/*
  How to execute the program?
  1. Compile and create executable
     gcc -Wall inputgen.c -o inputgen
  2. Execute the program with two numbers
     ./inputgen 20 5 => produce twenty lines, each with 5 words
  3. To save the output to a file
     ./inputgen 20 5 > datafile
 */
/*
   ECE 264
   Yung-Hsiang Lu, Purdue 
   Spring 2009
*/

#include <time.h>
#include <stdio.h>
#include <stdlib.h>
char * firstNames[] = {
  "Aaron",
  "Amy",     
  "Andrew",   
  "Angela",
  "Anthony", 
  "Ava",  
  "Bill", 
  "Catherine",
  "Cathy",
  "Charles",
  "David", 
  "Donna",
  "Elizabeth", 
  "Emily", 
  "Ethan",
  "Gerry",
  "Isabella",
  "Jacob", 
  "James",
  "Jean",
  "Jennifer",
  "Jessica", 
  "John",
  "Karen",
  "Kathy",
  "Larry",
  "Linda",
  "Lisa", 
  "Mark", 
  "Mary", 
  "Matthew", 
  "Melissa",
  "Mike",
  "Nancy",
  "Paul",
  "Richard",
  "Robert",
  "Sharon",
  "Sophia", 
  "Stacey",
  "Susan",
  "Tina",
  "Tom"
};
char * lastNames [] = {
  "Anderson",
  "Baker",
  "Bell",
  "Black",
  "Brown",
  "Collins",
  "Cook",
  "Cox",
  "Davis",
  "Gray",
  "Dyer",
  "Green",
  "Harris",
  "Hill",
  "Hunt",
  "Jackson",
  "Johnson",
  "Jones",
  "Kellar",
  "Lee",
  "Martin",
  "Max",
  "Mitchell",
  "Miller",
  "Moore",
  "Morgon",
  "Parker",
  "Poore",
  "Rowe",
  "Sharp",
  "Simpson",
  "Smith",
  "Taylor",
  "Thomas",
  "Thompson",
  "Wabash",
  "Walker",
  "White",
  "Wilkers",
  "Williams",
  "Wilson",
  "Woods",
  "Xu",
  "Young",
  "Zachary",
  "Zheng"
};

char * streetNames [] =  {
  "ArmstrongAvenue",
  "BakerStreet",
  "CanalStreet",
  "ClevelandStreet",
  "DowAvenue",
  "EastRoad",
  "FairfaxAvenue",
  "FirstStreet",
  "ForestRoad",
  "GoldenCourt",
  "HarborAvenue",
  "HoustonStreet",
  "LakeviewAvenue",
  "LexingtonAvenue",
  "MadisonAvenue",
  "MainStreet",
  "MapleStreet",
  "NorthwesternAvenue",
  "OakRoad",
  "ParkRoad",
  "PineAvenue",
  "ScottStreet",
  "SecondStreet",
  "StevensonStreet",
  "StocktonStreet",
  "ThirdStreet",
  "TimesSquare",
  "UniversityAvenue",
  "VictorCourt",
  "WallStreet",
  "WashingtonStreet",
  "WoodsAvenue"
};

const int numFirstNames = sizeof(firstNames) / sizeof(char *);
const int numLastNames = sizeof(lastNames) / sizeof(char *);
const int numStreetNames = sizeof(streetNames) / sizeof(char *);

void printAWord()
{
  switch (rand() % 3)
    {
    case 0:
      printf("%s", firstNames[rand() % numFirstNames]);
      break;
    case 1:
      printf("%s", lastNames[rand() % numLastNames]); 
      break;
    case 2:
      printf("%s", streetNames[rand() % numStreetNames]); 
      break;
    default:
      break;
    }
}

int main(int argc, char * argv[])
{
  int numLine = 0;
  int lineCnt;
  int numWord;
  int wordCnt;
  /*
  printf("numFirstNames = %d\n", numFirstNames);
  printf("numLastNames = %d\n", numLastNames);
  printf("numStreetNames = %d\n", numStreetNames);
  */
  if (argc < 3) 
    {
      printf("number of lines and number of word per line\n");
      return -1;
    }
  numLine = strtol(argv[1], NULL, 10); 
  numWord = strtol(argv[2], NULL, 10); 
  if ((numLine <= 0) || (numWord <= 0))
    {
      printf("must be positive numbers\n");
      return -1;
    }
  if (numWord > 10)
    {
      printf("too many words, do not exceed 10\n");
      return -1;
    }
  srand (time(NULL)); /* randomize the seed to ensure the list is
			 different in every execution */
  for (lineCnt = 0; lineCnt < numLine; lineCnt ++)
    {
      /* always add one word */
      printAWord();
      for (wordCnt = 1; wordCnt < numWord; wordCnt ++)
	{
	  printf(" ");
	  printAWord();
	}
      printf("\n");
    }
  return 0;
}