1-- 2-- Copyright (c) 2018 Kyle Evans <[email protected]> 3-- All rights reserved. 4-- 5-- Redistribution and use in source and binary forms, with or without 6-- modification, are permitted provided that the following conditions 7-- are met: 8-- 1. Redistributions of source code must retain the above copyright 9-- notice, this list of conditions and the following disclaimer. 10-- 2. Redistributions in binary form must reproduce the above copyright 11-- notice, this list of conditions and the following disclaimer in the 12-- documentation and/or other materials provided with the distribution. 13-- 14-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24-- SUCH DAMAGE. 25-- 26-- $FreeBSD$ 27-- 28 29local core = require('core') 30 31local cli = {} 32 33-- Internal function 34-- Parses arguments to boot and returns two values: kernel_name, argstr 35-- Defaults to nil and "" respectively. 36-- This will also parse arguments to autoboot, but the with_kernel argument 37-- will need to be explicitly overwritten to false 38local parse_boot_args = function(argv, with_kernel) 39 if with_kernel == nil then 40 with_kernel = true 41 end 42 if #argv == 0 then 43 if with_kernel then 44 return nil, "" 45 else 46 return "" 47 end 48 end 49 local kernel_name 50 local argstr = "" 51 52 for k, v in ipairs(argv) do 53 if with_kernel and v:sub(1,1) ~= "-" then 54 kernel_name = v 55 else 56 argstr = argstr .. " " .. v 57 end 58 end 59 if with_kernel then 60 return kernel_name, argstr 61 else 62 return argstr 63 end 64end 65 66-- Globals 67 68function boot(...) 69 local argv = {...} 70 local cmd_name = "" 71 cmd_name, argv = core.popFrontTable(argv) 72 local kernel, argstr = parse_boot_args(argv) 73 if kernel ~= nil then 74 loader.perform("unload") 75 config.selectkernel(kernel) 76 end 77 core.boot(argstr) 78end 79 80function autoboot(...) 81 local argv = {...} 82 local cmd_name = "" 83 cmd_name, argv = core.popFrontTable(argv) 84 local argstr = parse_boot_args(argv, false) 85 core.autoboot(argstr) 86end 87 88-- Declares a global function cli_execute that attempts to dispatch the 89-- arguments passed as a lua function. This gives lua a chance to intercept 90-- builtin CLI commands like "boot" 91function cli_execute(...) 92 local argv = {...} 93 -- Just in case... 94 if #argv == 0 then 95 loader.command(...) 96 return 97 end 98 99 local cmd_name = argv[1] 100 local cmd = _G[cmd_name] 101 if cmd ~= nil and type(cmd) == "function" then 102 -- Pass argv wholesale into cmd. We could omit argv[0] since the 103 -- traditional reasons for including it don't necessarily apply, 104 -- it may not be totally redundant if we want to have one global 105 -- handling multiple commands 106 cmd(...) 107 else 108 loader.command(...) 109 end 110 111end 112 113return cli 114