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+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * from: @(#)local.h 5.3 (Berkeley) 5/6/93
+ * $Id$
+ */
+
+/*
+ * Information local to this implementation of stdio,
+ * in particular, macros and private variables.
+ */
+
+#include <sys/types.h>
+#include <stddef.h>
+
+extern FILE *__sfp __P_((void));
+extern int __sflush __P_((FILE *));
+extern int __srefill __P_((FILE *));
+extern int __swrite __P_((FILE *, const char *, int));
+extern int __sread __P_((FILE *, char *, int));
+extern fpos_t __sseek __P_((FILE *, off_t, int));
+extern int __sclose __P_((FILE *));
+extern void __sinit __P_((void));
+extern void _cleanup __P_((void));
+extern void __smakebuf __P_((FILE *));
+extern int __swhatbuf __P_((FILE *, size_t *, int *));
+extern int __swalk_sflush __P_(());
+extern int __swsetup __P_((FILE *));
+extern int __sflags __P_((const char *, int *));
+
+extern void (*__cleanup) __P_((void));
+
+/*
+ * Return true iff the given FILE cannot be written now.
+ */
+#define cantwrite(fp) \
+ ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
+ __swsetup(fp))
+
+/*
+ * Test whether the given stdio file has an active ungetc buffer;
+ * release such a buffer, without restoring ordinary unread data.
+ */
+#define HASUB(fp) ((fp)->_ub._base != NULL)
+#define FREEUB(fp) { \
+ if ((fp)->_ub._base != (fp)->_ubuf) \
+ free((char *)(fp)->_ub._base); \
+ (fp)->_ub._base = NULL; \
+}
+
+/*
+ * test for an fgetline() buffer.
+ */
+#define HASLB(fp) ((fp)->_lb._base != NULL)
+#define FREELB(fp) { \
+ free((char *)(fp)->_lb._base); \
+ (fp)->_lb._base = NULL; \
+}