First Commit

src/dpm_interface.cpp

@@ -0,0 +1,106 @@
+#include "dpm_interface.hpp"
+
+/*
+ *
+ *  DPM Interface methods.  These are wrappers of DPM functionality that are meant to handle user view, turning
+ *  error codes into human-presentable information, etc.  Features are defined internally, these will only ever be
+ *  wrappers of existing features to provide the human/cli interface.
+ *
+ */
+
+// check if the module path exists
+int main_check_module_path(const ModuleLoader& loader)
+{
+    if (auto result = loader.check_module_path(); result != DPMError::SUCCESS) {
+        switch (result) {
+            case DPMError::PATH_NOT_FOUND:
+                std::cerr << "Module path not found: " << loader.get_absolute_module_path() << std::endl;
+            break;
+            case DPMError::PATH_NOT_DIRECTORY:
+                std::cerr << "Not a directory: " << loader.get_absolute_module_path() << std::endl;
+            break;
+            case DPMError::PERMISSION_DENIED:
+                std::cerr << "Permission denied: " << loader.get_absolute_module_path() << std::endl;
+            break;
+            default:
+                std::cerr << "Failed checking module path: " << loader.get_absolute_module_path() << std::endl;
+        }
+        return 1;
+    }
+    return 0;
+}
+
+// list the modules
+int main_list_modules(const ModuleLoader& loader)
+{
+    auto [modules, list_error] = loader.list_available_modules();
+    if (list_error != DPMError::SUCCESS) {
+        switch (list_error) {
+            case DPMError::PERMISSION_DENIED:
+                std::cerr << "Permission denied reading modules from: " << loader.get_absolute_module_path() << std::endl;
+            break;
+            default:
+                std::cerr << "Failed listing modules from: " << loader.get_absolute_module_path() << std::endl;
+        }
+        return 1;
+    }
+
+    std::cout << "Available modules in " << loader.get_absolute_module_path() << ":\n";
+    for (const auto& module : modules) {
+        std::cout << "  " << module << "\n";
+    }
+    return 0;
+}
+
+// parser for populating data structure for supplied arguments
+CommandArgs parse_args(int argc, char* argv[])
+{
+    CommandArgs args;
+
+    static struct option long_options[] = {
+        {"module-path", required_argument, 0, 'm'},
+        {"help", no_argument, 0, 'h'},
+        {0, 0, 0, 0}
+    };
+
+    int opt;
+    int option_index = 0;
+    while ((opt = getopt_long(argc, argv, "m:h", long_options, &option_index)) != -1) {
+        switch (opt) {
+            case 'm':
+                args.module_path = optarg;
+            break;
+            case 'h':
+                std::cout << "Usage: dpm [options] [module-name] [module args...]\n"
+                         << "Options:\n"
+                         << "  -m, --module-path PATH   Path to DPM modules\n"
+                         << "  -h, --help              Show this help message\n"
+                         << "\nIf no module is specified, available modules will be listed.\n";
+            exit(0);
+            case '?':
+                exit(1);
+        }
+    }
+
+    // If there are remaining args, the first one is the module name
+    if (optind < argc) {
+        args.module_name = argv[optind++];
+
+        // Collect all remaining arguments and combine them into a single command string
+        for (int i = optind; i < argc; i++) {
+            if (!args.command.empty()) {
+                args.command += " ";
+            }
+
+            // Handle arguments with spaces by quoting them
+            std::string arg = argv[i];
+            if (arg.find(' ') != std::string::npos) {
+                args.command += "\"" + arg + "\"";
+            } else {
+                args.command += arg;
+            }
+        }
+    }
+
+    return args;
+}