Added a janky system for storing commands

src/sandbox.c

@@ -7,6 +7,36 @@
 #include <pwd.h>
 #include <unistd.h>
 
+#define ALIAS(...) \
+	(const char*[]) { __VA_ARGS__, NULL }
+
+#define ALIASES(...) \
+	(const char**[]) { __VA_ARGS__, NULL }
+
+#define ARGUMENTS(...)   \
+	(const Argument[]) { \
+		__VA_ARGS__, {}  \
+	}
+
+#define OPTIONS(...)    \
+	(const Option[]) {  \
+		__VA_ARGS__, {} \
+	}
+
+Command COMMANDS[] = {
+	// Help
+	{
+		.handler = command_help,
+		.description = "Display help information.",
+		.details = "Display help information about the available commands and their options.",
+		.aliases = ALIASES(ALIAS("help")),
+		.arguments = ARGUMENTS({.name = "command", .required = false, .description = "The command to display help information for."},
+							   {.name = "test", .required = false, .description = "Test."}),
+		.options = OPTIONS({.aliases = ALIASES(ALIAS("--help"), ALIAS("-h")), .arguments = NULL, .description = "Display help information."},
+						   {.aliases = ALIASES(ALIAS("--test")), .arguments = NULL, .description = "Test."}),
+	},
+};
+
 int main(int argc, char** argv) {
 	// Ensure the sandbox user exists
 	struct passwd* pw = getpwnam(SANDBOX_USER);
@@ -35,4 +65,8 @@ int main(int argc, char** argv) {
 	}
 
 	// TODO: Parse commands from the command line
-}
+}
+
+int command_help(int argc, char* argv[]) {
+	return EXIT_SUCCESS;
+}

src/sandbox.h

@@ -5,4 +5,29 @@
 #define SANDBOX_VERSION "0.1.4"
 #define SANDBOX_USER "sandbox"
 
+typedef struct {
+	const char* name;
+	const bool required;
+	const char* description;
+} Argument;
+
+typedef struct {
+	const char*** aliases;
+	const Argument* arguments;
+	const char* description;
+} Option;
+
+typedef struct {
+	int (*const handler)(int argc, char* argv[]);
+	const char*** aliases;
+	const Argument* arguments;
+	const Option* options;
+	const char* description;
+	const char* details;
+} Command;
+
+extern Command COMMANDS[];
+
 int main(int argc, char** argv);
+
+int command_help(int argc, char* argv[]);

src/utils.c

@@ -12,7 +12,7 @@
 #include <fcntl.h>
 #include <openssl/md5.h>
 
-char _error_buffer[ERROR_BUFFER_SIZE];
+char ERROR_BUFFER[ERROR_BUFFER_SIZE];
 
 result_t success(void) {
 	return EXIT_SUCCESS;
@@ -23,7 +23,7 @@ result_t failure(const char* format, ...) {
 	va_start(args, format);
 
 	// Print the error message into the error buffer
-	vsnprintf(_error_buffer, ERROR_BUFFER_SIZE, format, args);
+	vsnprintf(ERROR_BUFFER, ERROR_BUFFER_SIZE, format, args);
 
 	va_end(args);
 
@@ -31,7 +31,7 @@ result_t failure(const char* format, ...) {
 }
 
 const char* error(void) {
-	return _error_buffer;
+	return ERROR_BUFFER;
 }
 
 result_t format(char** _str, const char* format, ...) {

src/utils.h

@@ -6,7 +6,7 @@
 
 #define ERROR_BUFFER_SIZE 4096
 
-extern char _error_buffer[];
+extern char ERROR_BUFFER[];
 
 typedef int result_t;