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/************************************************************
* Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.
*
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting
* documentation, and that the name of Silicon Graphics not be
* used in advertising or publicity pertaining to distribution
* of the software without specific prior written permission.
* Silicon Graphics makes no representation about the suitability
* of this software for any purpose. It is provided "as is"
* without any express or implied warranty.
*
* SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
* GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
* THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
********************************************************/
#include "xkbcomp-priv.h"
#include "text.h"
#include "expr.h"
#include "vmod.h"
bool
HandleVModDef(struct xkb_context *ctx, struct xkb_mod_set *mods,
VModDef *stmt, enum merge_mode merge)
{
xkb_mod_index_t i;
struct xkb_mod *mod;
xkb_mod_mask_t mapping;
merge = (merge == MERGE_DEFAULT ? stmt->merge : merge);
if (stmt->value) {
/*
* This is a statement such as 'virtualModifiers NumLock = Mod1';
* it sets the vmod-to-real-mod[s] mapping directly instead of going
* through modifier_map or some such.
*/
if (!ExprResolveModMask(ctx, stmt->value, MOD_REAL, mods, &mapping)) {
log_err(ctx,
"Declaration of %s ignored\n",
xkb_atom_text(ctx, stmt->name));
return false;
}
}
else {
mapping = 0;
}
xkb_mods_enumerate(i, mod, mods) {
if (mod->name == stmt->name) {
if (mod->type != MOD_VIRT) {
log_err(ctx,
"Can't add a virtual modifier named \"%s\"; "
"there is already a non-virtual modifier with this name! Ignored\n",
xkb_atom_text(ctx, mod->name));
return false;
}
if (mod->mapping == mapping)
return true;
if (mod->mapping != 0) {
xkb_mod_mask_t use, ignore;
use = (merge == MERGE_OVERRIDE ? mapping : mod->mapping);
ignore = (merge == MERGE_OVERRIDE ? mod->mapping : mapping);
log_warn(ctx,
"Virtual modifier %s defined multiple times; "
"Using %s, ignoring %s\n",
xkb_atom_text(ctx, stmt->name),
ModMaskText(ctx, mods, use),
ModMaskText(ctx, mods, ignore));
mapping = use;
}
mod->mapping = mapping;
return true;
}
}
if (mods->num_mods >= XKB_MAX_MODS) {
log_err(ctx,
"Too many modifiers defined (maximum %d)\n",
XKB_MAX_MODS);
return false;
}
mods->mods[mods->num_mods].name = stmt->name;
mods->mods[mods->num_mods].type = MOD_VIRT;
mods->mods[mods->num_mods].mapping = mapping;
mods->num_mods++;
return true;
}
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