keysym: fix xkb_keysym_is_upper/lower() to work properly

Our current code (taken from the xserver) doesn't handle unicode keysyms
at all, and there seem to be some other changes compared to libX11,
which is what xkbcomp uses. So we just copy the code that does that from
libX11.
It would be much better to not have to hardcode unicode tables like
that, but it's probably better than dealing with glibc locale stuff for
now. It also doesn't affect our binary size much.

Signed-off-by: Ran Benita <ran234@gmail.com>

1 files changed, 494 insertions, 111 deletions

diff --git a/src/keysym.c b/src/keysym.c
index d659354..dd7954a 100644
--- a/src/keysym.c
+++ b/src/keysym.c
@@ -177,131 +177,514 @@ xkb_keysym_from_name(const char *s)
     return XKB_KEY_NoSymbol;
 }
 
-enum keysym_case {
-    NONE,
-    LOWERCASE,
-    UPPERCASE,
-};
-
-static enum keysym_case
-keysym_get_case(xkb_keysym_t ks)
+bool
+xkb_keysym_is_keypad(xkb_keysym_t keysym)
 {
-    unsigned set = (ks & (~0xff)) >> 8;
-
-    switch (set) {
-    case 0: /* latin 1 */
-        if ((ks >= XKB_KEY_A && ks <= XKB_KEY_Z) ||
-            (ks >= XKB_KEY_Agrave && ks <= XKB_KEY_THORN && ks !=
-             XKB_KEY_multiply))
-            return UPPERCASE;
-        if ((ks >= XKB_KEY_a && ks <= XKB_KEY_z) ||
-            (ks >= XKB_KEY_agrave && ks <= XKB_KEY_ydiaeresis))
-            return LOWERCASE;
-        break;
-
-    case 1: /* latin 2 */
-        if ((ks >= XKB_KEY_Aogonek && ks <= XKB_KEY_Zabovedot && ks !=
-             XKB_KEY_breve) ||
-            (ks >= XKB_KEY_Racute && ks <= XKB_KEY_Tcedilla))
-            return UPPERCASE;
-        if ((ks >= XKB_KEY_aogonek && ks <= XKB_KEY_zabovedot && ks !=
-             XKB_KEY_caron) ||
-            (ks >= XKB_KEY_racute && ks <= XKB_KEY_tcedilla))
-            return LOWERCASE;
-        break;
-
-    case 2: /* latin 3 */
-        if ((ks >= XKB_KEY_Hstroke && ks <= XKB_KEY_Jcircumflex) ||
-            (ks >= XKB_KEY_Cabovedot && ks <= XKB_KEY_Scircumflex))
-            return UPPERCASE;
-        if ((ks >= XKB_KEY_hstroke && ks <= XKB_KEY_jcircumflex) ||
-            (ks >= XKB_KEY_cabovedot && ks <= XKB_KEY_scircumflex))
-            return LOWERCASE;
-        break;
-
-    case 3: /* latin 4 */
-        if ((ks >= XKB_KEY_Rcedilla && ks <= XKB_KEY_Tslash) ||
-            (ks == XKB_KEY_ENG) ||
-            (ks >= XKB_KEY_Amacron && ks <= XKB_KEY_Umacron))
-            return UPPERCASE;
-        if ((ks >= XKB_KEY_rcedilla && ks <= XKB_KEY_tslash) ||
-            (ks == XKB_KEY_eng) ||
-            (ks >= XKB_KEY_amacron && ks <= XKB_KEY_umacron))
-            return LOWERCASE;
-        break;
+    return keysym >= XKB_KEY_KP_Space && keysym <= XKB_KEY_KP_Equal;
+}
 
-    case 6: /* Cyrillic */
-        if ((ks >= XKB_KEY_Serbian_DJE && ks <= XKB_KEY_Serbian_DZE) ||
-            (ks >= XKB_KEY_Cyrillic_YU && ks <= XKB_KEY_Cyrillic_HARDSIGN))
-            return UPPERCASE;
-        if ((ks >= XKB_KEY_Serbian_dje && ks <= XKB_KEY_Serbian_dze) ||
-            (ks >= XKB_KEY_Cyrillic_yu && ks <= XKB_KEY_Cyrillic_hardsign))
-            return LOWERCASE;
-        break;
+static void
+XConvertCase(xkb_keysym_t sym, xkb_keysym_t *lower, xkb_keysym_t *upper);
 
-    case 7: /* Greek */
-        if ((ks >= XKB_KEY_Greek_ALPHAaccent &&
-             ks <= XKB_KEY_Greek_OMEGAaccent) ||
-            (ks >= XKB_KEY_Greek_ALPHA && ks <= XKB_KEY_Greek_OMEGA))
-            return UPPERCASE;
-        if ((ks >= XKB_KEY_Greek_alphaaccent &&
-             ks <= XKB_KEY_Greek_omegaaccent) ||
-            (ks >= XKB_KEY_Greek_alpha && ks <= XKB_KEY_Greek_OMEGA))
-            return LOWERCASE;
-        break;
+bool
+xkb_keysym_is_lower(xkb_keysym_t ks)
+{
+    xkb_keysym_t lower, upper;
 
-    case 18: /* latin 8 */
-        if ((ks == XKB_KEY_Wcircumflex) ||
-            (ks == XKB_KEY_Ycircumflex) ||
-            (ks == XKB_KEY_Babovedot) ||
-            (ks == XKB_KEY_Dabovedot) ||
-            (ks == XKB_KEY_Fabovedot) ||
-            (ks == XKB_KEY_Mabovedot) ||
-            (ks == XKB_KEY_Pabovedot) ||
-            (ks == XKB_KEY_Sabovedot) ||
-            (ks == XKB_KEY_Tabovedot) ||
-            (ks == XKB_KEY_Wdiaeresis) ||
-            (ks == XKB_KEY_Ygrave))
-            return UPPERCASE;
-        if ((ks == XKB_KEY_wcircumflex) ||
-            (ks == XKB_KEY_ycircumflex) ||
-            (ks == XKB_KEY_babovedot) ||
-            (ks == XKB_KEY_dabovedot) ||
-            (ks == XKB_KEY_fabovedot) ||
-            (ks == XKB_KEY_mabovedot) ||
-            (ks == XKB_KEY_pabovedot) ||
-            (ks == XKB_KEY_sabovedot) ||
-            (ks == XKB_KEY_tabovedot) ||
-            (ks == XKB_KEY_wdiaeresis) ||
-            (ks == XKB_KEY_ygrave))
-            return LOWERCASE;
-        break;
+    XConvertCase(ks, &lower, &upper);
 
-    case 19: /* latin 9 */
-        if (ks == XKB_KEY_OE || ks == XKB_KEY_Ydiaeresis)
-            return UPPERCASE;
-        if (ks == XKB_KEY_oe)
-            return LOWERCASE;
-        break;
-    }
+    if (lower == upper)
+        return false;
 
-    return NONE;
+    return (ks == lower ? true : false);
 }
 
 bool
-xkb_keysym_is_lower(xkb_keysym_t keysym)
+xkb_keysym_is_upper(xkb_keysym_t ks)
 {
-    return keysym_get_case(keysym) == LOWERCASE;
+    xkb_keysym_t lower, upper;
+
+    XConvertCase(ks, &lower, &upper);
+
+    if (lower == upper)
+        return false;
+
+    return (ks == upper ? true : false);
 }
 
-bool
-xkb_keysym_is_upper(xkb_keysym_t keysym)
+/*
+ * The following is copied verbatim from libX11:src/KeyBind.c, commit
+ * d45b3fc19fbe95c41afc4e51d768df6d42332010, with the following changes:
+ *  - unsigned -> uint32_t
+ *  - unsigend short -> uint16_t
+ *  - s/XK_/XKB_KEY_
+ *
+ * XXX: If newlocale() and iswlower_l()/iswupper_l() interface ever
+ *      become portable, we should use that in conjunction with
+ *      xkb_keysym_to_utf32(), instead of all this stuff.  We should
+ *      be sure to give the same results as libX11, though, and be
+ *      locale independent; this information is used by xkbcomp to
+ *      find the automatic type to assign to key groups.
+ */
+
+static void
+UCSConvertCase(uint32_t code, xkb_keysym_t *lower, xkb_keysym_t *upper)
 {
-    return keysym_get_case(keysym) == UPPERCASE;
+    /* Case conversion for UCS, as in Unicode Data version 4.0.0 */
+    /* NB: Only converts simple one-to-one mappings. */
+
+    /* Tables are used where they take less space than     */
+    /* the code to work out the mappings. Zero values mean */
+    /* undefined code points.                              */
+
+    static uint16_t const IPAExt_upper_mapping[] = { /* part only */
+                            0x0181, 0x0186, 0x0255, 0x0189, 0x018A,
+    0x0258, 0x018F, 0x025A, 0x0190, 0x025C, 0x025D, 0x025E, 0x025F,
+    0x0193, 0x0261, 0x0262, 0x0194, 0x0264, 0x0265, 0x0266, 0x0267,
+    0x0197, 0x0196, 0x026A, 0x026B, 0x026C, 0x026D, 0x026E, 0x019C,
+    0x0270, 0x0271, 0x019D, 0x0273, 0x0274, 0x019F, 0x0276, 0x0277,
+    0x0278, 0x0279, 0x027A, 0x027B, 0x027C, 0x027D, 0x027E, 0x027F,
+    0x01A6, 0x0281, 0x0282, 0x01A9, 0x0284, 0x0285, 0x0286, 0x0287,
+    0x01AE, 0x0289, 0x01B1, 0x01B2, 0x028C, 0x028D, 0x028E, 0x028F,
+    0x0290, 0x0291, 0x01B7
+    };
+
+    static uint16_t const LatinExtB_upper_mapping[] = { /* first part only */
+    0x0180, 0x0181, 0x0182, 0x0182, 0x0184, 0x0184, 0x0186, 0x0187,
+    0x0187, 0x0189, 0x018A, 0x018B, 0x018B, 0x018D, 0x018E, 0x018F,
+    0x0190, 0x0191, 0x0191, 0x0193, 0x0194, 0x01F6, 0x0196, 0x0197,
+    0x0198, 0x0198, 0x019A, 0x019B, 0x019C, 0x019D, 0x0220, 0x019F,
+    0x01A0, 0x01A0, 0x01A2, 0x01A2, 0x01A4, 0x01A4, 0x01A6, 0x01A7,
+    0x01A7, 0x01A9, 0x01AA, 0x01AB, 0x01AC, 0x01AC, 0x01AE, 0x01AF,
+    0x01AF, 0x01B1, 0x01B2, 0x01B3, 0x01B3, 0x01B5, 0x01B5, 0x01B7,
+    0x01B8, 0x01B8, 0x01BA, 0x01BB, 0x01BC, 0x01BC, 0x01BE, 0x01F7,
+    0x01C0, 0x01C1, 0x01C2, 0x01C3, 0x01C4, 0x01C4, 0x01C4, 0x01C7,
+    0x01C7, 0x01C7, 0x01CA, 0x01CA, 0x01CA
+    };
+
+    static uint16_t const LatinExtB_lower_mapping[] = { /* first part only */
+    0x0180, 0x0253, 0x0183, 0x0183, 0x0185, 0x0185, 0x0254, 0x0188,
+    0x0188, 0x0256, 0x0257, 0x018C, 0x018C, 0x018D, 0x01DD, 0x0259,
+    0x025B, 0x0192, 0x0192, 0x0260, 0x0263, 0x0195, 0x0269, 0x0268,
+    0x0199, 0x0199, 0x019A, 0x019B, 0x026F, 0x0272, 0x019E, 0x0275,
+    0x01A1, 0x01A1, 0x01A3, 0x01A3, 0x01A5, 0x01A5, 0x0280, 0x01A8,
+    0x01A8, 0x0283, 0x01AA, 0x01AB, 0x01AD, 0x01AD, 0x0288, 0x01B0,
+    0x01B0, 0x028A, 0x028B, 0x01B4, 0x01B4, 0x01B6, 0x01B6, 0x0292,
+    0x01B9, 0x01B9, 0x01BA, 0x01BB, 0x01BD, 0x01BD, 0x01BE, 0x01BF,
+    0x01C0, 0x01C1, 0x01C2, 0x01C3, 0x01C6, 0x01C6, 0x01C6, 0x01C9,
+    0x01C9, 0x01C9, 0x01CC, 0x01CC, 0x01CC
+    };
+
+    static uint16_t const Greek_upper_mapping[] = {
+    0x0000, 0x0000, 0x0000, 0x0000, 0x0374, 0x0375, 0x0000, 0x0000,
+    0x0000, 0x0000, 0x037A, 0x0000, 0x0000, 0x0000, 0x037E, 0x0000,
+    0x0000, 0x0000, 0x0000, 0x0000, 0x0384, 0x0385, 0x0386, 0x0387,
+    0x0388, 0x0389, 0x038A, 0x0000, 0x038C, 0x0000, 0x038E, 0x038F,
+    0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396, 0x0397,
+    0x0398, 0x0399, 0x039A, 0x039B, 0x039C, 0x039D, 0x039E, 0x039F,
+    0x03A0, 0x03A1, 0x0000, 0x03A3, 0x03A4, 0x03A5, 0x03A6, 0x03A7,
+    0x03A8, 0x03A9, 0x03AA, 0x03AB, 0x0386, 0x0388, 0x0389, 0x038A,
+    0x03B0, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396, 0x0397,
+    0x0398, 0x0399, 0x039A, 0x039B, 0x039C, 0x039D, 0x039E, 0x039F,
+    0x03A0, 0x03A1, 0x03A3, 0x03A3, 0x03A4, 0x03A5, 0x03A6, 0x03A7,
+    0x03A8, 0x03A9, 0x03AA, 0x03AB, 0x038C, 0x038E, 0x038F, 0x0000,
+    0x0392, 0x0398, 0x03D2, 0x03D3, 0x03D4, 0x03A6, 0x03A0, 0x03D7,
+    0x03D8, 0x03D8, 0x03DA, 0x03DA, 0x03DC, 0x03DC, 0x03DE, 0x03DE,
+    0x03E0, 0x03E0, 0x03E2, 0x03E2, 0x03E4, 0x03E4, 0x03E6, 0x03E6,
+    0x03E8, 0x03E8, 0x03EA, 0x03EA, 0x03EC, 0x03EC, 0x03EE, 0x03EE,
+    0x039A, 0x03A1, 0x03F9, 0x03F3, 0x03F4, 0x0395, 0x03F6, 0x03F7,
+    0x03F7, 0x03F9, 0x03FA, 0x03FA, 0x0000, 0x0000, 0x0000, 0x0000
+    };
+
+    static uint16_t const Greek_lower_mapping[] = {
+    0x0000, 0x0000, 0x0000, 0x0000, 0x0374, 0x0375, 0x0000, 0x0000,
+    0x0000, 0x0000, 0x037A, 0x0000, 0x0000, 0x0000, 0x037E, 0x0000,
+    0x0000, 0x0000, 0x0000, 0x0000, 0x0384, 0x0385, 0x03AC, 0x0387,
+    0x03AD, 0x03AE, 0x03AF, 0x0000, 0x03CC, 0x0000, 0x03CD, 0x03CE,
+    0x0390, 0x03B1, 0x03B2, 0x03B3, 0x03B4, 0x03B5, 0x03B6, 0x03B7,
+    0x03B8, 0x03B9, 0x03BA, 0x03BB, 0x03BC, 0x03BD, 0x03BE, 0x03BF,
+    0x03C0, 0x03C1, 0x0000, 0x03C3, 0x03C4, 0x03C5, 0x03C6, 0x03C7,
+    0x03C8, 0x03C9, 0x03CA, 0x03CB, 0x03AC, 0x03AD, 0x03AE, 0x03AF,
+    0x03B0, 0x03B1, 0x03B2, 0x03B3, 0x03B4, 0x03B5, 0x03B6, 0x03B7,
+    0x03B8, 0x03B9, 0x03BA, 0x03BB, 0x03BC, 0x03BD, 0x03BE, 0x03BF,
+    0x03C0, 0x03C1, 0x03C2, 0x03C3, 0x03C4, 0x03C5, 0x03C6, 0x03C7,
+    0x03C8, 0x03C9, 0x03CA, 0x03CB, 0x03CC, 0x03CD, 0x03CE, 0x0000,
+    0x03D0, 0x03D1, 0x03D2, 0x03D3, 0x03D4, 0x03D5, 0x03D6, 0x03D7,
+    0x03D9, 0x03D9, 0x03DB, 0x03DB, 0x03DD, 0x03DD, 0x03DF, 0x03DF,
+    0x03E1, 0x03E1, 0x03E3, 0x03E3, 0x03E5, 0x03E5, 0x03E7, 0x03E7,
+    0x03E9, 0x03E9, 0x03EB, 0x03EB, 0x03ED, 0x03ED, 0x03EF, 0x03EF,
+    0x03F0, 0x03F1, 0x03F2, 0x03F3, 0x03B8, 0x03F5, 0x03F6, 0x03F8,
+    0x03F8, 0x03F2, 0x03FB, 0x03FB, 0x0000, 0x0000, 0x0000, 0x0000
+    };
+
+    static uint16_t const GreekExt_lower_mapping[] = {
+    0x1F00, 0x1F01, 0x1F02, 0x1F03, 0x1F04, 0x1F05, 0x1F06, 0x1F07,
+    0x1F00, 0x1F01, 0x1F02, 0x1F03, 0x1F04, 0x1F05, 0x1F06, 0x1F07,
+    0x1F10, 0x1F11, 0x1F12, 0x1F13, 0x1F14, 0x1F15, 0x0000, 0x0000,
+    0x1F10, 0x1F11, 0x1F12, 0x1F13, 0x1F14, 0x1F15, 0x0000, 0x0000,
+    0x1F20, 0x1F21, 0x1F22, 0x1F23, 0x1F24, 0x1F25, 0x1F26, 0x1F27,
+    0x1F20, 0x1F21, 0x1F22, 0x1F23, 0x1F24, 0x1F25, 0x1F26, 0x1F27,
+    0x1F30, 0x1F31, 0x1F32, 0x1F33, 0x1F34, 0x1F35, 0x1F36, 0x1F37,
+    0x1F30, 0x1F31, 0x1F32, 0x1F33, 0x1F34, 0x1F35, 0x1F36, 0x1F37,
+    0x1F40, 0x1F41, 0x1F42, 0x1F43, 0x1F44, 0x1F45, 0x0000, 0x0000,
+    0x1F40, 0x1F41, 0x1F42, 0x1F43, 0x1F44, 0x1F45, 0x0000, 0x0000,
+    0x1F50, 0x1F51, 0x1F52, 0x1F53, 0x1F54, 0x1F55, 0x1F56, 0x1F57,
+    0x0000, 0x1F51, 0x0000, 0x1F53, 0x0000, 0x1F55, 0x0000, 0x1F57,
+    0x1F60, 0x1F61, 0x1F62, 0x1F63, 0x1F64, 0x1F65, 0x1F66, 0x1F67,
+    0x1F60, 0x1F61, 0x1F62, 0x1F63, 0x1F64, 0x1F65, 0x1F66, 0x1F67,
+    0x1F70, 0x1F71, 0x1F72, 0x1F73, 0x1F74, 0x1F75, 0x1F76, 0x1F77,
+    0x1F78, 0x1F79, 0x1F7A, 0x1F7B, 0x1F7C, 0x1F7D, 0x0000, 0x0000,
+    0x1F80, 0x1F81, 0x1F82, 0x1F83, 0x1F84, 0x1F85, 0x1F86, 0x1F87,
+    0x1F80, 0x1F81, 0x1F82, 0x1F83, 0x1F84, 0x1F85, 0x1F86, 0x1F87,
+    0x1F90, 0x1F91, 0x1F92, 0x1F93, 0x1F94, 0x1F95, 0x1F96, 0x1F97,
+    0x1F90, 0x1F91, 0x1F92, 0x1F93, 0x1F94, 0x1F95, 0x1F96, 0x1F97,
+    0x1FA0, 0x1FA1, 0x1FA2, 0x1FA3, 0x1FA4, 0x1FA5, 0x1FA6, 0x1FA7,
+    0x1FA0, 0x1FA1, 0x1FA2, 0x1FA3, 0x1FA4, 0x1FA5, 0x1FA6, 0x1FA7,
+    0x1FB0, 0x1FB1, 0x1FB2, 0x1FB3, 0x1FB4, 0x0000, 0x1FB6, 0x1FB7,
+    0x1FB0, 0x1FB1, 0x1F70, 0x1F71, 0x1FB3, 0x1FBD, 0x1FBE, 0x1FBF,
+    0x1FC0, 0x1FC1, 0x1FC2, 0x1FC3, 0x1FC4, 0x0000, 0x1FC6, 0x1FC7,
+    0x1F72, 0x1F73, 0x1F74, 0x1F75, 0x1FC3, 0x1FCD, 0x1FCE, 0x1FCF,
+    0x1FD0, 0x1FD1, 0x1FD2, 0x1FD3, 0x0000, 0x0000, 0x1FD6, 0x1FD7,
+    0x1FD0, 0x1FD1, 0x1F76, 0x1F77, 0x0000, 0x1FDD, 0x1FDE, 0x1FDF,
+    0x1FE0, 0x1FE1, 0x1FE2, 0x1FE3, 0x1FE4, 0x1FE5, 0x1FE6, 0x1FE7,
+    0x1FE0, 0x1FE1, 0x1F7A, 0x1F7B, 0x1FE5, 0x1FED, 0x1FEE, 0x1FEF,
+    0x0000, 0x0000, 0x1FF2, 0x1FF3, 0x1FF4, 0x0000, 0x1FF6, 0x1FF7,
+    0x1F78, 0x1F79, 0x1F7C, 0x1F7D, 0x1FF3, 0x1FFD, 0x1FFE, 0x0000
+    };
+
+    static uint16_t const GreekExt_upper_mapping[] = {
+    0x1F08, 0x1F09, 0x1F0A, 0x1F0B, 0x1F0C, 0x1F0D, 0x1F0E, 0x1F0F,
+    0x1F08, 0x1F09, 0x1F0A, 0x1F0B, 0x1F0C, 0x1F0D, 0x1F0E, 0x1F0F,
+    0x1F18, 0x1F19, 0x1F1A, 0x1F1B, 0x1F1C, 0x1F1D, 0x0000, 0x0000,
+    0x1F18, 0x1F19, 0x1F1A, 0x1F1B, 0x1F1C, 0x1F1D, 0x0000, 0x0000,
+    0x1F28, 0x1F29, 0x1F2A, 0x1F2B, 0x1F2C, 0x1F2D, 0x1F2E, 0x1F2F,
+    0x1F28, 0x1F29, 0x1F2A, 0x1F2B, 0x1F2C, 0x1F2D, 0x1F2E, 0x1F2F,
+    0x1F38, 0x1F39, 0x1F3A, 0x1F3B, 0x1F3C, 0x1F3D, 0x1F3E, 0x1F3F,
+    0x1F38, 0x1F39, 0x1F3A, 0x1F3B, 0x1F3C, 0x1F3D, 0x1F3E, 0x1F3F,
+    0x1F48, 0x1F49, 0x1F4A, 0x1F4B, 0x1F4C, 0x1F4D, 0x0000, 0x0000,
+    0x1F48, 0x1F49, 0x1F4A, 0x1F4B, 0x1F4C, 0x1F4D, 0x0000, 0x0000,
+    0x1F50, 0x1F59, 0x1F52, 0x1F5B, 0x1F54, 0x1F5D, 0x1F56, 0x1F5F,
+    0x0000, 0x1F59, 0x0000, 0x1F5B, 0x0000, 0x1F5D, 0x0000, 0x1F5F,
+    0x1F68, 0x1F69, 0x1F6A, 0x1F6B, 0x1F6C, 0x1F6D, 0x1F6E, 0x1F6F,
+    0x1F68, 0x1F69, 0x1F6A, 0x1F6B, 0x1F6C, 0x1F6D, 0x1F6E, 0x1F6F,
+    0x1FBA, 0x1FBB, 0x1FC8, 0x1FC9, 0x1FCA, 0x1FCB, 0x1FDA, 0x1FDB,
+    0x1FF8, 0x1FF9, 0x1FEA, 0x1FEB, 0x1FFA, 0x1FFB, 0x0000, 0x0000,
+    0x1F88, 0x1F89, 0x1F8A, 0x1F8B, 0x1F8C, 0x1F8D, 0x1F8E, 0x1F8F,
+    0x1F88, 0x1F89, 0x1F8A, 0x1F8B, 0x1F8C, 0x1F8D, 0x1F8E, 0x1F8F,
+    0x1F98, 0x1F99, 0x1F9A, 0x1F9B, 0x1F9C, 0x1F9D, 0x1F9E, 0x1F9F,
+    0x1F98, 0x1F99, 0x1F9A, 0x1F9B, 0x1F9C, 0x1F9D, 0x1F9E, 0x1F9F,
+    0x1FA8, 0x1FA9, 0x1FAA, 0x1FAB, 0x1FAC, 0x1FAD, 0x1FAE, 0x1FAF,
+    0x1FA8, 0x1FA9, 0x1FAA, 0x1FAB, 0x1FAC, 0x1FAD, 0x1FAE, 0x1FAF,
+    0x1FB8, 0x1FB9, 0x1FB2, 0x1FBC, 0x1FB4, 0x0000, 0x1FB6, 0x1FB7,
+    0x1FB8, 0x1FB9, 0x1FBA, 0x1FBB, 0x1FBC, 0x1FBD, 0x0399, 0x1FBF,
+    0x1FC0, 0x1FC1, 0x1FC2, 0x1FCC, 0x1FC4, 0x0000, 0x1FC6, 0x1FC7,
+    0x1FC8, 0x1FC9, 0x1FCA, 0x1FCB, 0x1FCC, 0x1FCD, 0x1FCE, 0x1FCF,
+    0x1FD8, 0x1FD9, 0x1FD2, 0x1FD3, 0x0000, 0x0000, 0x1FD6, 0x1FD7,
+    0x1FD8, 0x1FD9, 0x1FDA, 0x1FDB, 0x0000, 0x1FDD, 0x1FDE, 0x1FDF,
+    0x1FE8, 0x1FE9, 0x1FE2, 0x1FE3, 0x1FE4, 0x1FEC, 0x1FE6, 0x1FE7,
+    0x1FE8, 0x1FE9, 0x1FEA, 0x1FEB, 0x1FEC, 0x1FED, 0x1FEE, 0x1FEF,
+    0x0000, 0x0000, 0x1FF2, 0x1FFC, 0x1FF4, 0x0000, 0x1FF6, 0x1FF7,
+    0x1FF8, 0x1FF9, 0x1FFA, 0x1FFB, 0x1FFC, 0x1FFD, 0x1FFE, 0x0000
+    };
+
+    *lower = code;
+    *upper = code;
+
+    /* Basic Latin and Latin-1 Supplement, U+0000 to U+00FF */
+    if (code <= 0x00ff) {
+        if (code >= 0x0041 && code <= 0x005a)             /* A-Z */
+            *lower += 0x20;
+        else if (code >= 0x0061 && code <= 0x007a)        /* a-z */
+            *upper -= 0x20;
+        else if ( (code >= 0x00c0 && code <= 0x00d6) ||
+	          (code >= 0x00d8 && code <= 0x00de) )
+            *lower += 0x20;
+        else if ( (code >= 0x00e0 && code <= 0x00f6) ||
+	          (code >= 0x00f8 && code <= 0x00fe) )
+            *upper -= 0x20;
+        else if (code == 0x00ff)      /* y with diaeresis */
+            *upper = 0x0178;
+        else if (code == 0x00b5)      /* micro sign */
+            *upper = 0x039c;
+	return;
+    }
+
+    /* Latin Extended-A, U+0100 to U+017F */
+    if (code >= 0x0100 && code <= 0x017f) {
+        if ( (code >= 0x0100 && code <= 0x012f) ||
+             (code >= 0x0132 && code <= 0x0137) ||
+             (code >= 0x014a && code <= 0x0177) ) {
+            *upper = code & ~1;
+            *lower = code | 1;
+        }
+        else if ( (code >= 0x0139 && code <= 0x0148) ||
+                  (code >= 0x0179 && code <= 0x017e) ) {
+            if (code & 1)
+	        *lower += 1;
+            else
+	        *upper -= 1;
+        }
+        else if (code == 0x0130)
+            *lower = 0x0069;
+        else if (code == 0x0131)
+            *upper = 0x0049;
+        else if (code == 0x0178)
+            *lower = 0x00ff;
+        else if (code == 0x017f)
+            *upper = 0x0053;
+        return;
+    }
+
+    /* Latin Extended-B, U+0180 to U+024F */
+    if (code >= 0x0180 && code <= 0x024f) {
+        if (code >= 0x01cd && code <= 0x01dc) {
+	    if (code & 1)
+	       *lower += 1;
+	    else
+	       *upper -= 1;
+        }
+        else if ( (code >= 0x01de && code <= 0x01ef) ||
+                  (code >= 0x01f4 && code <= 0x01f5) ||
+                  (code >= 0x01f8 && code <= 0x021f) ||
+                  (code >= 0x0222 && code <= 0x0233) ) {
+            *lower |= 1;
+            *upper &= ~1;
+        }
+        else if (code >= 0x0180 && code <= 0x01cc) {
+            *lower = LatinExtB_lower_mapping[code - 0x0180];
+            *upper = LatinExtB_upper_mapping[code - 0x0180];
+        }
+        else if (code == 0x01dd)
+            *upper = 0x018e;
+        else if (code == 0x01f1 || code == 0x01f2) {
+            *lower = 0x01f3;
+            *upper = 0x01f1;
+        }
+        else if (code == 0x01f3)
+            *upper = 0x01f1;
+        else if (code == 0x01f6)
+            *lower = 0x0195;
+        else if (code == 0x01f7)
+            *lower = 0x01bf;
+        else if (code == 0x0220)
+            *lower = 0x019e;
+        return;
+    }
+
+    /* IPA Extensions, U+0250 to U+02AF */
+    if (code >= 0x0253 && code <= 0x0292) {
+        *upper = IPAExt_upper_mapping[code - 0x0253];
+    }
+
+    /* Combining Diacritical Marks, U+0300 to U+036F */
+    if (code == 0x0345) {
+        *upper = 0x0399;
+    }
+
+    /* Greek and Coptic, U+0370 to U+03FF */
+    if (code >= 0x0370 && code <= 0x03ff) {
+        *lower = Greek_lower_mapping[code - 0x0370];
+        *upper = Greek_upper_mapping[code - 0x0370];
+        if (*upper == 0)
+            *upper = code;
+        if (*lower == 0)
+            *lower = code;
+    }
+
+    /* Cyrillic and Cyrillic Supplementary, U+0400 to U+052F */
+    if ( (code >= 0x0400 && code <= 0x04ff) ||
+         (code >= 0x0500 && code <= 0x052f) ) {
+        if (code >= 0x0400 && code <= 0x040f)
+            *lower += 0x50;
+        else if (code >= 0x0410 && code <= 0x042f)
+            *lower += 0x20;
+        else if (code >= 0x0430 && code <= 0x044f)
+            *upper -= 0x20;
+        else if (code >= 0x0450 && code <= 0x045f)
+            *upper -= 0x50;
+        else if ( (code >= 0x0460 && code <= 0x0481) ||
+                  (code >= 0x048a && code <= 0x04bf) ||
+	          (code >= 0x04d0 && code <= 0x04f5) ||
+	          (code >= 0x04f8 && code <= 0x04f9) ||
+                  (code >= 0x0500 && code <= 0x050f) ) {
+            *upper &= ~1;
+            *lower |= 1;
+        }
+        else if (code >= 0x04c1 && code <= 0x04ce) {
+	    if (code & 1)
+	        *lower += 1;
+	    else
+	        *upper -= 1;
+        }
+    }
+
+    /* Armenian, U+0530 to U+058F */
+    if (code >= 0x0530 && code <= 0x058f) {
+        if (code >= 0x0531 && code <= 0x0556)
+            *lower += 0x30;
+        else if (code >=0x0561 && code <= 0x0586)
+            *upper -= 0x30;
+    }
+
+    /* Latin Extended Additional, U+1E00 to U+1EFF */
+    if (code >= 0x1e00 && code <= 0x1eff) {
+        if ( (code >= 0x1e00 && code <= 0x1e95) ||
+             (code >= 0x1ea0 && code <= 0x1ef9) ) {
+            *upper &= ~1;
+            *lower |= 1;
+        }
+        else if (code == 0x1e9b)
+            *upper = 0x1e60;
+    }
+
+    /* Greek Extended, U+1F00 to U+1FFF */
+    if (code >= 0x1f00 && code <= 0x1fff) {
+        *lower = GreekExt_lower_mapping[code - 0x1f00];
+        *upper = GreekExt_upper_mapping[code - 0x1f00];
+        if (*upper == 0)
+            *upper = code;
+        if (*lower == 0)
+            *lower = code;
+    }
+
+    /* Letterlike Symbols, U+2100 to U+214F */
+    if (code >= 0x2100 && code <= 0x214f) {
+        switch (code) {
+        case 0x2126: *lower = 0x03c9; break;
+        case 0x212a: *lower = 0x006b; break;
+        case 0x212b: *lower = 0x00e5; break;
+        }
+    }
+    /* Number Forms, U+2150 to U+218F */
+    else if (code >= 0x2160 && code <= 0x216f)
+        *lower += 0x10;
+    else if (code >= 0x2170 && code <= 0x217f)
+        *upper -= 0x10;
+    /* Enclosed Alphanumerics, U+2460 to U+24FF */
+    else if (code >= 0x24b6 && code <= 0x24cf)
+        *lower += 0x1a;
+    else if (code >= 0x24d0 && code <= 0x24e9)
+        *upper -= 0x1a;
+    /* Halfwidth and Fullwidth Forms, U+FF00 to U+FFEF */
+    else if (code >= 0xff21 && code <= 0xff3a)
+        *lower += 0x20;
+    else if (code >= 0xff41 && code <= 0xff5a)
+        *upper -= 0x20;
+    /* Deseret, U+10400 to U+104FF */
+    else if (code >= 0x10400 && code <= 0x10427)
+        *lower += 0x28;
+    else if (code >= 0x10428 && code <= 0x1044f)
+        *upper -= 0x28;
 }
 
-bool
-xkb_keysym_is_keypad(xkb_keysym_t keysym)
+static void
+XConvertCase(xkb_keysym_t sym, xkb_keysym_t *lower, xkb_keysym_t *upper)
 {
-    return keysym >= XKB_KEY_KP_Space && keysym <= XKB_KEY_KP_Equal;
+    /* Latin 1 keysym */
+    if (sym < 0x100) {
+        UCSConvertCase(sym, lower, upper);
+	return;
+    }
+
+    /* Unicode keysym */
+    if ((sym & 0xff000000) == 0x01000000) {
+        UCSConvertCase((sym & 0x00ffffff), lower, upper);
+        *upper |= 0x01000000;
+        *lower |= 0x01000000;
+        return;
+    }
+
+    /* Legacy keysym */
+
+    *lower = sym;
+    *upper = sym;
+
+    switch(sym >> 8) {
+    case 1: /* Latin 2 */
+	/* Assume the KeySym is a legal value (ignore discontinuities) */
+	if (sym == XKB_KEY_Aogonek)
+	    *lower = XKB_KEY_aogonek;
+	else if (sym >= XKB_KEY_Lstroke && sym <= XKB_KEY_Sacute)
+	    *lower += (XKB_KEY_lstroke - XKB_KEY_Lstroke);
+	else if (sym >= XKB_KEY_Scaron && sym <= XKB_KEY_Zacute)
+	    *lower += (XKB_KEY_scaron - XKB_KEY_Scaron);
+	else if (sym >= XKB_KEY_Zcaron && sym <= XKB_KEY_Zabovedot)
+	    *lower += (XKB_KEY_zcaron - XKB_KEY_Zcaron);
+	else if (sym == XKB_KEY_aogonek)
+	    *upper = XKB_KEY_Aogonek;
+	else if (sym >= XKB_KEY_lstroke && sym <= XKB_KEY_sacute)
+	    *upper -= (XKB_KEY_lstroke - XKB_KEY_Lstroke);
+	else if (sym >= XKB_KEY_scaron && sym <= XKB_KEY_zacute)
+	    *upper -= (XKB_KEY_scaron - XKB_KEY_Scaron);
+	else if (sym >= XKB_KEY_zcaron && sym <= XKB_KEY_zabovedot)
+	    *upper -= (XKB_KEY_zcaron - XKB_KEY_Zcaron);
+	else if (sym >= XKB_KEY_Racute && sym <= XKB_KEY_Tcedilla)
+	    *lower += (XKB_KEY_racute - XKB_KEY_Racute);
+	else if (sym >= XKB_KEY_racute && sym <= XKB_KEY_tcedilla)
+	    *upper -= (XKB_KEY_racute - XKB_KEY_Racute);
+	break;
+    case 2: /* Latin 3 */
+	/* Assume the KeySym is a legal value (ignore discontinuities) */
+	if (sym >= XKB_KEY_Hstroke && sym <= XKB_KEY_Hcircumflex)
+	    *lower += (XKB_KEY_hstroke - XKB_KEY_Hstroke);
+	else if (sym >= XKB_KEY_Gbreve && sym <= XKB_KEY_Jcircumflex)
+	    *lower += (XKB_KEY_gbreve - XKB_KEY_Gbreve);
+	else if (sym >= XKB_KEY_hstroke && sym <= XKB_KEY_hcircumflex)
+	    *upper -= (XKB_KEY_hstroke - XKB_KEY_Hstroke);
+	else if (sym >= XKB_KEY_gbreve && sym <= XKB_KEY_jcircumflex)
+	    *upper -= (XKB_KEY_gbreve - XKB_KEY_Gbreve);
+	else if (sym >= XKB_KEY_Cabovedot && sym <= XKB_KEY_Scircumflex)
+	    *lower += (XKB_KEY_cabovedot - XKB_KEY_Cabovedot);
+	else if (sym >= XKB_KEY_cabovedot && sym <= XKB_KEY_scircumflex)
+	    *upper -= (XKB_KEY_cabovedot - XKB_KEY_Cabovedot);
+	break;
+    case 3: /* Latin 4 */
+	/* Assume the KeySym is a legal value (ignore discontinuities) */
+	if (sym >= XKB_KEY_Rcedilla && sym <= XKB_KEY_Tslash)
+	    *lower += (XKB_KEY_rcedilla - XKB_KEY_Rcedilla);
+	else if (sym >= XKB_KEY_rcedilla && sym <= XKB_KEY_tslash)
+	    *upper -= (XKB_KEY_rcedilla - XKB_KEY_Rcedilla);
+	else if (sym == XKB_KEY_ENG)
+	    *lower = XKB_KEY_eng;
+	else if (sym == XKB_KEY_eng)
+	    *upper = XKB_KEY_ENG;
+	else if (sym >= XKB_KEY_Amacron && sym <= XKB_KEY_Umacron)
+	    *lower += (XKB_KEY_amacron - XKB_KEY_Amacron);
+	else if (sym >= XKB_KEY_amacron && sym <= XKB_KEY_umacron)
+	    *upper -= (XKB_KEY_amacron - XKB_KEY_Amacron);
+	break;
+    case 6: /* Cyrillic */
+	/* Assume the KeySym is a legal value (ignore discontinuities) */
+	if (sym >= XKB_KEY_Serbian_DJE && sym <= XKB_KEY_Serbian_DZE)
+	    *lower -= (XKB_KEY_Serbian_DJE - XKB_KEY_Serbian_dje);
+	else if (sym >= XKB_KEY_Serbian_dje && sym <= XKB_KEY_Serbian_dze)
+	    *upper += (XKB_KEY_Serbian_DJE - XKB_KEY_Serbian_dje);
+	else if (sym >= XKB_KEY_Cyrillic_YU && sym <= XKB_KEY_Cyrillic_HARDSIGN)
+	    *lower -= (XKB_KEY_Cyrillic_YU - XKB_KEY_Cyrillic_yu);
+	else if (sym >= XKB_KEY_Cyrillic_yu && sym <= XKB_KEY_Cyrillic_hardsign)
+	    *upper += (XKB_KEY_Cyrillic_YU - XKB_KEY_Cyrillic_yu);
+        break;
+    case 7: /* Greek */
+	/* Assume the KeySym is a legal value (ignore discontinuities) */
+	if (sym >= XKB_KEY_Greek_ALPHAaccent && sym <= XKB_KEY_Greek_OMEGAaccent)
+	    *lower += (XKB_KEY_Greek_alphaaccent - XKB_KEY_Greek_ALPHAaccent);
+	else if (sym >= XKB_KEY_Greek_alphaaccent && sym <= XKB_KEY_Greek_omegaaccent &&
+		 sym != XKB_KEY_Greek_iotaaccentdieresis &&
+		 sym != XKB_KEY_Greek_upsilonaccentdieresis)
+	    *upper -= (XKB_KEY_Greek_alphaaccent - XKB_KEY_Greek_ALPHAaccent);
+	else if (sym >= XKB_KEY_Greek_ALPHA && sym <= XKB_KEY_Greek_OMEGA)
+	    *lower += (XKB_KEY_Greek_alpha - XKB_KEY_Greek_ALPHA);
+	else if (sym >= XKB_KEY_Greek_alpha && sym <= XKB_KEY_Greek_omega &&
+		 sym != XKB_KEY_Greek_finalsmallsigma)
+	    *upper -= (XKB_KEY_Greek_alpha - XKB_KEY_Greek_ALPHA);
+        break;
+    case 0x13: /* Latin 9 */
+        if (sym == XKB_KEY_OE)
+            *lower = XKB_KEY_oe;
+        else if (sym == XKB_KEY_oe)
+            *upper = XKB_KEY_OE;
+        else if (sym == XKB_KEY_Ydiaeresis)
+            *lower = XKB_KEY_ydiaeresis;
+        break;
+    }
 }