forked from organicmaps/organicmaps
[platform] Cache system languages.
Signed-off-by: Viktor Govako <viktor.govako@gmail.com>
This commit is contained in:
Viktor Govako
parent
0d6cfcbfe1
commit
36e006ec63
1 changed files with 82 additions and 76 deletions
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@ -1,14 +1,13 @@
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#include "platform/preferred_languages.hpp"
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#include "base/buffer_vector.hpp"
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#include "base/string_utils.hpp"
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#include "base/macros.hpp"
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#include "std/target_os.hpp"
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#include <cstdlib> // getenv
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#include <cstring> // strlen
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#include <string>
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#include <vector>
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#if defined(OMIM_OS_MAC) || defined(OMIM_OS_IPHONE)
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#include <CoreFoundation/CFLocale.h>
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@ -39,113 +38,120 @@ static const MSLocale gLocales[] = {{0x1,"ar"},{0x2,"bg"},{0x3,"ca"},{0x4,"zh-Ha
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namespace languages
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{
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void GetSystemPreferred(std::vector<std::string> & languages)
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struct SystemLanguages
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{
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/// @DebugNote
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// Hardcode draw text language.
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//languages.push_back("hi");
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//return;
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buffer_vector<std::string, 4> m_langs;
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SystemLanguages()
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{
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/// @DebugNote
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// Hardcode draw text language.
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//m_langs.push_back("hi");
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//return;
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#if defined(OMIM_OS_MAC) || defined(OMIM_OS_IPHONE) || defined(OMIM_OS_LINUX)
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// check environment variables
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char const * p = std::getenv("LANGUAGE");
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if (p && strlen(p)) // LANGUAGE can contain several values divided by ':'
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languages = strings::Tokenize<std::string>(p, ":");
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else if ((p = getenv("LC_ALL")))
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languages.push_back(p);
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else if ((p = getenv("LC_MESSAGES")))
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languages.push_back(p);
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else if ((p = getenv("LANG")))
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languages.push_back(p);
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// check environment variables
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char const * p = std::getenv("LANGUAGE");
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if (p && strlen(p)) // LANGUAGE can contain several values divided by ':'
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strings::Tokenize(p, ":", [this](std::string_view s) { m_langs.push_back(std::string(s)); });
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else if ((p = getenv("LC_ALL")))
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m_langs.push_back(p);
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else if ((p = getenv("LC_MESSAGES")))
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m_langs.push_back(p);
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else if ((p = getenv("LANG")))
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m_langs.push_back(p);
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#if defined(OMIM_OS_MAC) || defined(OMIM_OS_IPHONE)
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else
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{
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// Mac and iOS implementation
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CFArrayRef langs = CFLocaleCopyPreferredLanguages();
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char buf[30];
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for (CFIndex i = 0; i < CFArrayGetCount(langs); ++i)
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#if defined(OMIM_OS_MAC) || defined(OMIM_OS_IPHONE)
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else
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{
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CFStringRef strRef = (CFStringRef)CFArrayGetValueAtIndex(langs, i);
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CFStringGetCString(strRef, buf, 30, kCFStringEncodingUTF8);
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languages.push_back(buf);
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// Mac and iOS implementation
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CFArrayRef langs = CFLocaleCopyPreferredLanguages();
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char buf[30];
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for (CFIndex i = 0; i < CFArrayGetCount(langs); ++i)
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{
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CFStringRef strRef = (CFStringRef)CFArrayGetValueAtIndex(langs, i);
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CFStringGetCString(strRef, buf, 30, kCFStringEncodingUTF8);
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m_langs.push_back(buf);
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}
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CFRelease(langs);
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}
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CFRelease(langs);
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}
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#endif
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#endif
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#elif defined(OMIM_OS_WINDOWS)
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// if we're on Vista or above, take list of preferred languages
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typedef BOOL (WINAPI *PGETUSERPREFERREDUILANGUAGES)(DWORD, PULONG, PWCHAR, PULONG);
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PGETUSERPREFERREDUILANGUAGES p =
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reinterpret_cast<PGETUSERPREFERREDUILANGUAGES>(
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GetProcAddress(GetModuleHandleA("Kernel32.dll"), "GetUserPreferredUILanguages"));
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if (p)
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{
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// Vista or above, get buffer size first
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ULONG numLangs;
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WCHAR * buf = NULL;
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ULONG bufSize = 0;
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CHECK_EQUAL(TRUE, p(MUI_LANGUAGE_NAME, &numLangs, buf, &bufSize), ());
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CHECK_GREATER(bufSize, 0U, ("GetUserPreferredUILanguages failed"));
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buf = new WCHAR[++bufSize];
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p(MUI_LANGUAGE_NAME, &numLangs, buf, &bufSize);
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size_t len;
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WCHAR * pCurr = buf;
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while ((len = wcslen(pCurr)))
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// if we're on Vista or above, take list of preferred languages
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typedef BOOL (WINAPI *PGETUSERPREFERREDUILANGUAGES)(DWORD, PULONG, PWCHAR, PULONG);
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PGETUSERPREFERREDUILANGUAGES p =
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reinterpret_cast<PGETUSERPREFERREDUILANGUAGES>(
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GetProcAddress(GetModuleHandleA("Kernel32.dll"), "GetUserPreferredUILanguages"));
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if (p)
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{
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char * utf8Buf = new char[len*2];
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CHECK_NOT_EQUAL(WideCharToMultiByte(CP_UTF8, 0, pCurr, -1, utf8Buf, len*2, NULL, NULL), 0, ());
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languages.push_back(utf8Buf);
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delete[] utf8Buf;
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pCurr += len + 1;
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}
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delete[] buf;
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}
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if (languages.empty())
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{
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// used mostly on WinXP
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LANGID langId = GetUserDefaultLangID();
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for (size_t i = 0; i < ARRAY_SIZE(gLocales); ++i)
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if (gLocales[i].m_code == langId)
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// Vista or above, get buffer size first
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ULONG numLangs;
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WCHAR * buf = NULL;
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ULONG bufSize = 0;
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CHECK_EQUAL(TRUE, p(MUI_LANGUAGE_NAME, &numLangs, buf, &bufSize), ());
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CHECK_GREATER(bufSize, 0U, ("GetUserPreferredUILanguages failed"));
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buf = new WCHAR[++bufSize];
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p(MUI_LANGUAGE_NAME, &numLangs, buf, &bufSize);
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size_t len;
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WCHAR * pCurr = buf;
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while ((len = wcslen(pCurr)))
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{
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languages.push_back(gLocales[i].m_name);
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break;
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char * utf8Buf = new char[len*2];
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CHECK_NOT_EQUAL(WideCharToMultiByte(CP_UTF8, 0, pCurr, -1, utf8Buf, len*2, NULL, NULL), 0, ());
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m_langs.push_back(utf8Buf);
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delete[] utf8Buf;
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pCurr += len + 1;
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}
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}
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delete[] buf;
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}
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if (m_langs.empty())
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{
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// used mostly on WinXP
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LANGID langId = GetUserDefaultLangID();
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for (size_t i = 0; i < ARRAY_SIZE(gLocales); ++i)
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if (gLocales[i].m_code == langId)
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{
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m_langs.push_back(gLocales[i].m_name);
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break;
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}
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}
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#elif defined(OMIM_OS_ANDROID)
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languages.push_back(GetAndroidSystemLanguage());
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m_langs.push_back(GetAndroidSystemLanguage());
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#else
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#error "Define language preferences for your platform"
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#error "Define language preferences for your platform"
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#endif
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}
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};
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buffer_vector<std::string, 4> const & GetSystemPreferred()
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{
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static SystemLanguages const langs;
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return langs.m_langs;
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}
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std::string GetPreferred()
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{
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std::vector<std::string> arr;
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GetSystemPreferred(arr);
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// generate output string
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std::string result;
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for (size_t i = 0; i < arr.size(); ++i)
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for (auto const & e : GetSystemPreferred())
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{
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result.append(arr[i]);
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result.append(e);
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result.push_back('|');
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}
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if (result.empty())
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result = "default";
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else
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result.resize(result.size() - 1);
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result.pop_back();
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return result;
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}
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std::string GetCurrentOrig()
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{
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std::vector<std::string> arr;
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GetSystemPreferred(arr);
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auto const & arr = GetSystemPreferred();
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if (arr.empty())
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return "en";
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else
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