mirror of https://github.com/kepler155c/opus
84 lines
1.9 KiB
Lua
84 lines
1.9 KiB
Lua
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local sandboxEnv = setmetatable({ }, { __index = _G })
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for k,v in pairs(_ENV) do
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sandboxEnv[k] = v
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end
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_G.requireInjector()
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local Util = require('util')
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_G.kernel = {
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hooks = { }
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}
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local kernel = _G.kernel
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local fs = _G.fs
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local shell = _ENV.shell
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-- user environment
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if not fs.exists('usr/apps') then
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fs.makeDir('usr/apps')
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end
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if not fs.exists('usr/autorun') then
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fs.makeDir('usr/autorun')
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end
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if not fs.exists('usr/etc/fstab') then
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Util.writeFile('usr/etc/fstab', 'usr gitfs kepler155c/opus-apps/develop')
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end
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if not fs.exists('usr/config/shell') then
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Util.writeTable('usr/config/shell', {
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aliases = shell.aliases(),
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path = 'usr/apps:sys/apps:' .. shell.path(),
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lua_path = '/sys/apis:/usr/apis',
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})
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end
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-- shell environment
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local config = Util.readTable('usr/config/shell')
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if config.aliases then
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for k in pairs(shell.aliases()) do
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shell.clearAlias(k)
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end
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for k,v in pairs(config.aliases) do
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shell.setAlias(k, v)
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end
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end
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shell.setPath(config.path)
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_G.LUA_PATH = config.lua_path
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-- any function that runs in a kernel hook does not run in
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-- a separate coroutine or have a window. an error in a hook
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-- function will crash the system.
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function kernel.hook(event, fn)
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if type(event) == 'table' then
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for _,v in pairs(event) do
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kernel.hook(v, fn)
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end
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else
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if not kernel.hooks[event] then
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kernel.hooks[event] = { }
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end
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table.insert(kernel.hooks[event], fn)
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end
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end
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-- you can only unhook from within the function that hooked
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function kernel.unhook(event, fn)
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local eventHooks = kernel.hooks[event]
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if eventHooks then
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Util.removeByValue(eventHooks, fn)
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if #eventHooks == 0 then
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kernel.hooks[event] = nil
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end
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end
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end
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-- extensions
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local dir = 'sys/extensions'
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for _,file in ipairs(fs.list(dir)) do
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local s, m = Util.run(sandboxEnv, 'sys/apps/shell', fs.combine(dir, file))
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if not s then
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error(m)
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end
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end
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