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+/* $NetBSD: hist.h,v 1.22 2016/05/09 21:46:56 christos Exp $ */
+
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Christos Zoulas of Cornell University.
+ *
+ * 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. 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.
+ *
+ * @(#)hist.h 8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * el.hist.c: History functions
+ */
+#ifndef _h_el_hist
+#define _h_el_hist
+
+typedef int (*hist_fun_t)(void *, HistEventW *, int, ...);
+
+typedef struct el_history_t {
+ wchar_t *buf; /* The history buffer */
+ size_t sz; /* Size of history buffer */
+ wchar_t *last; /* The last character */
+ int eventno; /* Event we are looking for */
+ void *ref; /* Argument for history fcns */
+ hist_fun_t fun; /* Event access */
+ HistEventW ev; /* Event cookie */
+} el_history_t;
+
+#define HIST_FUN_INTERNAL(el, fn, arg) \
+ ((((*(el)->el_history.fun) ((el)->el_history.ref, &(el)->el_history.ev, \
+ fn, arg)) == -1) ? NULL : (el)->el_history.ev.str)
+#define HIST_FUN(el, fn, arg) \
+ (((el)->el_flags & NARROW_HISTORY) ? hist_convert(el, fn, arg) : \
+ HIST_FUN_INTERNAL(el, fn, arg))
+
+#define HIST_NEXT(el) HIST_FUN(el, H_NEXT, NULL)
+#define HIST_FIRST(el) HIST_FUN(el, H_FIRST, NULL)
+#define HIST_LAST(el) HIST_FUN(el, H_LAST, NULL)
+#define HIST_PREV(el) HIST_FUN(el, H_PREV, NULL)
+#define HIST_SET(el, num) HIST_FUN(el, H_SET, num)
+#define HIST_LOAD(el, fname) HIST_FUN(el, H_LOAD fname)
+#define HIST_SAVE(el, fname) HIST_FUN(el, H_SAVE fname)
+#define HIST_SAVE_FP(el, fp) HIST_FUN(el, H_SAVE_FP fp)
+
+libedit_private int hist_init(EditLine *);
+libedit_private void hist_end(EditLine *);
+libedit_private el_action_t hist_get(EditLine *);
+libedit_private int hist_set(EditLine *, hist_fun_t, void *);
+libedit_private int hist_command(EditLine *, int, const wchar_t **);
+libedit_private int hist_enlargebuf(EditLine *, size_t, size_t);
+libedit_private wchar_t *hist_convert(EditLine *, int, void *);
+
+#endif /* _h_el_hist */