8215cfc9fb
This splits the webapp in: * IronCalc (the widget to be published on npmjs) * The frontend for our "service" * Adds "dummy code" for the backend using sqlite
39 lines
995 B
Rust
39 lines
995 B
Rust
use rand::{rngs::StdRng, Rng, SeedableRng};
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const CHARS: [char; 64] = [
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'_', '!', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
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'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',
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'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
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];
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fn random(size: usize) -> Vec<u8> {
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let mut rng = StdRng::from_entropy();
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let mut result: Vec<u8> = vec![0; size];
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rng.fill(&mut result[..]);
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result
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}
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pub fn new_id() -> String {
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let size = 15;
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let mask = CHARS.len() - 1;
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let step: usize = 5;
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let mut id = String::new();
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loop {
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let bytes = random(step);
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for &byte in &bytes {
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let byte = byte as usize & mask;
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id.push(CHARS[byte]);
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if id.len() >= size + 2 {
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return id;
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}
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}
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id.push('-');
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}
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}
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