add directory gnu

2024-02-19 00:24:47 -05:00
parent 32616db5a4
commit a40f4cadb0
5086 changed files with 1860970 additions and 0 deletions
--- a/gnu/glibc/glibc-1.03/stdio/glue.c
+++ b/gnu/glibc/glibc-1.03/stdio/glue.c
@@ -0,0 +1,97 @@
+/* Copyright (C) 1991 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, 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 <ansidecl.h>
+#include <stdio.h>
+#include <errno.h>
+
+typedef union
+  {
+    struct
+      {
+	int magic;
+	FILE **streamp;
+      } glue;
+    struct _iobuf
+      {
+	int _cnt;
+	unsigned char *_ptr;
+	unsigned char *_base;
+	int _bufsiz;
+	short int _flag;
+	char _file;
+      } unix_iobuf;
+  } unix_FILE;
+
+/* These are the Unix stdio's stdin, stdout, and stderr.  */
+unix_FILE _iob[] =
+  {
+    { { _GLUEMAGIC, &stdin, } },
+    { { _GLUEMAGIC, &stdout, } },
+    { { _GLUEMAGIC, &stderr, } },
+  };
+
+/* Called by the Unix stdio `getc' macro.  */
+int
+DEFUN(_filbuf, (file), unix_FILE *file)
+{
+  /* Compensate for getc's decrement.  */
+  switch (++file->glue.magic)
+    {
+    case _GLUEMAGIC:
+      return getc (*file->glue.streamp);
+
+    case  _IOMAGIC:
+      return getc ((FILE *) file);
+
+    default:
+      errno = EINVAL;
+      return EOF;
+    }
+}
+
+/* Called by the Unix stdio `putc' macro.  */
+int
+DEFUN(_flsbuf, (c, file),
+      int c AND 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:
+      errno = EINVAL;
+      return EOF;
+    }
+}