#include <stdio.h>
#include <ctype.h>
#include "getinput.h"
#include "hash.h"

#define MAXWORD 20 /* maximum word length */

int getdef(char *word, int lim) {
     int c;
     char *w = word;

     while (isspace(c=getch()))
	  putchar(c);

     if (c != EOF)
	  *w++ = c;
     if (!isalnum(c)) {
	  *w = '\0';
	  if (c == '/') { /* comments */
	       if ((c = getch()) == '*') {
		    while ((c = getch()) != EOF) {
			 if (c == '*')
			      if ((c = getch()) == '/') {
				   strcpy(word, "");
				   return c;
			      }
		    }
	       } else {
		    ungetch(c);
		    c = '/';
	       }
	  } 
	  return c;
     }
     for ( ; --lim > 0; w++)
	  if (!isalnum(*w = getch()) && *w != '_') {
	       ungetch(*w);
	       break;
	  }
     *w = '\0';
     return word[0];
} /* getdef() */

int main(void) {
     char word[MAXWORD];
     char name[MAXWORD];
     char defn[MAXWORD];
     struct nlist *ent;
     int cond;

     while ((cond=getdef(word, MAXWORD)) != EOF) {
	  if (cond == '#') {
	       getdef(word, MAXWORD);
	       if (strcmp(word, "define") == 0) {
		    cond=getdef(word, MAXWORD);
		    if (!isspace(cond)) {
			 strcpy(name, word);
			 cond=getdef(word, MAXWORD);
			 if (!isspace(cond)) {
			      strcpy(defn, word);
			      install(name, defn);
			 }
		    }
	       }
	  } else if ((ent=lookup(word)) != NULL) {
	       printf("%s", ent->defn);
	  } else
	       printf("%s", word);
     }

     return 0;
}