Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89 Commit: 93712b24bf Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256 Reviewed-by: https://github.com/sideshowbarker
2025-08-07 00:29:15 +00:00 · 2024-11-09 12:25:08 -05:00 · 2024-11-09 12:25:08 -05:00 · 93712b24bf · 2024-11-10 11:51:52 +00:00
commit 93712b24bf
parent 950e819ee7
4547 changed files with 104 additions and 113 deletions
--- a/Libraries/LibUnicode/IDNA.cpp
+++ b/Libraries/LibUnicode/IDNA.cpp
@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2023, Simon Wanner <simon@skyrising.xyz>
+ * Copyright (c) 2024, Tim Flynn <trflynn89@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibUnicode/ICU.h>
+#include <LibUnicode/IDNA.h>
+
+#include <unicode/idna.h>
+
+namespace Unicode::IDNA {
+
+// https://www.unicode.org/reports/tr46/#ToASCII
+ErrorOr<String> to_ascii(Utf8View domain_name, ToAsciiOptions const& options)
+{
+    u32 icu_options = UIDNA_DEFAULT;
+
+    if (options.check_bidi == CheckBidi::Yes)
+        icu_options |= UIDNA_CHECK_BIDI;
+    if (options.check_joiners == CheckJoiners::Yes)
+        icu_options |= UIDNA_CHECK_CONTEXTJ;
+    if (options.use_std3_ascii_rules == UseStd3AsciiRules::Yes)
+        icu_options |= UIDNA_USE_STD3_RULES;
+    if (options.transitional_processing == TransitionalProcessing::No)
+        icu_options |= UIDNA_NONTRANSITIONAL_TO_ASCII | UIDNA_NONTRANSITIONAL_TO_UNICODE;
+
+    UErrorCode status = U_ZERO_ERROR;
+
+    auto idna = adopt_own_if_nonnull(icu::IDNA::createUTS46Instance(icu_options, status));
+    if (icu_failure(status))
+        return Error::from_string_literal("Unable to create an IDNA instance");
+
+    StringBuilder builder { domain_name.as_string().length() };
+    icu::StringByteSink sink { &builder };
+
+    icu::IDNAInfo info;
+    idna->nameToASCII_UTF8(icu_string_piece(domain_name.as_string()), sink, info, status);
+
+    auto errors = info.getErrors();
+
+    if (options.check_hyphens == CheckHyphens::No) {
+        errors &= ~UIDNA_ERROR_HYPHEN_3_4;
+        errors &= ~UIDNA_ERROR_LEADING_HYPHEN;
+        errors &= ~UIDNA_ERROR_TRAILING_HYPHEN;
+    }
+    if (options.verify_dns_length == VerifyDnsLength::No) {
+        errors &= ~UIDNA_ERROR_EMPTY_LABEL;
+        errors &= ~UIDNA_ERROR_LABEL_TOO_LONG;
+        errors &= ~UIDNA_ERROR_DOMAIN_NAME_TOO_LONG;
+    }
+
+    if (icu_failure(status) || errors != 0)
+        return Error::from_string_literal("Unable to convert domain to ASCII");
+
+    return builder.to_string();
+}
+
+}