gotosocial/vendor/github.com/rivo/uniseg/width.go
Vyr Cossont 5b765d734e
[feature] Push notifications (#3587)
* Update push subscription API model to be Mastodon 4.0 compatible

* Add webpush-go dependency

# Conflicts:
#	go.sum

* Single-row table for storing instance's VAPID key pair

* Generate VAPID key pair during startup

* Add VAPID public key to instance info API

* Return VAPID public key when registering an app

* Store Web Push subscriptions in DB

* Add Web Push sender (similar to email sender)

* Add no-op push senders to most processor tests

* Test Web Push notifications from workers

* Delete Web Push subscriptions when account is deleted

* Implement push subscription API

* Linter fixes

* Update Swagger

* Fix enum to int migration

* Fix GetVAPIDKeyPair

* Create web push subscriptions table with indexes

* Log Web Push server error messages

* Send instance URL as Web Push JWT subject

* Accept any 2xx code as a success

* Fix malformed VAPID sub claim

* Use packed notification flags

* Remove unused date columns

* Add notification type for update notifications

Not used yet

* Make GetVAPIDKeyPair idempotent

and remove PutVAPIDKeyPair

* Post-rebase fixes

* go mod tidy

* Special-case 400 errors other than 408/429

Most client errors should remove the subscription.

* Improve titles, trim body to reasonable length

* Disallow cleartext HTTP for Web Push servers

* Fix lint

* Remove redundant index on unique column

Also removes redundant unique and notnull tags on ID column since these are implied by pk

* Make realsender.go more readable

* Use Tobi's style for wrapping errors

* Restore treating all 5xx codes as temporary problems

* Always load target account settings

* Stub `policy` and `standard`

* webpush.Sender: take type converter as ctor param

* Move webpush.MockSender and noopSender into testrig
2025-01-23 16:47:30 -08:00

62 lines
1.6 KiB
Go

package uniseg
// EastAsianAmbiguousWidth specifies the monospace width for East Asian
// characters classified as Ambiguous. The default is 1 but some rare fonts
// render them with a width of 2.
var EastAsianAmbiguousWidth = 1
// runeWidth returns the monospace width for the given rune. The provided
// grapheme property is a value mapped by the [graphemeCodePoints] table.
//
// Every rune has a width of 1, except for runes with the following properties
// (evaluated in this order):
//
// - Control, CR, LF, Extend, ZWJ: Width of 0
// - \u2e3a, TWO-EM DASH: Width of 3
// - \u2e3b, THREE-EM DASH: Width of 4
// - East-Asian width Fullwidth and Wide: Width of 2 (Ambiguous and Neutral
// have a width of 1)
// - Regional Indicator: Width of 2
// - Extended Pictographic: Width of 2, unless Emoji Presentation is "No".
func runeWidth(r rune, graphemeProperty int) int {
switch graphemeProperty {
case prControl, prCR, prLF, prExtend, prZWJ:
return 0
case prRegionalIndicator:
return 2
case prExtendedPictographic:
if property(emojiPresentation, r) == prEmojiPresentation {
return 2
}
return 1
}
switch r {
case 0x2e3a:
return 3
case 0x2e3b:
return 4
}
switch propertyEastAsianWidth(r) {
case prW, prF:
return 2
case prA:
return EastAsianAmbiguousWidth
}
return 1
}
// StringWidth returns the monospace width for the given string, that is, the
// number of same-size cells to be occupied by the string.
func StringWidth(s string) (width int) {
state := -1
for len(s) > 0 {
var w int
_, s, w, state = FirstGraphemeClusterInString(s, state)
width += w
}
return
}