dbus: Move findSensors to dbus util

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I2ba4d3c430200eb58cb4364dcce694a080531846
diff --git a/dbus/dbusconfiguration.cpp b/dbus/dbusconfiguration.cpp
index f9d7790..90c2472 100644
--- a/dbus/dbusconfiguration.cpp
+++ b/dbus/dbusconfiguration.cpp
@@ -30,7 +30,6 @@
 #include <functional>
 #include <iostream>
 #include <list>
-#include <regex>
 #include <set>
 #include <unordered_map>
 #include <variant>
@@ -88,22 +87,6 @@
     return retString;
 }
 
-bool findSensors(const std::unordered_map<std::string, std::string>& sensors,
-                 const std::string& search,
-                 std::vector<std::pair<std::string, std::string>>& matches)
-{
-    std::smatch match;
-    std::regex reg(search + '$');
-    for (const auto& sensor : sensors)
-    {
-        if (std::regex_search(sensor.first, match, reg))
-        {
-            matches.push_back(sensor);
-        }
-    }
-    return matches.size() > 0;
-}
-
 // this function prints the configuration into a form similar to the cpp
 // generated code to help in verification, should be turned off during normal
 // use
diff --git a/dbus/dbusutil.cpp b/dbus/dbusutil.cpp
index 7545eed..6cdad14 100644
--- a/dbus/dbusutil.cpp
+++ b/dbus/dbusutil.cpp
@@ -4,9 +4,13 @@
 #include <cstdint>
 #include <iostream>
 #include <map>
+#include <regex>
 #include <set>
 #include <string>
+#include <unordered_map>
+#include <utility>
 #include <variant>
+#include <vector>
 
 using Property = std::string;
 using Value = std::variant<int64_t, double, std::string, bool>;
@@ -15,6 +19,22 @@
 namespace pid_control
 {
 
+bool findSensors(const std::unordered_map<std::string, std::string>& sensors,
+                 const std::string& search,
+                 std::vector<std::pair<std::string, std::string>>& matches)
+{
+    std::smatch match;
+    std::regex reg(search + '$');
+    for (const auto& sensor : sensors)
+    {
+        if (std::regex_search(sensor.first, match, reg))
+        {
+            matches.push_back(sensor);
+        }
+    }
+    return matches.size() > 0;
+}
+
 std::string getSensorPath(const std::string& type, const std::string& id)
 {
     std::string layer = type;
diff --git a/dbus/dbusutil.hpp b/dbus/dbusutil.hpp
index 8bd2824..420c8fb 100644
--- a/dbus/dbusutil.hpp
+++ b/dbus/dbusutil.hpp
@@ -2,6 +2,9 @@
 
 #include <stdexcept>
 #include <string>
+#include <unordered_map>
+#include <utility>
+#include <vector>
 
 namespace pid_control
 {
@@ -28,4 +31,8 @@
 void scaleSensorReading(const double min, const double max, double& value);
 bool validType(const std::string& type);
 
+bool findSensors(const std::unordered_map<std::string, std::string>& sensors,
+                 const std::string& search,
+                 std::vector<std::pair<std::string, std::string>>& matches);
+
 } // namespace pid_control