listbas: add -d (dots) mode, stopgap for non-UTF8 terminals.

1 files changed, 9 insertions, 4 deletions

diff --git a/listbas.c b/listbas.c
index beacdf0..0a57623 100644
--- a/listbas.c
+++ b/listbas.c
@@ -20,16 +20,17 @@
 #define C_CYAN    6
 
 int immediate = 0, utf8 = 1, magazine = 0, inv = 0,
-	 color = 1, bold = 0, badtok = 0;
+	 color = 1, bold = 0, badtok = 0, dots = 0;
 
 const char **table = ata2utf;
 
 FILE *outfh;
 
 void print_help(void) {
-	printf("Usage: %s [-a] [-b] [-i] [-m] [-n] [-v] <inputfile>\n", self);
+	printf("Usage: %s [-a] [-b] [-d] [-i] [-m] [-n] [-v] <inputfile>\n", self);
 	printf("  -a: output raw ATASCII.\n");
 	printf("  -b: use bold for color output.\n");
+	printf("  -d: use dots instead of Unicode/UTF-8.\n");
 	printf("  -i: show immediate mode command (line 32768).\n");
 	printf("  -m: magazine style listing (see a8cat(1)).\n");
 	printf("  -n: disable color syntax highlighting.\n");
@@ -39,7 +40,7 @@ void print_help(void) {
 void parse_args(int argc, char **argv) {
 	int opt;
 
-	while( (opt = getopt(argc, argv, "viamnbh")) != -1) {
+	while( (opt = getopt(argc, argv, "viamnbdh")) != -1) {
 		switch(opt) {
 			case 'v': verbose = 1; break;
 			case 'i': immediate = 1; break;
@@ -47,6 +48,7 @@ void parse_args(int argc, char **argv) {
 			case 'm': utf8 = 0 ; magazine = 1; color = 0; table = ata2mag; break;
 			case 'n': color = 0; break;
 			case 'b': bold = 1; break;
+			case 'd': dots = 1; break;
 			case 'h': print_help(); exit(0);
 			default:
 				print_help();
@@ -178,7 +180,10 @@ void print_ata_chr(unsigned char c) {
 			end_inv(c);
 		}
 	}
-	fputs(table[c & 0x7f], outfh);
+	if(dots)
+		fputc(isprint(c & 0x7f) ? c & 0x7f : '.', outfh);
+	else
+		fputs(table[c & 0x7f], outfh);
 }
 
 void print_string(unsigned int pos, unsigned int len) {