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truncation fix

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This commit is contained in:
Doug Hoyte
2024-12-19 22:15:37 -05:00
parent e0f0b9d1bf
commit 6fd25d4ad4
1 changed files with 7 additions and 13 deletions
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12
src/apps/web/WebUtils.h
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@ -117,22 +117,16 @@ inline void abbrevText(std::string &origStr, size_t maxLen) {
std::string str = origStr.substr(0, maxLen-3);
{
// If string ends in a multi-byte UTF-8 encoded code-point, chop it off.
// This avoids cutting in the middle of an encoded code-point. It's a 99%
// solution, not perfect. See: https://metacpan.org/pod/Unicode::Truncate
auto endsInUtf8Extension = [&](){
return str.size() && (str.back() & 0b1100'0000) == 0b1000'0000;
};
if (endsInUtf8Extension()) {
do str.pop_back(); while (endsInUtf8Extension());
if (str.size() && (str.back() & 0b1000'0000)) {
while (str.size() && (str.back() & 0b1100'0000) == 0b1000'0000) str.pop_back();
if (str.size()) str.pop_back();
}
}
str += "...";
str += "…";
std::swap(origStr, str);
}