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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode:nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Quotes.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/intl/Locale.h"
#include "nsTHashMap.h"
#include "nsPrintfCString.h"
using namespace mozilla;
using namespace mozilla::intl;
namespace {
struct LangQuotesRec {
const char* mLangs;
Quotes mQuotes;
};
#include "cldr-quotes.inc"
static StaticAutoPtr<nsTHashMap<nsCStringHashKey, Quotes>> sQuotesForLang;
} // anonymous namespace
namespace mozilla {
namespace intl {
const Quotes* QuotesForLang(const nsAtom* aLang) {
MOZ_ASSERT(NS_IsMainThread());
// On first use, initialize the hashtable from our CLDR-derived data array.
if (!sQuotesForLang) {
sQuotesForLang = new nsTHashMap<nsCStringHashKey, Quotes>(32);
ClearOnShutdown(&sQuotesForLang);
for (const auto& i : sLangQuotes) {
const char* s = i.mLangs;
size_t len;
while ((len = strlen(s))) {
sQuotesForLang->InsertOrUpdate(nsDependentCString(s, len), i.mQuotes);
s += len + 1;
}
}
}
nsAtomCString langStr(aLang);
const Quotes* entry = sQuotesForLang->Lookup(langStr).DataPtrOrNull();
if (entry) {
// Found an exact match for the requested lang.
return entry;
}
// Try parsing lang as a Locale, then see if we can match it with region or
// script subtags, if present, or just the primary language tag.
// Note that the locale code (if well-formed) will have been canonicalized by
// the attribute-mapping code, so we can rely on the expected casing for each
// type of subtag.
Locale loc;
auto result = LocaleParser::TryParse(langStr, loc);
if (result.isErr()) {
return nullptr;
}
// Extract the primary language tag.
const Span<const char> langAsSpan = loc.Language().Span();
nsAutoCString lang(langAsSpan.data(), langAsSpan.size());
const auto langLen = lang.Length();
// See if we can match language + region.
if (loc.Region().Present()) {
lang.Append('-');
lang.Append(loc.Region().Span());
if ((entry = sQuotesForLang->Lookup(lang).DataPtrOrNull())) {
return entry;
}
lang.Truncate(langLen);
}
// See if we can match language + script.
if (loc.Script().Present()) {
lang.Append('-');
lang.Append(loc.Script().Span());
if ((entry = sQuotesForLang->Lookup(lang).DataPtrOrNull())) {
return entry;
}
lang.Truncate(langLen);
}
// OK, just try the primary language tag alone.
if ((entry = sQuotesForLang->Lookup(lang).DataPtrOrNull())) {
return entry;
}
return nullptr;
}
} // namespace intl
} // namespace mozilla
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