Merge pull request #1787 from sylveon/windows-separator-filenames

Better support for / separators on Windows, improve wchar filename coverage

appveyor.yml

@@ -5,31 +5,51 @@ environment:
     - GENERATOR: '"Visual Studio 14 2015"'
       BUILD_TYPE: Debug
       WCHAR: 'OFF'
+      WCHAR_FILES: 'OFF'
       BUILD_SHARED: 'OFF'
+      BUILD_EXAMPLE: 'ON'
     - GENERATOR: '"Visual Studio 14 2015"'
       BUILD_TYPE: Release
       WCHAR: 'ON'
+      WCHAR_FILES: 'OFF'
       BUILD_SHARED: 'OFF'
+      BUILD_EXAMPLE: 'ON'
     - GENERATOR: '"Visual Studio 14 2015 Win64"'
       BUILD_TYPE: Debug
       WCHAR: 'ON'
+      WCHAR_FILES: 'OFF'
       BUILD_SHARED: 'OFF'
+      BUILD_EXAMPLE: 'ON'
     - GENERATOR: '"Visual Studio 14 2015 Win64"'
       BUILD_TYPE: Release
       WCHAR: 'ON'
+      WCHAR_FILES: 'OFF'
       BUILD_SHARED: 'OFF'
+      BUILD_EXAMPLE: 'ON'
     - GENERATOR: '"Visual Studio 15 2017 Win64"'
       BUILD_TYPE: Debug
       WCHAR: 'ON'
+      WCHAR_FILES: 'OFF'
       BUILD_SHARED: 'OFF'
+      BUILD_EXAMPLE: 'ON'
     - GENERATOR: '"Visual Studio 15 2017 Win64"'
       BUILD_TYPE: Release
       WCHAR: 'OFF'
+      WCHAR_FILES: 'OFF'
       BUILD_SHARED: 'OFF'
+      BUILD_EXAMPLE: 'ON'
     - GENERATOR: '"Visual Studio 15 2017 Win64"'
       BUILD_TYPE: Release
       WCHAR: 'OFF'
+      WCHAR_FILES: 'OFF'
       BUILD_SHARED: 'ON'
+      BUILD_EXAMPLE: 'ON'
+    - GENERATOR: '"Visual Studio 15 2017 Win64"'
+      BUILD_TYPE: Release
+      WCHAR: 'ON'
+      WCHAR_FILES: 'ON'
+      BUILD_SHARED: 'ON'
+      BUILD_EXAMPLE: 'OFF'
 build_script:
   - cmd: >-
       set
@@ -40,7 +60,7 @@ build_script:
 
       set PATH=%PATH%;C:\Program Files\Git\usr\bin
 
-      cmake .. -G %GENERATOR% -DCMAKE_BUILD_TYPE=%BUILD_TYPE% -DSPDLOG_WCHAR_SUPPORT=%WCHAR% -DSPDLOG_BUILD_SHARED=%BUILD_SHARED% -DSPDLOG_BUILD_EXAMPLE=ON -DSPDLOG_BUILD_EXAMPLE_HO=ON -DSPDLOG_BUILD_TESTS=ON -DSPDLOG_BUILD_TESTS_HO=OFF -DSPDLOG_BUILD_WARNINGS=ON
+      cmake .. -G %GENERATOR% -DCMAKE_BUILD_TYPE=%BUILD_TYPE% -DSPDLOG_WCHAR_SUPPORT=%WCHAR% -DSPDLOG_WCHAR_FILENAMES=%WCHAR_FILES% -DSPDLOG_BUILD_SHARED=%BUILD_SHARED% -DSPDLOG_BUILD_EXAMPLE=%BUILD_EXAMPLE% -DSPDLOG_BUILD_EXAMPLE_HO=%BUILD_EXAMPLE% -DSPDLOG_BUILD_TESTS=ON -DSPDLOG_BUILD_TESTS_HO=OFF -DSPDLOG_BUILD_WARNINGS=ON
 
       cmake --build . --config %BUILD_TYPE%
 

include/spdlog/common.h

@@ -88,7 +88,9 @@ class sink;
 
 #if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
 using filename_t = std::wstring;
-#define SPDLOG_FILENAME_T(s) L##s
+// allow macro expansion to occur in SPDLOG_FILENAME_T
+#define SPDLOG_FILENAME_T_INNER(s) L##s
+#define SPDLOG_FILENAME_T(s) SPDLOG_FILENAME_T_INNER(s)
 #else
 using filename_t = std::string;
 #define SPDLOG_FILENAME_T(s) s
@@ -101,6 +103,7 @@ using err_handler = std::function<void(const std::string &err_msg)>;
 using string_view_t = fmt::basic_string_view<char>;
 using wstring_view_t = fmt::basic_string_view<wchar_t>;
 using memory_buf_t = fmt::basic_memory_buffer<char, 250>;
+using wmemory_buf_t = fmt::basic_memory_buffer<wchar_t, 250>;
 
 #ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
 #ifndef _WIN32

include/spdlog/details/file_helper-inl.h

@@ -133,7 +133,7 @@ SPDLOG_INLINE std::tuple<filename_t, filename_t> file_helper::split_by_extension
     }
 
     // treat cases like "/etc/rc.d/somelogfile or "/abc/.hiddenfile"
-    auto folder_index = fname.rfind(details::os::folder_sep);
+    auto folder_index = fname.find_last_of(details::os::folder_seps_filename);
     if (folder_index != filename_t::npos && folder_index >= ext_index - 1)
     {
         return std::make_tuple(fname, filename_t());

include/spdlog/details/os-inl.h

@@ -436,7 +436,7 @@ SPDLOG_INLINE bool in_terminal(FILE *file) SPDLOG_NOEXCEPT
 #if (defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT) || defined(SPDLOG_WCHAR_FILENAMES)) && defined(_WIN32)
 SPDLOG_INLINE void wstr_to_utf8buf(wstring_view_t wstr, memory_buf_t &target)
 {
-    if (wstr.size() > static_cast<size_t>((std::numeric_limits<int>::max)()))
+    if (wstr.size() > static_cast<size_t>(std::numeric_limits<int>::max()) / 2 - 1)
     {
         throw_spdlog_ex("UTF-16 string is too big to be converted to UTF-8");
     }
@@ -469,9 +469,9 @@ SPDLOG_INLINE void wstr_to_utf8buf(wstring_view_t wstr, memory_buf_t &target)
     throw_spdlog_ex(fmt::format("WideCharToMultiByte failed. Last error: {}", ::GetLastError()));
 }
 
-SPDLOG_INLINE void utf8_to_wstrbuf(string_view_t str, memory_buf_t &target)
+SPDLOG_INLINE void utf8_to_wstrbuf(string_view_t str, wmemory_buf_t &target)
 {
-    if (str.size() > static_cast<size_t>((std::numeric_limits<int>::max)()))
+    if (str.size() > static_cast<size_t>(std::numeric_limits<int>::max()) - 1)
     {
         throw_spdlog_ex("UTF-8 string is too big to be converted to UTF-16");
     }
@@ -484,7 +484,7 @@ SPDLOG_INLINE void utf8_to_wstrbuf(string_view_t str, memory_buf_t &target)
     }
 
     int result_size = static_cast<int>(target.capacity());
-    if ((str_size + 1) * 2 < result_size)
+    if (str_size + 1 > result_size)
     {
         result_size = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, str.data(), str_size, NULL, 0);
     }
@@ -492,7 +492,7 @@ SPDLOG_INLINE void utf8_to_wstrbuf(string_view_t str, memory_buf_t &target)
     if (result_size > 0)
     {
         target.resize(result_size);
-        result_size = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, str.data(), str_size, (LPWSTR)target.data(), result_size);
+        result_size = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, str.data(), str_size, target.data(), result_size);
 
         if (result_size > 0)
         {
@@ -533,15 +533,10 @@ SPDLOG_INLINE bool create_dir(filename_t path)
         return false;
     }
 
-#ifdef _WIN32
-    // support forward slash in windows
-    std::replace(path.begin(), path.end(), '/', folder_sep);
-#endif
-
     size_t search_offset = 0;
     do
     {
-        auto token_pos = path.find(folder_sep, search_offset);
+        auto token_pos = path.find_first_of(folder_seps_filename, search_offset);
         // treat the entire path as a folder if no folder separator not found
         if (token_pos == filename_t::npos)
         {
@@ -567,11 +562,7 @@ SPDLOG_INLINE bool create_dir(filename_t path)
 // "abc///" => "abc//"
 SPDLOG_INLINE filename_t dir_name(filename_t path)
 {
-#ifdef _WIN32
-    // support forward slash in windows
-    std::replace(path.begin(), path.end(), '/', folder_sep);
-#endif
-    auto pos = path.find_last_of(folder_sep);
+    auto pos = path.find_last_of(folder_seps_filename);
     return pos != filename_t::npos ? path.substr(0, pos) : filename_t{};
 }
 

include/spdlog/details/os.h

@@ -32,11 +32,16 @@ SPDLOG_API std::tm gmtime() SPDLOG_NOEXCEPT;
 SPDLOG_CONSTEXPR static const char *default_eol = SPDLOG_EOL;
 
 // folder separator
+#if !defined(SPDLOG_FOLDER_SEPS)
 #ifdef _WIN32
-static const char folder_sep = '\\';
+#define SPDLOG_FOLDER_SEPS "\\/"
 #else
-SPDLOG_CONSTEXPR static const char folder_sep = '/';
+#define SPDLOG_FOLDER_SEPS "/"
 #endif
+#endif
+
+SPDLOG_CONSTEXPR static const char folder_seps[] = SPDLOG_FOLDER_SEPS;
+SPDLOG_CONSTEXPR static const filename_t::value_type folder_seps_filename[] = SPDLOG_FILENAME_T(SPDLOG_FOLDER_SEPS);
 
 // fopen_s on non windows for writing
 SPDLOG_API bool fopen_s(FILE **fp, const filename_t &filename, const filename_t &mode);
@@ -86,7 +91,7 @@ SPDLOG_API bool in_terminal(FILE *file) SPDLOG_NOEXCEPT;
 #if (defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT) || defined(SPDLOG_WCHAR_FILENAMES)) && defined(_WIN32)
 SPDLOG_API void wstr_to_utf8buf(wstring_view_t wstr, memory_buf_t &target);
 
-SPDLOG_INLINE void utf8_to_wstrbuf(string_view_t str, memory_buf_t &target);
+SPDLOG_API void utf8_to_wstrbuf(string_view_t str, wmemory_buf_t &target);
 #endif
 
 // Return directory name from given path or empty string

include/spdlog/pattern_formatter-inl.h

@@ -13,11 +13,13 @@
 #include <spdlog/fmt/fmt.h>
 #include <spdlog/formatter.h>
 
+#include <algorithm>
 #include <array>
 #include <chrono>
 #include <ctime>
 #include <cctype>
 #include <cstring>
+#include <iterator>
 #include <memory>
 #include <mutex>
 #include <string>
@@ -814,11 +816,31 @@ public:
         : flag_formatter(padinfo)
     {}
 
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4127) // consider using 'if constexpr' instead
+#endif // _MSC_VER
     static const char *basename(const char *filename)
     {
-        const char *rv = std::strrchr(filename, os::folder_sep);
+        // if the size is 2 (1 character + null terminator) we can use the more efficient strrchr
+        // the branch will be elided by optimizations
+        if (sizeof(os::folder_seps) == 2)
+        {
+            const char *rv = std::strrchr(filename, os::folder_seps[0]);
             return rv != nullptr ? rv + 1 : filename;
         }
+        else
+        {
+            const std::reverse_iterator<const char*> begin(filename + std::strlen(filename));
+            const std::reverse_iterator<const char*> end(filename);
+
+            const auto it = std::find_first_of(begin, end, std::begin(os::folder_seps), std::end(os::folder_seps) - 1);
+            return it != end ? it.base() : filename;
+        }
+    }
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif // _MSC_VER
 
     void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
     {

include/spdlog/sinks/win_eventlog_sink.h

@@ -224,35 +224,22 @@ protected:
         formatted.push_back('\0');
 
 #ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
-        try
-        {
-            memory_buf_t buf;
+        wmemory_buf_t buf;
         details::os::utf8_to_wstrbuf(string_view_t(formatted.data(), formatted.size()), buf);
 
-            LPCWSTR lp_wstr = reinterpret_cast<LPCWSTR>(buf.data());
+        LPCWSTR lp_wstr = buf.data();
         succeeded = ::ReportEventW(event_log_handle(), eventlog::get_event_type(msg), eventlog::get_event_category(msg), event_id_,
                 current_user_sid_.as_sid(), 1, 0, &lp_wstr, nullptr);
-
-            if (!succeeded)
-            {
-                SPDLOG_THROW(win32_error("ReportEvent"));
-            }
-        }
-        catch (...)
-        {
-            // WCHAR string conversion can fail and if it does, we shouldn't call to report event function.
-        }
 #else
-        LPCSTR lp_str = reinterpret_cast<LPCSTR>(formatted.data());
-
+        LPCSTR lp_str = formatted.data();
         succeeded = ::ReportEventA(event_log_handle(), eventlog::get_event_type(msg), eventlog::get_event_category(msg), event_id_,
                 current_user_sid_.as_sid(), 1, 0, &lp_str, nullptr);
+#endif
 
         if (!succeeded)
         {
             SPDLOG_THROW(win32_error("ReportEvent"));
         }
-#endif
     }
 
     void flush_() override {}

include/spdlog/tweakme.h

@@ -58,6 +58,14 @@
 // #define SPDLOG_EOL ";-)\n"
 ///////////////////////////////////////////////////////////////////////////////
 
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to override default folder separators ("/" or "\\/" under
+// Linux/Windows). Each character in the string is treated as a different
+// separator.
+//
+// #define SPDLOG_FOLDER_SEPS "\\"
+///////////////////////////////////////////////////////////////////////////////
+
 ///////////////////////////////////////////////////////////////////////////////
 // Uncomment to use your own copy of the fmt library instead of spdlog's copy.
 // In this case spdlog will try to include <fmt/format.h> so set your -I flag

tests/test_async.cpp

@@ -3,6 +3,8 @@
 #include "spdlog/sinks/basic_file_sink.h"
 #include "test_sink.h"
 
+#define TEST_FILENAME "test_logs/async_test.log"
+
 TEST_CASE("basic async test ", "[async]")
 {
     auto test_sink = std::make_shared<spdlog::sinks::test_sink_mt>();
@@ -149,7 +151,7 @@ TEST_CASE("to_file", "[async]")
     prepare_logdir();
     size_t messages = 1024;
     size_t tp_threads = 1;
-    std::string filename = "test_logs/async_test.log";
+    spdlog::filename_t filename = SPDLOG_FILENAME_T(TEST_FILENAME);
     {
         auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>(filename, true);
         auto tp = std::make_shared<spdlog::details::thread_pool>(messages, tp_threads);
@@ -161,8 +163,8 @@ TEST_CASE("to_file", "[async]")
         }
     }
 
-    require_message_count(filename, messages);
-    auto contents = file_contents(filename);
+    require_message_count(TEST_FILENAME, messages);
+    auto contents = file_contents(TEST_FILENAME);
     using spdlog::details::os::default_eol;
     REQUIRE(ends_with(contents, fmt::format("Hello message #1023{}", default_eol)));
 }
@@ -172,7 +174,7 @@ TEST_CASE("to_file multi-workers", "[async]")
     prepare_logdir();
     size_t messages = 1024 * 10;
     size_t tp_threads = 10;
-    std::string filename = "test_logs/async_test.log";
+    spdlog::filename_t filename = SPDLOG_FILENAME_T(TEST_FILENAME);
     {
         auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>(filename, true);
         auto tp = std::make_shared<spdlog::details::thread_pool>(messages, tp_threads);
@@ -184,5 +186,5 @@ TEST_CASE("to_file multi-workers", "[async]")
         }
     }
 
-    require_message_count(filename, messages);
+    require_message_count(TEST_FILENAME, messages);
 }

tests/test_create_dir.cpp

@@ -6,7 +6,7 @@
 using spdlog::details::os::create_dir;
 using spdlog::details::os::path_exists;
 
-bool try_create_dir(const char *path, const char *normalized_path)
+bool try_create_dir(const spdlog::filename_t &path, const spdlog::filename_t &normalized_path)
 {
     auto rv = create_dir(path);
     REQUIRE(rv == true);
@@ -17,24 +17,24 @@ TEST_CASE("create_dir", "[create_dir]")
 {
     prepare_logdir();
 
-    REQUIRE(try_create_dir("test_logs/dir1/dir1", "test_logs/dir1/dir1"));
-    REQUIRE(try_create_dir("test_logs/dir1/dir1", "test_logs/dir1/dir1")); // test existing
-    REQUIRE(try_create_dir("test_logs/dir1///dir2//", "test_logs/dir1/dir2"));
-    REQUIRE(try_create_dir("./test_logs/dir1/dir3", "test_logs/dir1/dir3"));
-    REQUIRE(try_create_dir("test_logs/../test_logs/dir1/dir4", "test_logs/dir1/dir4"));
+    REQUIRE(try_create_dir(SPDLOG_FILENAME_T("test_logs/dir1/dir1"), SPDLOG_FILENAME_T("test_logs/dir1/dir1")));
+    REQUIRE(try_create_dir(SPDLOG_FILENAME_T("test_logs/dir1/dir1"), SPDLOG_FILENAME_T("test_logs/dir1/dir1"))); // test existing
+    REQUIRE(try_create_dir(SPDLOG_FILENAME_T("test_logs/dir1///dir2//"), SPDLOG_FILENAME_T("test_logs/dir1/dir2")));
+    REQUIRE(try_create_dir(SPDLOG_FILENAME_T("./test_logs/dir1/dir3"), SPDLOG_FILENAME_T("test_logs/dir1/dir3")));
+    REQUIRE(try_create_dir(SPDLOG_FILENAME_T("test_logs/../test_logs/dir1/dir4"), SPDLOG_FILENAME_T("test_logs/dir1/dir4")));
 
 #ifdef WIN32
     // test backslash folder separator
-    REQUIRE(try_create_dir("test_logs\\dir1\\dir222", "test_logs\\dir1\\dir222"));
-    REQUIRE(try_create_dir("test_logs\\dir1\\dir223\\", "test_logs\\dir1\\dir223\\"));
-    REQUIRE(try_create_dir(".\\test_logs\\dir1\\dir2\\dir99\\..\\dir23", "test_logs\\dir1\\dir2\\dir23"));
-    REQUIRE(try_create_dir("test_logs\\..\\test_logs\\dir1\\dir5", "test_logs\\dir1\\dir5"));
+    REQUIRE(try_create_dir(SPDLOG_FILENAME_T("test_logs\\dir1\\dir222"), SPDLOG_FILENAME_T("test_logs\\dir1\\dir222")));
+    REQUIRE(try_create_dir(SPDLOG_FILENAME_T("test_logs\\dir1\\dir223\\"), SPDLOG_FILENAME_T("test_logs\\dir1\\dir223\\")));
+    REQUIRE(try_create_dir(SPDLOG_FILENAME_T(".\\test_logs\\dir1\\dir2\\dir99\\..\\dir23"), SPDLOG_FILENAME_T("test_logs\\dir1\\dir2\\dir23")));
+    REQUIRE(try_create_dir(SPDLOG_FILENAME_T("test_logs\\..\\test_logs\\dir1\\dir5"), SPDLOG_FILENAME_T("test_logs\\dir1\\dir5")));
 #endif
 }
 
 TEST_CASE("create_invalid_dir", "[create_dir]")
 {
-    REQUIRE(create_dir("") == false);
+    REQUIRE(create_dir(SPDLOG_FILENAME_T("")) == false);
     REQUIRE(create_dir(spdlog::filename_t{}) == false);
 #ifdef __linux__
     REQUIRE(create_dir("/proc/spdlog-utest") == false);
@@ -44,37 +44,31 @@ TEST_CASE("create_invalid_dir", "[create_dir]")
 TEST_CASE("dir_name", "[create_dir]")
 {
     using spdlog::details::os::dir_name;
-    REQUIRE(dir_name("").empty());
-    REQUIRE(dir_name("dir").empty());
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("")).empty());
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("dir")).empty());
 
 #ifdef WIN32
-    REQUIRE(dir_name(R"(dir\)") == "dir");
-    REQUIRE(dir_name(R"(dir\\\)") == R"(dir\\)");
-    REQUIRE(dir_name(R"(dir\file)") == "dir");
-    REQUIRE(dir_name(R"(dir/file)") == "dir");
-    REQUIRE(dir_name(R"(dir\file.txt)") == "dir");
-    REQUIRE(dir_name(R"(dir/file)") == "dir");
-    REQUIRE(dir_name(R"(dir\file.txt\)") == R"(dir\file.txt)");
-    REQUIRE(dir_name(R"(dir/file.txt/)") == R"(dir\file.txt)");
-    REQUIRE(dir_name(R"(\dir\file.txt)") == R"(\dir)");
-    REQUIRE(dir_name(R"(/dir/file.txt)") == R"(\dir)");
-    REQUIRE(dir_name(R"(\\dir\file.txt)") == R"(\\dir)");
-    REQUIRE(dir_name(R"(//dir/file.txt)") == R"(\\dir)");
-    REQUIRE(dir_name(R"(..\file.txt)") == "..");
-    REQUIRE(dir_name(R"(../file.txt)") == "..");
-    REQUIRE(dir_name(R"(.\file.txt)") == ".");
-    REQUIRE(dir_name(R"(./file.txt)") == ".");
-    REQUIRE(dir_name(R"(c:\\a\b\c\d\file.txt)") == R"(c:\\a\b\c\d)");
-    REQUIRE(dir_name(R"(c://a/b/c/d/file.txt)") == R"(c:\\a\b\c\d)");
-#else
-    REQUIRE(dir_name("dir/") == "dir");
-    REQUIRE(dir_name("dir///") == "dir//");
-    REQUIRE(dir_name("dir/file") == "dir");
-    REQUIRE(dir_name("dir/file.txt") == "dir");
-    REQUIRE(dir_name("dir/file.txt/") == "dir/file.txt");
-    REQUIRE(dir_name("/dir/file.txt") == "/dir");
-    REQUIRE(dir_name("//dir/file.txt") == "//dir");
-    REQUIRE(dir_name("../file.txt") == "..");
-    REQUIRE(dir_name("./file.txt") == ".");
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(dir\)")) == SPDLOG_FILENAME_T("dir"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(dir\\\)")) == SPDLOG_FILENAME_T(R"(dir\\)"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(dir\file)")) == SPDLOG_FILENAME_T("dir"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(dir/file)")) == SPDLOG_FILENAME_T("dir"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(dir\file.txt)")) == SPDLOG_FILENAME_T("dir"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(dir/file)")) == SPDLOG_FILENAME_T("dir"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(dir\file.txt\)")) == SPDLOG_FILENAME_T(R"(dir\file.txt)"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(\dir\file.txt)")) == SPDLOG_FILENAME_T(R"(\dir)"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(\\dir\file.txt)")) == SPDLOG_FILENAME_T(R"(\\dir)"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(..\file.txt)")) == SPDLOG_FILENAME_T(".."));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(.\file.txt)")) == SPDLOG_FILENAME_T("."));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(c:\\a\b\c\d\file.txt)")) == SPDLOG_FILENAME_T(R"(c:\\a\b\c\d)"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T(R"(c://a/b/c/d/file.txt)")) == SPDLOG_FILENAME_T(R"(c://a/b/c/d)"));
 #endif
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("dir/")) == SPDLOG_FILENAME_T("dir"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("dir///")) == SPDLOG_FILENAME_T("dir//"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("dir/file")) == SPDLOG_FILENAME_T("dir"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("dir/file.txt")) == SPDLOG_FILENAME_T("dir"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("dir/file.txt/")) == SPDLOG_FILENAME_T("dir/file.txt"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("/dir/file.txt")) == SPDLOG_FILENAME_T("/dir"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("//dir/file.txt")) == SPDLOG_FILENAME_T("//dir"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("../file.txt")) == SPDLOG_FILENAME_T(".."));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("./file.txt")) == SPDLOG_FILENAME_T("."));
 }

tests/test_daily_logger.cpp

@@ -3,6 +3,8 @@
  */
 #include "includes.h"
 
+using filename_memory_buf_t = fmt::basic_memory_buffer<spdlog::filename_t::value_type, 250>;
+
 TEST_CASE("daily_logger with dateonly calculator", "[daily_logger]")
 {
     using sink_type = spdlog::sinks::daily_file_sink<std::mutex, spdlog::sinks::daily_filename_calculator>;
@@ -10,10 +12,10 @@ TEST_CASE("daily_logger with dateonly calculator", "[daily_logger]")
     prepare_logdir();
 
     // calculate filename (time based)
-    std::string basename = "test_logs/daily_dateonly";
+    spdlog::filename_t basename = SPDLOG_FILENAME_T("test_logs/daily_dateonly");
     std::tm tm = spdlog::details::os::localtime();
-    spdlog::memory_buf_t w;
-    fmt::format_to(w, "{}_{:04d}-{:02d}-{:02d}", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
+    filename_memory_buf_t w;
+    fmt::format_to(w, SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}"), basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
 
     auto logger = spdlog::create<sink_type>("logger", basename, 0, 0);
     for (int i = 0; i < 10; ++i)
@@ -23,7 +25,13 @@ TEST_CASE("daily_logger with dateonly calculator", "[daily_logger]")
     }
     logger->flush();
 
+#ifdef SPDLOG_WCHAR_FILENAMES
+    spdlog::memory_buf_t buf;
+    spdlog::details::os::wstr_to_utf8buf(fmt::to_string(w), buf);
+    auto filename = fmt::to_string(buf);
+#else
     auto filename = fmt::to_string(w);
+#endif
     require_message_count(filename, 10);
 }
 
@@ -31,8 +39,8 @@ struct custom_daily_file_name_calculator
 {
     static spdlog::filename_t calc_filename(const spdlog::filename_t &basename, const tm &now_tm)
     {
-        spdlog::memory_buf_t w;
-        fmt::format_to(w, "{}{:04d}{:02d}{:02d}", basename, now_tm.tm_year + 1900, now_tm.tm_mon + 1, now_tm.tm_mday);
+        filename_memory_buf_t w;
+        fmt::format_to(w, SPDLOG_FILENAME_T("{}{:04d}{:02d}{:02d}"), basename, now_tm.tm_year + 1900, now_tm.tm_mon + 1, now_tm.tm_mday);
         return fmt::to_string(w);
     }
 };
@@ -44,10 +52,10 @@ TEST_CASE("daily_logger with custom calculator", "[daily_logger]")
     prepare_logdir();
 
     // calculate filename (time based)
-    std::string basename = "test_logs/daily_dateonly";
+    spdlog::filename_t basename = SPDLOG_FILENAME_T("test_logs/daily_dateonly");
     std::tm tm = spdlog::details::os::localtime();
-    spdlog::memory_buf_t w;
-    fmt::format_to(w, "{}{:04d}{:02d}{:02d}", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
+    filename_memory_buf_t w;
+    fmt::format_to(w, SPDLOG_FILENAME_T("{}{:04d}{:02d}{:02d}"), basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
 
     auto logger = spdlog::create<sink_type>("logger", basename, 0, 0);
     for (int i = 0; i < 10; ++i)
@@ -57,7 +65,13 @@ TEST_CASE("daily_logger with custom calculator", "[daily_logger]")
 
     logger->flush();
 
+#ifdef SPDLOG_WCHAR_FILENAMES
+    spdlog::memory_buf_t buf;
+    spdlog::details::os::wstr_to_utf8buf(fmt::to_string(w), buf);
+    auto filename = fmt::to_string(buf);
+#else
     auto filename = fmt::to_string(w);
+#endif
     require_message_count(filename, 10);
 }
 
@@ -67,20 +81,20 @@ TEST_CASE("daily_logger with custom calculator", "[daily_logger]")
 
 TEST_CASE("rotating_file_sink::calc_filename1", "[rotating_file_sink]]")
 {
-    auto filename = spdlog::sinks::rotating_file_sink_st::calc_filename("rotated.txt", 3);
-    REQUIRE(filename == "rotated.3.txt");
+    auto filename = spdlog::sinks::rotating_file_sink_st::calc_filename(SPDLOG_FILENAME_T("rotated.txt"), 3);
+    REQUIRE(filename == SPDLOG_FILENAME_T("rotated.3.txt"));
 }
 
 TEST_CASE("rotating_file_sink::calc_filename2", "[rotating_file_sink]]")
 {
-    auto filename = spdlog::sinks::rotating_file_sink_st::calc_filename("rotated", 3);
-    REQUIRE(filename == "rotated.3");
+    auto filename = spdlog::sinks::rotating_file_sink_st::calc_filename(SPDLOG_FILENAME_T("rotated"), 3);
+    REQUIRE(filename == SPDLOG_FILENAME_T("rotated.3"));
 }
 
 TEST_CASE("rotating_file_sink::calc_filename3", "[rotating_file_sink]]")
 {
-    auto filename = spdlog::sinks::rotating_file_sink_st::calc_filename("rotated.txt", 0);
-    REQUIRE(filename == "rotated.txt");
+    auto filename = spdlog::sinks::rotating_file_sink_st::calc_filename(SPDLOG_FILENAME_T("rotated.txt"), 0);
+    REQUIRE(filename == SPDLOG_FILENAME_T("rotated.txt"));
 }
 
 // regex supported only from gcc 4.9 and above
@@ -91,10 +105,10 @@ TEST_CASE("rotating_file_sink::calc_filename3", "[rotating_file_sink]]")
 TEST_CASE("daily_file_sink::daily_filename_calculator", "[daily_file_sink]]")
 {
     // daily_YYYY-MM-DD_hh-mm.txt
-    auto filename = spdlog::sinks::daily_filename_calculator::calc_filename("daily.txt", spdlog::details::os::localtime());
+    auto filename = spdlog::sinks::daily_filename_calculator::calc_filename(SPDLOG_FILENAME_T("daily.txt"), spdlog::details::os::localtime());
     // date regex based on https://www.regular-expressions.info/dates.html
-    std::regex re(R"(^daily_(19|20)\d\d-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])\.txt$)");
-    std::smatch match;
+    std::basic_regex<spdlog::filename_t::value_type> re(SPDLOG_FILENAME_T(R"(^daily_(19|20)\d\d-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])\.txt$)"));
+    std::match_results<spdlog::filename_t::const_iterator> match;
     REQUIRE(std::regex_match(filename, match, re));
 }
 #endif
@@ -116,7 +130,7 @@ static void test_rotate(int days_to_run, uint16_t max_days, uint16_t expected_n_
 
     prepare_logdir();
 
-    std::string basename = "test_logs/daily_rotate.txt";
+    spdlog::filename_t basename = SPDLOG_FILENAME_T("test_logs/daily_rotate.txt");
     daily_file_sink_st sink{basename, 2, 30, true, max_days};
 
     // simulate messages with 24 intervals

tests/test_errors.cpp

@@ -5,6 +5,9 @@
 
 #include <iostream>
 
+#define SIMPLE_LOG "test_logs/simple_log.txt"
+#define SIMPLE_ASYNC_LOG "test_logs/simple_async_log.txt"
+
 class failing_sink : public spdlog::sinks::base_sink<std::mutex>
 {
 protected:
@@ -22,7 +25,7 @@ protected:
 TEST_CASE("default_error_handler", "[errors]]")
 {
     prepare_logdir();
-    std::string filename = "test_logs/simple_log.txt";
+    spdlog::filename_t filename = SPDLOG_FILENAME_T(SIMPLE_LOG);
 
     auto logger = spdlog::create<spdlog::sinks::basic_file_sink_mt>("test-error", filename, true);
     logger->set_pattern("%v");
@@ -31,8 +34,8 @@ TEST_CASE("default_error_handler", "[errors]]")
     logger->flush();
 
     using spdlog::details::os::default_eol;
-    REQUIRE(file_contents(filename) == fmt::format("Test message 2{}", default_eol));
-    REQUIRE(count_lines(filename) == 1);
+    REQUIRE(file_contents(SIMPLE_LOG) == fmt::format("Test message 2{}", default_eol));
+    REQUIRE(count_lines(SIMPLE_LOG) == 1);
 }
 
 struct custom_ex
@@ -40,7 +43,7 @@ struct custom_ex
 TEST_CASE("custom_error_handler", "[errors]]")
 {
     prepare_logdir();
-    std::string filename = "test_logs/simple_log.txt";
+    spdlog::filename_t filename = SPDLOG_FILENAME_T(SIMPLE_LOG);
     auto logger = spdlog::create<spdlog::sinks::basic_file_sink_mt>("logger", filename, true);
     logger->flush_on(spdlog::level::info);
     logger->set_error_handler([=](const std::string &) { throw custom_ex(); });
@@ -48,7 +51,7 @@ TEST_CASE("custom_error_handler", "[errors]]")
 
     REQUIRE_THROWS_AS(logger->info("Bad format msg {} {}", "xxx"), custom_ex);
     logger->info("Good message #2");
-    require_message_count(filename, 2);
+    require_message_count(SIMPLE_LOG, 2);
 }
 
 TEST_CASE("default_error_handler2", "[errors]]")
@@ -72,7 +75,7 @@ TEST_CASE("async_error_handler", "[errors]]")
     prepare_logdir();
     std::string err_msg("log failed with some msg");
 
-    std::string filename = "test_logs/simple_async_log.txt";
+    spdlog::filename_t filename = SPDLOG_FILENAME_T(SIMPLE_ASYNC_LOG);
     {
         spdlog::init_thread_pool(128, 1);
         auto logger = spdlog::create_async<spdlog::sinks::basic_file_sink_mt>("logger", filename, true);
@@ -90,7 +93,7 @@ TEST_CASE("async_error_handler", "[errors]]")
         spdlog::drop("logger"); // force logger to drain the queue and shutdown
     }
     spdlog::init_thread_pool(128, 1);
-    require_message_count(filename, 2);
+    require_message_count(SIMPLE_ASYNC_LOG, 2);
     REQUIRE(file_contents("test_logs/custom_err.txt") == err_msg);
 }
 
@@ -100,7 +103,7 @@ TEST_CASE("async_error_handler2", "[errors]]")
     prepare_logdir();
     std::string err_msg("This is async handler error message");
     {
-        spdlog::details::os::create_dir("test_logs");
+        spdlog::details::os::create_dir(SPDLOG_FILENAME_T("test_logs"));
         spdlog::init_thread_pool(128, 1);
         auto logger = spdlog::create_async<failing_sink>("failed_logger");
         logger->set_error_handler([=](const std::string &) {

tests/test_eventlog.cpp

@@ -24,20 +24,20 @@ static void test_single_print(std::function<void(std::string const &)> do_log, s
                 REQUIRE(CloseEventLog(handle_));
             }
         }
-    } event_log{::OpenEventLog(nullptr, TEST_SOURCE)};
+    } event_log{::OpenEventLogA(nullptr, TEST_SOURCE)};
 
     REQUIRE(event_log.handle_);
 
     DWORD read_bytes{}, size_needed{};
     auto ok =
-        ::ReadEventLog(event_log.handle_, EVENTLOG_SEQUENTIAL_READ | EVENTLOG_BACKWARDS_READ, 0, &read_bytes, 0, &read_bytes, &size_needed);
+        ::ReadEventLogA(event_log.handle_, EVENTLOG_SEQUENTIAL_READ | EVENTLOG_BACKWARDS_READ, 0, &read_bytes, 0, &read_bytes, &size_needed);
     REQUIRE(!ok);
     REQUIRE(::GetLastError() == ERROR_INSUFFICIENT_BUFFER);
 
     std::vector<char> record_buffer(size_needed);
     PEVENTLOGRECORD record = (PEVENTLOGRECORD)record_buffer.data();
 
-    ok = ::ReadEventLog(
+    ok = ::ReadEventLogA(
         event_log.handle_, EVENTLOG_SEQUENTIAL_READ | EVENTLOG_BACKWARDS_READ, 0, record, size_needed, &read_bytes, &size_needed);
     REQUIRE(ok);
 

tests/test_file_helper.cpp

@@ -3,6 +3,8 @@
  */
 #include "includes.h"
 
+#define TEST_FILENAME "test_logs/file_helper_test.txt"
+
 using spdlog::details::file_helper;
 
 static void write_with_helper(file_helper &helper, size_t howmany)
@@ -18,7 +20,7 @@ TEST_CASE("file_helper_filename", "[file_helper::filename()]]")
     prepare_logdir();
 
     file_helper helper;
-    std::string target_filename = "test_logs/file_helper_test.txt";
+    spdlog::filename_t target_filename = SPDLOG_FILENAME_T(TEST_FILENAME);
     helper.open(target_filename);
     REQUIRE(helper.filename() == target_filename);
 }
@@ -26,7 +28,7 @@ TEST_CASE("file_helper_filename", "[file_helper::filename()]]")
 TEST_CASE("file_helper_size", "[file_helper::size()]]")
 {
     prepare_logdir();
-    std::string target_filename = "test_logs/file_helper_test.txt";
+    spdlog::filename_t target_filename = SPDLOG_FILENAME_T(TEST_FILENAME);
     size_t expected_size = 123;
     {
         file_helper helper;
@@ -34,13 +36,13 @@ TEST_CASE("file_helper_size", "[file_helper::size()]]")
         write_with_helper(helper, expected_size);
         REQUIRE(static_cast<size_t>(helper.size()) == expected_size);
     }
-    REQUIRE(get_filesize(target_filename) == expected_size);
+    REQUIRE(get_filesize(TEST_FILENAME) == expected_size);
 }
 
 TEST_CASE("file_helper_reopen", "[file_helper::reopen()]]")
 {
     prepare_logdir();
-    std::string target_filename = "test_logs/file_helper_test.txt";
+    spdlog::filename_t target_filename = SPDLOG_FILENAME_T(TEST_FILENAME);
     file_helper helper;
     helper.open(target_filename);
     write_with_helper(helper, 12);
@@ -52,7 +54,7 @@ TEST_CASE("file_helper_reopen", "[file_helper::reopen()]]")
 TEST_CASE("file_helper_reopen2", "[file_helper::reopen(false)]]")
 {
     prepare_logdir();
-    std::string target_filename = "test_logs/file_helper_test.txt";
+    spdlog::filename_t target_filename = SPDLOG_FILENAME_T(TEST_FILENAME);
     size_t expected_size = 14;
     file_helper helper;
     helper.open(target_filename);
@@ -62,16 +64,12 @@ TEST_CASE("file_helper_reopen2", "[file_helper::reopen(false)]]")
     REQUIRE(helper.size() == expected_size);
 }
 
-static void test_split_ext(const char *fname, const char *expect_base, const char *expect_ext)
+static void test_split_ext(const spdlog::filename_t::value_type *fname, const spdlog::filename_t::value_type *expect_base, const spdlog::filename_t::value_type *expect_ext)
 {
     spdlog::filename_t filename(fname);
     spdlog::filename_t expected_base(expect_base);
     spdlog::filename_t expected_ext(expect_ext);
 
-#ifdef _WIN32 // replace folder sep
-    std::replace(filename.begin(), filename.end(), '/', '\\');
-    std::replace(expected_base.begin(), expected_base.end(), '/', '\\');
-#endif
     spdlog::filename_t basename;
     spdlog::filename_t ext;
     std::tie(basename, ext) = file_helper::split_by_extension(filename);
@@ -81,22 +79,22 @@ static void test_split_ext(const char *fname, const char *expect_base, const cha
 
 TEST_CASE("file_helper_split_by_extension", "[file_helper::split_by_extension()]]")
 {
-    test_split_ext("mylog.txt", "mylog", ".txt");
-    test_split_ext(".mylog.txt", ".mylog", ".txt");
-    test_split_ext(".mylog", ".mylog", "");
-    test_split_ext("/aaa/bb.d/mylog", "/aaa/bb.d/mylog", "");
-    test_split_ext("/aaa/bb.d/mylog.txt", "/aaa/bb.d/mylog", ".txt");
-    test_split_ext("aaa/bbb/ccc/mylog.txt", "aaa/bbb/ccc/mylog", ".txt");
-    test_split_ext("aaa/bbb/ccc/mylog.", "aaa/bbb/ccc/mylog.", "");
-    test_split_ext("aaa/bbb/ccc/.mylog.txt", "aaa/bbb/ccc/.mylog", ".txt");
-    test_split_ext("/aaa/bbb/ccc/mylog.txt", "/aaa/bbb/ccc/mylog", ".txt");
-    test_split_ext("/aaa/bbb/ccc/.mylog", "/aaa/bbb/ccc/.mylog", "");
-    test_split_ext("../mylog.txt", "../mylog", ".txt");
-    test_split_ext(".././mylog.txt", ".././mylog", ".txt");
-    test_split_ext(".././mylog.txt/xxx", ".././mylog.txt/xxx", "");
-    test_split_ext("/mylog.txt", "/mylog", ".txt");
-    test_split_ext("//mylog.txt", "//mylog", ".txt");
-    test_split_ext("", "", "");
-    test_split_ext(".", ".", "");
-    test_split_ext("..txt", ".", ".txt");
+    test_split_ext(SPDLOG_FILENAME_T("mylog.txt"), SPDLOG_FILENAME_T("mylog"), SPDLOG_FILENAME_T(".txt"));
+    test_split_ext(SPDLOG_FILENAME_T(".mylog.txt"), SPDLOG_FILENAME_T(".mylog"), SPDLOG_FILENAME_T(".txt"));
+    test_split_ext(SPDLOG_FILENAME_T(".mylog"), SPDLOG_FILENAME_T(".mylog"), SPDLOG_FILENAME_T(""));
+    test_split_ext(SPDLOG_FILENAME_T("/aaa/bb.d/mylog"), SPDLOG_FILENAME_T("/aaa/bb.d/mylog"), SPDLOG_FILENAME_T(""));
+    test_split_ext(SPDLOG_FILENAME_T("/aaa/bb.d/mylog.txt"), SPDLOG_FILENAME_T("/aaa/bb.d/mylog"), SPDLOG_FILENAME_T(".txt"));
+    test_split_ext(SPDLOG_FILENAME_T("aaa/bbb/ccc/mylog.txt"), SPDLOG_FILENAME_T("aaa/bbb/ccc/mylog"), SPDLOG_FILENAME_T(".txt"));
+    test_split_ext(SPDLOG_FILENAME_T("aaa/bbb/ccc/mylog."), SPDLOG_FILENAME_T("aaa/bbb/ccc/mylog."), SPDLOG_FILENAME_T(""));
+    test_split_ext(SPDLOG_FILENAME_T("aaa/bbb/ccc/.mylog.txt"), SPDLOG_FILENAME_T("aaa/bbb/ccc/.mylog"), SPDLOG_FILENAME_T(".txt"));
+    test_split_ext(SPDLOG_FILENAME_T("/aaa/bbb/ccc/mylog.txt"), SPDLOG_FILENAME_T("/aaa/bbb/ccc/mylog"), SPDLOG_FILENAME_T(".txt"));
+    test_split_ext(SPDLOG_FILENAME_T("/aaa/bbb/ccc/.mylog"), SPDLOG_FILENAME_T("/aaa/bbb/ccc/.mylog"), SPDLOG_FILENAME_T(""));
+    test_split_ext(SPDLOG_FILENAME_T("../mylog.txt"), SPDLOG_FILENAME_T("../mylog"), SPDLOG_FILENAME_T(".txt"));
+    test_split_ext(SPDLOG_FILENAME_T(".././mylog.txt"), SPDLOG_FILENAME_T(".././mylog"), SPDLOG_FILENAME_T(".txt"));
+    test_split_ext(SPDLOG_FILENAME_T(".././mylog.txt/xxx"), SPDLOG_FILENAME_T(".././mylog.txt/xxx"), SPDLOG_FILENAME_T(""));
+    test_split_ext(SPDLOG_FILENAME_T("/mylog.txt"), SPDLOG_FILENAME_T("/mylog"), SPDLOG_FILENAME_T(".txt"));
+    test_split_ext(SPDLOG_FILENAME_T("//mylog.txt"), SPDLOG_FILENAME_T("//mylog"), SPDLOG_FILENAME_T(".txt"));
+    test_split_ext(SPDLOG_FILENAME_T(""), SPDLOG_FILENAME_T(""), SPDLOG_FILENAME_T(""));
+    test_split_ext(SPDLOG_FILENAME_T("."), SPDLOG_FILENAME_T("."), SPDLOG_FILENAME_T(""));
+    test_split_ext(SPDLOG_FILENAME_T("..txt"), SPDLOG_FILENAME_T("."), SPDLOG_FILENAME_T(".txt"));
 }

tests/test_file_logging.cpp

@@ -3,10 +3,13 @@
  */
 #include "includes.h"
 
+#define SIMPLE_LOG "test_logs/simple_log"
+#define ROTATING_LOG "test_logs/rotating_log"
+
 TEST_CASE("simple_file_logger", "[simple_logger]]")
 {
     prepare_logdir();
-    std::string filename = "test_logs/simple_log";
+    spdlog::filename_t filename = SPDLOG_FILENAME_T(SIMPLE_LOG);
 
     auto logger = spdlog::create<spdlog::sinks::basic_file_sink_mt>("logger", filename);
     logger->set_pattern("%v");
@@ -15,29 +18,29 @@ TEST_CASE("simple_file_logger", "[simple_logger]]")
     logger->info("Test message {}", 2);
 
     logger->flush();
-    require_message_count(filename, 2);
+    require_message_count(SIMPLE_LOG, 2);
     using spdlog::details::os::default_eol;
-    REQUIRE(file_contents(filename) == fmt::format("Test message 1{}Test message 2{}", default_eol, default_eol));
+    REQUIRE(file_contents(SIMPLE_LOG) == fmt::format("Test message 1{}Test message 2{}", default_eol, default_eol));
 }
 
 TEST_CASE("flush_on", "[flush_on]]")
 {
     prepare_logdir();
-    std::string filename = "test_logs/simple_log";
+    spdlog::filename_t filename = SPDLOG_FILENAME_T(SIMPLE_LOG);
 
     auto logger = spdlog::create<spdlog::sinks::basic_file_sink_mt>("logger", filename);
     logger->set_pattern("%v");
     logger->set_level(spdlog::level::trace);
     logger->flush_on(spdlog::level::info);
     logger->trace("Should not be flushed");
-    REQUIRE(count_lines(filename) == 0);
+    REQUIRE(count_lines(SIMPLE_LOG) == 0);
 
     logger->info("Test message {}", 1);
     logger->info("Test message {}", 2);
 
-    require_message_count(filename, 3);
+    require_message_count(SIMPLE_LOG, 3);
     using spdlog::details::os::default_eol;
-    REQUIRE(file_contents(filename) ==
+    REQUIRE(file_contents(SIMPLE_LOG) ==
             fmt::format("Should not be flushed{}Test message 1{}Test message 2{}", default_eol, default_eol, default_eol));
 }
 
@@ -45,7 +48,7 @@ TEST_CASE("rotating_file_logger1", "[rotating_logger]]")
 {
     prepare_logdir();
     size_t max_size = 1024 * 10;
-    std::string basename = "test_logs/rotating_log";
+    spdlog::filename_t basename = SPDLOG_FILENAME_T(ROTATING_LOG);
     auto logger = spdlog::rotating_logger_mt("logger", basename, max_size, 0);
 
     for (int i = 0; i < 10; ++i)
@@ -54,14 +57,14 @@ TEST_CASE("rotating_file_logger1", "[rotating_logger]]")
     }
 
     logger->flush();
-    require_message_count(basename, 10);
+    require_message_count(ROTATING_LOG, 10);
 }
 
 TEST_CASE("rotating_file_logger2", "[rotating_logger]]")
 {
     prepare_logdir();
     size_t max_size = 1024 * 10;
-    std::string basename = "test_logs/rotating_log";
+    spdlog::filename_t basename = SPDLOG_FILENAME_T(ROTATING_LOG);
 
     {
         // make an initial logger to create the first output file
@@ -83,7 +86,7 @@ TEST_CASE("rotating_file_logger2", "[rotating_logger]]")
 
     logger->flush();
 
-    require_message_count(basename, 10);
+    require_message_count(ROTATING_LOG, 10);
 
     for (int i = 0; i < 1000; i++)
     {
@@ -92,7 +95,6 @@ TEST_CASE("rotating_file_logger2", "[rotating_logger]]")
     }
 
     logger->flush();
-    REQUIRE(get_filesize(basename) <= max_size);
-    auto filename1 = basename + ".1";
-    REQUIRE(get_filesize(filename1) <= max_size);
+    REQUIRE(get_filesize(ROTATING_LOG) <= max_size);
+    REQUIRE(get_filesize(ROTATING_LOG ".1") <= max_size);
 }

tests/test_macros.cpp

@@ -8,11 +8,13 @@
 #error "Invalid SPDLOG_ACTIVE_LEVEL in test. Should be SPDLOG_LEVEL_DEBUG"
 #endif
 
+#define TEST_FILENAME "test_logs/simple_log"
+
 TEST_CASE("debug and trace w/o format string", "[macros]]")
 {
 
     prepare_logdir();
-    std::string filename = "test_logs/simple_log";
+    spdlog::filename_t filename = SPDLOG_FILENAME_T(TEST_FILENAME);
 
     auto logger = spdlog::create<spdlog::sinks::basic_file_sink_mt>("logger", filename);
     logger->set_pattern("%v");
@@ -23,8 +25,8 @@ TEST_CASE("debug and trace w/o format string", "[macros]]")
     logger->flush();
 
     using spdlog::details::os::default_eol;
-    REQUIRE(ends_with(file_contents(filename), fmt::format("Test message 2{}", default_eol)));
-    REQUIRE(count_lines(filename) == 1);
+    REQUIRE(ends_with(file_contents(TEST_FILENAME), fmt::format("Test message 2{}", default_eol)));
+    REQUIRE(count_lines(TEST_FILENAME) == 1);
 
     spdlog::set_default_logger(logger);
 
@@ -32,8 +34,8 @@ TEST_CASE("debug and trace w/o format string", "[macros]]")
     SPDLOG_DEBUG("Test message {}", 4);
     logger->flush();
 
-    require_message_count(filename, 2);
-    REQUIRE(ends_with(file_contents(filename), fmt::format("Test message 4{}", default_eol)));
+    require_message_count(TEST_FILENAME, 2);
+    REQUIRE(ends_with(file_contents(TEST_FILENAME), fmt::format("Test message 4{}", default_eol)));
 }
 
 TEST_CASE("disable param evaluation", "[macros]")

tests/test_pattern_formatter.cpp

@@ -372,7 +372,7 @@ TEST_CASE("clone-custom_formatter", "[pattern_formatter]")
 //
 
 #ifdef _WIN32
-static const char *const test_path = "\\a\\b\\myfile.cpp";
+static const char *const test_path = "\\a\\b\\c/myfile.cpp";
 #else
 static const char *const test_path = "/a/b//myfile.cpp";
 #endif

tests/test_registry.cpp

@@ -103,7 +103,7 @@ TEST_CASE("disable automatic registration", "[registry]")
     spdlog::set_level(log_level);
     // but disable automatic registration
     spdlog::set_automatic_registration(false);
-    auto logger1 = spdlog::create<spdlog::sinks::daily_file_sink_st>(tested_logger_name, "filename", 11, 59);
+    auto logger1 = spdlog::create<spdlog::sinks::daily_file_sink_st>(tested_logger_name, SPDLOG_FILENAME_T("filename"), 11, 59);
     auto logger2 = spdlog::create_async<spdlog::sinks::stdout_color_sink_mt>(tested_logger_name2);
     // loggers should not be part of the registry
     REQUIRE_FALSE(spdlog::get(tested_logger_name));

tests/utils.cpp

@@ -84,7 +84,7 @@ bool ends_with(std::string const &value, std::string const &ending)
 std::size_t count_files(const std::string &folder)
 {
     size_t counter = 0;
-    WIN32_FIND_DATA ffd;
+    WIN32_FIND_DATAA ffd;
 
     // Start iterating over the files in the folder directory.
     HANDLE hFind = ::FindFirstFileA((folder + "\\*").c_str(), &ffd);
@@ -94,7 +94,7 @@ std::size_t count_files(const std::string &folder)
         {
             if (ffd.cFileName[0] != '.')
                 counter++;
-        } while (::FindNextFile(hFind, &ffd) != 0);
+        } while (::FindNextFileA(hFind, &ffd) != 0);
         ::FindClose(hFind);
     }
     else