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