lib/stdio/fgets.c

   1 /*
   2  * fgets.c - get a string from a file
   3  */
   4 /* $Header$ */
   5
   6 #include        <stdio.h>
   7
   8 char *
   9 fgets(char *s, register int n, register FILE *stream)
  10 {
  11         register int ch;
  12         register char *ptr;
  13
  14         ptr = s;
  15         while (--n > 0 && (ch = getc(stream)) != EOF) {
  16                 *ptr++ = ch;
  17                 if ( ch == '\n')
  18                         break;
  19         }
  20         if (ch == EOF) {
  21                 if (feof(stream)) {
  22                         if (ptr == s) return NULL;
  23                 } else return NULL;
  24         }
  25         *ptr = '\0';
  26         return s;
  27 }