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nethackify.c

/*
nethackify
tries to write text ala nethack

cat /etc/motd/ | nethackify
/exec -o nethackify "good morning :)"

gurkan@linuks.mine.nu
*/

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/time.h>

char *normal  ="ABCDEFGHIKLMNOPQRTUVWZbdeghjklmnoqwy:;01678";
char *nethack1="^P(|||C||||||CFCP|J/V/|cccni||nrccvv.,C|o/3";
char *nethack2="?b?)F-(-?<_??(?(F???/??|??????r???????(???o";
char *nethack3=" [ [L       \\                              ";
char *nethack4="    [              \\                       ";
char *nethack5="    _               \\                      ";

int myrandom(float max)
{
   return ((int)(max*rand()/(RAND_MAX+1.0)));
}

void nethackify(char* str)
{
    int i,c;
    for(i=0; i<strlen(str); i++) {
      for(c=0; c<strlen(normal); c++) {
          if(normal[c]==str[i]) {
            if (myrandom(3)>0) {
            switch(myrandom(5)) {
                case 4: if(nethack5[c]!=' ') str[i]=nethack5[c];
                case 3: if(nethack4[c]!=' ') str[i]=nethack4[c];
                case 2: if(nethack3[c]!=' ') str[i]=nethack3[c]; break;
                case 1: if(nethack2[c]!=' ') str[i]=nethack2[c]; break;
                case 0: str[i]=nethack1[c]; break;
                default: break;
            }
            }
          }
      }
      printf("%c",str[i]);
    }
    
    printf(" ");
}

int main(int argc, char **argv)
{
    int i,c;
    struct timeval tv;
    FILE *f;
    char ch[1];

    srand((gettimeofday(&tv,NULL),tv.tv_usec));
    if (argc==1) {
      f=stdin;
      while(fread(ch,1,1,f)) {
          for(c=0; c<strlen(normal); c++) {
              if(normal[c]==ch[0]) {
                switch(myrandom(5)) {
                  case 4: if(nethack5[c]!=' ') ch[0]=nethack5[c];
                    case 3: if(nethack4[c]!=' ') ch[0]=nethack4[c];
                  case 2: if(nethack3[c]!=' ') ch[0]=nethack3[c]; break;
                  case 1: if(nethack2[c]!=' ') ch[0]=nethack2[c]; break;
                  case 0: ch[0]=nethack1[c]; break;
                  default: break;
                }
            }
          }
          printf("%c",ch[0]);
      }
      fclose(f);
    } else {
      for(i=1; i<argc; i++) {
          nethackify(argv[i]);
      }
      printf("\n");
    }
    
    return 0;
}

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