provide set and get app language interfaces

Signed-off-by: sunyaozu <sunyaozu@huawei.com>

bundle.json

@@ -61,6 +61,7 @@
                 "init",
                 "ipc",
                 "napi",
+                "preferences",
                 "resource_management",
                 "samgr"
             ],

frameworks/intl/BUILD.gn

@@ -48,11 +48,13 @@ ohos_shared_library("preferred_language") {
       "//foundation/systemabilitymgr/samgr/interfaces/innerkits/samgr_proxy/include/",
     ]
     external_deps += [
+      "ability_runtime:app_context",
       "bundle_framework:appexecfwk_base",
       "bundle_framework:appexecfwk_core",
       "c_utils:utils",
       "hilog:libhilog",
       "ipc:ipc_core",
+      "preferences:native_preferences",
       "resource_management:global_resmgr",
       "samgr:samgr_proxy",
     ]

frameworks/intl/src/preferred_language.cpp

@@ -14,6 +14,7 @@
  */
 #ifdef SUPPORT_APP_PREFERRED_LANGUAGE
 #include <regex>
+#include "application_context.h"
 #include "bundle_info.h"
 #include "bundle_mgr_interface.h"
 #include "hap_resource.h"
@@ -36,6 +37,8 @@ const char *PreferredLanguage::RESOURCE_PATH_HEAD = "/data/accounts/account_0/ap
 const char *PreferredLanguage::RESOURCE_PATH_TAILOR = "/assets/entry/resources.index";
 const char *PreferredLanguage::RESOURCE_PATH_SPLITOR = "/";
 const char *PreferredLanguage::PREFERRED_LANGUAGES = "persist.sys.preferredLanguages";
+const char *PreferredLanguage::APP_LANGUAGE_KEY = "app_language";
+const char *PreferredLanguage::I18N_PREFERENCES_FILE_NAME = "/i18n";
 
 bool PreferredLanguage::AddPreferredLanguageExist(std::vector<std::string> &preferredLanguageList, int languageIdx,
     int index, const std::string& language)
@@ -200,108 +203,57 @@ std::string PreferredLanguage::GetFirstPreferredLanguage()
 }
 
 #ifdef SUPPORT_APP_PREFERRED_LANGUAGE
-std::string PreferredLanguage::GetBundleName()
+std::shared_ptr<NativePreferences::Preferences> PreferredLanguage::GetI18nAppPreferences()
 {
-    auto systemAbilityManager = OHOS::SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
+    std::shared_ptr<AbilityRuntime::ApplicationContext> appContext = AbilityRuntime::ApplicationContext::GetInstance();
-    if (systemAbilityManager == nullptr) {
+    std::string preferencesDirPath = appContext->GetPreferencesDir();
-        HiLog::Error(LABEL, "Failed to create system ability manager.");
+    std::string i18nPreferencesFilePath = preferencesDirPath + I18N_PREFERENCES_FILE_NAME;
-        return "";
+    int status;
+    NativePreferences::Options options(i18nPreferencesFilePath);
+    std::shared_ptr<NativePreferences::Preferences> preferences =
+        NativePreferences::PreferencesHelper::GetPreferences(options, status);
+    if (status != 0) {
+        HiLog::Error(LABEL, "PreferredLanguage::GetAppPreferredLanguage get i18n app preferences failed.");
+        return nullptr;
     }
-    auto bundleMgrSa = systemAbilityManager->GetSystemAbility(OHOS::BUNDLE_MGR_SERVICE_SYS_ABILITY_ID);
+    return preferences;
-    if (bundleMgrSa == nullptr) {
-        HiLog::Error(LABEL, "Failed to create bundle manager SA.");
-        return "";
-    }
-    auto bundleMgr = OHOS::iface_cast<AppExecFwk::IBundleMgr>(bundleMgrSa);
-    if (bundleMgr == nullptr) {
-        HiLog::Error(LABEL, "Failed to create bundle manager.");
-        return "";
-    }
-    AppExecFwk::BundleInfo bundleInfo;
-    bundleMgr->GetBundleInfoForSelf(0, bundleInfo);
-    return bundleInfo.name;
-}
-
-std::set<std::string> PreferredLanguage::GetResources()
-{
-    std::string bundleName = GetBundleName();
-    const std::string resourcePath = RESOURCE_PATH_HEAD + bundleName + RESOURCE_PATH_SPLITOR + bundleName +
-        RESOURCE_PATH_TAILOR;
-    const OHOS::Global::Resource::HapResource *resource =
-        OHOS::Global::Resource::HapResource::LoadFromIndex(resourcePath.c_str(), nullptr);
-    const std::vector<std::string> qualifiers = resource->GetQualifiers();
-    std::set<std::string> result;
-    std::regex languagePattern("type:0.*str:([a-z]{2})");
-    std::regex countryPattern("type:1.*str:([A-Z]{2})");
-    for (size_t i = 0; i < qualifiers.size(); i++) {
-        std::smatch match;
-        bool found = regex_search(qualifiers[i], match, languagePattern);
-        if (!found) {
-            continue;
-        }
-        std::string locale = match.str(1);
-        found = regex_search(qualifiers[i], match, countryPattern);
-        if (found) {
-            locale += "-";
-            locale += match.str(1);
-        }
-        result.insert(locale);
-    }
-    return result;
-}
-
-bool PreferredLanguage::IsMatched(const std::string& preferred, const std::string& resource)
-{
-    LocaleInfo preferredLocaleInfo(preferred);
-    LocaleInfo resourceLocaleInfo(resource);
-    if (preferred == resource) {
-        return true;
-    }
-    if (preferredLocaleInfo.GetLanguage() != resourceLocaleInfo.GetLanguage()) {
-        return false;
-    }
-    LocaleInfo maximizedResourceLocale(resourceLocaleInfo.Maximize());
-    std::string resourceScript = maximizedResourceLocale.GetScript();
-    if (resourceScript == "") {
-        std::string resourceCountry = maximizedResourceLocale.GetRegion();
-        if (resourceCountry == "") {
-            return true;
-        }
-        std::string preferredCountry = preferredLocaleInfo.GetRegion();
-        if (resourceCountry == preferredCountry) {
-            return true;
-        }
-        return false;
-    }
-    LocaleInfo maximizedPreferredLocale(preferredLocaleInfo.Maximize());
-    std::string preferredScript = maximizedResourceLocale.GetScript();
-    if (resourceScript == preferredScript) {
-        return true;
-    }
-    return false;
 }
 
 std::string PreferredLanguage::GetAppPreferredLanguage()
 {
-    std::vector<std::string> preferredLanguageList = GetPreferredLanguageList();
+    std::shared_ptr<NativePreferences::Preferences> preferences = GetI18nAppPreferences();
-    std::set<std::string> resources = GetResources();
+    if (preferences == nullptr) {
-    int minmumMatchedIdx = -1;
+        HiLog::Error(LABEL, 
-    for (size_t i = 0; i < preferredLanguageList.size(); i++) {
+            "PreferredLanguage::GetAppPreferredLanguage get i18n preferences failed, return system language.");
-        for (std::set<std::string>::iterator it = resources.begin(); it != resources.end(); ++it) {
+        return LocaleConfig::GetSystemLanguage();
-            std::string preferredLanguage = preferredLanguageList[i];
-            if (preferredLanguage == "en-Qaag") {
-                preferredLanguage = "en-Latn";
     }
-            if (IsMatched(preferredLanguage, *it)) {
+    std::string res = preferences->GetString(PreferredLanguage::APP_LANGUAGE_KEY, "");
-                minmumMatchedIdx = (int)i;
+    if (res.length() == 0) {
-                break;
+        HiLog::Info(LABEL, 
+            "PreferredLanguage::GetAppPreferredLanguage app language is empty, return system language.");
+        return LocaleConfig::GetSystemLanguage();
     }
+    return res;
 }
+
+void PreferredLanguage::SetAppPreferredLanguage(const std::string &language, I18nErrorCode &errCode)
+{
+    std::shared_ptr<AbilityRuntime::ApplicationContext> appContext = AbilityRuntime::ApplicationContext::GetInstance();
+    appContext->SetLanguage(language);
+    std::shared_ptr<NativePreferences::Preferences> preferences = GetI18nAppPreferences();
+    if (preferences == nullptr) {
+        errCode = I18nErrorCode::FAILED;
+        HiLog::Error(LABEL, "PreferredLanguage::SetAppPreferredLanguage get i18n preferences failed.");
+        return;
     }
-    if (minmumMatchedIdx != -1) {
+    int32_t status = preferences->PutString(PreferredLanguage::APP_LANGUAGE_KEY, language);
-        return preferredLanguageList[minmumMatchedIdx];
+    if (status != 0) {
+        errCode = I18nErrorCode::FAILED;
+        HiLog::Error(LABEL,
+            "PreferredLanguage::SetAppPreferredLanguage set app language to i18n preferences failed.");
+        return;
     }
-    return preferredLanguageList[0];
+    preferences->Flush();
 }
 #endif
 

interfaces/js/kits/BUILD.gn

@@ -11,6 +11,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import("//base/global/i18n/i18n.gni")
 import("//build/ohos.gni")
 
 group("build_module") {
@@ -92,6 +93,9 @@ ohos_shared_library("i18n") {
     "hilog:libhilog",
     "napi:ace_napi",
   ]
+  if (i18n_support_app_preferred_language) {
+    defines = [ "SUPPORT_APP_PREFERRED_LANGUAGE" ]
+  }
   relative_install_dir = "module"
   subsystem_name = "global"
   part_name = "i18n"

interfaces/js/kits/src/i18n_system_addon.cpp

@@ -324,7 +324,13 @@ napi_value I18nSystemAddon::SetAppPreferredLanguage(napi_env env, napi_callback_
         ErrorUtil::NapiThrow(env, I18N_NOT_VALID, true);
         return nullptr;
     }
-    // Do something next
+#ifdef SUPPORT_APP_PREFERRED_LANGUAGE
+    I18nErrorCode errCode = I18nErrorCode::SUCCESS;
+    PreferredLanguage::SetAppPreferredLanguage(localeTag, errCode);
+    if (errCode != I18nErrorCode::SUCCESS) {
+        HiLog::Error(LABEL, "SetAppPreferredLanguage: set app language to i18n app preferences failed.");
+    }
+#endif
     return nullptr;
 }
 

interfaces/native/inner_api/preferred_language/include/preferred_language.h

@@ -19,6 +19,9 @@
 #include <string>
 #include <vector>
 #include "i18n_types.h"
+#ifdef SUPPORT_APP_PREFERRED_LANGUAGE
+#include "preferences_helper.h"
+#endif
 
 namespace OHOS {
 namespace Global {
@@ -30,7 +33,23 @@ public:
     static std::vector<std::string> GetPreferredLanguageList();
     static std::string GetFirstPreferredLanguage();
 #ifdef SUPPORT_APP_PREFERRED_LANGUAGE
+    /**
+     * @brief Get App Language.
+     * Get the app language from app preferences data which saved by SetAppPreferredLanguage method.
+     *
+     * @return std::string return current app language.
+     */
     static std::string GetAppPreferredLanguage();
+
+    /**
+     * @brief Set App Language.
+     * The application interface will be refreshed in real time after call this method. And the language will be saved
+     * to app preferences data which will be used the next time the application starts.
+     *
+     * @param language language to be set.
+     * @param errCode Indicates whether the setting was successful; errCode == I18nErrorCode::SUCCESS means successful.
+     */
+    static void SetAppPreferredLanguage(const std::string &language, I18nErrorCode &errCode);
 #endif
     static std::string GetPreferredLocale();
 
@@ -43,14 +62,14 @@ private:
     static bool IsValidTag(const std::string &tag);
     static void Split(const std::string &src, const std::string &sep, std::vector<std::string> &dest);
 #ifdef SUPPORT_APP_PREFERRED_LANGUAGE
-    static std::string GetBundleName();
+    static std::shared_ptr<NativePreferences::Preferences> GetI18nAppPreferences();
-    static std::set<std::string> GetResources();
-    static bool IsMatched(const std::string& preferred, const std::string& resource);
 #endif
     static const char *RESOURCE_PATH_HEAD;
     static const char *RESOURCE_PATH_TAILOR;
     static const char *RESOURCE_PATH_SPLITOR;
     static const char *PREFERRED_LANGUAGES;
+    static const char *APP_LANGUAGE_KEY;
+    static const char *I18N_PREFERENCES_FILE_NAME;
     static constexpr int CONFIG_LEN = 128;
     static constexpr uint32_t LANGUAGE_LEN = 2;
 };