Add 'CPP/commandParser.cpp'

CPP/commandParser.cpp

@@ -0,0 +1,84 @@
+// Example program
+// work in progress 2022.08.07
+#include <iostream>
+#include <string>
+
+enum cmd_parser_mode_t{
+    PARSING_DEVICE,
+    CHECK_DEVICE,
+    PARSING_COMMAND,
+    CHECK_COMMAND,
+    PARSING_VALUE,
+    CHECK_VALUE,
+    COMMAND_VALID
+};
+
+void device_check(const std::string cmd)
+{
+    std::cout << cmd << std::endl;
+}
+
+
+
+void cmd_parser(const std::string &cmd)
+{
+    cmd_parser_mode_t parser_mode = PARSING_DEVICE;
+    std::string::size_type pos;
+    
+    for(uint32_t i = 0; i < cmd.length(); i++) {  
+        switch(parser_mode) {
+            case PARSING_DEVICE:
+                std::cout << parser_mode << std::endl;
+                
+                pos = cmd.find('_');
+                if (pos != std::string::npos)
+                {
+                    device_check(cmd.substr(0, pos));
+                }
+                else
+                {
+                    return;
+                }
+                parser_mode = CHECK_DEVICE;
+                break;
+            case CHECK_DEVICE:
+                std::cout << parser_mode << std::endl;
+                parser_mode = PARSING_COMMAND;
+                break;
+            case PARSING_COMMAND:
+                std::cout << parser_mode << std::endl;
+                parser_mode = CHECK_COMMAND;
+                break;
+            case CHECK_COMMAND:
+                std::cout << parser_mode << std::endl;
+                parser_mode = PARSING_VALUE;
+                break;
+            case PARSING_VALUE:
+                std::cout << parser_mode << std::endl;
+                parser_mode = CHECK_VALUE;
+                break;
+            case CHECK_VALUE:
+                std::cout << parser_mode << std::endl;
+                parser_mode = COMMAND_VALID;
+                break;
+            case COMMAND_VALID:
+                std::cout << parser_mode << std::endl;
+                break;
+            default:
+                return;
+                break;
+        };
+    }
+}
+
+
+
+int main()
+{
+    std::string cmd_in = "DEVICE_COMMAND_VALUE";
+    
+    cmd_parser(cmd_in);
+
+    return 0;
+}
+