leveldb-rs-binding 0.8.7

An interface for leveldb
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49

//! Management functions, e.g. for destroying and reparing a database.
use crate::error::Error;
use crate::options::{c_options, Options};
use libc::c_char;
use std::ffi::CString;
use std::path::Path;
use std::ptr;

use crate::sys::leveldb::{leveldb_destroy_db, leveldb_repair_db};

/// destroy a database. You shouldn't hold a handle on the database anywhere at that time.
pub fn destroy(name: &Path, options: Options) -> Result<(), Error> {
    let mut error = ptr::null_mut();
    unsafe {
        let c_string = CString::new(name.to_str().unwrap()).unwrap();
        let c_options = c_options(&options, None);
        leveldb_destroy_db(
            c_options,
            c_string.as_bytes_with_nul().as_ptr() as *const c_char,
            &mut error,
        );

        if error == ptr::null_mut() {
            Ok(())
        } else {
            Err(Error::new_from_char(error))
        }
    }
}

/// repair the database. The database should be closed at this moment.
pub fn repair(name: &Path, options: Options) -> Result<(), Error> {
    let mut error = ptr::null_mut();
    unsafe {
        let c_string = CString::new(name.to_str().unwrap()).unwrap();
        let c_options = c_options(&options, None);
        leveldb_repair_db(
            c_options,
            c_string.as_bytes_with_nul().as_ptr() as *const c_char,
            &mut error,
        );

        if error == ptr::null_mut() {
            Ok(())
        } else {
            Err(Error::new_from_char(error))
        }
    }
}