blob2xex: add -v -h/--help -V/--version options.

1 files changed, 16 insertions, 3 deletions

diff --git a/blob2xex.c b/blob2xex.c
index fb339e7..9740e45 100644
--- a/blob2xex.c
+++ b/blob2xex.c
@@ -121,7 +121,21 @@ int main(int argc, char **argv) {
 	char *outfile = 0, *infile = 0;
 	int i, loadaddr = -1, runaddr = -1, initaddr = -1, offset = 0, size = DEFAULT_SIZE, *param = 0;
 
-	xex_verbose = 1;
+	outfile = argv[1];
+	if(!outfile || strcmp(outfile, "--help") == 0 || strcmp(outfile, "-h") == 0) {
+		usage();
+		exit(0);
+	}
+
+	if(strcmp(outfile, "--version") == 0 || strcmp(outfile, "-V") == 0) {
+		printf(SELF " " VERSION "\n");
+		exit(0);
+	}
+
+	if(outfile[0] == '-' && outfile[1] != '\0') {
+		fprintf(stderr, SELF ": output file must come before any options.\n");
+		exit(1);
+	}
 
 	if(argc < 5) {
 		fprintf(stderr, SELF ": not enough arguments.\n");
@@ -129,8 +143,6 @@ int main(int argc, char **argv) {
 		exit(1);
 	}
 
-	outfile = argv[1];
-
 	for(i = 2; i < argc; i++) {
 		char *arg = argv[i];
 
@@ -153,6 +165,7 @@ int main(int argc, char **argv) {
 				case 'i': param = &initaddr; break;
 				case 'o': param = &offset;   break;
 				case 's': param = &size;     break;
+				case 'v': xex_verbose = 1;   break;
 				default:
 					fprintf(stderr, SELF ": unknown option '-%c'\n", arg[1]);
 					usage();