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27 lines
693 B
Rust
27 lines
693 B
Rust
use byteorder::{BigEndian, ByteOrder};
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use std::mem::forget;
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pub fn forget_rust(buf: Vec<u8>) -> *const u8 {
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let ptr = buf.as_ptr();
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forget(buf);
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ptr
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}
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#[allow(unused_attributes)]
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#[allow(dead_code)]
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pub fn reclaim_rust(ptr: *mut u8, length: u32) {
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unsafe {
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let len: usize = length as usize;
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Vec::from_raw_parts(ptr, len, len);
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}
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}
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pub fn extend_front_four_bytes_into_bytes(bytes: &[u8]) -> Vec<u8> {
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let mut output = Vec::with_capacity(bytes.len() + 4);
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let mut marker_bytes = [0; 4];
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BigEndian::write_u32(&mut marker_bytes, bytes.len() as u32);
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output.extend_from_slice(&marker_bytes);
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output.extend_from_slice(bytes);
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output
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}
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