wsd is an intuitive crate delivers What Simply Defined.

Intutive File Class

Just a convenient wrapper to rust File, check the return value quickly as we did with C API, don't need to check the Result, and unwrap() etc.

Methods

rust File::new() File::open() File::read() File::write() File::seek() File::length() File::close() File::error()

Open flags

rust O_CREATE O_TRUNCATE O_RW O_READ O_WRITE O_APPEND

Seek flags

rust SEEK_SET SEEK_CUR SEEK_END

Example

```rust using wsd::fs::*;

fn test() -> i32 { let mut f = File::new(); if f.open("test.txt", OCREATE | ORW) != 0 { // check the error println!("Error: {}", f.error()); return -1; }

let data = "Hello World!";
let n = f.write(data);
if n < 0 {
    // write error
}

f.rewind();
let mut buf = [0; 4096];
let n = f.read(&mut buf);
if n > 0 {
    // success to read n bytes
}

// get file length
let off = f.length();
if off > 0 {

}

f.seek(256, SEEK_SET);
f.write("more data");

f.close();

return 0;

}

```