mirror of https://github.com/Hilbis/Hilbish
104 lines
2.2 KiB
Lua
104 lines
2.2 KiB
Lua
-- The preload file initializes everything else for our shell
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local fs = require 'fs'
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local commander = require 'commander'
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local bait = require 'bait'
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local old_dir = hilbish.cwd()
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local shlvl = tonumber(os.getenv 'SHLVL')
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if shlvl ~= nil then os.setenv('SHLVL', shlvl + 1) else os.setenv('SHLVL', 1) end
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-- Builtins
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commander.register('cd', function (args)
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bait.throw('cd', args)
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if #args > 0 then
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local path = ''
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for i = 1, #args do
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path = path .. tostring(args[i]) .. ' '
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end
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path = path:gsub('$%$','\0'):gsub('${([%w_]+)}', os.getenv)
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:gsub('$([%w_]+)', os.getenv):gsub('%z','$'):gsub("%s+", "")
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if path == '-' then
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path = old_dir
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print(path)
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end
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old_dir = hilbish.cwd()
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local ok, err = pcall(function() fs.cd(path) end)
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if not ok then
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if err == 1 then
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print('directory does not exist')
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end
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return err
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end
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return
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end
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fs.cd(os.getenv 'HOME')
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bait.throw('command.exit', 0)
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end)
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commander.register('exit', function()
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os.exit(0)
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end)
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do
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local virt_G = { }
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setmetatable(_G, {
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__index = function (self, key)
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local got_virt = virt_G[key]
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if got_virt ~= nil then
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return got_virt
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end
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virt_G[key] = os.getenv(key)
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return virt_G[key]
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end,
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__newindex = function (self, key, value)
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if type(value) == 'string' then
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os.setenv(key, value)
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virt_G[key] = value
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else
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if type(virt_G[key]) == 'string' then
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os.setenv(key, '')
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end
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virt_G[key] = value
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end
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end,
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})
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bait.catch('command.exit', function ()
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for key, value in pairs(virt_G) do
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if type(value) == 'string' then
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virt_G[key] = os.getenv(key)
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end
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end
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end)
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end
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-- Function additions to Lua standard library
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function string.split(str, delimiter)
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local result = {}
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local from = 1
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local delim_from, delim_to = string.find(str, delimiter, from)
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while delim_from do
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table.insert(result, string.sub(str, from, delim_from - 1))
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from = delim_to + 1
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delim_from, delim_to = string.find(str, delimiter, from)
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end
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table.insert(result, string.sub(str, from))
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return result
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end
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-- Hook handles
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bait.catch('command.not-found', function(cmd)
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print(string.format('hilbish: %s not found', cmd))
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end)
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