[BRLTTY] Adding a dot display to tt driver

[Dave Mielke]

[quoted lines by Christoph-Simon Senjak on 2016/09/18 at 14:06 +0200]

>Ok, I found a problem: I compiled it without ncurses support
>originally (because you have to give ncurses as explicit dependency
>in your nix-shell) and it worked.
>
>With ncurses support, only the dot display is shown, and I think I
>have located the problem: [1] says that Newline does a clrtoeol,
>which deletes the current line. So addstr("\r\n") will set the cursor
>to the beginning of the current line and then delete it. Replacing it
>with just "\n" will make it work for me, but I am not sure how that
>will be when no ncurses is available.

Please test the attached patch (tty-newline-1.patch) with and without ncurses.

-- 
Dave Mielke           | 2213 Fox Crescent | The Bible is the very Word of God.
Phone: 1-613-726-0014 | Ottawa, Ontario   | http://Mielke.cc/bible/
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-------------- next part --------------
diff --git a/Drivers/Braille/TTY/braille.c b/Drivers/Braille/TTY/braille.c
index a8c3317..2230199 100644
--- a/Drivers/Braille/TTY/braille.c
+++ b/Drivers/Braille/TTY/braille.c
@@ -39,10 +39,13 @@ static iconv_t conversionDescriptor = NULL;
 #include "unicode.h"
 #include "get_curses.h"
 
-#ifndef GOT_CURSES
+#ifdef GOT_CURSES
+#define newline() addstr("\n")
+#else /* GOT_CURSES */
 #define addstr(string) serialWriteData(ttyDevice, string, strlen(string))
 #define addch(character) do { unsigned char __c = (character); serialWriteData(ttyDevice, &__c, 1); } while(0)
 #define getch() my_getch()
+#define newline() addstr("\r\n")
 #endif /* GOT_CURSES */
 
 #ifdef GOT_CURSES
@@ -286,7 +289,7 @@ brl_writeWindow (BrailleDisplay *brl, const wchar_t *text) {
 #ifdef GOT_CURSES
   clear();
 #else /* GOT_CURSES */
-  addstr("\r\n");
+  newline();
 #endif /* GOT_CURSES */
 
   {
@@ -310,11 +313,11 @@ brl_writeWindow (BrailleDisplay *brl, const wchar_t *text) {
                         ;
       }
 
-      addstr("\r\n");
+      newline();
       writeText(braille, brl->textColumns);
 
       if (row < (brl->textRows - 1)) {
-        addstr("\r\n");
+        newline();
       }
     }
   }
@@ -332,7 +335,7 @@ brl_writeWindow (BrailleDisplay *brl, const wchar_t *text) {
     addch('\r');
     writeText(text, brl->cursor);
   } else {
-    addstr("\r\n");
+    newline();
   }
 #endif /* GOT_CURSES */