treewide: comply with the OpenBMC style guidelines

The guidelines say cpp source code filenames should be lower_snake_case:
https://github.com/openbmc/docs/blob/master/cpp-style-and-conventions.md#files

Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Change-Id: Ia04017b0eb9a65ce1303af5b6dc36e730410fd91
diff --git a/include/utils.hpp b/include/utils.hpp
new file mode 100644
index 0000000..bc8ac1b
--- /dev/null
+++ b/include/utils.hpp
@@ -0,0 +1,165 @@
+/*
+// Copyright (c) 2017 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+*/
+/// \file utils.hpp
+
+#pragma once
+
+#include <boost/container/flat_map.hpp>
+#include <nlohmann/json.hpp>
+#include <sdbusplus/asio/connection.hpp>
+#include <sdbusplus/exception.hpp>
+
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+
+constexpr const char* configurationOutDir = "/var/configuration/";
+constexpr const char* versionHashFile = "/var/configuration/version";
+constexpr const char* versionFile = "/etc/os-release";
+
+extern boost::asio::io_context io;
+
+using DBusValueVariant =
+    std::variant<std::string, int64_t, uint64_t, double, int32_t, uint32_t,
+                 int16_t, uint16_t, uint8_t, bool, std::vector<uint8_t>>;
+using DBusInterface = boost::container::flat_map<std::string, DBusValueVariant>;
+using DBusObject = boost::container::flat_map<std::string, DBusInterface>;
+using MapperGetSubTreeResponse =
+    boost::container::flat_map<std::string, DBusObject>;
+
+namespace properties
+{
+constexpr const char* interface = "org.freedesktop.DBus.Properties";
+constexpr const char* get = "Get";
+} // namespace properties
+
+namespace power
+{
+const static constexpr char* busname = "xyz.openbmc_project.State.Host";
+const static constexpr char* interface = "xyz.openbmc_project.State.Host";
+const static constexpr char* path = "/xyz/openbmc_project/state/host0";
+const static constexpr char* property = "CurrentHostState";
+} // namespace power
+
+bool findFiles(const std::filesystem::path& dirPath,
+               const std::string& matchString,
+               std::vector<std::filesystem::path>& foundPaths);
+bool findFiles(const std::vector<std::filesystem::path>&& dirPaths,
+               const std::string& matchString,
+               std::vector<std::filesystem::path>& foundPaths);
+
+bool getI2cDevicePaths(
+    const std::filesystem::path& dirPath,
+    boost::container::flat_map<size_t, std::filesystem::path>& busPaths);
+
+bool validateJson(const nlohmann::json& schemaFile,
+                  const nlohmann::json& input);
+
+bool isPowerOn(void);
+void setupPowerMatch(const std::shared_ptr<sdbusplus::asio::connection>& conn);
+struct DBusInternalError final : public sdbusplus::exception_t
+{
+    const char* name() const noexcept override
+    {
+        return "org.freedesktop.DBus.Error.Failed";
+    }
+    const char* description() const noexcept override
+    {
+        return "internal error";
+    }
+    const char* what() const noexcept override
+    {
+        return "org.freedesktop.DBus.Error.Failed: "
+               "internal error";
+    }
+
+    int get_errno() const noexcept override
+    {
+        return EACCES;
+    }
+};
+
+inline bool fwVersionIsSame(void)
+{
+    std::ifstream version(versionFile);
+    if (!version.good())
+    {
+        std::cerr << "Can't read " << versionFile << "\n";
+        return false;
+    }
+
+    std::string versionData;
+    std::string line;
+    while (std::getline(version, line))
+    {
+        versionData += line;
+    }
+
+    std::string expectedHash =
+        std::to_string(std::hash<std::string>{}(versionData));
+
+    std::filesystem::create_directory(configurationOutDir);
+    std::ifstream hashFile(versionHashFile);
+    if (hashFile.good())
+    {
+
+        std::string hashString;
+        hashFile >> hashString;
+
+        if (expectedHash == hashString)
+        {
+            return true;
+        }
+        hashFile.close();
+    }
+
+    std::ofstream output(versionHashFile);
+    output << expectedHash;
+    return false;
+}
+
+std::optional<std::string> templateCharReplace(
+    nlohmann::json::iterator& keyPair, const DBusObject& object,
+    const size_t index,
+    const std::optional<std::string>& replaceStr = std::nullopt);
+
+std::optional<std::string> templateCharReplace(
+    nlohmann::json::iterator& keyPair, const DBusInterface& interface,
+    const size_t index,
+    const std::optional<std::string>& replaceStr = std::nullopt);
+
+inline bool deviceHasLogging(const nlohmann::json& json)
+{
+    auto logging = json.find("Logging");
+    if (logging != json.end())
+    {
+        auto ptr = logging->get_ptr<const std::string*>();
+        if (ptr)
+        {
+            if (*ptr == "Off")
+            {
+                return false;
+            }
+        }
+    }
+    return true;
+}
+
+/// \brief Match a Dbus property against a probe statement.
+/// \param probe the probe statement to match against.
+/// \param dbusValue the property value being matched to a probe.
+/// \return true if the dbusValue matched the probe otherwise false.
+bool matchProbe(const nlohmann::json& probe, const DBusValueVariant& dbusValue);