/* Read a line from a descriptor. Read the line one byte at a time, looking for
the newline. We store the newline in the buffer, then follow it with a null 
(the same as fgets(3). We return the number of characters up to, but not
including, the null (the same as strlen(3)).
*/

int read_line(register int fd, register char *ptr, int maxLen)
{

	int n, rc;
	char c;

	for (n = 1; n < maxLen; n++) {
		if (( rc = read(fd, &c, 1)) == 1) {
			*ptr++ = c;
			if (c == '\n')
				break;
		} else if (rc == 0) {
			if (n == 1)
				return (0); /* EOF, no data read */
			else
				break;	/* EOF, some data was read */

		} else
			return (-1); /* error */
	}
	
	*ptr = 0;
	return(n);
}