Add code to accept command line arguments
Accepts command line arguments for dbus object path,
dbus service name and an optional systemd unit file
to be called into when the timer expires.
Change-Id: I3fbe59b36d73ed9f28de2596d77e6d2e99371622
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
diff --git a/argument.hpp b/argument.hpp
new file mode 100644
index 0000000..29993d6
--- /dev/null
+++ b/argument.hpp
@@ -0,0 +1,64 @@
+#pragma once
+
+#include <getopt.h>
+#include <map>
+#include <string>
+
+namespace phosphor
+{
+namespace watchdog
+{
+/** @brief Class ArgumentParser - Encapsulates parsing command line options
+ * and populating arguments
+ */
+class ArgumentParser
+{
+ public:
+ ArgumentParser() = delete;
+ ~ArgumentParser() = default;
+ ArgumentParser(const ArgumentParser&) = delete;
+ ArgumentParser& operator=(const ArgumentParser&) = delete;
+ ArgumentParser(ArgumentParser&&) = default;
+ ArgumentParser& operator=(ArgumentParser&&) = default;
+
+ /** @brief Contructs ArgumentParser object
+ *
+ * @param argc - the main function's argc passed as is
+ * @param argv - the main function's argv passed as is
+ * @return Object constructed
+ */
+ ArgumentParser(int argc, char** argv);
+
+ /** @brief Given an option, returns its argument(optarg)
+ *
+ * @param opt - command line option string
+ *
+ * @return argument which is a standard optarg
+ */
+ const std::string& operator[](const std::string& opt);
+
+ /** @brief Displays usage
+ *
+ * @param argv - the main function's argv passed as is
+ */
+ static void usage(char** argv);
+
+ /** @brief Set to 'true' when an option is passed */
+ static const std::string trueString;
+
+ /** @brief Set to '' when an option is not passed */
+ static const std::string emptyString;
+
+ private:
+ /** @brief Option to argument mapping */
+ std::map<const std::string, std::string> arguments;
+
+ /** @brief Array of struct options as needed by getopt_long */
+ static const option options[];
+
+ /** @brief optstring as needed by getopt_long */
+ static const char* optionStr;
+};
+
+} // namespace watchdog
+} // namespace phosphor