Adam Van Ymeren
7a04f298d2
- update to latest telegram layer - remove some references to fields in tg.Entities that don't exist in the schema - originally added here: https://github.com/beeper/td/commit/820929062a2ba0104397bc01235ab58a9cff780e - referenced here - https://github.com/mautrix/telegramgo/commit/124f0967ed195b5a380c9bd02e170ada9710dde3 - https://github.com/mautrix/telegramgo/commit/4205047aab2e0639217148b5d125bfaab668bd8e
31 lines
735 B
Go
31 lines
735 B
Go
// Package hasher contains Telegram pagination hash implementation.
|
|
package hasher
|
|
|
|
// Hasher implements Telegram pagination hash counting.
|
|
//
|
|
// See https://core.telegram.org/api/offsets#hash-generation.
|
|
type Hasher struct {
|
|
state uint32
|
|
}
|
|
|
|
// Reset resets the Hasher to its initial state.
|
|
func (h *Hasher) Reset() {
|
|
h.state = 0
|
|
}
|
|
|
|
// Update performs state change using given value.
|
|
func (h *Hasher) Update(value uint32) {
|
|
h.state = (h.state * 20261) + value
|
|
}
|
|
|
|
// Update64 performs state change using given 64-bit value.
|
|
func (h *Hasher) Update64(value uint64) {
|
|
h.Update(uint32(value >> 32))
|
|
h.Update(uint32(value & 0xFFFFFFFF))
|
|
}
|
|
|
|
// Sum returns final sum.
|
|
func (h *Hasher) Sum() int64 {
|
|
return int64(h.state & 0x7FFFFFFF)
|
|
}
|