr_array_to_vec<'a>(ptr: *mut *mut c_char) -> Vec<&'a str> {
ptr_array_to_slice(ptr)
.iter()
.map(|x| CStr::from_ptr(*x).to_str().unwrap())
.collect()
}
#[test]
fn should_convert_default_options() {
let options = SysrootDeployTreeOpts::default();
let stash = options.to_glib_none();
let ptr = stash.0;
unsafe {
assert_eq!((*ptr).override_kernel_argv, null_mut());
assert_eq!((*ptr).overlay_initrds, null_mut());
}
}
#[test]
fn should_convert_non_default_options() {
let override_kernel_argv = vec!["quiet", "splash", "ro"];
let overlay_initrds = vec!["overlay1", "overlay2"];
let options = SysrootDeployTreeOpts {
override_kernel_argv: Some(&override_kernel_argv),
overlay_initrds: Some(&overlay_initrds),
};
let stash = options.to_glib_none();
let ptr = stash.0;
unsafe {
assert_eq!(
str_ptr_array_to_vec((*ptr).override_kernel_argv),
vec!["quiet", "splash", "ro"]
);
assert_eq!(
str_ptr_array_to_vec((*ptr).overlay_initrds),
vec!["overlay1", "overlay2"]
);
}
}
}