--- a/Makefile	Mon Jan 17 17:02:16 2022 -0500
+++ b/Makefile	Thu Jan 20 23:00:18 2022 -0500
@@ -1,5 +1,6 @@
-CC=gcc
-CC_FLAGS=-static -O2
+CC=clang  # clang cause gcc throws compiling errors that i don't know how to fix
+CC_FLAGS=-Wall -static -O2
+LD_FLAGS=-ffunction-sections
 
 %.o : %.c
 	$(CC) -c $(CC_FLAGS) $< -o $@

--- a/msvpvf.c	Mon Jan 17 17:02:16 2022 -0500
+++ b/msvpvf.c	Thu Jan 20 23:00:18 2022 -0500
@@ -1,8 +1,5 @@
 /* Movie Studio / Vegas Pro version spoofer 
  * by Paper
- *
- * You should have received a copy of the MIT License along with this program.
- * If not, you can access it at https://opensource.org/licenses/MIT.
 */
 
 #include <stdio.h>
@@ -14,7 +11,7 @@
 #if __STDC_VERSION__ >= 199901L
 #include <stdbool.h>
 #else
-typedef enum { false, true } bool; /* less than C99 */
+typedef enum { false, true } bool;  /* less than C99 */
 #endif
 #ifdef _MSC_VER
 #define strdup(p) _strdup(p)
@@ -28,6 +25,17 @@
 	{"help", 0, NULL, 'h'}
 };
 
+char* strremove(char* str, const char* sub) {
+    size_t len = strlen(sub);
+    if (len > 0) {
+        char *p = str;
+        while ((p = strstr(p, sub)) != NULL) {
+            memmove(p, p + len, strlen(p + len) + 1);
+        }
+    }
+    return str;
+}
+
 void set_data(unsigned char magic[], uint16_t version, FILE* target) {
 	int i;
 	fseek(target, 0x46, SEEK_SET);
@@ -38,7 +46,7 @@
 	}
 }
 
-int copy_file(const char* source_file, const char* target_file) {
+int copy_file(char* source_file, char* target_file) {
 	FILE *source, *target;
 
 	source = fopen(source_file, "rb");
@@ -64,56 +72,94 @@
 }
 
 int main(int argc, char *argv[]) {
-	int c, temp, option_index = 0;
-	char buf[127];
+	int c, option_index = 0;
+	unsigned char magic[16];
+	FILE* outfile;
 	struct arguments {
-		const char* input;
-		const char* output;
-		uint16_t version;
-		const char* type;
+		char input[128];
+		char output[128];
+		int version;
+		char type[128];
 	} args;
-	args.input = " ";
-	args.output = " ";
+	strcpy(args.input, " ");
+	strcpy(args.output, " ");
 	args.version = -1;
-	args.type = " ";
+	strcpy(args.type, " ");
 
 	while ((c = getopt_long(argc, argv, "i:o:v:t:h", options_long, &option_index)) != -1)
 		switch(c) {
 			case 'i':
-				args.input = strdup(optarg);
+				strncpy(args.input, optarg, sizeof(args.input)-1);  /* subtract 1 to make sure it's "null-safe" */
 				break;
 			case 'o':
-				args.output = strdup(optarg);
+				strncpy(args.output, optarg, sizeof(args.input)-1);
 				break;
 			case 'v':
-				args.version = abs(atoi(strdup(optarg))); /* abs() for possible negative inputs */
+				args.version = abs(atoi(strdup(optarg)));  /* abs() for possible negative inputs */
 				break;
 			case 't':
-				args.type = strdup(optarg);
+				strncpy(args.type, optarg, sizeof(args.input)-1);
 				break;
 			case 'h':
 			default:
-				fprintf(stderr, "msvpvf by Paper\nusage: %s -i infile [-o outfile] -v version -t [vf, veg]", argv[0]);
-				return 1;
+				printf("msvpvf by Paper\nusage: %s (-i/--input) infile [(-o/--output) outfile] (-v/--version) version (-t/--type) [vf, veg]", argv[0]);
+				return 0;
+		}
+	int* ptr = &args.version;
+	if (argc <= 5) {
+		if (strcmp(args.input, " ") == 0) {
+			printf("Input file name?\n");
+			fflush(stdout);
+			fgets(args.input, sizeof(args.input)-1, stdin);
+			args.input[strcspn(args.input, "\r\n")] = 0;
+		}
+		if (strcmp(args.output, " ") == 0) {
+			char* temp;
+			temp = strncat(strncat("PRO_V", (char*)(intptr_t)args.version, 7), args.input, 127);
+			char* file_extension = strrchr(args.input, ('.'));  /* this won't work if your path is /path.to/file but why would you do that in the first place */
+			strncpy(args.output, strncat(strncat(strremove(temp, file_extension), ".", 127), args.type, 127), 127);
 		}
-	copy_file(args.input, args.output);
-	FILE* outfile = fopen(args.output, "r+b");
+		if (args.version == -1) {
+			printf("What version would you like to convert to?\n");
+			fflush(stdout);
+			scanf("%d", ptr);
+		}
+		if (strcmp(args.type, " ") == 0) {
+			printf("Which type of project file would you like to use?[veg/vf]:\n");
+			fflush(stdout);
+			fgets(args.type, sizeof(args.input)-1, stdin);
+			args.type[strcspn(args.type, "\r\n")] = 0;
+		}
+		if (argc == 1) {
+			printf("msvpvf by Paper\nusage: %s -i infile [-o outfile] -v version -t [vf, veg]", argv[0]);
+			return 0;
+		}
+	}
+	if (access(args.input, F_OK) != 0) {  /* input file doesn't exist */
+		fprintf(stderr, "Input file %s doesn't exist! Exiting.", args.input);
+		return 1;
+	}
+	if (fgetc(fopen(args.input, "r")) == EOF) {  /* input file is empty */
+		fprintf(stderr, "Input file %s is empty.", args.input);
+		return 1;
+	}
 	if (strcmp(args.type, "veg") == 0) {
 		unsigned char T[] = {0xEF, 0x29, 0xC4, 0x46, 0x4A, 0x90, 0xD2, 0x11, 0x87, 0x22, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A};
-		set_data(T, args.version, outfile);
+		for (option_index = 0; option_index <= 15; option_index++) {
+			magic[option_index] = T[option_index];
+		}
 	} else if (strcmp(args.type, "vf") == 0) {
 		unsigned char T[] = {0xF6, 0x1B, 0x3C, 0x53, 0x35, 0xD6, 0xF3, 0x43, 0x8A, 0x90, 0x64, 0xB8, 0x87, 0x23, 0x1F, 0x7F};
-		set_data(T, args.version, outfile);
+		for (option_index = 0; option_index <= 15; option_index++) {
+			magic[option_index] = T[option_index];
+		}
 	} else {
 		fprintf(stderr, "Type %s is invalid!", args.type);
-		goto exit;
+		return 1;
 	}
-	exit:
-		if (&outfile) fclose(outfile);
-		if (&args) {
-			free((char*)args.input);
-			free((char*)args.output);
-			free((char*)args.type);
-		}
-		return 0;
+	copy_file(args.input, args.output);
+	outfile = fopen(args.output, "r+b");
+	set_data(magic, args.version, outfile);
+	fclose(outfile);
+	return 0;
 }