add --list-supported command, fix errors in help page

3 files changed, 22 insertions, 3 deletions

diff --git a/include/ptouch.h b/include/ptouch.h
index 61db5c8..2630994 100644
--- a/include/ptouch.h
+++ b/include/ptouch.h
@@ -104,3 +104,4 @@ int ptouch_getmaxwidth(ptouch_dev ptdev);
 int ptouch_enable_packbits(ptouch_dev ptdev);
 int ptouch_rasterstart(ptouch_dev ptdev);
 int ptouch_sendraster(ptouch_dev ptdev, uint8_t *data, size_t len);
+void ptouch_list_supported();
diff --git a/src/libptouch.c b/src/libptouch.c
index 9f81d1c..673c76e 100644
--- a/src/libptouch.c
+++ b/src/libptouch.c
@@ -330,3 +330,14 @@ int ptouch_sendraster(ptouch_dev ptdev, uint8_t *data, size_t len)
 	}
 	return rc;
 }
+
+void ptouch_list_supported()
+{
+	printf("Supported printers (some might have quirks)\n");
+	for (int i=0; ptdevs[i].vid > 0; i++) {
+		if ((ptdevs[i].flags & FLAG_PLITE) != FLAG_PLITE) {
+			printf("\t%s\n", ptdevs[i].name);
+		}
+	}
+	return;
+}
diff --git a/src/ptouch-print.c b/src/ptouch-print.c
index ebb634f..145e647 100644
--- a/src/ptouch-print.c
+++ b/src/ptouch-print.c
@@ -360,17 +360,21 @@ void usage(char *progname)
 {
 	printf("usage: %s [options] <print-command(s)>\n", progname);
 	printf("options:\n");
+	printf("\t--debug\t\t\tenable debug output\n");
 	printf("\t--font <file>\t\tuse font <file> or <name>\n");
+	printf("\t--fontsize <size>\tManually set fontsize\n");
 	printf("\t--writepng <file>\tinstead of printing, write output to png file\n");
-	printf("\t\t\t\tThis currently works only when using\n\t\t\t\tEXACTLY ONE --text statement\n");
-	printf("print-commands:\n");
+	printf("print commands:\n");
 	printf("\t--image <file>\t\tprint the given image which must be a 2 color\n");
 	printf("\t\t\t\t(black/white) png\n");
 	printf("\t--text <text>\t\tPrint 1-4 lines of text.\n");
 	printf("\t\t\t\tIf the text contains spaces, use quotation marks\n\t\t\t\taround it.\n");
 	printf("\t--cutmark\t\tPrint a mark where the tape should be cut\n");
-	printf("\t--fontsize\t\tManually set fontsize\n");
 	printf("\t--pad <n>\t\tAdd n pixels padding (blank tape)\n");
+	printf("other commands:\n");
+	printf("\t--version\t\tshow version info (required for bug report)\n");
+	printf("\t--info\t\t\tshow info about detected tape\n");
+	printf("\t--list-supported\tshow printers supported by this version\n");
 	exit(1);
 }
 
@@ -429,6 +433,9 @@ int parse_args(int argc, char **argv)
 		} else if (strcmp(&argv[i][1], "-version") == 0) {
 			printf(_("ptouch-print version %s by Dominic Radermacher\n"), VERSION);
 			exit(0);
+		} else if (strcmp(&argv[i][1], "-list-supported") == 0) {
+			ptouch_list_supported();
+			exit(0);
 		} else {
 			usage(argv[0]);
 		}