aboutsummaryrefslogtreecommitdiff
path: root/xkbcomp/alias.c
blob: f228b0d661a94a90d17633ebfdf320c46ef87619 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
/* $Xorg: alias.c,v 1.3 2000/08/17 19:54:30 cpqbld Exp $ */
/************************************************************
 Copyright (c) 1995 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.

 ********************************************************/
/* $XFree86$ */

#include "xkbcomp.h"
#include "misc.h"
#include "alias.h"
#include "keycodes.h"

#include <X11/extensions/XKBgeom.h>

static void
HandleCollision(AliasInfo *old,AliasInfo *new)
{
    if (strncmp(new->real,old->real,XkbKeyNameLength)==0) {
	if (((new->def.fileID==old->def.fileID)&&(warningLevel>0))||
							(warningLevel>9)) {
	    WARN2("Alias of %s for %s declared more than once\n",
					XkbKeyNameText(new->alias,XkbMessage),
					XkbKeyNameText(new->real,XkbMessage));
	    ACTION("First definition ignored\n");
	}
    }
    else {
	char *use,*ignore;
	if (new->def.merge==MergeAugment) {
	    use= old->real;
	    ignore= new->real;
	}
	else {
	    use= new->real;
	    ignore= old->real;
	}
	if (((old->def.fileID==new->def.fileID)&&(warningLevel>0))||
							(warningLevel>9)){
	    WARN1("Multiple definitions for alias %s\n",
					XkbKeyNameText(old->alias,XkbMessage));
	    ACTION2("Using %s, ignoring %s\n", XkbKeyNameText(use,XkbMessage),
					XkbKeyNameText(ignore,XkbMessage));
	}
	if (use!=old->real)
	    memcpy(old->real,use,XkbKeyNameLength);
    }
    old->def.fileID= new->def.fileID;
    old->def.merge= new->def.merge;
    return;
}

static void
InitAliasInfo(	AliasInfo *	info,
		unsigned	merge,
		unsigned	file_id,
		char *		alias,
		char *		real)
{
    bzero(info,sizeof(AliasInfo));
    info->def.merge= merge;
    info->def.fileID= file_id;
    strncpy(info->alias,alias,XkbKeyNameLength);
    strncpy(info->real,real,XkbKeyNameLength);
    return;
}

int 
HandleAliasDef(	KeyAliasDef *	def,
		unsigned 	merge,
		unsigned 	file_id,
		AliasInfo **	info_in)
{
AliasInfo *	info;

    for (info= *info_in;info!=NULL;info= (AliasInfo *)info->def.next) {
	if (strncmp(info->alias,def->alias,XkbKeyNameLength)==0) {
	    AliasInfo new;
	    InitAliasInfo(&new,merge,file_id,def->alias,def->real);
	    HandleCollision(info,&new);
	    return True;
	}
    }
    info= uTypedCalloc(1,AliasInfo);
    if (info==NULL) {
	WSGO("Allocation failure in HandleAliasDef\n");
	return False;
    }
    info->def.fileID= file_id;
    info->def.merge= merge;
    info->def.next= (CommonInfo *)*info_in;
    memcpy(info->alias,def->alias,XkbKeyNameLength);
    memcpy(info->real,def->real,XkbKeyNameLength);
    *info_in= (AliasInfo *)AddCommonInfo(&(*info_in)->def,&info->def);
    return True;
}

void
ClearAliases(AliasInfo **info_in)
{
    if ((info_in)&&(*info_in))
	ClearCommonInfo(&(*info_in)->def);
    return;
}

Bool
MergeAliases(AliasInfo **into,AliasInfo **merge,unsigned how_merge)
{
AliasInfo *	tmp;
KeyAliasDef 	def;

    if ((*merge)==NULL)
	return True;
    if ((*into)==NULL) {
	*into= *merge;
	*merge= NULL;
	return True;
    }	
    bzero((char *)&def,sizeof(KeyAliasDef));
    for (tmp= *merge;tmp!=NULL;tmp= (AliasInfo *)tmp->def.next) {
	if (how_merge==MergeDefault)
	     def.merge= tmp->def.merge;
	else def.merge= how_merge;
	memcpy(def.alias,tmp->alias,XkbKeyNameLength);
	memcpy(def.real,tmp->real,XkbKeyNameLength);
	if (!HandleAliasDef(&def,def.merge,tmp->def.fileID,into))
	    return False;
    }
    return True;
}

int
ApplyAliases(XkbDescPtr	xkb,Bool toGeom,AliasInfo **info_in)
{
register int 	i;
XkbKeyAliasPtr	old,a;
AliasInfo *	info;
int		nNew,nOld;
Status		status;

    if (*info_in==NULL)
	return True;
    if (toGeom) {
	nOld= (xkb->geom?xkb->geom->num_key_aliases:0);
	old= (xkb->geom?xkb->geom->key_aliases:NULL);
    }
    else {
	nOld= (xkb->names?xkb->names->num_key_aliases:0);
	old= (xkb->names?xkb->names->key_aliases:NULL);
    }
    for (nNew=0,info= *info_in;info!=NULL;info= (AliasInfo *)info->def.next) {
	unsigned long lname;
	unsigned int kc;

	lname= KeyNameToLong(info->real);
	if (!FindNamedKey(xkb,lname,&kc,False,CreateKeyNames(xkb),0)) {
	    if (warningLevel>4) {
		WARN2("Attempt to alias %s to non-existent key %s\n",
					XkbKeyNameText(info->alias,XkbMessage),
					XkbKeyNameText(info->real,XkbMessage));
		ACTION("Ignored\n");
	    }
	    info->alias[0]= '\0';
	    continue;
	}
	lname= KeyNameToLong(info->alias);
	if (FindNamedKey(xkb,lname,&kc,False,False,0)) {
	    if (warningLevel>4) {
		WARN("Attempt to create alias with the name of a real key\n");
		ACTION2("Alias \"%s = %s\" ignored\n",
					XkbKeyNameText(info->alias,XkbMessage),
					XkbKeyNameText(info->real,XkbMessage));
	    }
	    info->alias[0]= '\0';
	    continue;
	}
	nNew++;
	if ( old ) {
	    for (i=0,a=old;i<nOld;i++,a++) {
		if (strncmp(a->alias,info->alias,XkbKeyNameLength)==0) {
		    AliasInfo old;
		    InitAliasInfo(&old,MergeAugment,0,a->alias,a->real);
		    HandleCollision(&old,info);
		    memcpy(old.real,a->real,XkbKeyNameLength);
		    info->alias[0]= '\0';
		    nNew--;
		    break;
		}
	    }
	}
    }
    if (nNew==0) {
	ClearCommonInfo(&(*info_in)->def);
	*info_in= NULL;
	return True;
    }
    status= Success;
    if (toGeom) {
	if (!xkb->geom) {
	    XkbGeometrySizesRec	sizes;
	    bzero((char *)&sizes,sizeof(XkbGeometrySizesRec));
	    sizes.which= XkbGeomKeyAliasesMask;
	    sizes.num_key_aliases= nOld+nNew;
	    status= XkbAllocGeometry(xkb,&sizes);
	}
	else {
	    status= XkbAllocGeomKeyAliases(xkb->geom,nOld+nNew);
	}
	if (xkb->geom)
	    old= xkb->geom->key_aliases;
    }
    else {
	status= XkbAllocNames(xkb,XkbKeyAliasesMask,0,nOld+nNew);
	if (xkb->names)
	    old= xkb->names->key_aliases;
    }
    if (status!=Success) {
	WSGO("Allocation failure in ApplyAliases\n");
	return False;
    }
    if (toGeom) 
	 a= &xkb->geom->key_aliases[nOld];
    else a= &xkb->names->key_aliases[nOld];
    for (info= *info_in;info!=NULL;info= (AliasInfo *)info->def.next) {
	if (info->alias[0]!='\0') {
	    strncpy(a->alias,info->alias,XkbKeyNameLength);
	    strncpy(a->real,info->real,XkbKeyNameLength);
	    a++;
	}
    }
#ifdef DEBUG
    if ((a-old)!=(nOld+nNew)) {
	WSGO2("Expected %d aliases total but created %d\n",nOld+nNew,a-old);
    }
#endif
    if (toGeom)	
	xkb->geom->num_key_aliases+= nNew;
    ClearCommonInfo(&(*info_in)->def);
    *info_in= NULL;
    return True;
}