%{
#include <stdio.h>
#include <unistd.h>
#include <math.h>
#include <string.h>
static char rcsid[] = "$Id: olmenu-proto1.y,v 1.1.1.1 1999/09/26 12:34:39 mib Exp $";
#define YYERROR_VERBOSE 1
extern FILE *yyin;
extern int errno;
extern char *optarg;
extern int optind, opterr, optopt;
int yydebug;
%}
%token 
%token       BACK_SELN
%token       COLUMNS
%token       DEFAULT
%token       DIRMENU
%token       END
%token       EXIT
%token       EXIT_NO_CONFIRM
%token       FLIPDRAG
%token       FLIPFOCUS
%token       FULL_RESTORE_SIZE_SELN
%token       INCLUDE
%token       MENU
%token       MOVE_DESKTOP
%token       NOP
%token       OPEN_CLOSE_SELN
%token       QUIT_SELN
%token       PIN
%token       PROPERTIES
%token       REFRESH
%token       REREAD_MENU_FILE
%token       RESTART
%token       SAVE_WORKSPACE
%token       SEPARATOR
%token       START_DSDM
%token       STICK_UNSTICK_SELN
%token       STOP_DSDM
%token       TITLE
%token       WINMENU
%token       WMEXIT
%token <str> LABEL
%token <str> EXEC
%token <num> INT

%type  <str> filename 
%type  <str> label

%union {
	char *str;
	int  num;
}

%start menufile

%%
menufile	:	menu_items
				{ @1; /* See: adding line numbers */ }
		;
menu_items	:	menu_item
		|	menu_items menu_item
		;
menu_item	:	menu_command '\n'
		|	option       '\n'
		|	SEPARATOR    '\n'
		|	menu_file    '\n'
		|	submenu
		|	             '\n'
		;
menu_file	:	label default include filename
				{ }
		;
filename	:	EXEC
		;
include		:	MENU
		|	INCLUDE
		;
submenu		:	label default MENU '\n' menu_items end '\n'
				{ }
		;
default		:	/* empty */
		|	DEFAULT
		;
end		:	label END pin
				{ }
		;
pin		:	/* emtpy */
		|	PIN
		;
menu_command	:	label  default  EXEC
				{ }
		|	label  default  olvwm_cmd
				{ }
		|	label  default  olvwm_cmd_arg
				{ }
		;
option		:	label  COLUMNS  INT
				{ }
		|	label  TITLE  pin
				{ }
		;
label		:	LABEL
		|	'<'  LABEL  '>'
				{ $$=$2; }
		;
olvwm_cmd	:	BACK_SELN
		|	EXIT
		|	EXIT_NO_CONFIRM
		|	FLIPDRAG
		|	FLIPFOCUS
		|	FULL_RESTORE_SIZE_SELN
		|	NOP
		|	OPEN_CLOSE_SELN
		|	QUIT_SELN
		|	PROPERTIES
		|	REFRESH
		|	REREAD_MENU_FILE
		|	RESTART
		|	SAVE_WORKSPACE
		|	SEPARATOR
		|	START_DSDM
		|	STICK_UNSTICK_SELN
		|	STOP_DSDM
		|	WINMENU
		|	WMEXIT
		;
olvwm_cmd_arg	:	DIRMENU EXEC
		|	MOVE_DESKTOP INT
		|	WINMENU	INT
		;
%%
/*
   The openwin-menu syntax is somewhat loose, in that
   the options TITLE, COLUMNS etc may appear anywhere in a
   submenu, even between other menu items. This is convinient from
   the point of view of our parser,
   Stylistically, it would be better to constrain options like TITLE
   to appearing before any menu commands, but we want to be "compatible".
*/

int main(int argc,char *argv[]) {
	char c;
	while( (c=getopt(argc, argv,"v")) != EOF ) {
		switch(c) {
			case 'v':
				yydebug=1;
				break;
		}
	}
        if ( argc > optind ) {
                if ( (yyin = fopen(argv[optind],"r")) == 0 ) {
                        perror(argv[optind]);
                        exit(1);
                }
        }
	return(yyparse());
}

int yywrap() {
	return(1);
}

int yyerror(char *err) {
	fprintf(stderr, "%s\n",err);
}