libsqlite3_sys_ic/
lib.rs

1#![allow(non_snake_case, non_camel_case_types)]
2#![cfg_attr(test, allow(deref_nullptr))] // https://github.com/rust-lang/rust-bindgen/issues/2066
3
4#[cfg(all(target_arch = "wasm32", target_os = "unknown"))]
5mod wasm32_unknown_unknown;
6
7// force linking to openssl
8#[cfg(feature = "bundled-sqlcipher-vendored-openssl")]
9extern crate openssl_sys;
10
11#[cfg(all(windows, feature = "winsqlite3", target_pointer_width = "32"))]
12compile_error!("The `libsqlite3-sys/winsqlite3` feature is not supported on 32 bit targets.");
13
14pub use self::error::*;
15
16use std::default::Default;
17use std::mem;
18
19mod error;
20
21#[must_use]
22pub fn SQLITE_STATIC() -> sqlite3_destructor_type {
23    None
24}
25
26#[must_use]
27pub fn SQLITE_TRANSIENT() -> sqlite3_destructor_type {
28    Some(unsafe { mem::transmute(-1_isize) })
29}
30
31#[allow(clippy::all)]
32mod bindings {
33    include!(concat!(env!("OUT_DIR"), "/bindgen.rs"));
34}
35pub use bindings::*;
36
37pub type sqlite3_index_constraint = sqlite3_index_info_sqlite3_index_constraint;
38pub type sqlite3_index_constraint_usage = sqlite3_index_info_sqlite3_index_constraint_usage;
39
40impl Default for sqlite3_vtab {
41    fn default() -> Self {
42        unsafe { mem::zeroed() }
43    }
44}
45
46impl Default for sqlite3_vtab_cursor {
47    fn default() -> Self {
48        unsafe { mem::zeroed() }
49    }
50}
51
52pub struct Rand {
53    pub seed: u128,
54    pub a: u128,
55    pub c: u128,
56    pub m: u128,
57}
58
59impl Rand {
60    pub fn new() -> Rand{
61        let now = if cfg!(all(target_arch = "wasm32", target_os = "unknown")) {
62            (ic_cdk::api::time() / 1000000000 ) as u128
63        } else {
64            std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).unwrap().as_secs() as u128
65        };
66        Rand{seed: now, a: 0xBC8F, c: 0xB, m: (1 << 31) - 1}
67    }
68
69    pub fn rand(&mut self) {
70        self.seed = (self.seed * self.a + self.c) & self.m;
71    }
72
73    pub fn next(&mut self, bound: usize) -> usize {
74        self.rand();
75        (self.seed % (bound as u128)) as usize
76    }
77
78    pub fn fill_i8(&mut self, dest: &mut [i8]) {
79        let data = (0..dest.len()).map(|_| {
80            self.rand();
81            (self.seed % 256) as i8
82        }).collect::<Vec<_>>();
83        dest.copy_from_slice(&data);
84    }
85
86    pub fn fill_u8(&mut self, dest: &mut [u8]) {
87        let data = (0..dest.len()).map(|_| {
88            self.rand();
89            (self.seed % 256) as u8
90        }).collect::<Vec<_>>();
91        dest.copy_from_slice(&data);
92    }
93}
libsqlite3_sys_ic/lib.rs

libsqlite3_sys_ic/
lib.rs
