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pcas/src/dbtools/dbLoadTemplate.y

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%{
/**************************************************************************
*
* Author: Jim Kowalkowski
*
* Experimental Physics and Industrial Control System (EPICS)
*
* Copyright 1991, the Regents of the University of California,
* and the University of Chicago Board of Governors.
*
* This software was produced under U.S. Government contracts:
* (W-7405-ENG-36) at the Los Alamos National Laboratory,
* and (W-31-109-ENG-38) at Argonne National Laboratory.
*
* Initial development by:
* The Controls and Automation Group (AT-8)
* Ground Test Accelerator
* Accelerator Technology Division
* Los Alamos National Laboratory
*
* Co-developed with
* The Controls and Computing Group
* Accelerator Systems Division
* Advanced Photon Source
* Argonne National Laboratory
*
* Modification Log:
* -----------------
* .01 10-29-93 jbk initial version
*
***********************************************************************/
#include <stdio.h>
#include <string.h>
#ifdef vxWorks
#include <memLib.h>
#include <stdlib.h>
#else
#include <memory.h>
#include <malloc.h>
#endif
#include "dbVarSub.h"
#include <epicsVersion.h>
static int line_num;
static int yyerror();
int dbLoadTemplate(char* sub_file);
#ifdef SUB_TOOL
static int sub_it();
#else
int dbLoadRecords(char* pfilename, char* pattern, char* container);
#endif
static char sub_collect[VAR_MAX_VAR_STRING];
static char** vars;
static char* db_file_name = (char*)NULL;
static int var_count,sub_count;
%}
%start template
%token <Str> WORD QUOTE
%token DBFILE
%token PATTERN
%token EQUALS
%left O_PAREN C_PAREN
%left O_BRACE C_BRACE
%union
{
int Int;
char Char;
char *Str;
double Real;
}
%%
template: templs
| subst
;
templs: templs templ
| templ
;
templ: templ_head O_BRACE subst C_BRACE
| templ_head
{
#ifndef SUB_TOOL
if(db_file_name)
dbLoadRecords(db_file_name,NULL,NULL);
else
fprintf(stderr,"Error: no db file name given\n");
#else
sub_it();
#endif
}
;
templ_head: DBFILE WORD
{
var_count=0;
if(db_file_name) free(db_file_name);
db_file_name=$2;
}
;
subst: PATTERN pattern subs
| var_subs
;
pattern: O_BRACE vars C_BRACE
{
#ifdef ERROR_STUFF
int i;
for(i=0;i<var_count;i++) fprintf(stderr,"variable=(%s)\n",vars[i]);
fprintf(stderr,"var_count=%d\n",var_count);
#endif
}
;
vars: vars var
| var
;
var: WORD
{ vars[var_count++]=$1; }
;
subs: subs sub
| sub
;
sub: WORD O_BRACE vals C_BRACE
{
sub_collect[strlen(sub_collect)-1]='\0';
#ifdef ERROR_STUFF
fprintf(stderr,"dbLoadRecords(%s)\n",sub_collect);
#endif
#ifndef SUB_TOOL
if(db_file_name)
dbLoadRecords(db_file_name,sub_collect,$1);
else
fprintf(stderr,"Error: no db file name given\n");
#else
sub_it();
#endif
free($1);
sub_collect[0]='\0';
sub_count=0;
}
| O_BRACE vals C_BRACE
{
sub_collect[strlen(sub_collect)-1]='\0';
#ifdef ERROR_STUFF
fprintf(stderr,"dbLoadRecords(%s)\n",sub_collect);
#endif
#ifndef SUB_TOOL
if(db_file_name)
dbLoadRecords(db_file_name,sub_collect,NULL);
else
fprintf(stderr,"Error: no db file name given\n");
#else
sub_it();
#endif
sub_collect[0]='\0';
sub_count=0;
}
;
vals: vals val
| val
;
val: QUOTE
{
if(sub_count<=var_count)
{
strcat(sub_collect,vars[sub_count]);
strcat(sub_collect,"=\"");
strcat(sub_collect,$1);
strcat(sub_collect,"\",");
free($1);
sub_count++;
}
}
| WORD
{
if(sub_count<=var_count)
{
strcat(sub_collect,vars[sub_count]);
strcat(sub_collect,"=");
strcat(sub_collect,$1);
strcat(sub_collect,",");
free($1);
sub_count++;
}
}
;
var_subs: var_subs var_sub
| var_sub
;
var_sub: WORD O_BRACE sub_pats C_BRACE
{
sub_collect[strlen(sub_collect)-1]='\0';
#ifdef ERROR_STUFF
fprintf(stderr,"dbLoadRecords(%s)\n",sub_collect);
#endif
#ifndef SUB_TOOL
if(db_file_name)
dbLoadRecords(db_file_name,sub_collect,$1);
else
fprintf(stderr,"Error: no db file name given\n");
#else
sub_it();
#endif
free($1);
sub_collect[0]='\0';
sub_count=0;
}
| O_BRACE sub_pats C_BRACE
{
sub_collect[strlen(sub_collect)-1]='\0';
#ifdef ERROR_STUFF
fprintf(stderr,"dbLoadRecords(%s)\n",sub_collect);
#endif
#ifndef SUB_TOOL
if(db_file_name)
dbLoadRecords(db_file_name,sub_collect,NULL);
else
fprintf(stderr,"Error: no db file name given\n");
#else
sub_it();
#endif
sub_collect[0]='\0';
sub_count=0;
}
;
sub_pats: sub_pats sub_pat
| sub_pat
;
sub_pat: WORD EQUALS WORD
{
strcat(sub_collect,$1);
strcat(sub_collect,"=");
strcat(sub_collect,$3);
strcat(sub_collect,",");
free($1); free($3);
sub_count++;
}
| WORD EQUALS QUOTE
{
strcat(sub_collect,$1);
strcat(sub_collect,"=\"");
strcat(sub_collect,$3);
strcat(sub_collect,"\",");
free($1); free($3);
sub_count++;
}
;
%%
#include "dbLoadTemplate_lex.c"
static int yyerror(str)
char *str;
{ fprintf(stderr,"templ file parse, Error line %d : %s\n",line_num, yytext); }
static int is_not_inited = 1;
int dbLoadTemplate(char* sub_file)
{
FILE *fp;
long status;
if( !sub_file || !*sub_file)
{
fprintf(stderr,"must specify variable substitution file\n");
return -1;
}
if( !(fp=fopen(sub_file,"r")) )
{
fprintf(stderr,"dbLoadTemplate: error opening sub file %s\n",sub_file);
return -1;
}
vars = (char**)malloc(VAR_MAX_VARS * sizeof(char*));
sub_collect[0]='\0';
var_count=0;
sub_count=0;
if(is_not_inited)
{
yyin=fp;
is_not_inited=0;
}
else
{
yyrestart(fp);
}
yyparse();
free(vars);
fclose(fp);
return 0;
}
#ifndef vxWorks
#ifdef SUB_TOOL
/* this is generic substitution on any file */
char* dbfile;
main(int argc, char** argv)
{
if(argc!=3)
{
fprintf(stderr,"Usage: %s file sub_file\n",argv[0]);
fprintf(stderr,"\n\twhere file is any ascii text file\n");
fprintf(stderr,"\tsub_file in the variable substitution file\n");
fprintf(stderr,"\n\tThis program uses the sub_file to perform\n");
fprintf(stderr,"\tsubstitutions on to standard out.\n");
exit(1);
}
dbfile = argv[1];
dbLoadTemplate(argv[2]);
return 0;
}
/* use sub_collect and db_file_name to do work */
static int sub_it()
{
FILE* fp;
char var_buff[500];
#ifdef ERROR_STUFF
fprintf(stderr,"In sub_it()\n");
#endif
if( *sub_collect )
{
#ifdef ERROR_STUFF
fprintf(stderr," dbInitSubst() calling\n");
#endif
dbInitSubst(sub_collect);
}
else
{
fprintf(stderr,"No valid substitutions found in table\n");
exit(1);
}
if( !(fp=fopen(dbfile,"r")) )
{
fprintf(stderr,"sub_tool: error opening file\n");
exit(1);
}
/* do the work here */
while( fgets(var_buff,200,fp)!=(char*)NULL )
{
#ifdef ERROR_STUFF
fprintf(stderr," calling dbDoSubst()\n");
#endif
dbDoSubst(var_buff,500,NULL);
fputs(var_buff,stdout);
}
#ifdef ERROR_STUFF
fprintf(stderr," calling dbFreeSubst()\n");
#endif
dbFreeSubst();
fclose(fp);
return 0;
}
#else
/* this is template loader similar to vxWorks one for .db files */
main(int argc, char** argv)
{
extern char* optarg;
extern int optind;
char* name = (char*)NULL;
int no_error = 1;
int c;
while(no_error && (c=getopt(argc,argv,"s:"))!=-1)
{
switch(c)
{
case 's':
if(name) free(name);
name = strdup(optarg);
break;
default: no_error=0; break;
}
}
if(!no_error || optind>=argc)
{
fprintf(stderr,"Usage: %s <-s name> sub_file\n",argv[0]);
fprintf(stderr,"\n\twhere name is the output database name and\n");
fprintf(stderr,"\tsub_file in the variable substitution file\n");
fprintf(stderr,"\n\tThis program used the sub_file to produce a\n");
fprintf(stderr,"\tdatabase of name name to standard out.\n");
exit(1);
}
if(!name) name = "Composite";
dbLoadTemplate(argv[1]);
}
#endif
#endif