1
0
mirror of https://github.com/kepler155c/opus synced 2024-12-27 09:00:41 +00:00
opus/sys/apps/Lua.lua
2017-05-20 18:27:26 -04:00

315 lines
7.2 KiB
Lua

local injector = requireInjector or load(http.get('http://pastebin.com/raw/c0TWsScv').readAll())()
require = injector(getfenv(1))
local Util = require('util')
local UI = require('ui')
local Event = require('event')
local History = require('history')
local sandboxEnv = Util.shallowCopy(getfenv(1))
sandboxEnv.exit = function() Event.exitPullEvents() end
sandboxEnv.require = injector(sandboxEnv)
setmetatable(sandboxEnv, { __index = _G })
multishell.setTitle(multishell.getCurrent(), 'Lua')
UI:configure('Lua', ...)
local command = ''
local history = History.load('usr/.lua_history', 25)
local page = UI.Page({
menuBar = UI.MenuBar({
buttons = {
{ text = 'Local', event = 'local' },
{ text = 'Global', event = 'global' },
{ text = 'Device', event = 'device', name = 'Device' },
},
}),
prompt = UI.TextEntry({
y = 2,
shadowText = 'enter command',
backgroundFocusColor = colors.black,
limit = 256,
accelerators = {
enter = 'command_enter',
up = 'history_back',
down = 'history_forward',
mouse_rightclick = 'clear_prompt',
-- [ 'control-space' ] = 'autocomplete',
},
}),
grid = UI.ScrollingGrid({
y = 3,
columns = {
{ heading = 'Key', key = 'name' },
{ heading = 'Value', key = 'value' },
},
sortColumn = 'name',
autospace = true,
}),
notification = UI.Notification(),
})
function page:setPrompt(value, focus)
self.prompt:setValue(value)
self.prompt.scroll = 0
self.prompt:setPosition(#value)
self.prompt:updateScroll()
if value:sub(-1) == ')' then
self.prompt:setPosition(#value - 1)
end
self.prompt:draw()
if focus then
page:setFocus(self.prompt)
end
end
function page:enable()
self:setFocus(self.prompt)
UI.Page.enable(self)
end
local function autocomplete(env, oLine, x)
local sLine = oLine:sub(1, x)
local nStartPos = sLine:find("[a-zA-Z0-9_%.]+$")
if nStartPos then
sLine = sLine:sub(nStartPos)
end
if #sLine > 0 then
local results = textutils.complete(sLine, env)
if #results == 0 then
-- setError('No completions available')
elseif #results == 1 then
return Util.insertString(oLine, results[1], x + 1)
elseif #results > 1 then
local prefix = results[1]
for n = 1, #results do
local result = results[n]
while #prefix > 0 do
if result:find(prefix, 1, true) == 1 then
break
end
prefix = prefix:sub(1, #prefix - 1)
end
end
if #prefix > 0 then
return Util.insertString(oLine, prefix, x + 1)
else
-- setStatus('Too many results')
end
end
end
return oLine
end
function page:eventHandler(event)
if event.type == 'global' then
self:setPrompt('', true)
self:executeStatement('getfenv(0)')
command = nil
elseif event.type == 'local' then
self:setPrompt('', true)
self:executeStatement('getfenv(1)')
command = nil
elseif event.type == 'autocomplete' then
local sz = #self.prompt.value
local pos = self.prompt.pos
self:setPrompt(autocomplete(sandboxEnv, self.prompt.value, self.prompt.pos))
self.prompt:setPosition(pos + #self.prompt.value - sz)
self.prompt:updateCursor()
elseif event.type == 'device' then
if not _G.device then
sandboxEnv.device = { }
for _,side in pairs(peripheral.getNames()) do
local key = string.format('%s:%s', peripheral.getType(side), side)
sandboxEnv.device[ key ] = peripheral.wrap(side)
end
end
self:setPrompt('device', true)
self:executeStatement('device')
elseif event.type == 'history_back' then
local value = history.back()
if value then
self:setPrompt(value)
end
elseif event.type == 'history_forward' then
self:setPrompt(history.forward() or '')
elseif event.type == 'clear_prompt' then
self:setPrompt('')
history.setPosition(#history.entries + 1)
elseif event.type == 'command_enter' then
local s = tostring(self.prompt.value)
if #s > 0 then
history.add(s)
self:executeStatement(s)
else
local t = { }
for k = #history.entries, 1, -1 do
table.insert(t, {
name = #t + 1,
value = history.entries[k],
isHistory = true,
pos = k,
})
end
history.setPosition(#history.entries + 1)
command = nil
self.grid:setValues(t)
self.grid:setIndex(1)
self.grid:adjustWidth()
self:draw()
end
return true
else
return UI.Page.eventHandler(self, event)
end
return true
end
function page:setResult(result)
local t = { }
local function safeValue(v)
local t = type(v)
if t == 'string' or t == 'number' then
return v
end
return tostring(v)
end
if type(result) == 'table' then
for k,v in pairs(result) do
local entry = {
name = safeValue(k),
rawName = k,
value = safeValue(v),
rawValue = v,
}
if type(v) == 'table' then
if Util.size(v) == 0 then
entry.value = 'table: (empty)'
else
entry.value = 'table'
end
end
table.insert(t, entry)
end
else
table.insert(t, {
name = type(result),
value = tostring(result),
rawValue = result,
})
end
self.grid:setValues(t)
self.grid:setIndex(1)
self.grid:adjustWidth()
self:draw()
end
function page.grid:eventHandler(event)
local entry = self:getSelected()
local function commandAppend()
if entry.isHistory then
history.setPosition(entry.pos)
return entry.value
end
if type(entry.rawValue) == 'function' then
if command then
return command .. '.' .. entry.name .. '()'
end
return entry.name .. '()'
end
if command then
if type(entry.rawName) == 'number' then
return command .. '[' .. entry.name .. ']'
end
if entry.name:match("%W") or
entry.name:sub(1, 1):match("%d") then
return command .. "['" .. tostring(entry.name) .. "']"
end
return command .. '.' .. entry.name
end
return entry.name
end
if event.type == 'grid_focus_row' then
if self.focused then
page:setPrompt(commandAppend())
end
elseif event.type == 'grid_select' then
page:setPrompt(commandAppend(), true)
page:executeStatement(commandAppend())
elseif event.type == 'copy' then
if entry then
clipboard.setData(entry.rawValue)
end
else
return UI.Grid.eventHandler(self, event)
end
return true
end
function page:rawExecute(s)
local fn, m = loadstring("return (" .. s .. ')', 'lua')
if not fn then
fn, m = loadstring(s, 'lua')
end
if fn then
setfenv(fn, sandboxEnv)
fn, m = pcall(fn)
end
return fn, m
end
function page:executeStatement(statement)
command = statement
local s, m = self:rawExecute(command)
if s and m then
self:setResult(m)
elseif s and type(m) == 'boolean' then
self:setResult(m)
else
self.grid:setValues({ })
self.grid:draw()
if m then
self.notification:error(m, 5)
end
end
end
local args = { ... }
if args[1] then
command = 'args[1]'
sandboxEnv.args = args
page:setResult(args[1])
end
UI:setPage(page)
Event.pullEvents()
UI.term:reset()