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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.
********************************************************/
%token
END_OF_FILE 0
ERROR 255
BELL 1
ACCESSX 2
MESSAGE 3
NONE 20
IGNORE 21
ECHO 22
PRINT_EV 23
SHELL 24
SOUND 25
EQUALS 40
PLUS 41
MINUS 42
DIVIDE 43
TIMES 44
OBRACE 45
CBRACE 46
OPAREN 47
CPAREN 48
OBRACKET 49
CBRACKET 50
DOT 51
COMMA 52
SEMI 53
EXCLAM 54
INVERT 55
STRING 60
INTEGER 61
FLOAT 62
IDENT 63
KEYNAME 64
%{
#ifdef DEBUG
#define YYDEBUG 1
#endif
#define DEBUG_VAR parseDebug
#include "xkbevd.h"
#include <stdlib.h>
%}
%right EQUALS
%left PLUS MINUS
%left TIMES DIVIDE
%left EXCLAM INVERT
%left OPAREN
%start CfgFile
%union {
char * str;
int ival;
CfgEntryPtr entry;
ActDefPtr act;
}
%type <str> Ident String OptString NameSpec OptNameSpec
%type <ival> ActionType EventType
%type <act> ActionDef
%type <entry> CfgFile CfgEntryList CfgEntry EventDef VarDef
%%
CfgFile : CfgEntryList
{ InterpretConfigs($1); }
;
CfgEntryList : CfgEntryList CfgEntry
{
CfgEntryPtr tmp;
if ($1!=NULL) {
for (tmp=$1;tmp->next!=NULL;tmp=tmp->next) {
/* conditional does the work */
}
tmp->next= $2;
$$= $1;
}
else $$= $2;
}
| CfgEntry { $$= $1; }
;
CfgEntry : EventDef ActionDef
{
if (($1)&&($2))
$1->action= *($2);
if ($2)
free($2);
$$= $1;
}
| VarDef { $$= $1; }
;
VarDef : Ident EQUALS NameSpec
{
CfgEntryPtr cfg;
cfg= calloc(1,sizeof(CfgEntryRec));
if (cfg) {
cfg->entry_type= VariableDef;
cfg->event_type= 0;
cfg->name.str= $1;
cfg->action.type= UnknownAction;
cfg->action.text= $3;
cfg->action.priv= 0;
cfg->next= NULL;
}
$$= cfg;
}
;
EventDef : EventType OPAREN OptNameSpec CPAREN
{
CfgEntryPtr cfg;
cfg= calloc(1,sizeof(CfgEntryRec));
if (cfg) {
cfg->entry_type= EventDef;
cfg->event_type= $1;
cfg->name.str= $3;
cfg->action.type= UnknownAction;
cfg->action.text= NULL;
cfg->action.priv= 0;
cfg->next= NULL;
}
$$= cfg;
}
;
EventType : BELL { $$= XkbBellNotify; }
| ACCESSX { $$= XkbAccessXNotify; }
| MESSAGE { $$= XkbActionMessage; }
;
ActionDef : ActionType OptString
{
ActDefPtr act;
act= calloc(1,sizeof(ActDefRec));
if (act) {
act->type= $1;
act->text= $2;
}
$$= act;
}
;
ActionType : NONE { $$ = NoAction; }
| IGNORE { $$ = NoAction; }
| ECHO { $$ = EchoAction; }
| PRINT_EV { $$ = PrintEvAction; }
| SHELL { $$ = ShellAction; }
| SOUND { $$ = SoundAction; }
| { $$ = UnknownAction; }
;
OptNameSpec : NameSpec { $$= $1; }
| { $$= NULL; }
;
NameSpec : Ident { $$= $1; }
| String { $$= $1; }
;
Ident : IDENT { $$= scanStr; scanStr= NULL; }
;
OptString : String { $$= $1; }
| { $$= NULL; }
;
String : STRING { $$= scanStr; scanStr= NULL; }
;
%%
int
yyerror(char *s)
{
(void)fprintf(stderr,"%s: line %d of %s\n",s,lineNum,
(scanFile?scanFile:"(unknown)"));
if (scanStr)
(void)fprintf(stderr,"last scanned symbol is: %s\n",scanStr);
return 1;
}
int
yywrap(void)
{
return 1;
}
int
CFGParseFile(FILE *file)
{
if (file) {
yyin= file;
if (yyparse()==0) {
return 1;
}
return 0;
}
return 1;
}
|
