helper.c

   1 /*A list of helper functions*/
   2
   3 #include "code.h"
   4 #include <time.h>
   5
   6 /*Prints text and pattern*/
   7 void print_pattern()
   8 {
   9         int i,j;
  10
  11         /*Prints the pattern*/
  12         for(j = 0; j < m; j++) {
  13
  14                 for(i = 0; i < m; i++)
  15                         printf("%i",pattern[j][i]);
  16
  17                 printf("\n");
  18         }
  19
  20         /*Prints the text*/
  21         for(j = 0; j < n; j++) {
  22                 printf("\n");
  23
  24                 for(i = 0; i < n; i++)
  25                         printf("%c",text[j][i]);
  26         }
  27 }
  28
  29 /*Returns the square of a number*/
  30 int power(int number, int power)
  31 {
  32         int i;
  33
  34         int returned_number = number;
  35
  36         for(i=1;i<power;i++)
  37                 returned_number = returned_number * number;
  38
  39                 return returned_number;
  40 }
  41
  42 /*Loads text and pattern into tables*/
  43 void load_files()
  44 {
  45         FILE *text_fp, *pattern_fp;
  46
  47         int i,j;
  48
  49         int c;
  50
  51         /*Pattern loading*/
  52         pattern_fp = fopen("data/pattern", "r");
  53
  54         for(j = 0; j < m; j++)
  55                 for(i = 0; i < m; i++) {
  56                         c = fgetc (pattern_fp);
  57                         /* If we encounter '\n' pull the next character*/
  58                         if(c != 10)
  59                                 pattern[j][i] = c;
  60                         else
  61                                 pattern[j][i] = fgetc (pattern_fp);
  62                 }
  63
  64         fclose(pattern_fp);
  65
  66         /*Text loading*/
  67         text_fp = fopen("data/text", "r");
  68
  69         for(j = 0; j < n; j++)
  70                 for(i = 0; i < n; i++) {
  71                         c = fgetc (text_fp);
  72                         /* If we encounter '\n' pull the next character*/
  73                         if(c != 10)
  74                                 text[j][i] = c;
  75                         else
  76                                 text[j][i] = fgetc (text_fp);
  77                 }
  78
  79         fclose(text_fp);
  80 }
  81
  82 /*Loads text and pattern into tables*/
  83 void create_files(int pattern_size, int text_size, int alphabet)
  84 {
  85         FILE *text_fp, *pattern_fp;
  86
  87         int i,j;
  88
  89         /* initialize random seed: */
  90         srand( time(NULL) );
  91
  92         /*Creating pattern*/
  93         pattern_fp = fopen("data/pattern", "w");
  94
  95         for(j = 0; j < pattern_size; j++){
  96                 for(i = 0; i < pattern_size; i++)
  97                         fputc (rand() % alphabet + 1, pattern_fp);
  98                 fputc (10, pattern_fp);
  99         }
 100
 101         fclose(pattern_fp);
 102
 103         /*Creating text*/
 104         text_fp = fopen("data/text", "w");
 105
 106         for(j = 0; j < text_size; j++){
 107                 for(i = 0; i < text_size; i++)
 108                         fputc (rand() % alphabet + 1, pattern_fp);
 109                 fputc (10, pattern_fp);
 110         }
 111
 112         fclose(text_fp);
 113 }
 114