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-rw-r--r--stdio/glue.c112
1 files changed, 0 insertions, 112 deletions
diff --git a/stdio/glue.c b/stdio/glue.c
deleted file mode 100644
index a320f46..0000000
--- a/stdio/glue.c
+++ /dev/null
@@ -1,112 +0,0 @@
-/* Copyright (C) 1991, 1992, 1996, 1997 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. */
-
-/* This file provides glue between Unix stdio and GNU stdio.
- It supports use of Unix stdio `getc' and `putc' (and, by extension,
- `getchar' and `putchar') macros on GNU stdio streams (they are slow, but
- they work). It also supports all stdio operations (including Unix
- `getc' and `putc') on Unix's stdin, stdout, and stderr (the elements of
- `_iob').
-
- The reasoning behind this is to allow programs (and especially
- libraries) compiled with Unix header files to work with the GNU C
- library. */
-
-#include <stdio.h>
-#include <errno.h>
-
-typedef union
- {
- struct
- {
- int magic;
- FILE **streamp; /* Overlaps GNU stdio `bufp' member. */
- /* These two overlap the GNU stdio `get_limit' and `put_limit'
- members. They must be <= `streamp'/`bufp' for GNU getc and putc
- to do the right thing. */
- FILE **streamp2, **streamp3;
- } glue;
- struct _iobuf
- {
- int _cnt;
- unsigned char *_ptr;
- unsigned char *_base;
- int _bufsiz;
- short int _flag;
- char _file;
- } unix_iobuf;
- FILE gnu_stream;
- } unix_FILE;
-
-/* These are the Unix stdio's stdin, stdout, and stderr.
- In Unix stdin is (&_iob[0]), stdout is (&_iob[1]), and stderr is
- (&_iob[2]). The magic number marks these as glued streams. The
- __validfp macro in stdio.h is used by every stdio function. It checks
- for glued streams, and replaces them with the GNU stdio stream. */
-unix_FILE _iob[] =
- {
-#define S(name) { { _GLUEMAGIC, &name, &name, &name } }
- S (stdin),
- S (stdout),
- S (stderr),
-#undef S
- };
-
-/* Called by the Unix stdio `getc' macro.
- The macro is assumed to look something like:
- (--file->_cnt < 0 ? _filbuf (file) ...)
- In a Unix stdio FILE `_cnt' is the first element.
- In a GNU stdio or glued FILE, the first element is the magic number. */
-int
-_filbuf (unix_FILE *file)
-{
- switch (++file->glue.magic) /* Compensate for Unix getc's decrement. */
- {
- case _GLUEMAGIC:
- /* This is a glued stream. */
- return getc (*file->glue.streamp);
-
- case _IOMAGIC:
- /* This is a normal GNU stdio stream. */
- return getc ((FILE *) file);
-
- default:
- /* Bogus stream. */
- __set_errno (EINVAL);
- return EOF;
- }
-}
-
-/* Called by the Unix stdio `putc' macro. Much like getc, above. */
-int
-_flsbuf (int c, unix_FILE *file)
-{
- /* Compensate for putc's decrement. */
- switch (++file->glue.magic)
- {
- case _GLUEMAGIC:
- return putc (c, *file->glue.streamp);
-
- case _IOMAGIC:
- return putc (c, (FILE *) file);
-
- default:
- __set_errno (EINVAL);
- return EOF;
- }
-}