61 lines
1.1 KiB
V
61 lines
1.1 KiB
V
module rand
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// init initializes the default RNG.
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fn init() {
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default_rng = new_default()
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}
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fn internal_string_from_set(mut rng PRNG, charset string, len int) string {
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result := ''
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#
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#const characters = charset.str;
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#const charactersLength = characters.length;
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#for (let i = 0;i < len.val;i++)
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#result.str += characters.charAt(Math.random() * charactersLength);
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return result
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}
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const (
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ulid_encoding = '0123456789ABCDEFGHJKMNPQRSTVWXYZ'
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)
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fn internal_ulid_at_millisecond(mut rng PRNG, unix_time_milli u64) string {
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mut buf := []u8{cap: 27}
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mut t := unix_time_milli
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mut i := 9
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for i >= 0 {
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buf[i] = rand.ulid_encoding[int(t & 0x1f)]
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t = t >> 5
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i--
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}
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mut x := rng.u64()
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i = 10
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for i < 19 {
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buf[i] = rand.ulid_encoding[int(x & 0x1f)]
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x = x >> 5
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i++
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}
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x = rng.u64()
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for i < 26 {
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buf[i] = rand.ulid_encoding[int(x & 0x1f)]
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x = x >> 5
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i++
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}
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res := ''
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println(buf)
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#res.str = buf.arr.arr.map(String.fromCharCode).join('')
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return res
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}
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fn read_internal(mut rng PRNG, mut buf []u8) {
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for i in 0 .. buf.len {
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buf[i] = rng.u8()
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}
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}
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