+++ /dev/null
-/* Copyright 1998 by the Massachusetts Institute of Technology.
- *
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies and that both that copyright
- * notice and this permission notice appear in supporting
- * documentation, and that the name of M.I.T. not be used in
- * advertising or publicity pertaining to distribution of the
- * software without specific, written prior permission.
- * M.I.T. makes no representations about the suitability of
- * this software for any purpose. It is provided "as is"
- * without express or implied warranty.
- */
-
-static const char rcsid[] = "$Id: ares__read_line.c,v 1.2 1998/11/02 19:13:43 ghudson Exp $";
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "ares.h"
-#include "ares_private.h"
-
-/* This is an internal function. Its contract is to read a line from
- * a file into a dynamically allocated buffer, zeroing the trailing
- * newline if there is one. The calling routine may call
- * ares__read_line multiple times with the same buf and bufsize
- * pointers; *buf will be reallocated and *bufsize adjusted as
- * appropriate. The initial value of *buf should be NULL. After the
- * calling routine is done reading lines, it should free *buf.
- */
-int ares__read_line(FILE *fp, char **buf, int *bufsize)
-{
- char *newbuf;
- int offset = 0, len;
-
- if (*buf == NULL)
- {
- *buf = malloc(128);
- if (!*buf)
- return ARES_ENOMEM;
- *bufsize = 128;
- }
-
- while (1)
- {
- if (!fgets(*buf + offset, *bufsize - offset, fp))
- return (offset != 0) ? 0 : (ferror(fp)) ? ARES_EFILE : ARES_EOF;
- len = offset + strlen(*buf + offset);
- if ((*buf)[len - 1] == '\n')
- {
- (*buf)[len - 1] = 0;
- return ARES_SUCCESS;
- }
- offset = len;
-
- /* Allocate more space. */
- newbuf = realloc(*buf, *bufsize * 2);
- if (!newbuf)
- return ARES_ENOMEM;
- *buf = newbuf;
- *bufsize *= 2;
- }
-}