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feat: add RTL support in epub and txt readers (#1700)

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Co-authored-by: Zach Nelson <zach@zdnelson.com>
This commit is contained in:
Uri Tauber
2026-05-29 03:25:17 -04:00
committed by GitHub
co-authored by Zach Nelson
parent cc2079a578
commit f5bc554ae7
27 changed files with 1621 additions and 119 deletions
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lib/Utf8/Utf8.cpp
+18
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@@ -56,6 +56,24 @@ uint32_t utf8NextCodepoint(const unsigned char** string) {
return cp;
}
void utf8AppendCodepoint(uint32_t cp, std::string& out) {
if (cp < 0x80) {
out += static_cast<char>(cp);
} else if (cp < 0x800) {
out += static_cast<char>(0xC0 | (cp >> 6));
out += static_cast<char>(0x80 | (cp & 0x3F));
} else if (cp < 0x10000) {
out += static_cast<char>(0xE0 | (cp >> 12));
out += static_cast<char>(0x80 | ((cp >> 6) & 0x3F));
out += static_cast<char>(0x80 | (cp & 0x3F));
} else {
out += static_cast<char>(0xF0 | (cp >> 18));
out += static_cast<char>(0x80 | ((cp >> 12) & 0x3F));
out += static_cast<char>(0x80 | ((cp >> 6) & 0x3F));
out += static_cast<char>(0x80 | (cp & 0x3F));
}
}
int utf8SafeTruncateBuffer(const char* buf, int len) {
if (len <= 0) return 0;