# cj_common
Collection of common functions used for other projects. Additional functionality added as more projects are spun
up.
Current features relate to:
Base64 encoding/decoding
Hex encoding/decoding
Bit manipulation
In-set checking (values within a set of ranges)
cj_binary
---
- b64 - structs, methods and traits for working with b64 encoding/decoding
```rust
fn main() {
let mut s2 = String::new();
for c in "Many hands make light work.".iter_to_b64() {
s2.push(c);
}
assert_eq!(s2.as_str(), "TWFueSBoYW5kcyBtYWtlIGxpZ2h0IHdvcmsu");
}
```
```rust
fn main() {
let mut v = Vec::new();
for b in "TWFueSBoYW5kcyBtYWtlIGxpZ2h0IHdvcmsu".iter_b64_to_byte() {
v.push(b);
}
assert!(v.len() > 0);
let r = String::from_utf8_lossy(v.as_slice());
let s = "Many hands make light work.";
assert_eq!(r.to_string().as_str(), s);
}
```
- hex - structs, methods and traits for working with hex encoding/decoding
```rust
fn main() {
let x = 0x1F2i64;
let s = x.to_hex_be();
let y: Option<i64> = i64::from_hex_be(s.as_str());
assert!(y.is_some());
assert_eq!(x, y.unwrap());
let x = 0x1F2i64;
let s = x.to_hex_le();
let y: Option<i64> = i64::from_hex_le(s.as_str());
assert!(y.is_some());
assert_eq!(x, y.unwrap());
}
```
```rust
fn main() {
let mut s = String::new();
for c in "Many hands make light work.".iter_to_hex() {
s.push_str(c);
}
assert_eq!(
s.as_str(),
"4D616E792068616E6473206D616B65206C6967687420776F726B2E"
);
let mut v = Vec::new();
for b in s.as_str().iter_hex_to_byte() {
v.push(b);
}
let s2 = String::from_utf8_lossy(v.as_slice()).to_string();
assert_eq!(s2.as_str(), "Many hands make light work.");
}
```
- bitbuf - structs, methods and traits for getting/setting bits at given positions of the implemented types
```rust
fn main() {
let x = 0b00000010u8;
assert_eq!(x.get_bit(1), true);
}
```
```rust
fn main() {
let mut x = 0b00000000u8;
x.set_bit(1, true);
assert_eq!(x, 0b00000010u8);
}
```
```rust
fn main() {
let mut x = 0xABu8;
let mut v = Vec::new();
for i in x.bit_iter() {
v.push(i);
}
assert_eq!(
v.as_slice(),
&[true, true, false, true, false, true, false, true]
);
}
```
cj_helpers
---
- in_set - structs, methods and traits for checking if values are within a given set of ranges.
```rust
fn main() {
assert_eq!('x'.in_range('a'..'z'), true);
assert_eq!('z'.in_range_inclusive('a'..='z'), true);
assert_eq!(1.in_range(1..3), true);
assert_eq!(
'z'.in_set([('a'..'r').into(), ('r'..='z').into()].as_slice()),
true
);
let list = "lmnop";
for c in list.chars() {
assert_eq!(c.in_range('k'..'q'), true);
assert_eq!(c.in_set([('k'..'q').into()].as_slice()), true);
assert_eq!(
c.in_set(
[
('k'..='l').into(), // RangeInclusive
('m'..'n').into(), // Range
('n'..='p').into(), // RangeInclusive
['a', 'b', 'c'].as_slice().into(), // Slice
"test123".into(), // str
]
.as_slice()
),
true
);
assert_eq!(c.in_range('w'..'z'), false);
}
let alpha_nums = [('a'..='z').into(), ('A'..='Z').into(), ('0'..='9').into()];
let list = "lmnop";
for c in list.chars() {
assert_eq!(c.in_set(alpha_nums.as_slice()), true);
}
let list = [1_000, 10_000, 100_000_000];
for n in list {
assert_eq!(n.in_range(1..200_000_000), true);
assert_eq!(n.in_set([(1..200_000_000).into()].as_slice()), true);
assert_eq!(
n.in_set(
[
(1..=10).into(), // RangeInclusive
(500..2_000).into(), // Range
(9_999..=100_000_000).into(), // RangeInclusive
[30, 90, 700].as_slice().into() // Slice
]
.as_slice()
),
true
);
assert_eq!(n.in_range(1_000_000_000..1_000_000_001), false);
}
assert_eq!('9'.is_ascii_numeric(), true);
assert_eq!('T'.is_ascii_numeric(), false);
assert_eq!('9'.is_ascii_alpha(), false);
assert_eq!('T'.is_ascii_alpha(), true);
for c in "9T".chars() {
assert_eq!(c.is_ascii_alpha_numeric(), true);
}
}
```