keysym.c

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Author : Daniel Stone
Date : 2012-09-12 16:54:07
Hash : b4b40d73
Message : Copyright updates With Dan Nicholson's permission (via email), update his copyright and license statements to the standard X.Org boilerplate MIT license, as both myself and Ran have been using. Clean up my copyright declarations (in some cases to correct ownership), and add copyright/license statements from myself and/or Ran where appropriate. Signed-off-by: Daniel Stone <daniel@fooishbar.org>
src/keysym.c
/*
 * Copyright 1985, 1987, 1990, 1998  The Open Group
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the names of the authors or their
 * institutions shall not be used in advertising or otherwise to promote the
 * sale, use or other dealings in this Software without prior written
 * authorization from the authors.
 */

/*
 * Copyright © 2009 Dan Nicholson
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "xkb-priv.h"
#include "ks_tables.h"

XKB_EXPORT void
xkb_keysym_get_name(xkb_keysym_t ks, char *buffer, size_t size)
{
    int i, n, h, idx;
    const unsigned char *entry;
    unsigned char val1, val2, val3, val4;

    if ((ks & ((unsigned long) ~0x1fffffff)) != 0) {
        snprintf(buffer, size, "Invalid");
        return;
    }

    /* Try to find it in our hash table. */
    if (ks <= 0x1fffffff) {
        val1 = ks >> 24;
        val2 = (ks >> 16) & 0xff;
        val3 = (ks >> 8) & 0xff;
        val4 = ks & 0xff;
        i = ks % VTABLESIZE;
        h = i + 1;
        n = VMAXHASH;

        while ((idx = hashKeysym[i])) {
            entry = &_XkeyTable[idx];

            if ((entry[0] == val1) && (entry[1] == val2) &&
                (entry[2] == val3) && (entry[3] == val4)) {
                snprintf(buffer, size, "%s", entry + 4);
                return;
            }

            if (!--n)
                break;

            i += h;
            if (i >= VTABLESIZE)
                i -= VTABLESIZE;
        }
    }

    if (ks >= 0x01000100 && ks <= 0x0110ffff)
        /* Unnamed Unicode codepoint. */
        snprintf(buffer, size, "U%lx", ks & 0xffffffUL);
    else
        /* Unnamed, non-Unicode, symbol (shouldn't generally happen). */
        snprintf(buffer, size, "0x%08x", ks);
}

XKB_EXPORT xkb_keysym_t
xkb_keysym_from_name(const char *s)
{
    int i, n, h, c, idx;
    uint32_t sig = 0;
    const char *p = s;
    char *tmp;
    const unsigned char *entry;
    unsigned char sig1, sig2;
    xkb_keysym_t val;

    while ((c = *p++))
        sig = (sig << 1) + c;

    i = sig % KTABLESIZE;
    h = i + 1;
    sig1 = (sig >> 8) & 0xff;
    sig2 = sig & 0xff;
    n = KMAXHASH;

    while ((idx = hashString[i])) {
        entry = &_XkeyTable[idx];

        if ((entry[0] == sig1) && (entry[1] == sig2) &&
            streq(s, (const char *) entry + 6)) {
            val = (entry[2] << 24) | (entry[3] << 16) |
                  (entry[4] << 8) | entry[5];
            if (!val)
                val = XKB_KEY_VoidSymbol;
            return val;
        }

        if (!--n)
            break;

        i += h;
        if (i >= KTABLESIZE)
            i -= KTABLESIZE;
    }

    if (*s == 'U') {
        val = strtoul(&s[1], &tmp, 16);
        if (tmp && *tmp != '\0')
            return XKB_KEY_NoSymbol;

        if (val < 0x20 || (val > 0x7e && val < 0xa0))
            return XKB_KEY_NoSymbol;
        if (val < 0x100)
            return val;
        if (val > 0x10ffff)
            return XKB_KEY_NoSymbol;
        return val | 0x01000000;
    }
    else if (s[0] == '0' && s[1] == 'x') {
        val = strtoul(&s[2], &tmp, 16);
        if (tmp && *tmp != '\0')
            return XKB_KEY_NoSymbol;

        return val;
    }

    /* Stupid inconsistency between the headers and XKeysymDB: the former has
     * no separating underscore, while some XF86* syms in the latter did.
     * As a last ditch effort, try without. */
    if (strncmp(s, "XF86_", 5) == 0) {
        xkb_keysym_t ret;
        tmp = strdup(s);
        if (!tmp)
            return XKB_KEY_NoSymbol;
        memmove(&tmp[4], &tmp[5], strlen(s) - 5 + 1);
        ret = xkb_keysym_from_name(tmp);
        free(tmp);
        return ret;
    }

    return XKB_KEY_NoSymbol;
}

enum keysym_case {
    NONE,
    LOWERCASE,
    UPPERCASE,
};

static enum keysym_case
keysym_get_case(xkb_keysym_t ks)
{
    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;

    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;

    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;

    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;

    case 19: /* latin 9 */
        if (ks == XKB_KEY_OE || ks == XKB_KEY_Ydiaeresis)
            return UPPERCASE;
        if (ks == XKB_KEY_oe)
            return LOWERCASE;
        break;
    }

    return NONE;
}

bool
xkb_keysym_is_lower(xkb_keysym_t keysym)
{
    return keysym_get_case(keysym) == LOWERCASE;
}

bool
xkb_keysym_is_upper(xkb_keysym_t keysym)
{
    return keysym_get_case(keysym) == UPPERCASE;
}

bool
xkb_keysym_is_keypad(xkb_keysym_t keysym)
{
    return keysym >= XKB_KEY_KP_Space && keysym <= XKB_KEY_KP_Equal;
}
kc3-lang/libxkbcommon/src/keysym.c

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kc3-lang/libxkbcommon /src/keysym.c
