/* Some functions that can be used in state codes */


#include <stdio.h>
#include <stdlib.h> 
#include <ctype.h>
#include <string.h>
#include <regex.h> 

#include "miscFunctions4SNCs.h"

/* 
Small wrapper for getting a string out of a SNL MACRO.
If the string value is "none", then the string is replaced by an empty string 
*/
char* myMacValueGet( SS_ID ssId, char* name ) {
	char* tmpString = seq_macValueGet(ssId, name );
	if( strcmp(tmpString, "none") == 0 ) {
		  strcpy(tmpString, "");
	}
	return tmpString;
}

/* Checks if the pvName matches the regular expression using regular expression GNU C-library. */
int  pvNameMatched( char* pvName, char* regexpString ) {

	regex_t regexpObject;
	int returnStatus;
	char messageBuffer[512];

	/* Compile regular expression */
	returnStatus = regcomp(&regexpObject, regexpString, 0);
	if (returnStatus) {
		fprintf(stderr, "Could not compile regex %s\n", regexpString );
		/* Free memory allocated to the pattern buffer by regcomp() */
		regfree(&regexpObject);
		return 0;
	}

	/* Execute regular expression */
	returnStatus = regexec(&regexpObject, pvName, 0, NULL, 0);
	if (!returnStatus) {
		/* Free memory allocated to the pattern buffer by regcomp() */
		regfree(&regexpObject);
		return 1;
	}
	else if (returnStatus == REG_NOMATCH) {
		/* Free memory allocated to the pattern buffer by regcomp() */
		regfree(&regexpObject);
		return 0;;
	}
	else {
		regerror(returnStatus, &regexpObject, messageBuffer, sizeof(messageBuffer));
		fprintf(stderr, "Regex match failed: %s\n", messageBuffer);
		/* Free memory allocated to the pattern buffer by regcomp() */
		regfree(&regexpObject);
		return 0;
	}
}