Add GetTempPath() to util

src/util.cpp

@@ -1310,6 +1310,28 @@ boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate)
 }
 #endif
 
+boost::filesystem::path GetTempPath() {
+#if BOOST_FILESYSTEM_VERSION == 3
+    return boost::filesystem::temp_directory_path();
+#else
+    // TODO: remove when we don't support filesystem v2 anymore
+    boost::filesystem::path path;
+#ifdef WIN32
+    char pszPath[MAX_PATH] = "";
+
+    if (GetTempPathA(MAX_PATH, pszPath))
+        path = boost::filesystem::path(pszPath);
+#else
+    path = boost::filesystem::path("/tmp");
+#endif
+    if (path.empty() || !boost::filesystem::is_directory(path)) {
+        printf("GetTempPath(): failed to find temp path\n");
+        return boost::filesystem::path("");
+    }
+    return path;
+#endif
+}
+
 void runCommand(std::string strCommand)
 {
     int nErr = ::system(strCommand.c_str());

src/util.h

@@ -207,6 +207,7 @@ void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map
 #ifdef WIN32
 boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate = true);
 #endif
+boost::filesystem::path GetTempPath();
 void ShrinkDebugFile();
 int GetRandInt(int nMax);
 uint64 GetRand(uint64 nMax);