From ed891c60de4169fa8ef4cc19e953e389cc4df60e Mon Sep 17 00:00:00 2001 From: Nat Goodspeed Date: Thu, 17 May 2018 05:33:14 -0400 Subject: SL-821: Add LL_TO_WSTRING() macro to llpreprocessor.h. Also use existing LL_TO_STRING() macro to stringize LL_VIEWER_CHANNEL in llversioninfo.cpp and its tests. --- indra/llcommon/llpreprocessor.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'indra/llcommon/llpreprocessor.h') diff --git a/indra/llcommon/llpreprocessor.h b/indra/llcommon/llpreprocessor.h index 2879038c36..ef015fdce4 100644 --- a/indra/llcommon/llpreprocessor.h +++ b/indra/llcommon/llpreprocessor.h @@ -198,6 +198,8 @@ #define LL_TO_STRING_HELPER(x) #x #define LL_TO_STRING(x) LL_TO_STRING_HELPER(x) +#define LL_TO_WSTRING_HELPER(x) L#x +#define LL_TO_WSTRING(x) LL_TO_WSTRING_HELPER(x) #define LL_FILE_LINENO_MSG(msg) __FILE__ "(" LL_TO_STRING(__LINE__) ") : " msg #define LL_GLUE_IMPL(x, y) x##y #define LL_GLUE_TOKENS(x, y) LL_GLUE_IMPL(x, y) -- cgit v1.2.3 From 9ffcafb64b4483c315d00e88ffc1438bce1f7915 Mon Sep 17 00:00:00 2001 From: Nat Goodspeed Date: Fri, 14 Dec 2018 10:48:43 -0500 Subject: SL-10153: Introduce ll_convert, windows_message() templates. Add ll_convert template, used as (e.g.): ll_convert(value_of_some_other_string_type); There is no generic template implementation -- the template exists solely to provide generic aliases for a bewildering family of llstring.h string- conversion functions with highly-specific names. There's a generic implementation, though, for the degenerate case where FROM and TO are identical. Add ll_convert<> specialization aliases for most of the string-conversion functions declared in llstring.h, including the Windows-specific ones involving llutf16string and std::wstring. Add a mini-lecture in llstring.h about appropriate use of string types on Windows. Add LL_WCHAR_T_NATIVE llpreprocessor.h macro so we can detect whether to provide separate conversions for llutf16string and std::wstring, or whether those would collide because the types are identical. Add inline ll_convert_wide_to_string(const std::wstring&) overloads so caller isn't required to call arg.c_str(), which naturally permits an ll_convert alias. Add ll_convert_wide_to_wstring(), ll_convert_wstring_to_wide() as placeholders for converting between Windows std::wstring and Linden LLWString, with corresponding ll_convert aliases. We don't yet have library code to perform such conversions officially; for now, just copy characters. Add LLStringUtil::getenv(key) and getoptenv(key) functions. The latter returns boost::optional in case the caller needs to detect absence of a given environment variable rather than simply accepting a default value. Naturally getenv(), which accepts a default, is implemented using getoptenv(). getoptenv(), in turn, is implemented using an underlying llstring_getoptenv(). On Windows, llstring_getoptenv() returns boost::optional (based on GetEnvironmentVariableW()), whereas elsewhere, llstring_getoptenv() returns boost::optional (based on classic Posix getenv()). The beauty of generic ll_convert is that the portable LLStringUtilBase:: getoptenv() template can call the platform-specific llstring_getoptenv() and transparently perform whatever conversion is necessary to return the desired string_type. Add windows_message(error) template, with an overload that implicitly calls GetLastError(). We provide a single concrete windows_message() implementation because that's what we get from Windows FormatMessageW() -- everything else is a generic conversion to the desired target string type. This obviates llprocess.cpp's previous WindowsErrorString() implementation -- reimplement using windows_message(). --- indra/llcommon/llpreprocessor.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'indra/llcommon/llpreprocessor.h') diff --git a/indra/llcommon/llpreprocessor.h b/indra/llcommon/llpreprocessor.h index ef015fdce4..e8f9981437 100644 --- a/indra/llcommon/llpreprocessor.h +++ b/indra/llcommon/llpreprocessor.h @@ -101,6 +101,9 @@ #endif +// Although thread_local is now a standard storage class, we can't just +// #define LL_THREAD_LOCAL as thread_local because the *usage* is different. +// We'll have to take the time to change LL_THREAD_LOCAL declarations by hand. #if LL_WINDOWS # define LL_THREAD_LOCAL __declspec(thread) #else @@ -177,6 +180,24 @@ #define LL_DLLIMPORT #endif // LL_WINDOWS +#if ! defined(LL_WINDOWS) +#define LL_WCHAR_T_NATIVE 1 +#else // LL_WINDOWS +// https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros +// _WCHAR_T_DEFINED is defined if wchar_t is provided at all. +// Specifically, it has value 1 if wchar_t is an intrinsic type, else empty. +// _NATIVE_WCHAR_T_DEFINED has value 1 if wchar_t is intrinsic, else undefined. +// For years we have compiled with /Zc:wchar_t-, meaning that wchar_t is a +// typedef for unsigned short (in stddef.h). Lore has it that one of our +// proprietary binary-only libraries has traditionally been built that way and +// therefore EVERYTHING ELSE requires it. Therefore, in a typical Linden +// Windows build, _WCHAR_T_DEFINED is defined but empty, while +// _NATIVE_WCHAR_T_DEFINED is undefined. +# if defined(_NATIVE_WCHAR_T_DEFINED) +# define LL_WCHAR_T_NATIVE 1 +# endif // _NATIVE_WCHAR_T_DEFINED +#endif // LL_WINDOWS + #if LL_COMMON_LINK_SHARED // CMake automagically defines llcommon_EXPORTS only when building llcommon // sources, and only when llcommon is a shared library (i.e. when -- cgit v1.2.3