2020-05-05 02:49:29 +09:00
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// Copyright (c) 2020 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "shell/common/language_util.h"
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2022-11-09 07:50:43 -08:00
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#include <glib.h>
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#include "base/check.h"
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#include "base/i18n/rtl.h"
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2020-05-05 02:49:29 +09:00
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namespace electron {
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std::vector<std::string> GetPreferredLanguages() {
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2022-11-09 07:50:43 -08:00
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std::vector<std::string> preferredLanguages;
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// Based on
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// https://source.chromium.org/chromium/chromium/src/+/refs/tags/108.0.5329.0:ui/base/l10n/l10n_util.cc;l=543-554
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// GLib implements correct environment variable parsing with
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// the precedence order: LANGUAGE, LC_ALL, LC_MESSAGES and LANG.
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const char* const* languages = g_get_language_names();
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DCHECK(languages); // A valid pointer is guaranteed.
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DCHECK(*languages); // At least one entry, "C", is guaranteed.
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2024-10-21 18:20:00 -05:00
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// SAFETY: |g_get_language_names()| returns a glib-owned array
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// of const C strings, terminated by an empty string.
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// This loop is the correct way to walk through its return values.
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2025-04-22 15:53:29 -04:00
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static constexpr std::string_view CLangName = "C";
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2024-10-21 18:20:00 -05:00
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for (; *languages; UNSAFE_BUFFERS(++languages)) {
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2025-04-22 15:53:29 -04:00
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if (CLangName != *languages)
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2022-11-09 07:50:43 -08:00
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preferredLanguages.push_back(base::i18n::GetCanonicalLocale(*languages));
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}
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return preferredLanguages;
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2020-05-05 02:49:29 +09:00
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}
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} // namespace electron
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