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. */ 30 static int 31 lpager_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 */ 42 static int 43 lpager_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. */ 58 static int 59 lpager_file(lua_State *L) 60 { 61 62 return (pager_file(luaL_checkstring(L, 1))); 63 } 64 65 static int 66 lpager_close(lua_State *L) 67 { 68 69 pager_close(); 70 return (0); 71 } 72 73 static 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 81 int 82 luaopen_pager(lua_State *L) 83 { 84 luaL_newlib(L, pagerlib); 85 return 1; 86 } 87