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dirty fix for when mainBuffer and emojiBuffer mismatch just so we don't crash.

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This commit is contained in:
fiatjaf
2024-01-12 10:44:37 -03:00
parent d7bab9b31a
commit 8c5fa1aba8
1 changed files with 13 additions and 2 deletions
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15
image_utils.go
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@@ -361,7 +361,6 @@ func lookupScript(r rune) int {
// shortenURLs takes a text content and returns the same content, but with all big URLs like https://image.nostr.build/0993112ab590e04b978ad32002005d42c289d43ea70d03dafe9ee99883fb7755.jpg#m=image%2Fjpeg&dim=1361x1148&blurhash=%3B7Jjhw00.l.QEh%3FuIA-pMe00%7EVjXX8x%5DE2xuSgtQcr%5E%2500%3FHxD%24%25%25Ms%2Bt%2B-%3BVZK59a%252MyD%2BV%5BI.8%7Ds%3B%25Lso-oi%5ENINHnjI%3BR*%3DdM%7BX7%25MIUtksn%24LM%7BMySeR%25R*%251M%7DRkv%23RjtjS%239as%3AxDnO%251&x=61be75a3e3e0cc88e7f0e625725d66923fdd777b3b691a1c7072ba494aef188d shortened to something like https://image.nostr.build/.../...7755.jpg
func shortenURLs(text string, skipImages bool) string {
return urlMatcher.ReplaceAllStringFunc(text, func(match string) string {
if skipImages && isMediaURL(match) {
return match // Skip media URLs
}
@@ -468,6 +467,7 @@ func shapeText(rawText []rune, fontSize int) (shaping.Output, []bool, []hlstate)
// remove from mainBuffer characters that are not present in emojiBuffer
newMainBufferInfo := make([]harfbuzz.GlyphInfo, len(emojiBuffer.Info))
newMainBufferPos := make([]harfbuzz.GlyphPosition, len(emojiBuffer.Info))
outer:
for e, m := 0, 0; e < len(emojiBuffer.Info); {
ec := emojiBuffer.Info[e].Codepoint
if ec == mainBuffer.Info[m].Codepoint {
@@ -482,7 +482,18 @@ func shapeText(rawText []rune, fontSize int) (shaping.Output, []bool, []hlstate)
m++
} else {
m++
for ; emojiBuffer.Info[e].Codepoint != mainBuffer.Info[m].Codepoint; m++ {
for ; ec != mainBuffer.Info[m].Codepoint; m++ {
// we increase m until mainBuffer catches up with emojiBuffer
// if we reach the end of mainBuffer and that never happens, then that means it was actually
// emojiBuffer that had to catch up with mainBuffer -- but we don't handle this for now
// we just break out of the outer loop and render whatever we had ignoring emojis
if len(mainBuffer.Info) < m {
newMainBufferInfo = mainBuffer.Info
newMainBufferPos = mainBuffer.Pos
emojiMask = make([]bool, len(emojiBuffer.Info))
log.Debug().Interface("raw", rawText).Msg("unexpected mismatch between main and emoji buffers")
break outer
}
}
}
}