feat: supports unicode paths

src/base/commandlineflags.h

@@ -53,14 +53,15 @@
 #include <string>
 
 #include "config.h"
+#include "../utilities.h"
 
 #ifdef GLOG_USE_GFLAGS
 
-#  include <gflags/gflags.h>
+#include <gflags/gflags.h>
 
 #else
 
-#  include "glog/logging.h"
+#include "glog/logging.h"
 
 #  define DECLARE_VARIABLE(type, shorttype, name, tn) \
     namespace fL##shorttype {                         \
@@ -107,7 +108,20 @@
     }                                                           \
     using fLS::FLAGS_##name
 
-#endif  // GLOG_USE_GFLAGS
+#  define DECLARE_wstring(name)                       \
+  namespace fLS {                                   \
+  extern GLOG_EXPORT std::wstring& FLAGS_##name;    \
+  }                                                 \
+  using fLS::FLAGS_##name
+#   define DEFINE_wstring(name, value, meaning)                            \
+    namespace fLS {                                                     \
+        std::wstring FLAGS_##name##_buf(value);                         \
+        GLOG_EXPORT std::wstring& FLAGS_##name = FLAGS_##name##_buf;    \
+        wchar_t FLAGS_no##name;                                      \
+    }                                                                   \
+    using fLS::FLAGS_##name      
+
+#   endif  // GLOG_USE_GFLAGS
 
 // Define GLOG_DEFINE_* using DEFINE_* . By using these macros, we
 // have GLOG_* environ variables even if we have gflags installed.
@@ -128,10 +142,17 @@
 #define GLOG_DEFINE_string(name, value, meaning) \
   DEFINE_string(name, EnvToString("GLOG_" #name, value), meaning)
 
+#define GLOG_DEFINE_wstring(name, value, meaning) \
+  DEFINE_wstring(name, EnvToString(L"GLOG_", value), meaning)
+
+
 // These macros (could be functions, but I don't want to bother with a .cc
 // file), make it easier to initialize flags from the environment.
 
-#define EnvToString(envname, dflt) (!getenv(envname) ? (dflt) : getenv(envname))
+#define EnvToString(envname, dflt) \
+  (google::logging::internal::getenv(envname).empty() \
+       ? (dflt)                                         \
+       : google::logging::internal::getenv(envname))
 
 #define EnvToBool(envname, dflt) \
   (!getenv(envname) ? (dflt)     \

src/flags.cc

@@ -32,22 +32,46 @@
 
 #include <cstdlib>
 #include <cstring>
-
+#include <array>
 #include "base/commandlineflags.h"
 #include "glog/log_severity.h"
-
+#include "utilities.h"
 namespace {
 
 // Compute the default value for --log_dir
-static const char* DefaultLogDir() {
-  constexpr const char* const names[]{"GOOGLE_LOG_DIR", "TEST_TMPDIR"};
-  for (const char* const name : names) {
-    const char* const env = std::getenv(name);
-    if (env != nullptr && env[0] != '\0') {
-      return env;
+
+ template <class Ch, int N>
+std::basic_string<Ch> DefaultLogDir(const std::array<const Ch*, N>& names) {
+  for (const Ch*  name : names) {
+    auto val = google::logging::internal::getenv(name);
+    if(!val.empty()) {
+      return val;
     }
+
+  }
+  return {};
+ }
+
+template<class Ch>
+struct LogDirEnvVar;
+
+template <>
+struct LogDirEnvVar<char> {
+  constexpr static std::array<const char*, 2> names() noexcept {
+    return {"GOOGLE_LOG_DIR", "TEST_TMPDIR"};
   }
-  return "";
+};
+
+template <>
+struct LogDirEnvVar<wchar_t> {
+  constexpr static std::array<const wchar_t*, 2> names() noexcept {
+    return {L"GOOGLE_LOG_DIR", L"TEST_TMPDIR"};
+  }
+};
+
+template <class Ch>
+decltype(auto) DefaultLogDir() {
+  return DefaultLogDir<Ch, 2>(LogDirEnvVar<Ch>::names());
 }
 
 bool BoolFromEnv(const char* varname, bool defval) {
@@ -123,9 +147,14 @@ GLOG_DEFINE_string(logmailer, "", "Mailer used to send logging email");
 GLOG_DEFINE_int32(logfile_mode, 0664, "Log file mode/permissions.");
 
 GLOG_DEFINE_string(
-    log_dir, DefaultLogDir(),
+    log_dir, DefaultLogDir<char>(),
     "If specified, logfiles are written into this directory instead "
     "of the default logging directory.");
+
+GLOG_DEFINE_wstring(
+    log_wdir, L"",
+    L"If specified, logfiles are written into this directory instead f the default logging directory.");
+
 GLOG_DEFINE_string(log_link, "",
                    "Put additional links to the log "
                    "files in this directory");

src/glog/flags.h

@@ -51,6 +51,7 @@
 #pragma push_macro("DECLARE_VARIABLE")
 #pragma push_macro("DECLARE_bool")
 #pragma push_macro("DECLARE_string")
+#pragma push_macro("DECLARE_wstring")
 #pragma push_macro("DECLARE_int32")
 #pragma push_macro("DECLARE_uint32")
 
@@ -66,6 +67,10 @@
 #  undef DECLARE_string
 #endif
 
+#ifdef DECLARE_wstring
+#  undef DECLARE_wstring
+#endif
+
 #ifdef DECLARE_int32
 #  undef DECLARE_int32
 #endif
@@ -100,8 +105,17 @@
     extern GLOG_EXPORT std::string& FLAGS_##name; \
     }                                             \
     using fLS::FLAGS_##name
+
+#  define DECLARE_wstring(name)                  \
+  namespace fLS {                                \
+  extern GLOG_EXPORT std::wstring& FLAGS_##name; \
+  }                                              \
+  using fLS::FLAGS_##name
+
 #endif
 
+
+
 DECLARE_int32(logemaillevel);
 DECLARE_int32(logcleansecs);
 
@@ -157,6 +171,10 @@ DECLARE_int32(minloglevel);
 // default logging directory.
 DECLARE_string(log_dir);
 
+// If specified, logfiles are written into this directory instead of the
+// default logging directory.
+DECLARE_wstring(log_wdir);
+
 // Set the log file mode.
 DECLARE_int32(logfile_mode);
 
@@ -185,6 +203,7 @@ DECLARE_bool(symbolize_stacktrace);
 #pragma pop_macro("DECLARE_VARIABLE")
 #pragma pop_macro("DECLARE_bool")
 #pragma pop_macro("DECLARE_string")
+#pragma pop_macro("DECLARE_wstring")
 #pragma pop_macro("DECLARE_int32")
 #pragma pop_macro("DECLARE_uint32")
 

src/glog/logging.h

@@ -1493,6 +1493,9 @@ GLOG_EXPORT void FlushLogFilesUnsafe(LogSeverity min_severity);
 GLOG_EXPORT void SetLogDestination(LogSeverity severity,
                                    const char* base_filename);
 
+GLOG_EXPORT void SetLogDestination(LogSeverity severity,
+                                   const wchar_t* base_filename);
+
 //
 // Set the basename of the symlink to the latest log file at a given
 // severity.  If symlink_basename is empty, do not make a symlink.  If
@@ -1501,7 +1504,8 @@ GLOG_EXPORT void SetLogDestination(LogSeverity severity,
 //
 GLOG_EXPORT void SetLogSymlink(LogSeverity severity,
                                const char* symlink_basename);
-
+GLOG_EXPORT void SetLogSymlink(LogSeverity severity,
+                               const wchar_t* symlink_basename);
 //
 // Used to send logs to some other kind of destination
 // Users should subclass LogSink and override send to do whatever they want.
@@ -1557,6 +1561,7 @@ GLOG_EXPORT void RemoveLogSink(LogSink* destination);
 // name.  Thread-safe.
 //
 GLOG_EXPORT void SetLogFilenameExtension(const char* filename_extension);
+GLOG_EXPORT void SetLogFilenameExtension(const wchar_t* filename_extension);
 
 //
 // Make it so that all log messages of at least a particular severity
@@ -1584,7 +1589,8 @@ GLOG_EXPORT void SetEmailLogging(LogSeverity min_severity,
 GLOG_EXPORT bool SendEmail(const char* dest, const char* subject,
                            const char* body);
 
-GLOG_EXPORT const std::vector<std::string>& GetLoggingDirectories();
+GLOG_EXPORT const std::vector<std::string> GetLoggingDirectories();
+GLOG_EXPORT const std::vector<std::wstring>& GetLoggingDirectoriesW();
 
 // Print any fatal message again -- useful to call from signal handler
 // so that the last thing in the output is the fatal message.

src/googletest.h

@@ -70,31 +70,38 @@
 
 using std::map;
 using std::string;
+using std::wstring;
 using std::vector;
 
 namespace google {
 extern void (*g_logging_fail_func)();
-extern void GetExistingTempDirectories(std::vector<std::string>& list);
+extern void GetExistingTempDirectories(std::vector<std::wstring>& list);
 extern int posix_strerror_r(int err, char* buf, size_t len);
 extern std::string StrError(int err);
 }  // namespace google
 
 #undef GLOG_EXPORT
 #define GLOG_EXPORT
 
-static inline string GetTempDir() {
-  vector<string> temp_directories_list;
+static inline wstring GetTempDirW() {
+  vector<wstring> temp_directories_list;
   google::GetExistingTempDirectories(temp_directories_list);
 
   if (temp_directories_list.empty()) {
-    fprintf(stderr, "No temporary directory found\n");
+    fwprintf(stderr, L"No temporary directory found\n");
     exit(EXIT_FAILURE);
   }
 
   // Use first directory from list of existing temporary directories.
   return temp_directories_list.front();
 }
 
+static inline string GetTempDir() { 
+  wstring temp_dir = GetTempDirW();
+  return google::logging::internal::StrConvert<wchar_t, char>(temp_dir);
+}
+
+
 #if defined(GLOG_OS_WINDOWS) && defined(_MSC_VER) && !defined(TEST_SRC_DIR)
 // The test will run in glog/vsproject/<project name>
 // (e.g., glog/vsproject/logging_unittest).