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/* [ICS VERSION STRING: unknown] */
// Unit test program to test wildcarding in the node description
// Various debugging and timing can be turned on/off with #defines below
// Compile:  gcc wildcardExample.c -ltr


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

#define DEBUG_ON
//#define TIMING

typedef int bool;
#define true 1
#define false 0
#define MAX_STRING_LENGTH 20
#define MAX_BRACKETS_SUPPORTED 5

typedef struct _RegexParseInfo{
  int totalGroups;
  bool portRangeDefined;
  int portNum1;
  int portNum2;
  int lead0sPort1;
  int lead0sPort2;

  int numBracketRangesDefined;
  int number1[MAX_BRACKETS_SUPPORTED];
  int numDigitsNum1[MAX_BRACKETS_SUPPORTED];  
  int number2[MAX_BRACKETS_SUPPORTED];
  int numDigitsNum2[MAX_BRACKETS_SUPPORTED]; 
  int leading0sNum1[MAX_BRACKETS_SUPPORTED];
  int leading0sNum2[MAX_BRACKETS_SUPPORTED];
  int bracketGroupNum[MAX_BRACKETS_SUPPORTED];
} RegexParseInfo_t;


bool convertWildcardedString(char* inStr, char* outStr, RegexParseInfo_t* regexInfo);
bool processBracketSyntax(char* inputStr, int inputLen, int* curIdxPtr, RegexParseInfo_t* regexInfo, bool isPortRange);
bool isCharValid(char inChar);
void clearRegexStruct(RegexParseInfo_t* regexInfo);
void printRegexStruct(RegexParseInfo_t* regexInfo);
bool isNumberInRange(char* number, RegexParseInfo_t* regexInfo, int bracketIdx);
void populateExpressionsToTest(char* expr[]);
void populateNodeNames(char* nodeNamesArray[]);

int main()
{
#ifdef TIMING
  #ifdef DEBUG_ON
  printf("SHOULDN'T RUN TIMING WITH DEBUG TURNED ON\n");
  exit(1);
  #endif
#endif

  //Populate node names and expressions to test
  char* expr[50];
  populateExpressionsToTest(&expr[0]);
  char* nodeNamesArray[55];
  populateNodeNames(&nodeNamesArray[0]);

  //initialize variables
  bool isMatch = false;
  size_t maxGroups = 10;
  regmatch_t groupArray[maxGroups];
  RegexParseInfo_t regexInfo;

#ifdef DEBUG_ON
  printf("Node Names in Sample Application used for Node Description matching\n");
  int tempIdx;
  for (tempIdx=0; tempIdx<50; tempIdx++) {
    printf("%s\n", nodeNamesArray[tempIdx]);
  }
#endif

  //
  // Loop on all node description expressions to evaluate against all node names
  //

  int exprIdx;
  for (exprIdx=0; exprIdx<50; exprIdx++) {
  //for (exprIdx=0; exprIdx<1; exprIdx++) {

    //variables needed per regular expression we test
    char regexString[100] = "";
    bool isSyntaxValid = false;

    //clear regexInfo from previous expression
    clearRegexStruct(&regexInfo);

    isSyntaxValid = convertWildcardedString(expr[exprIdx], &regexString[0], &regexInfo);

#ifdef DEBUG_ON
    printf("\nProcessing nodeDescription = %s\n", expr[exprIdx]); //regular expression:  %s, &regexString[0]
    //printf("\nProcessing nodeDescription = %s   regular expression:  %s\n", expr[exprIdx], &regexString[0]);
#endif

    //compile into regular expression if there aren't any syntax issues
    if (isSyntaxValid) {

      regex_t regexCompiled;
      if (regcomp(&regexCompiled, &regexString[0], REG_EXTENDED)) {
	printf("Could not compile regular expression  %s\n", &regexString[0]);
	return false;
      }


      //
      // Evaluate all nodes
      //

#ifdef TIMING
      struct timespec time1,time2;
      clock_gettime(CLOCK_REALTIME, &time1);

      int extraLoopIdx;
      for (extraLoopIdx=0; extraLoopIdx<10000; extraLoopIdx++) { //simulate 500k nodes
	//for (extraLoopIdx=0; extraLoopIdx<200000; extraLoopIdx++) { //simulate 10M nodes
#endif

      int nodeIdx;
      for (nodeIdx=0; nodeIdx<55; nodeIdx++) {
	//for (nodeIdx=0; nodeIdx<1; nodeIdx++) {

	if (regexec(&regexCompiled, nodeNamesArray[nodeIdx], maxGroups, groupArray, 0) == 0)
    	  isMatch = true;
	else
	  isMatch = false;


	if (isMatch) {

	  //evaluate all the bracket ranges defined
	  int bracketIdx;
	  for (bracketIdx=0; bracketIdx<regexInfo.numBracketRangesDefined;bracketIdx++) {

	    int bracketGroupNum = regexInfo.bracketGroupNum[bracketIdx];

	    //verify the string index of the group we are evaluting isn't -1 
	    if (groupArray[bracketGroupNum].rm_so != (size_t)-1) {

	      //Make a copy of the node name, which we will manipulate to extract the number out of using the regmatch_t struct fields
	      char nodeName[strlen(nodeNamesArray[nodeIdx]) + 1];
	      cs_strlcpy(nodeName, nodeNamesArray[nodeIdx], sizeof(nodeName));
	      nodeName[groupArray[bracketGroupNum].rm_eo] = 0;

	      //Get the number to evalute by incrementing the node name to the position of the number
	      char* numberToEval = nodeName + groupArray[bracketGroupNum].rm_so;

	      isMatch = isNumberInRange(numberToEval, &regexInfo, bracketIdx);

	      if (!isMatch)
		break;
	    }
	    else {
	      printf("ERROR: Invalid group number for bracket evaluation\n");
	      isMatch = false;
	    }

	  } //loop on all bracket ranges defined

	} //end isMatch check

#ifdef DEBUG_ON
	if (isMatch)
	  printf("MATCH:      %s\n", nodeNamesArray[nodeIdx]);
#endif

	//TODO - if match and port number range defined, need to use port numbers to set bits (will do when we fold into the SM)

      } //end loop on all node names


#ifdef TIMING
      } //end additional loop

      clock_gettime(CLOCK_REALTIME, &time2);

      struct timespec diff;
      if ( (time2.tv_nsec-time1.tv_nsec) < 0) {
	diff.tv_sec = (float)(time2.tv_sec-time1.tv_sec-1);
	diff.tv_nsec = (float)(1000000000+time2.tv_nsec-time1.tv_nsec);
      }
      else {
	diff.tv_sec = (float)(time2.tv_sec-time1.tv_sec);
	diff.tv_nsec = (float)(time2.tv_nsec-time1.tv_nsec);
      }
      printf("ExprIdx: %d   dif %f : %f sec:micro)\n", exprIdx, (float)diff.tv_sec, (float)diff.tv_nsec/1000);
#endif

      regfree(&regexCompiled);
    } //end isSyntaxValid check

#ifdef TIMING
    else {
      printf("ExprIdx %d INVALID\n", exprIdx);
    }
#endif

#ifdef DEBUG_ON
    else {
      printf("Node description syntax INVALID\n");
    }
#endif

  } //end for loop on expressions

  return 0;
}

bool convertWildcardedString(char* inStr, char* outStr, RegexParseInfo_t* regexInfo)
{
  //Convert nodeDesc into regular expression syntax
  //if nodeDesc doesn't start with *, insert ^ at front
  //if nodeDesc doesn't end with *, insert $ at the end
  char* starWildCard = "(([_,=.a-z0-9A-Z[:space:]-])*)";
  int lengthStarWildCard = strlen(starWildCard);
  char* quesWildCard = "(([_,=.a-z0-9A-Z[:space:]-])?)";
  int lengthQuesWildCard = strlen(quesWildCard);
  char* bracketSyntax = "([0-9]+)";
  int lengthBracketSyntax = strlen(bracketSyntax);

  bool isSyntaxValid = true;
  int inStrIdx = 0;
  int outStrIdx = 0;
  int inputLen = strlen(inStr);
  bool needToEvaluateNumbersInReturn = false;

  bool firstBracketValid = true;
  bool firstTimeThroughLoop = true;

  while (inStrIdx<inputLen) {

    //Enforce rules for first character
    if (inStrIdx == 0) {

      if (inStr[inStrIdx] == '?') {

	//walk buffer to find next non ?..if *, insert ^ (?s will be ignored below when we process the characters)
	bool breakLoop=false;
	int curIdx = inStrIdx+1;
	while (!breakLoop) {

	  if (curIdx < inputLen) {

	    if (inStr[curIdx] != '?') {

	      if (inStr[inStrIdx] != '*') { 
		//append ^ character
		strcat(&outStr[outStrIdx], "^");
		outStrIdx++;
	      }
	      breakLoop=true;
	    }
	    else
	      curIdx++;
	  }
	  else
	    breakLoop=true;
	}

      }
      else if (inStr[inStrIdx] != '*') {
	//if first character not '*', append ^ character
	strcat(&outStr[outStrIdx], "^");
	outStrIdx++;
      }

      if (inStr[inStrIdx] == '[') {
	//if first character '[', make sure there is another valid character after the ']'
	//set firstBracketValid to false until we process another valid character
	firstBracketValid = false;
      }
      
    }

    //if not the first time through loop, and we process a valid character, set the firstBracketValid flag to true
    if ( (!firstTimeThroughLoop) && 
	 ((inStr[inStrIdx] != '[') || (inStr[inStrIdx] != ':')) )
      firstBracketValid = true;


    //Process characters
    if (inStr[inStrIdx] == '*') {

      //append starWildCard to outStr
      strcat(&outStr[outStrIdx], starWildCard);
      outStrIdx += lengthStarWildCard;
      regexInfo->totalGroups+=2;

      //look ahead till next non wildcard value.... ignore all '*' or '?'...if next non wildcard is '[', syntax error
      bool breakLoop=false;
      int curIdx = inStrIdx+1;
      while (!breakLoop) {
	if (curIdx < inputLen) {

	  if ( (inStr[curIdx] == '*') || (inStr[curIdx] == '?') ) {
	    //increment index past this
	    inStrIdx++;
	  }
	  else if (inStr[curIdx] == '[') {
	    isSyntaxValid = false;
	    break;
	  }
	  else
	    breakLoop=true;

	  curIdx++;
	}
	else
	  breakLoop=true;
      }

    }
    else if (inStr[inStrIdx] == '?') {

      bool skipQues = false;

      //look ahead till next non ? value.... ignore if it is a '*'...if next non wildcard is '[', syntax error
      bool breakLoop=false;
      int curIdx = inStrIdx+1;
      while (!breakLoop) {

	if (curIdx < inputLen) {

	  if (inStr[curIdx] != '?') {

	    if (inStr[curIdx] == '*') {
	      //increment index past this ?
	      skipQues = true;
	    }
	    else if (inStr[curIdx] == '[') {
	      isSyntaxValid = false;
	    }

	    breakLoop=true;

	  }
	  else
	    curIdx++;
	}
	else
	  breakLoop=true;
      }
	  
      if (!skipQues) {
	//append quesWildCard to outStr
	strcat(&outStr[outStrIdx], quesWildCard);
	outStrIdx += lengthQuesWildCard;
	regexInfo->totalGroups+=2;
      }

    }
    else if (inStr[inStrIdx] == '[') {

      bool isBracketSyntaxValid = processBracketSyntax(&inStr[0], inputLen, &inStrIdx, regexInfo, false);

      if (isBracketSyntaxValid) {
	//append bracketWildCard to outStr
	strcat(&outStr[outStrIdx], bracketSyntax);
	outStrIdx += lengthBracketSyntax;
      }
      else {
	isSyntaxValid = false;
      }

    }
    else if (inStr[inStrIdx] == ':') {
      //:[##-##] must be last in input sequence
      //skip past the ':'
      inStrIdx++;

      //next character has to be '['.....else, error
      if (inStr[inStrIdx] == '[') {
	  
	isSyntaxValid = processBracketSyntax(&inStr[0], inputLen, &inStrIdx, regexInfo, true);

	//continue processing if syntax is valid
	if (isSyntaxValid) {

	  if (inStrIdx+1 >= inputLen) {
	    //append $ character if [] is last in sequence
	    strcat(&outStr[outStrIdx], "$");
	    outStrIdx++;
	  }
	  else {
	    isSyntaxValid = false;
	  }
	    
	}
      }
      else {
	isSyntaxValid = false;
      }

    }
    //handle '.'
    else if (inStr[inStrIdx] == '.') {
      strcat(&outStr[outStrIdx], "\\");
      outStrIdx++;
      strncpy(&outStr[outStrIdx], &inStr[inStrIdx],1);
      outStrIdx++;
    }
    else { //all other character inputs

      if (isCharValid(inStr[inStrIdx])) {
	  //copy the character from the input string and increment outStrIdx
	  strncpy(&outStr[outStrIdx], &inStr[inStrIdx],1);
	  outStrIdx++;
      }
      else {
	isSyntaxValid = false;
      }

    }

    if (!isSyntaxValid)
      break;

    //Enforce rules for last character
    if (inStrIdx == inputLen-1) { 

      //if not '*', append $
      if (inStr[inStrIdx] != '*') {
	//append $ character
	strcat(&outStr[outStrIdx], "$");
	outStrIdx++;
      }

    }

    //increment input string index
    inStrIdx++;

    firstTimeThroughLoop = false;

  } //end processing input sequence

  //NUL terminate the outStr
  outStr[outStrIdx] = '\0';


  if (!firstBracketValid)
    isSyntaxValid = false;

  return isSyntaxValid;
}


bool isCharValid(char inChar) {

  bool isValid = false;

  if ( (inChar >= '0' && inChar  <= '9') ||
       (inChar >= 'a' && inChar  <= 'z') ||
       (inChar >= 'A' && inChar  <= 'Z') ||
       (inChar == '-') ||
       (inChar == ',') ||
       (inChar == '=') ||
       (inChar == '_') ||
       (inChar == ' ') ||
       (inChar == '.') ) {
    isValid = true;
  }

  return isValid;
}


bool processBracketSyntax(char* inputStr, int inputLen, int* curIdxPtr, RegexParseInfo_t* regexInfo, bool isPortRange) {

  bool isSyntaxValid = true;
  int maxNumDigits = 6; //5 + '\0'

  //increment curIdx past the '['
  int curIdx = *curIdxPtr;
  curIdx++;

  //flow control variables
  bool parsingNum1 = true;
  bool countingLeadingZeros = true;

  //will use these to build the regular expression
  int leadingZeroNum1=0, leadingZeroNum2=0;
  int numDigitsNum1=0, numDigitsNum2=0;
  char* num1charPtr;
  char* num2charPtr;

  //loop to process the rest of the [##-##] syntax
  int tempNumDigits = 0;
  int tempLeading0s = 0;
  while (curIdx<inputLen) {
    //look for "-" character
    if ( (parsingNum1) && (inputStr[curIdx] == '-') ) {

      //end of 1st number, switch to start parsing the 2nd number
      parsingNum1 = false;
      leadingZeroNum1 = tempLeading0s;
      numDigitsNum1 = tempNumDigits;

      //handle a range that starts with 0
      if ( (numDigitsNum1 == 0) && (leadingZeroNum1==1) ) {
	numDigitsNum1 = 1;
	leadingZeroNum1 = 0;

	//set num1charPtr 
	num1charPtr = &inputStr[curIdx-1];
      }

      //transition to start process 2nd number
      tempLeading0s = 0;
      tempNumDigits = 0;
      curIdx++;
      countingLeadingZeros = true;
    }
    else if ( (!parsingNum1) && (inputStr[curIdx] == ']') ) {
      //end of valid bracket expression
      leadingZeroNum2 = tempLeading0s;
      numDigitsNum2 = tempNumDigits;

      //update current index pointer
      *curIdxPtr = curIdx;

      //validate number information to this point
      if ( (numDigitsNum1 <= 0) || 
	   (numDigitsNum2 <= 0) ||
	   (numDigitsNum1>maxNumDigits-1) || 
	   (numDigitsNum2>maxNumDigits-1) ||
	   (numDigitsNum1 > numDigitsNum2) ||
	   ((numDigitsNum1==numDigitsNum2) && (leadingZeroNum1 != leadingZeroNum2)) ) {
	isSyntaxValid = false;
      }

      break;
    }
    else if (inputStr[curIdx] >= '0' &&inputStr[curIdx]  <= '9') {

      //count number of leading 0s
      if ( (inputStr[curIdx] == '0') && (countingLeadingZeros) ) {
	tempLeading0s++;
      }
      else {
	//if first non-zero number
	if (tempNumDigits == 0) {
	  countingLeadingZeros = false;

	  if (parsingNum1)
	    num1charPtr = &inputStr[curIdx];
	  else
	    num2charPtr = &inputStr[curIdx];
	}

	tempNumDigits++;
      }

      curIdx++;

    }
    else {
      //if any other character, input is invalid
      isSyntaxValid = false;
      break;
    }
  } //end loop through input syntax


  //translate numbers to ints and save them off
  if (isSyntaxValid) {

    //convert 1st number
    int size = numDigitsNum1+1;
    char firstNum[maxNumDigits];
    firstNum[size-1] = '\0';
    strncpy(&firstNum[0], num1charPtr, numDigitsNum1);
    int num1 = atoi(&firstNum[0]);

    //convert 2nd number
    size = numDigitsNum2+1;
    char secondNum[maxNumDigits];
    secondNum[size-1] = '\0';
    strncpy(&secondNum[0], num2charPtr, numDigitsNum2);
    int num2 = atoi(&secondNum[0]);

    //validate num2 isn't larger than num1
    if (num1 > num2)
      isSyntaxValid = false;

    //set regexInfo fields
    regexInfo->totalGroups++;

    if (isPortRange) {
      regexInfo->portRangeDefined = true;
      regexInfo->portNum1 = num1;
      regexInfo->portNum2 = num2;
      regexInfo->lead0sPort1 = leadingZeroNum1;
      regexInfo->lead0sPort2 = leadingZeroNum2;
    }
    else {
      regexInfo->numBracketRangesDefined++;

      int idx = regexInfo->numBracketRangesDefined-1;
      regexInfo->number1[idx] = num1;
      regexInfo->numDigitsNum1[idx] = numDigitsNum1;
      regexInfo->number2[idx] = num2;
      regexInfo->numDigitsNum2[idx] = numDigitsNum2;
      regexInfo->leading0sNum1[idx] = leadingZeroNum1;
      regexInfo->leading0sNum2[idx] = leadingZeroNum2;
      regexInfo->bracketGroupNum[idx] = regexInfo->totalGroups;
    }

  }

  return isSyntaxValid;

}


bool isNumberInRange(char* number, RegexParseInfo_t* regexInfo, int bracketIdx) {

  bool isValid = true;
  bool isInRange = false;

  //local/temp and flow control variables
  int numDigits = 0;
  int numberLeading0s = 0;
  int curIdx = 0;
  int inputLen = strlen(number);

  bool countingLeadingZeros = true;
  char* charPtr;

  //convert number from char* to int (count leading 0s)
  while (curIdx<inputLen) {
    
    //verify this index is a valid number
    if (number[curIdx] >= '0' &&number[curIdx]  <= '9') {

      //count number of leading 0s
      if ( (number[curIdx] == '0') && (countingLeadingZeros) )
	numberLeading0s++;
      else {

	if (numDigits == 0) {
	  countingLeadingZeros = false;
  	  charPtr = &number[curIdx];
	}

	numDigits++;
      }

      curIdx++;
    }
    else {
      isValid = false;
      break;
    }
  }

  if (isValid) {
    int maxNumDigits = 6; //5 + '\0'
    char numArray[maxNumDigits];

    int size = numDigits+1;
    numArray[size-1] = '\0';
    strncpy(&numArray[0], charPtr, numDigits);
    int numberToEvalute = atoi(&numArray[0]);

    if ( (regexInfo->leading0sNum1[bracketIdx] == 0) && (regexInfo->leading0sNum1[bracketIdx] == 0) && (numberLeading0s == 0) ) {
      //no leading zeros, just do simple comparison
      if ( (numberToEvalute >= regexInfo->number1[bracketIdx]) && (numberToEvalute <= regexInfo->number2[bracketIdx]) )
	isInRange = true;
    }
    else {
      //evaluate leading 0s
      int numToEvalDigitsDiff = numDigits - regexInfo->numDigitsNum1[bracketIdx];
      int num0sToExpect = regexInfo->leading0sNum1[bracketIdx] - numToEvalDigitsDiff;

      if (num0sToExpect == numberLeading0s) {
	//finish evaluation
	if ( (numberToEvalute >= regexInfo->number1[bracketIdx]) && (numberToEvalute <= regexInfo->number2[bracketIdx]) )
	  isInRange = true;
      }
    }

  }

  return isInRange;
}


void clearRegexStruct(RegexParseInfo_t* regexInfo) {

  regexInfo->totalGroups = 0;

  //clear port range fields
  regexInfo->portRangeDefined = false;
  regexInfo->portNum1 = 0;
  regexInfo->portNum2 = 0;
  regexInfo->lead0sPort1 = 0;
  regexInfo->lead0sPort2 = 0;

  //clear number range bracket fields
  regexInfo->numBracketRangesDefined = 0;

  int idx;
  for (idx=0; idx<MAX_BRACKETS_SUPPORTED; idx++) {
    regexInfo->number1[idx] = 0;
    regexInfo->number2[idx] = 0;
    regexInfo->leading0sNum1[idx] = 0;
    regexInfo->leading0sNum2[idx] = 0;
    regexInfo->bracketGroupNum[idx] = 0;
  }
}

void printRegexStruct(RegexParseInfo_t* regexInfo) {

  if ( (regexInfo->portRangeDefined == false) && (regexInfo->numBracketRangesDefined == 0) ) {
    printf("Regex Info Struct: No port ranges or brackets defined\n");
  }
  else {
    printf("Regex Info Struct:\n");

    int idx;
    for (idx=0; idx<regexInfo->numBracketRangesDefined; idx++) {
      printf("Bracket Range Info %d:\n", idx);
      printf("             Num1: %d\n", regexInfo->number1[idx]);
      printf("             Num2: %d\n", regexInfo->number2[idx]);
      printf("    Leading0sNum1: %d\n", regexInfo->leading0sNum1[idx]);
      printf("    Leading0sNum1: %d\n", regexInfo->leading0sNum2[idx]);
      printf("         GroupNum: %d\n", regexInfo->bracketGroupNum[idx]);
    }

    if (regexInfo->portRangeDefined == true) {
      printf("Port Range Info:\n");
      printf("         PortNum1: %d\n", regexInfo->portNum1);
      printf("         PortNum2: %d\n", regexInfo->portNum2);
      printf("    Leading0sNum1: %d\n", regexInfo->lead0sPort1);
      printf("    Leading0sNum2: %d\n", regexInfo->lead0sPort2);
    }
  }

}

void populateExpressionsToTest(char* expr[]) {
  expr[0] = "switch?";
  expr[1] = "switch*";
  expr[2] = "*switch?";
  expr[3] = "?switch*";
  expr[4] = "switch*1";
  expr[5] = "node-name[00124-01202]";
  expr[6] = "node-name[0218-3265]";
  expr[7] = "node-name[0218-0326]";
  expr[8] = "node-name[0218-3002]";
  expr[9] = "node-name[002-042]";
  expr[10] = "node[2-4]-clustA";
  expr[11] = "switch1:[1-48]";
  expr[12] = "switch:[01-24]";
  expr[13] = "switch*:[1-24]";
  expr[14] = "*switch?:[4-5]";
  expr[15] = "node-name[0218-3002]:[1-3]";
  expr[16] = "chassis[1-5]-node[001-100]:[1-48]";
  expr[17] = "?swi*h[3-20]";
  expr[18] = "[1-10]switch";
  expr[19] = "switch?1";
  expr[20] = "switch*?1";
  expr[21] = "switch??";
  expr[22] = "chassis[01-10]-node[49-51]:[1-48]";
  expr[23] = "node.chassis[01-99]";
  expr[24] = "switch-[1-20]";
  expr[25] = "switch?*"; //ignore ?
  expr[26] = "switch*?"; //ignore ?
  expr[27] = "switch**"; //should produce same as switch*
  expr[28] = "switch**?"; //should produce same as switch*
  expr[29] = "?*switch"; //should produce same as *switch

  //error cases
  expr[30] = "(switch?";
  expr[31] = ")switch?";
  expr[32] = "{switch?";
  expr[33] = "}switch?";
  expr[34] = "$switch?";
  expr[35] = "+switch?";
  expr[36] = "|switch?";
  expr[37] = "node[413-200]";
  expr[38] = "node[0200-400]";
  expr[39] = "node[ab-401]";
  expr[40] = "[10-20]";
  expr[41] = "node[a";
  expr[42] = "[]";
  expr[43] = "nodeName[]"; 
  expr[44] = "^switch?";
  expr[45] = "switch*?[1-15]";
  expr[46] = "switch*[3-20]";
  expr[47] = "node*[1-24]";
  expr[48] = "\\switch?";
  expr[49] = "/switch?";

}

void populateNodeNames(char* nodeNamesArray[]) {
  nodeNamesArray[0] = "switch1";
  nodeNamesArray[1] = "switch";
  nodeNamesArray[2] = "switch11";
  nodeNamesArray[3] = "switch20";
  nodeNamesArray[4] = "9switch1";
  nodeNamesArray[5] = "switchabc1";
  nodeNamesArray[6] = "switchdef10";
  nodeNamesArray[7] = "switchhij11";
  nodeNamesArray[8] = "xyzswitch2";
  nodeNamesArray[9] = "a2bswitch";
  nodeNamesArray[10] = "node-name0115";
  nodeNamesArray[11] = "node-name125";
  nodeNamesArray[12] = "node-name299";
  nodeNamesArray[13] = "node-name324";
  nodeNamesArray[14] = "node-name0218";
  nodeNamesArray[15] = "node-name0324";
  nodeNamesArray[16] = "node-name3001";
  nodeNamesArray[17] = "node-name0217";
  nodeNamesArray[18] = "node-name00218";
  nodeNamesArray[19] = "node-name00324";
  nodeNamesArray[20] = "node-name01201";
  nodeNamesArray[21] = "node-name002";
  nodeNamesArray[22] = "node-name031";
  nodeNamesArray[23] = "node-name01";
  nodeNamesArray[24] = "node-name02";
  nodeNamesArray[25] = "node-name040";
  nodeNamesArray[26] = "node-name042";
  nodeNamesArray[27] = "node1-clustA";
  nodeNamesArray[28] = "node2-clustA";
  nodeNamesArray[29] = "node3-clustA";
  nodeNamesArray[30] = "node4-clustA";
  nodeNamesArray[31] = "node5.clustA";
  nodeNamesArray[32] = "chassis3-node050";
  nodeNamesArray[33] = "chassis02-node50";
  nodeNamesArray[34] = "chassis003-node50";
  nodeNamesArray[35] = "chassis5-node050";
  nodeNamesArray[36] = "chassis05-node50";
  nodeNamesArray[37] = "5switch";
  nodeNamesArray[38] = "node.chassis5";
  nodeNamesArray[39] = "nodeKchassis06";
  nodeNamesArray[40] = "node.chassis99";
  nodeNamesArray[41] = "switch-11";
  nodeNamesArray[42] = "switch-01";
  nodeNamesArray[43] = "node001-clustA";
  nodeNamesArray[44] = "node02-clustA";
  nodeNamesArray[45] = "node003-clustA";
  nodeNamesArray[46] = "node04-clustA";
  nodeNamesArray[47] = "node05.clustA";
  nodeNamesArray[48] = "chassis3-node5";
  nodeNamesArray[49] = "chassis7-node50";
  nodeNamesArray[50] = "switch ";
  nodeNamesArray[51] = "switch  ";
  nodeNamesArray[52] = "    switch ";
  nodeNamesArray[53] = " switch  1";
  nodeNamesArray[54] = "switch 1";
}
