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dbLoadTemplate.y
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dbLoadTemplate.y
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%{
/*************************************************************************\
* Copyright (c) 2006 UChicago, as Operator of Argonne
* National Laboratory.
* EPICS BASE is distributed subject to a Software License Agreement found
* in file LICENSE that is included with this distribution.
\*************************************************************************/
/* for vasprintf */
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <errno.h>
#if defined (_WIN32)
#include <io.h>
#else
#include <unistd.h>
#endif
#if defined(vxWorks)
#include <ioLib.h>
#endif
#include "macLib.h"
#include "dbmf.h"
#include "dbAccess.h"
#include "dbLoadTemplate.h"
#include "osiFileName.h"
#include "epicsVersion.h"
#include "macLib.h"
#if defined(vxWorks) || defined (_WIN32)
#include "asprintf.h"
#endif
#ifdef BASE_VERSION
#define EPICS_3_13
extern void dbLoadRecords(const char*, const char*);
#else
#include "iocsh.h"
#include "epicsExport.h"
#endif
#define EPICSVER EPICS_VERSION*10000+EPICS_REVISION*100+EPICS_MODIFICATION
#if (EPICSVER<31412)
#define dbmfStrdup(s) strcpy(dbmfMalloc(strlen((char*)(s))+1),(char*)(s))
#endif
#if (EPICSVER>=31600)
#define dbmfStrdup(s) dbmfStrdup((char*)s)
#endif
/* from runScript.c */
extern int isAbsPath(const char* filename);
static int line_num;
static int yyerror(char* str);
static char *sub_collect = NULL;
static char *sub_locals;
static char **vars = NULL;
static char *db_file_name = NULL;
static int var_count, sub_count;
static MAC_HANDLE *macHandle = NULL;
/* We allocate MAX_VAR_FACTOR chars in the sub_collect string for each
* "variable=value," segment, and will accept at most dbTemplateMaxVars
* template variables. The user can adjust that variable to increase
* the number of variables or the length allocated for the buffer.
*/
#define MAX_VAR_FACTOR 50
int dbTemplateMaxVars = 100;
%}
%start substitution_file
%token <Str> WORD QUOTE
%token DBFILE
%token PATTERN
%token GLOBAL
%token EQUALS COMMA
%left O_PAREN C_PAREN
%left O_BRACE C_BRACE
%union
{
int Int;
char Char;
char *Str;
double Real;
}
%%
substitution_file: global_or_template
| substitution_file global_or_template
;
global_or_template: global_definitions
| template_substitutions
;
global_definitions: GLOBAL O_BRACE C_BRACE
| GLOBAL O_BRACE variable_definitions C_BRACE
{
#ifdef ERROR_STUFF
fprintf(stderr, "global_definitions: %s\n", sub_collect+1);
#endif
sub_locals += strlen(sub_locals);
}
;
template_substitutions: template_filename O_BRACE C_BRACE
{
#ifdef ERROR_STUFF
fprintf(stderr, "template_substitutions: %s unused\n", db_file_name);
#endif
dbmfFree(db_file_name);
db_file_name = NULL;
}
| template_filename O_BRACE substitutions C_BRACE
{
#ifdef ERROR_STUFF
fprintf(stderr, "template_substitutions: %s finished\n", db_file_name);
#endif
dbmfFree(db_file_name);
db_file_name = NULL;
}
;
template_filename: DBFILE WORD
{
#ifdef ERROR_STUFF
fprintf(stderr, "template_filename: %s\n", $2);
#endif
var_count = 0;
db_file_name = dbmfMalloc(strlen($2)+1);
strcpy(db_file_name, $2);
dbmfFree($2);
}
| DBFILE QUOTE
{
#ifdef ERROR_STUFF
fprintf(stderr, "template_filename: \"%s\"\n", $2);
#endif
var_count = 0;
db_file_name = dbmfMalloc(strlen($2)+1);
strcpy(db_file_name, $2);
dbmfFree($2);
}
;
substitutions: pattern_substitutions
| variable_substitutions
;
pattern_substitutions: PATTERN O_BRACE C_BRACE
| PATTERN O_BRACE C_BRACE pattern_definitions
| PATTERN O_BRACE pattern_names C_BRACE
| PATTERN O_BRACE pattern_names C_BRACE pattern_definitions
;
pattern_names: pattern_name
| pattern_names COMMA
| pattern_names pattern_name
;
pattern_name: WORD
{
#ifdef ERROR_STUFF
fprintf(stderr, "pattern_name: [%d] = %s\n", var_count, $1);
#endif
if (var_count >= dbTemplateMaxVars) {
fprintf(stderr,
"More than dbTemplateMaxVars = %d macro variables used\n",
dbTemplateMaxVars);
yyerror(NULL);
}
else {
vars[var_count] = dbmfMalloc(strlen($1)+1);
strcpy(vars[var_count], $1);
var_count++;
dbmfFree($1);
}
}
;
pattern_definitions: pattern_definition
| pattern_definitions pattern_definition
;
pattern_definition: global_definitions
| O_BRACE C_BRACE
{
#ifdef ERROR_STUFF
fprintf(stderr, "pattern_definition: pattern_values empty\n");
fprintf(stderr, " dbLoadRecords(%s)\n", sub_collect+1);
#endif
dbLoadRecords(db_file_name, sub_collect+1);
}
| O_BRACE pattern_values C_BRACE
{
#ifdef ERROR_STUFF
fprintf(stderr, "pattern_definition:\n");
fprintf(stderr, " dbLoadRecords(%s)\n", sub_collect+1);
#endif
dbLoadRecords(db_file_name, sub_collect+1);
*sub_locals = '\0';
sub_count = 0;
}
| WORD O_BRACE pattern_values C_BRACE
{ /* DEPRECATED SYNTAX */
fprintf(stderr,
"dbLoadTemplate: Substitution file uses deprecated syntax.\n"
" the string '%s' on line %d that comes just before the\n"
" '{' character is extraneous and should be removed.\n",
$1, line_num);
#ifdef ERROR_STUFF
fprintf(stderr, "pattern_definition:\n");
fprintf(stderr, " dbLoadRecords(%s)\n", sub_collect+1);
#endif
dbLoadRecords(db_file_name, sub_collect+1);
dbmfFree($1);
*sub_locals = '\0';
sub_count = 0;
}
;
pattern_values: pattern_value
| pattern_values COMMA
| pattern_values pattern_value
;
pattern_value: QUOTE
{
#ifdef ERROR_STUFF
fprintf(stderr, "pattern_value: [%d] = \"%s\"\n", sub_count, $1);
#endif
if (sub_count < var_count) {
strcat(sub_locals, ",");
strcat(sub_locals, vars[sub_count]);
strcat(sub_locals, "=\"");
macExpandString(macHandle, $1, sub_locals+strlen(sub_locals), (long)(dbTemplateMaxVars * MAX_VAR_FACTOR - (sub_locals+strlen(sub_locals)-sub_collect) - 1));
strcat(sub_locals, "\"");
sub_count++;
} else {
fprintf(stderr, "dbLoadTemplate: Too many values given, line %d.\n",
line_num);
}
dbmfFree($1);
}
| WORD
{
#ifdef ERROR_STUFF
fprintf(stderr, "pattern_value: [%d] = %s\n", sub_count, $1);
#endif
if (sub_count < var_count) {
strcat(sub_locals, ",");
strcat(sub_locals, vars[sub_count]);
strcat(sub_locals, "=");
macExpandString(macHandle, $1, sub_locals+strlen(sub_locals), (long)(dbTemplateMaxVars * MAX_VAR_FACTOR - (sub_locals+strlen(sub_locals)-sub_collect)));
sub_count++;
} else {
fprintf(stderr, "dbLoadTemplate: Too many values given, line %d.\n",
line_num);
}
dbmfFree($1);
}
;
variable_substitutions: variable_substitution
| variable_substitutions variable_substitution
;
variable_substitution: global_definitions
| O_BRACE C_BRACE
{
#ifdef ERROR_STUFF
fprintf(stderr, "variable_substitution: variable_definitions empty\n");
fprintf(stderr, " dbLoadRecords(%s)\n", sub_collect+1);
#endif
dbLoadRecords(db_file_name, sub_collect+1);
}
| O_BRACE variable_definitions C_BRACE
{
#ifdef ERROR_STUFF
fprintf(stderr, "variable_substitution:\n");
fprintf(stderr, " dbLoadRecords(%s)\n", sub_collect+1);
#endif
dbLoadRecords(db_file_name, sub_collect+1);
*sub_locals = '\0';
}
| WORD O_BRACE variable_definitions C_BRACE
{ /* DEPRECATED SYNTAX */
fprintf(stderr,
"dbLoadTemplate: Substitution file uses deprecated syntax.\n"
" the string '%s' on line %d that comes just before the\n"
" '{' character is extraneous and should be removed.\n",
$1, line_num);
#ifdef ERROR_STUFF
fprintf(stderr, "variable_substitution:\n");
fprintf(stderr, " dbLoadRecords(%s)\n", sub_collect+1);
#endif
dbLoadRecords(db_file_name, sub_collect+1);
dbmfFree($1);
*sub_locals = '\0';
}
;
variable_definitions: variable_definition
| variable_definitions COMMA
| variable_definitions variable_definition
;
variable_definition: WORD EQUALS WORD
{
#ifdef ERROR_STUFF
fprintf(stderr, "variable_definition: %s = %s\n", $1, $3);
#endif
strcat(sub_locals, ",");
strcat(sub_locals, $1);
strcat(sub_locals, "=");
macExpandString(macHandle, $3, sub_locals+strlen(sub_locals), (long)(dbTemplateMaxVars * MAX_VAR_FACTOR - (sub_locals+strlen(sub_locals)-sub_collect)));
dbmfFree($1); dbmfFree($3);
}
| WORD EQUALS QUOTE
{
#ifdef ERROR_STUFF
fprintf(stderr, "variable_definition: %s = \"%s\"\n", $1, $3);
#endif
strcat(sub_locals, ",");
strcat(sub_locals, $1);
strcat(sub_locals, "=\"");
macExpandString(macHandle, $3, sub_locals+strlen(sub_locals), (long)(dbTemplateMaxVars * MAX_VAR_FACTOR - (sub_locals+strlen(sub_locals)-sub_collect) - 1));
strcat(sub_locals, "\"");
dbmfFree($1); dbmfFree($3);
}
| QUOTE EQUALS QUOTE
{
#ifdef ERROR_STUFF
fprintf(stderr, "variable_definition: \"%s\" = \"%s\"\n", $1, $3);
#endif
strcat(sub_locals, ",\"");
strcat(sub_locals, $1);
strcat(sub_locals, "\"=\"");
macExpandString(macHandle, $3, sub_locals+strlen(sub_locals), (long)(dbTemplateMaxVars * MAX_VAR_FACTOR - (sub_locals+strlen(sub_locals)-sub_collect) - 1));
strcat(sub_locals, "\"");
dbmfFree($1); dbmfFree($3);
}
;
%%
#include "dbLoadTemplate_lex.c"
static int yyerror(char* str)
{
if (str)
fprintf(stderr, "Substitution file error: %s\n", str);
else
fprintf(stderr, "Substitution file error.\n");
fprintf(stderr, "line %d: '%s'\n", line_num, yytext);
return 0;
}
static int is_not_inited = 1;
#ifndef vxWorks
#define dbLoadTemplate __dbLoadTemplate
#endif
int dbLoadTemplate(const char *sub_file, const char *cmd_collect, const char *path)
{
FILE *fp;
int i;
char** pairs;
line_num = 1;
if (!sub_file || !*sub_file) {
fprintf(stderr, "must specify variable substitution file\n");
return -1;
}
if (dbTemplateMaxVars < 1) {
fprintf(stderr,"Error: dbTemplateMaxVars = %d, must be positive\n",
dbTemplateMaxVars);
return -1;
}
fp = fopen(sub_file, "r");
if (!fp && !isAbsPath(sub_file)) {
const char *dirname, *end;
int dirlen;
char* filename;
if (!path || !*path) {
path = getenv("EPICS_DB_INCLUDE_PATH");
}
for(dirname = path; dirname != NULL; dirname = end) {
end = strchr(dirname, OSI_PATH_LIST_SEPARATOR[0]);
if (end) dirlen = (int)(end++ - dirname);
else dirlen = (int)strlen(dirname);
if (dirlen == 0) continue; /* ignore empty path elements */
if (dirlen == 1 && dirname[0] == '.') continue; /* we had . already */
filename = NULL;
if (asprintf(&filename, "%.*s/%s", dirlen, dirname, sub_file) < 0)
{
fprintf(stderr,"dbLoadTemplate: out of memory\n");
break;
}
fp = fopen(filename, "r");
free(filename);
if (fp) break;
}
}
if (!fp) {
fprintf(stderr, "dbLoadTemplate: error opening sub file %s: %s\n", sub_file, strerror(errno));
return -1;
}
macHandle = NULL;
if (macCreateHandle(&macHandle,(
#if (EPICSVER>=31501)
const
#endif
char*[]){ "", "environ", NULL, NULL }) != 0) return -1;
macSuppressWarning(macHandle, 1);
#if (0 && EPICSVER<31403)
/* Have no environment macro substitution, thus load envionment explicitly */
#ifndef vxWorks
/* In 3.14 before 3.14.3 we may have non-vxWorks without environment macro substitution */
/* non-vxWorks systems have environ instead of ppGlobalEnviron */
#define ppGlobalEnviron environ
#endif
#ifdef _WRS_VXWORKS_MAJOR
/* VxWorks 6 bug: environment is not NULL terminated ! */
/* There is a non-public counter 8 bytes after ppGlobalEnviron */
char** endEnviron = ppGlobalEnviron+((unsigned int*)&ppGlobalEnviron)[2];
if (runScriptDebug)
printf("runScript: %u environment variables\n", ((unsigned int*)&ppGlobalEnviron)[2]);
for (pairs = ppGlobalEnviron; pairs < endEnviron; pairs++)
#else
for (pairs = ppGlobalEnviron; *pairs; pairs++)
#endif
{
char* var, *eq;
if (runScriptDebug)
printf("runScript: environ %s\n", *pairs);
/* take a copy to replace '=' with null byte */
if ((var = strdup(*pairs)) == NULL) continue;
eq = strchr(var, '=');
if (eq)
{
*eq = 0;
macPutValue(macHandle, var, eq+1);
}
free(var);
}
#endif
vars = malloc(dbTemplateMaxVars * sizeof(char*));
sub_collect = malloc(dbTemplateMaxVars * MAX_VAR_FACTOR);
if (!vars || !sub_collect) {
if (macHandle) macDeleteHandle(macHandle);
free(vars);
free(sub_collect);
fclose(fp);
fprintf(stderr, "dbLoadTemplate: Out of memory!\n");
return -1;
}
strcpy(sub_collect, ",");
if (cmd_collect && *cmd_collect) {
macParseDefns(macHandle, (char*)cmd_collect, &pairs);
macInstallMacros(macHandle, pairs);
free(pairs);
strcat(sub_collect, cmd_collect);
sub_locals = sub_collect + strlen(sub_collect);
} else {
sub_locals = sub_collect;
*sub_locals = '\0';
}
var_count = 0;
sub_count = 0;
if (is_not_inited) {
yyin = fp;
is_not_inited = 0;
} else {
yyrestart(fp);
}
yyparse();
for (i = 0; i < var_count; i++) {
dbmfFree(vars[i]);
}
if (macHandle) macDeleteHandle(macHandle);
free(vars);
free(sub_collect);
vars = NULL;
fclose(fp);
if (db_file_name) {
dbmfFree(db_file_name);
db_file_name = NULL;
}
return 0;
}
#ifndef EPICS_3_13
#include "registry.h"
epicsExportAddress(int, dbTemplateMaxVars);
static const iocshFuncDef dbLoadTemplateDef = {
"dbLoadTemplate", 3, (const iocshArg *[]) {
&(iocshArg) { "filename", iocshArgString },
&(iocshArg) { "\"macro=value,...\"", iocshArgString },
&(iocshArg) { "searchpath", iocshArgString },
}};
static void dbLoadTemplateFunc(const iocshArgBuf *args)
{
dbLoadTemplate(args[0].sval, args[1].sval, args[2].sval);
}
typedef struct iocshCommand {
iocshFuncDef const *pFuncDef;
iocshCallFunc func;
struct iocshCommand *next;
}iocshCommand;
static void dbLoadTemplateRegister(void)
{
static int firstTime = 1;
if (firstTime) {
iocshRegister(&dbLoadTemplateDef, dbLoadTemplateFunc);
firstTime = 0;
}
}
epicsExportRegistrar(dbLoadTemplateRegister);
#endif