1 /*-
2 * Copyright (c) 2020 Kyle Evans <[email protected]>
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. */
33 static int
lpager_open(lua_State * L)34 lpager_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 */
45 static int
lpager_output(lua_State * L)46 lpager_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. */
61 static int
lpager_file(lua_State * L)62 lpager_file(lua_State *L)
63 {
64
65 return (pager_file(luaL_checkstring(L, 1)));
66 }
67
68 static int
lpager_close(lua_State * L)69 lpager_close(lua_State *L)
70 {
71
72 pager_close();
73 return (0);
74 }
75
76 static 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
84 int
luaopen_pager(lua_State * L)85 luaopen_pager(lua_State *L)
86 {
87 luaL_newlib(L, pagerlib);
88 return 1;
89 }
90