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 <sys/cdefs.h>
27__FBSDID("$FreeBSD$");
28
29#include <lua.h>
30#include "lauxlib.h"
31
32/* Open the pager.  No arguments, no return value. */
33static int
34lpager_open(lua_State *L)
35{
36
37	pager_open();
38	return (0);
39}
40
41/*
42 * Output to the pager.  All arguments are interpreted as strings and passed to
43 * pager_output().  No return value.
44 */
45static int
46lpager_output(lua_State *L)
47{
48	const char *outstr;
49	int i;
50
51	for (i = 1; i <= lua_gettop(L); i++) {
52		outstr = luaL_tolstring(L,  i, NULL);
53		pager_output(outstr);
54		lua_pop(L, -1);
55	}
56
57	return (0);
58}
59
60/* Output to the pager from a file.  Takes a filename, no return value. */
61static int
62lpager_file(lua_State *L)
63{
64
65	return (pager_file(luaL_checkstring(L, 1)));
66}
67
68static int
69lpager_close(lua_State *L)
70{
71
72	pager_close();
73	return (0);
74}
75
76static const struct luaL_Reg pagerlib[] = {
77	{ "open", lpager_open },
78	{ "output", lpager_output },
79	{ "file", lpager_file },
80	{ "close", lpager_close },
81	{ NULL, NULL },
82};
83
84int
85luaopen_pager(lua_State *L)
86{
87	luaL_newlib(L, pagerlib);
88	return 1;
89}
90