From: Marc Andre Tanner <mat@brain-dump.org>
Date: Sat, 29 Dec 2007 18:13:21 +0000 (+0100)
Subject: Correctly display vt100 graphics in non UTF-8 locales.
X-Git-Url: http://git.madism.org/?p=apps%2Fmadtty.git;a=commitdiff_plain;h=226d6a58d4512b37d3f912f7be227f023b25c04c

Correctly display vt100 graphics in non UTF-8 locales.

Signed-off-by: Marc Andre Tanner <mat@brain-dump.org>
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
---

diff --git a/madtty/madtty.c b/madtty/madtty.c
index 251780f..e7f26f8 100644
--- a/madtty/madtty.c
+++ b/madtty/madtty.c
@@ -677,10 +677,19 @@ static void madtty_process_nonprinting(madtty_t *t, wchar_t wc)
     }
 }
 
+bool is_utf8 = true;
+
+static void is_utf8_locale(void)
+{
+    const char *l = getenv("LANG");
+    if (l)
+        is_utf8 = (strstr(l, "UTF-8") != NULL);
+}
+
 // vt100 special graphics and line drawing
 // 5f-7e standard vt100
 // 40-5e rxvt extension for extra curses acs chars
-static uint16_t const vt100_0[62] = { // 41 .. 7e
+static uint16_t const vt100_utf8[62] = { // 41 .. 7e
             0x2191, 0x2193, 0x2192, 0x2190, 0x2588, 0x259a, 0x2603, // 41-47 hi mr. snowman!
          0,      0,      0,      0,      0,      0,      0,      0, // 48-4f
          0,      0,      0,      0,      0,      0,      0,      0, // 50-57
@@ -691,6 +700,46 @@ static uint16_t const vt100_0[62] = { // 41 .. 7e
     0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7,         // 78-7e
 };
 
+static uint32_t vt100[62];
+
+void madtty_init_vt100_graphics(void)
+{
+    vt100['l' - 0x41] = ACS_ULCORNER;
+    vt100['m' - 0x41] = ACS_LLCORNER;
+    vt100['k' - 0x41] = ACS_URCORNER;
+    vt100['j' - 0x41] = ACS_LRCORNER;
+    vt100['u' - 0x41] = ACS_RTEE;
+    vt100['t' - 0x41] = ACS_LTEE;
+    vt100['v' - 0x41] = ACS_TTEE;
+    vt100['w' - 0x41] = ACS_BTEE;
+    vt100['q' - 0x41] = ACS_HLINE;
+    vt100['x' - 0x41] = ACS_VLINE;
+    vt100['n' - 0x41] = ACS_PLUS;
+    vt100['o' - 0x41] = ACS_S1;
+    vt100['s' - 0x41] = ACS_S9;
+    vt100['`' - 0x41] = ACS_DIAMOND;
+    vt100['a' - 0x41] = ACS_CKBOARD;
+    vt100['f' - 0x41] = ACS_DEGREE;
+    vt100['g' - 0x41] = ACS_PLMINUS;
+    vt100['~' - 0x41] = ACS_BULLET;
+    vt100[',' - 0x41] = ACS_LARROW;
+    vt100['+' - 0x41] = ACS_RARROW;
+    vt100['.' - 0x41] = ACS_DARROW;
+    vt100['-' - 0x41] = ACS_UARROW;
+    vt100['h' - 0x41] = ACS_BOARD;
+    vt100['i' - 0x41] = ACS_LANTERN;
+    vt100['0' - 0x41] = ACS_BLOCK;
+    /* these defaults were invented for ncurses */
+    vt100['p' - 0x41] = ACS_S3;
+    vt100['r' - 0x41] = ACS_S7;
+    vt100['y' - 0x41] = ACS_LEQUAL;
+    vt100['z' - 0x41] = ACS_GEQUAL;
+    vt100['{' - 0x41] = ACS_PI;
+    vt100['|' - 0x41] = ACS_NEQUAL;
+    vt100['}' - 0x41] = ACS_STERLING;
+    is_utf8_locale();
+}
+
 static void madtty_putc(madtty_t *t, wchar_t wc)
 {
     int width = 0;
@@ -711,8 +760,11 @@ static void madtty_putc(madtty_t *t, wchar_t wc)
         t_row_t *tmp;
 
         if (t->graphmode) {
-            if (wc >= 0x41 && wc <= 0x7e && vt100_0[wc - 0x41]) {
-                wc = vt100_0[wc - 0x41];
+            if (wc >= 0x41 && wc <= 0x7e) {
+                if(is_utf8 && vt100_utf8[wc - 0x41])
+                    wc = vt100_utf8[wc - 0x41];
+                else if(!is_utf8 && vt100[wc - 0x41])
+                    wc = vt100[wc - 0x41];
             }
             width = 1;
         } else {
@@ -906,7 +958,7 @@ void madtty_draw(madtty_t *t, WINDOW *win, int srow, int scol)
         for (int j = 0; j < t->cols; j++) {
             if (!j || row->attr[j] != row->attr[j - 1])
                 wattrset(win, (attr_t)row->attr[j] << NCURSES_ATTR_SHIFT);
-            if (row->text[j] >= 128) {
+            if (is_utf8 && row->text[j] >= 128) {
                 char buf[MB_CUR_MAX + 1];
                 int len;
 
diff --git a/madtty/madtty.h b/madtty/madtty.h
index d36ddfb..c790a50 100644
--- a/madtty/madtty.h
+++ b/madtty/madtty.h
@@ -32,6 +32,7 @@
 
 void madtty_init_colors(void);
 int madtty_color_pair(int fg, int bg);
+void madtty_init_vt100_graphics(void);
 
 typedef struct madtty_t madtty_t;
 
@@ -45,5 +46,4 @@ int madtty_process(madtty_t *);
 void madtty_keypress(madtty_t *, int keycode);
 void madtty_draw(madtty_t *, WINDOW *win, int startrow, int startcol);
 
-
 #endif /* MADTTY_MADTTY_H */