bugfix + part of the new command arg system

core/src/command_args.cpp

@@ -0,0 +1,103 @@
+#include "command_args.h"
+
+int CommandArgsParser::parse(int argc, char* argv[]) {
+    for (int i = 1; i < argc; i++) {
+        std::string arg = argv[i];
+        
+        // Check for long and short name arguments
+        if (!arg.rfind("--", 0)) {
+            arg = arg.substr(2);
+        }
+        else if (!arg.rfind("-", 0)) {
+            if (aliases.find(arg[1]) == aliases.end()) {
+                printf("Unknown argument\n");
+                showHelp();
+                return -1;
+            }
+            arg = aliases[arg[1]];
+        }
+        else {
+            printf("Invalid argument\n");
+            showHelp();
+            return -1;
+        }
+
+        // Make sure the argument exists
+        if (args.find(arg) == args.end()) {
+            printf("Unknown argument\n");
+            showHelp();
+            return -1;
+        }
+
+        // Parse depending on type
+        CLIArg& carg = args[arg];
+        
+        // If not void, make sure an argument is available and retrieve it
+        if (carg.type != CLI_ARG_TYPE_VOID && i + 1 >= argc) {
+            printf("Missing argument\n");
+            showHelp();
+            return -1;
+        }
+
+        // Parse void since arg won't be needed
+        if (carg.type == CLI_ARG_TYPE_VOID) {
+            carg.bval = true;
+            continue;
+        }
+
+        // Parse types that require parsing
+        arg = argv[++i];
+        if (carg.type == CLI_ARG_TYPE_BOOL) {
+            // Enforce lower case
+            for (int i = 0; i < arg.size(); i++) { arg[i] = std::tolower(arg[i]); }
+
+            if (arg == "true" || arg == "on" || arg == "1") {
+                carg.bval = true;
+            }
+            else if (arg == "false" || arg == "off" || arg == "0") {
+                carg.bval = true;
+            }
+            else {
+                printf("Invald argument, expected bool (true, false, on, off, 1, 0)\n");
+                showHelp();
+                return -1;
+            }
+        }
+        else if (carg.type == CLI_ARG_TYPE_INT) {
+            try {
+                carg.ival = std::stoi(arg);
+            }
+            catch (std::exception e) {
+                printf("Invald argument, failed to parse integer\n");
+                showHelp();
+                return -1;
+            }
+        }
+        else if (carg.type == CLI_ARG_TYPE_FLOAT) {
+            try {
+                carg.fval = std::stod(arg);
+            }
+            catch (std::exception e) {
+                printf("Invald argument, failed to parse float\n");
+                showHelp();
+                return -1;
+            }
+        }
+        else if (carg.type == CLI_ARG_TYPE_STRING) {
+            carg.sval = arg;
+        }
+    }
+
+    return 0;
+}
+
+void CommandArgsParser::showHelp() {
+    for (auto const& [ln, arg] : args) {
+        if (arg.alias) {
+            printf("-%c\t--%s\t\t%s\n", arg.alias, ln.c_str(), arg.description.c_str());
+        }
+        else {
+            printf("  \t--%s\t\t%s\n", ln.c_str(), arg.description.c_str());
+        }
+    }
+}