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. */ 33 static int 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 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 62 lpager_file(lua_State *L) 63 { 64 65 return (pager_file(luaL_checkstring(L, 1))); 66 } 67 68 static int 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 85 luaopen_pager(lua_State *L) 86 { 87 luaL_newlib(L, pagerlib); 88 return 1; 89 } 90