From 4fd15b0aab0d99330f244f3db61f810e4e63148d Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Wed, 15 Mar 2006 22:07:55 +0000
Subject: [PATCH]   * Added support for Unicode characters that fall into CP437
 0x01 - 0x1f to     the DOS/conio.h driver, and updated the unicode test
 accordingly.

---
 caca/driver_conio.c | 40 ++++++++++++++++++++++++++++------------
 test/unicode.c      |  2 +-
 2 files changed, 29 insertions(+), 13 deletions(-)

diff --git a/caca/driver_conio.c b/caca/driver_conio.c
index 3d7cf24..1daad82 100644
--- a/caca/driver_conio.c
+++ b/caca/driver_conio.c
@@ -141,32 +141,42 @@ static unsigned int conio_get_event(caca_t *kk)
 
 static uint8_t conio_utf32_to_cp437(uint32_t c)
 {
-    static uint32_t const lookup[] =
+    static uint32_t const lookup1[] =
     {
-        /* 0x7f */
+        /* 0x01 - 0x0f: ☺ ☻ ♥ ♦ ♣ ♠ • ◘ ○ ◙ ♂ ♀ ♪ ♫ ☼ */
+                0x263a, 0x263b, 0x2665, 0x2666, 0x2663, 0x2660, 0x2022,
+        0x25d8, 0x25cb, 0x25d9, 0x2642, 0x2640, 0x266a, 0x266b, 0x263c,
+        /* 0x10 - 0x1f: ► ◄ ↕ ‼ ¶ § ▬ ↨ ↑ ↓ → ← ∟ ↔ ▲ ▼ */
+        0x25ba, 0x25c4, 0x2195, 0x203c, 0xb6, 0xa7, 0x25ac, 0x21a8,
+        0x2191, 0x2193, 0x2192, 0x2190, 0x221f, 0x2194, 0x25b2, 0x25bc
+    };
+
+    static uint32_t const lookup2[] =
+    {
+        /* 0x7f: ⌂ */
         0x2302,
-        /* 0x80 - 0x8f */
+        /* 0x80 - 0x8f: Ç ü é â ä à å ç ê ë è ï î ì Ä Å */
         0xc7, 0xfc, 0xe9, 0xe2, 0xe4, 0xe0, 0xe5, 0xe7,
         0xea, 0xeb, 0xe8, 0xef, 0xee, 0xec, 0xc4, 0xc5,
-        /* 0x90 - 0x9f */
+        /* 0x90 - 0x9f: É æ Æ ô ö ò û ù ÿ Ö Ü ¢ £ ¥ ₧ ƒ */
         0xc9, 0xe6, 0xc6, 0xf4, 0xf6, 0xf2, 0xfb, 0xf9,
         0xff, 0xd6, 0xdc, 0xa2, 0xa3, 0xa5, 0x20a7, 0x192,
-        /* 0xa0 - 0xaf */
+        /* 0xa0 - 0xaf: á í ó ú ñ Ñ ª º ¿ ⌐ ¬ ½ ¼ ¡ « » */
         0xe1, 0xed, 0xf3, 0xfa, 0xf1, 0xd1, 0xaa, 0xba,
         0xbf, 0x2310, 0xac, 0xbd, 0xbc, 0xa1, 0xab, 0xbb,
-        /* 0xb0 - 0xbf */
+        /* 0xb0 - 0xbf: ░ ▒ ▓ │ ┤ ╡ ╢ ╖ ╕ ╣ ║ ╗ ╝ ╜ ╛ ┐ */
         0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556,
         0x2555, 0x2563, 0x2551, 0x2557, 0x255d, 0x255c, 0x255b, 0x2510,
-        /* 0xc0 - 0xcf */
+        /* 0xc0 - 0xcf: └ ┴ ┬ ├ ─ ┼ ╞ ╟ ╚ ╔ ╩ ╦ ╠ ═ ╬ ╧ */
         0x2514, 0x2534, 0x252c, 0x251c, 0x2500, 0x253c, 0x255e, 0x255f,
         0x255a, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256c, 0x2567,
-        /* 0xd0 - 0xdf */
+        /* 0xd0 - 0xdf: ╨ ╤ ╥ ╙ ╘ ╒ ╓ ╫ ╪ ┘ ┌ █ ▄ ▌ ▐ ▀ */
         0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256b,
         0x256a, 0x2518, 0x250c, 0x2588, 0x2584, 0x258c, 0x2590, 0x2580,
-        /* 0xe0 - 0xef */
+        /* 0xe0 - 0xef: α ß Γ π Σ σ µ τ Φ Θ Ω δ ∞ φ ε ∩ */
         0x3b1, 0xdf, 0x393, 0x3c0, 0x3a3, 0x3c3, 0xb5, 0x3c4,
         0x3a6, 0x398, 0x3a9, 0x3b4, 0x221e, 0x3c6, 0x3b5, 0x2229,
-        /* 0xf0 - 0xff */
+        /* 0xf0 - 0xff: ≡ ± ≥ ≤ ⌠ ⌡ ÷ ≈ ° ∙ · √ ⁿ ² ■ <nbsp> */
         0x2261, 0xb1, 0x2265, 0x2264, 0x2320, 0x2321, 0xf7, 0x2248,
         0xb0, 0x2219, 0xb7, 0x221a, 0x207f, 0xb2, 0x25a0, 0xa0
     };
@@ -179,9 +189,15 @@ static uint8_t conio_utf32_to_cp437(uint32_t c)
     if(c < 0x00000080)
         return c;
 
-    for(i = 0; i < sizeof(lookup) / sizeof(*lookup); i++)
+    for(i = 0; i < sizeof(lookup1) / sizeof(*lookup1); i++)
+    {
+        if(lookup1[i] == c)
+            return 0x01 + i;
+    }
+
+    for(i = 0; i < sizeof(lookup2) / sizeof(*lookup2); i++)
     {
-        if(lookup[i] == c)
+        if(lookup2[i] == c)
             return 0x7f + i;
     }
 
diff --git a/test/unicode.c b/test/unicode.c
index b28b8af..7d7bf72 100644
--- a/test/unicode.c
+++ b/test/unicode.c
@@ -37,7 +37,7 @@ int main(void)
 
     cucul_set_color(qq, CUCUL_COLOR_LIGHTGRAY, CUCUL_COLOR_BLACK);
     cucul_putstr(qq, 1, 2, "This is ASCII:    | abc DEF 123 !@# |");
-    cucul_putstr(qq, 1, 3, "This is Unicode:  | äßç δεφ ░▒▓ ╞╬╗ |");
+    cucul_putstr(qq, 1, 3, "This is Unicode:  | äßç δεφ ☺♥♀ ╞╬╗ |");
     cucul_putstr(qq, 1, 4, "And this is, too: | ἀβϛ ΔЗҒ ᚴᛒᛯ ♩♔✈ |");
 
     cucul_putstr(qq, 1, 5, "If the three lines do not have the same length, there is a bug somewhere.");