1/*-
2 * Copyright (c) 2020 Kyle Evans <kevans@FreeBSD.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#include <lua.h>
27#include "lauxlib.h"
28
29/* Open the pager.  No arguments, no return value. */
30static int
31lpager_open(lua_State *L)
32{
33
34	pager_open();
35	return (0);
36}
37
38/*
39 * Output to the pager.  All arguments are interpreted as strings and passed to
40 * pager_output().  No return value.
41 */
42static int
43lpager_output(lua_State *L)
44{
45	const char *outstr;
46	int i;
47
48	for (i = 1; i <= lua_gettop(L); i++) {
49		outstr = luaL_tolstring(L,  i, NULL);
50		pager_output(outstr);
51		lua_pop(L, -1);
52	}
53
54	return (0);
55}
56
57/* Output to the pager from a file.  Takes a filename, no return value. */
58static int
59lpager_file(lua_State *L)
60{
61
62	return (pager_file(luaL_checkstring(L, 1)));
63}
64
65static int
66lpager_close(lua_State *L)
67{
68
69	pager_close();
70	return (0);
71}
72
73static const struct luaL_Reg pagerlib[] = {
74	{ "open", lpager_open },
75	{ "output", lpager_output },
76	{ "file", lpager_file },
77	{ "close", lpager_close },
78	{ NULL, NULL },
79};
80
81int
82luaopen_pager(lua_State *L)
83{
84	luaL_newlib(L, pagerlib);
85	return 1;
86}
87