Cleanup, remove unused code from duk_cmdline

examples/cmdline/duk_cmdline.c

@@ -40,14 +40,7 @@
 #define  MEM_LIMIT_HIGH     (2047*1024*1024)  /* ~2 GB */
 #define  LINEBUF_SIZE       65536
 
-/* FIXME: additional modules should probably only be in some separate tool? */
-#if 0
-extern void duk_ncurses_register(duk_context *ctx);
-extern void duk_socket_register(duk_context *ctx);
-extern void duk_fileio_register(duk_context *ctx);
-#endif
-
-int interactive_mode = 0;
+static int interactive_mode = 0;
 
 #ifndef NO_RLIMIT
 static void set_resource_limits(rlim_t mem_limit_value) {
@@ -119,52 +112,40 @@ static void print_error(duk_context *ctx, FILE *f) {
 	duk_pop(ctx);
 }
 
-int wrapped_compile_execute(duk_context *ctx) {
+static int wrapped_compile_execute(duk_context *ctx) {
 	int comp_flags;
 
+	/* XXX: Here it'd be nice to get some stats for the compilation result
+	 * when a suitable command line is given (e.g. code size, constant
+	 * count, function count.  These are available internally but not through
+	 * the public API.
+	 */
+
 	comp_flags = 0;
 	duk_compile(ctx, comp_flags);
 
-#if 0
-	/* FIXME: something similar with public API */
-	if (interactive_mode) {
-		duk_hcompiledfunction *f = (duk_hcompiledfunction *) duk_get_hobject(ctx, -1);
-
-		if (f && DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) f)) {
-			fprintf(stdout, "[bytecode length %d opcodes, registers %d, constants %d, inner functions %d]\n",
-				(int) DUK_HCOMPILEDFUNCTION_GET_CODE_COUNT(f),
-				(int) f->nregs,
-				(int) DUK_HCOMPILEDFUNCTION_GET_CONSTS_COUNT(f),
-				(int) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(f));
-			fflush(stdout);
-		} else {
-			fprintf(stdout, "[invalid compile result]\n");
-			fflush(stdout);
-		}
-	}
-#endif
-
 	duk_push_global_object(ctx);  /* 'this' binding */
 	duk_call_method(ctx, 0);
 
 	if (interactive_mode) {
 		/*
-		 *  In interactive mode, write to stdout so output won't interleave as easily.
+		 *  In interactive mode, write to stdout so output won't
+		 *  interleave as easily.
 		 *
-		 *  NOTE: the ToString() coercion may fail in some cases; for instance,
-		 *  if you evaluate:
+		 *  NOTE: the ToString() coercion may fail in some cases;
+		 *  for instance, if you evaluate:
 		 *
-		 *    ( {valueOf: function() {return {}}, toString: function() {return {}}});
+		 *    ( {valueOf: function() {return {}},
+		 *       toString: function() {return {}}});
 		 *
 		 *  The error is:
 		 *
 		 *    TypeError: failed to coerce with [[DefaultValue]]
 		 *            duk_api.c:1420
 		 *
-		 *  These errors are caught and printed out as errors although
-		 *  the errors are not generated by user code as such.  Changing
-		 *  duk_to_string() to duk_safe_to_string() would avoid these
-		 *  errors.
+		 *  These are handled now by the caller which also has stack
+		 *  trace printing support.  User code can print out errors
+		 *  safely using duk_safe_to_string().
 		 */
 
 		fprintf(stdout, "= %s\n", duk_to_string(ctx, -1));
@@ -180,7 +161,7 @@ int wrapped_compile_execute(duk_context *ctx) {
 	return 0;
 }
 
-int handle_fh(duk_context *ctx, FILE *f, const char *filename) {
+static int handle_fh(duk_context *ctx, FILE *f, const char *filename) {
 	char *buf = NULL;
 	int len;
 	int got;
@@ -231,7 +212,7 @@ int handle_fh(duk_context *ctx, FILE *f, const char *filename) {
 	goto cleanup;
 }
 
-int handle_file(duk_context *ctx, const char *filename) {
+static int handle_file(duk_context *ctx, const char *filename) {
 	FILE *f = NULL;
 	int retval;
 
@@ -252,7 +233,7 @@ int handle_file(duk_context *ctx, const char *filename) {
 }
 
 #ifdef NO_READLINE
-int handle_interactive(duk_context *ctx) {
+static int handle_interactive(duk_context *ctx) {
 	const char *prompt = "duk> ";
 	char *buffer = NULL;
 	int retval = 0;
@@ -317,7 +298,7 @@ int handle_interactive(duk_context *ctx) {
 	return retval;
 }
 #else  /* NO_READLINE */
-int handle_interactive(duk_context *ctx) {
+static int handle_interactive(duk_context *ctx) {
 	const char *prompt = "duk> ";
 	char *buffer = NULL;
 	int retval = 0;
@@ -435,11 +416,6 @@ int main(int argc, char *argv[]) {
 	 */
 
 	ctx = duk_create_heap_default();
-#if 0
-	duk_ncurses_register(ctx);
-	duk_socket_register(ctx);
-	duk_fileio_register(ctx);
-#endif
 
 	for (i = 1; i < argc; i++) {
 		char *arg = argv[i];