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use libc;
use ArchiveRef;
use std::ffi::CString;
use std::slice;
use std::path::Path;
pub struct ArchiveRO {
ptr: ArchiveRef,
}
impl ArchiveRO {
pub fn open(dst: &Path) -> Option<ArchiveRO> {
return unsafe {
let s = path2cstr(dst);
let ar = ::LLVMRustOpenArchive(s.as_ptr());
if ar.is_null() {
None
} else {
Some(ArchiveRO { ptr: ar })
}
};
#[cfg(unix)]
fn path2cstr(p: &Path) -> CString {
use std::os::unix::prelude::*;
use std::ffi::OsStr;
let p: &OsStr = p.as_ref();
CString::new(p.as_bytes()).unwrap()
}
#[cfg(windows)]
fn path2cstr(p: &Path) -> CString {
CString::new(p.to_str().unwrap()).unwrap()
}
}
pub fn read<'a>(&'a self, file: &str) -> Option<&'a [u8]> {
unsafe {
let mut size = 0 as libc::size_t;
let file = CString::new(file).unwrap();
let ptr = ::LLVMRustArchiveReadSection(self.ptr, file.as_ptr(),
&mut size);
if ptr.is_null() {
None
} else {
Some(slice::from_raw_parts(ptr as *const u8, size as usize))
}
}
}
}
impl Drop for ArchiveRO {
fn drop(&mut self) {
unsafe {
::LLVMRustDestroyArchive(self.ptr);
}
}
}