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-rw-r--r--stdio/memstream.c176
1 files changed, 0 insertions, 176 deletions
diff --git a/stdio/memstream.c b/stdio/memstream.c
deleted file mode 100644
index b400bb7d27..0000000000
--- a/stdio/memstream.c
+++ /dev/null
@@ -1,176 +0,0 @@
-/* Copyright (C) 1991, 92, 94, 95, 96, 97 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-
-struct memstream_info
- {
- char **buffer;
- size_t *bufsize;
- };
-
-/* Enlarge STREAM's buffer. */
-static void
-enlarge_buffer (register FILE *stream, int c)
-{
- struct memstream_info *info = (struct memstream_info *) stream->__cookie;
- size_t need;
-
- if (stream->__put_limit != stream->__buffer)
- /* Record how much has actually been written into the buffer. */
- *info->bufsize = stream->__bufp - stream->__buffer;
-
- if (stream->__target != -1
- && (size_t) stream->__target > *info->bufsize)
- /* Our target (where the buffer maps to) is always zero except when
- the user just did a SEEK_END fseek. If he sought within the
- buffer, we need do nothing and will zero the target below. If he
- sought past the end of the object, grow and zero-fill the buffer
- up to the target address. */
- need = stream->__target;
- else
- need = *info->bufsize;
-
- /* We always need an extra character in the buffer. Either we are
- writing C, or we are flushing and need to write a NUL terminator. */
- ++need;
-
- if (stream->__bufsize < need)
- {
- /* Enlarge the buffer. */
- char *newbuf;
- size_t newsize;
- if (stream->__bufsize * 2 < need)
- newsize = need;
- else
- newsize = stream->__bufsize * 2;
- newbuf = (char *) realloc ((void *) stream->__buffer, newsize);
- if (newbuf == NULL)
- {
- stream->__error = 1;
- return;
- }
- *info->buffer = stream->__buffer = newbuf;
- stream->__bufsize = newsize;
- }
-
- stream->__target = stream->__offset = 0;
- stream->__get_limit = stream->__bufp = stream->__buffer + *info->bufsize;
- stream->__put_limit = stream->__buffer + stream->__bufsize;
-
- need -= stream->__bufp - stream->__buffer + 1;
- if (need > 0)
- {
- /* We are extending the buffer after an fseek; zero-fill new space. */
- memset (stream->__bufp, '\0', need);
- stream->__bufp += need;
- }
-
- if (c != EOF)
- *stream->__bufp++ = (unsigned char) c;
- else
- *stream->__bufp = '\0';
-}
-
-/* Seek function for memstreams.
- There is no external state to munge. */
-
-static int
-seek (void *cookie, fpos_t *pos, int whence)
-{
- switch (whence)
- {
- case SEEK_SET:
- case SEEK_CUR:
- return 0;
-
- case SEEK_END:
- /* Return the position relative to the end of the object.
- fseek has just flushed us, so the info is consistent. */
- *pos += *((struct memstream_info *) cookie)->bufsize;
- return 0;
-
- default:
- __libc_fatal ("memstream::seek called with bogus WHENCE\n");
- return -1;
- }
-}
-
-static int
-free_info (void *cookie)
-{
-#if 0
- struct memstream_info *info = (struct memstream_info *) cookie;
- char *buf;
-
- buf = (char *) realloc ((PTR) *info->buffer, *info->bufsize);
- if (buf != NULL)
- *info->buffer = buf;
-#endif
-
- free (cookie);
-
- return 0;
-}
-
-/* Open a stream that writes into a malloc'd buffer that is expanded as
- necessary. *BUFLOC and *SIZELOC are updated with the buffer's location
- and the number of characters written on fflush or fclose. */
-FILE *
-open_memstream (bufloc, sizeloc)
- char **bufloc;
- size_t *sizeloc;
-{
- FILE *stream;
- struct memstream_info *info;
-
- if (bufloc == NULL || sizeloc == NULL)
- {
- __set_errno (EINVAL);
- return NULL;
- }
-
- stream = fmemopen ((char *) NULL, BUFSIZ, "w+");
- if (stream == NULL)
- return NULL;
-
- info = (struct memstream_info *) malloc (sizeof (struct memstream_info));
- if (info == NULL)
- {
- int save = errno;
- (void) fclose (stream);
- __set_errno (save);
- return NULL;
- }
-
- stream->__room_funcs.__output = enlarge_buffer;
- stream->__io_funcs.__seek = seek;
- stream->__io_funcs.__close = free_info;
- stream->__cookie = (void *) info;
- stream->__userbuf = 1;
-
- info->buffer = bufloc;
- info->bufsize = sizeloc;
-
- *bufloc = stream->__buffer;
-
- return stream;
-}