Add --run-once option to delete the output file after running it (#1295)

Add `run-once` option to delete the output file after running it

releasenotes.md

@@ -21,6 +21,7 @@
 - && doesn't work correctly with lambdas #1279.
 - Fix incorrect override of optimization levels when using projects.
 - Add experimental `@noalias` attribute.
+- Add a `--run-once` option to delete the output file after running it.
 
 ### Fixes
 

src/build/build.h

@@ -410,6 +410,7 @@ typedef struct BuildOptions_
 	bool read_stdin;
 	bool print_output;
 	bool print_input;
+	bool run_once;
 	const char *panicfn;
 	const char *benchfn;
 	const char *testfn;
@@ -507,6 +508,7 @@ typedef struct
 	const char *asm_file_dir;
 	const char *script_dir;
 	bool run_after_compile;
+	bool delete_after_run;
 	bool generate_benchmark_runner;
 	bool generate_test_runner;
 	bool benchmark_output;
@@ -651,4 +653,4 @@ bool command_accepts_files(CompilerCommand command);
 void update_build_target_with_opt_level(BuildTarget *target, OptimizationSetting level);
 void create_project(BuildOptions *build_options);
 void create_library(BuildOptions *build_options);
-void resolve_libraries(BuildTarget *build_target);
+void resolve_libraries(BuildTarget *build_target);

src/build/build_options.c

@@ -90,6 +90,7 @@ static void usage(void)
 	PRINTF("  --about                    - Prints a short description of C3.");
 	PRINTF("  --symtab <value>           - Sets the preferred symtab size.");
 	PRINTF("  --max-mem <value>          - Sets the preferred max memory size.");
+	PRINTF("  --run-once                 - After running the output file, delete it immediately.");
 	PRINTF("  -V --version               - Print version information.");
 	PRINTF("  -E                         - Lex only.");
 	PRINTF("  -P                         - Only parse and output the AST as JSON.");
@@ -130,7 +131,6 @@ static void usage(void)
 	PRINTF("  -g                         - Emit debug info.");
 	PRINTF("  -g0                        - Emit no debug info.");
 	PRINTF("");
-	PRINTF("");
 	PRINTF("  -l <library>               - Link with the library provided.");
 	PRINTF("  -L <library dir>           - Append the directory to the linker search paths.");
 	PRINTF("  -z <argument>              - Send the <argument> as a parameter to the linker.");
@@ -675,6 +675,10 @@ static void parse_option(BuildOptions *options)
 				print_version();
 				exit_compiler(COMPILER_SUCCESS_EXIT);
 			}
+			if (match_longopt("run-once")) {
+				options->run_once = true;
+				return;
+			}
 			if ((argopt = match_argopt("fp-math")))
 			{
 				options->fp_math = (FpOpt)parse_multi_option(argopt, 3, fp_math);

src/build/builder.c

@@ -212,6 +212,7 @@ static void update_build_target_from_options(BuildTarget *target, BuildOptions *
 		case COMMAND_COMPILE_RUN:
 		case COMMAND_CLEAN_RUN:
 			target->run_after_compile = true;
+			target->delete_after_run = options->run_once;
 			break;
 		case COMMAND_COMPILE_ONLY:
 			target->type = TARGET_TYPE_OBJECT_FILES;
@@ -447,4 +448,4 @@ void init_build_target(BuildTarget *target, BuildOptions *options)
 		if (!file_is_dir(target->build_dir)) error_exit("Expected '%s' to be a directory.", target->build_dir);
 	}
 	load_library_files();
-}
+}

src/compiler/compiler.c

@@ -652,6 +652,12 @@ void compiler_compile(void)
 			printf("Launching %s...\n", name);
 
 			int ret = system(name);
+
+			if (active_target.delete_after_run)
+			{
+				file_delete_file(name);
+			}
+
 #if PLATFORM_POSIX
 			if (WIFEXITED(ret))
 			{
@@ -1311,4 +1317,4 @@ int find_padding_length(const char** arr, const int count)
 	}
 	width += 2;
 	return width;
-}
+}