refactor for better support with ch341 and other unreliable rs232 adapters

sources/inverter-cli/inputparser.cpp

@@ -0,0 +1,33 @@
+// @author iain
+
+#include <algorithm>
+#include <string>
+#include <vector>
+#include "inputparser.h"
+
+// This class simply finds cmd line args and parses them for use in a program.
+// It is not posix compliant and wont work with args like:   ./program -xf filename
+// You must place each arg after its own seperate dash like: ./program -x -f filename
+
+InputParser::InputParser (int &argc, char **argv) {
+    for (int i=1; i < argc; ++i)
+        this->tokens.push_back(std::string(argv[i]));
+}
+
+const std::string& InputParser::getCmdOption(const std::string &option) const {
+    std::vector<std::string>::const_iterator itr;
+    itr =  std::find(this->tokens.begin(), this->tokens.end(), option);
+    if (itr != this->tokens.end() && ++itr != this->tokens.end())
+    {
+        return *itr;
+    }
+    static const std::string empty_string("");
+    return empty_string;
+}
+
+bool InputParser::cmdOptionExists(const std::string &option) const {
+    return std::find(this->tokens.begin(), this->tokens.end(), option)
+           != this->tokens.end();
+}
+
+std::vector <std::string> tokens;