Module:Sandbox: Difference between revisions

From Tildeverse Wiki
(Magic)
m (more or less magic)
Line 25: Line 25:
end
end


M.json = (function()
M.tildeverse = mw.text.jsonDecode[==[
--
-- json.lua
--
-- Copyright (c) 2020 rxi
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy of
-- this software and associated documentation files (the "Software"), to deal in
-- the Software without restriction, including without limitation the rights to
-- use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-- of the Software, and to permit persons to whom the Software is furnished to do
-- so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in all
-- copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-- SOFTWARE.
--
 
local json = { _version = "0.1.2" }
 
-------------------------------------------------------------------------------
-- Encode
-------------------------------------------------------------------------------
 
local encode
 
local escape_char_map = {
  [ "\\" ] = "\\",
  [ "\"" ] = "\"",
  [ "\b" ] = "b",
  [ "\f" ] = "f",
  [ "\n" ] = "n",
  [ "\r" ] = "r",
  [ "\t" ] = "t",
}
 
local escape_char_map_inv = { [ "/" ] = "/" }
for k, v in pairs(escape_char_map) do
  escape_char_map_inv[v] = k
end
 
 
local function escape_char(c)
  return "\\" .. (escape_char_map[c] or string.format("u%04x", c:byte()))
end
 
 
local function encode_nil(val)
  return "null"
end
 
 
local function encode_table(val, stack)
  local res = {}
  stack = stack or {}
 
  -- Circular reference?
  if stack[val] then error("circular reference") end
 
  stack[val] = true
 
  if rawget(val, 1) ~= nil or next(val) == nil then
    -- Treat as array -- check keys are valid and it is not sparse
    local n = 0
    for k in pairs(val) do
      if type(k) ~= "number" then
        error("invalid table: mixed or invalid key types")
      end
      n = n + 1
    end
    if n ~= #val then
      error("invalid table: sparse array")
    end
    -- Encode
    for i, v in ipairs(val) do
      table.insert(res, encode(v, stack))
    end
    stack[val] = nil
    return "[" .. table.concat(res, ",") .. "]"
 
  else
    -- Treat as an object
    for k, v in pairs(val) do
      if type(k) ~= "string" then
        error("invalid table: mixed or invalid key types")
      end
      table.insert(res, encode(k, stack) .. ":" .. encode(v, stack))
    end
    stack[val] = nil
    return "{" .. table.concat(res, ",") .. "}"
  end
end
 
 
local function encode_string(val)
  return '"' .. val:gsub('[%z\1-\31\\"]', escape_char) .. '"'
end
 
 
local function encode_number(val)
  -- Check for NaN, -inf and inf
  if val ~= val or val <= -math.huge or val >= math.huge then
    error("unexpected number value '" .. tostring(val) .. "'")
  end
  return string.format("%.14g", val)
end
 
 
local type_func_map = {
  [ "nil"    ] = encode_nil,
  [ "table"  ] = encode_table,
  [ "string"  ] = encode_string,
  [ "number"  ] = encode_number,
  [ "boolean" ] = tostring,
}
 
 
encode = function(val, stack)
  local t = type(val)
  local f = type_func_map[t]
  if f then
    return f(val, stack)
  end
  error("unexpected type '" .. t .. "'")
end
 
 
function json.encode(val)
  return ( encode(val) )
end
 
 
-------------------------------------------------------------------------------
-- Decode
-------------------------------------------------------------------------------
 
local parse
 
local function create_set(...)
  local res = {}
  for i = 1, select("#", ...) do
    res[ select(i, ...) ] = true
  end
  return res
end
 
local space_chars  = create_set(" ", "\t", "\r", "\n")
local delim_chars  = create_set(" ", "\t", "\r", "\n", "]", "}", ",")
local escape_chars  = create_set("\\", "/", '"', "b", "f", "n", "r", "t", "u")
local literals      = create_set("true", "false", "null")
 
local literal_map = {
  [ "true"  ] = true,
  [ "false" ] = false,
  [ "null"  ] = nil,
}
 
 
local function next_char(str, idx, set, negate)
  for i = idx, #str do
    if set[str:sub(i, i)] ~= negate then
      return i
    end
  end
  return #str + 1
end
 
 
local function decode_error(str, idx, msg)
  local line_count = 1
  local col_count = 1
  for i = 1, idx - 1 do
    col_count = col_count + 1
    if str:sub(i, i) == "\n" then
      line_count = line_count + 1
      col_count = 1
    end
  end
  error( string.format("%s at line %d col %d", msg, line_count, col_count) )
end
 
 
local function codepoint_to_utf8(n)
  -- http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=iws-appendixa
  local f = math.floor
  if n <= 0x7f then
    return string.char(n)
  elseif n <= 0x7ff then
    return string.char(f(n / 64) + 192, n % 64 + 128)
  elseif n <= 0xffff then
    return string.char(f(n / 4096) + 224, f(n % 4096 / 64) + 128, n % 64 + 128)
  elseif n <= 0x10ffff then
    return string.char(f(n / 262144) + 240, f(n % 262144 / 4096) + 128,
                      f(n % 4096 / 64) + 128, n % 64 + 128)
  end
  error( string.format("invalid unicode codepoint '%x'", n) )
end
 
 
local function parse_unicode_escape(s)
  local n1 = tonumber( s:sub(1, 4),  16 )
  local n2 = tonumber( s:sub(7, 10), 16 )
  -- Surrogate pair?
  if n2 then
    return codepoint_to_utf8((n1 - 0xd800) * 0x400 + (n2 - 0xdc00) + 0x10000)
  else
    return codepoint_to_utf8(n1)
  end
end
 
 
local function parse_string(str, i)
  local res = ""
  local j = i + 1
  local k = j
 
  while j <= #str do
    local x = str:byte(j)
 
    if x < 32 then
      decode_error(str, j, "control character in string")
 
    elseif x == 92 then -- `\`: Escape
      res = res .. str:sub(k, j - 1)
      j = j + 1
      local c = str:sub(j, j)
      if c == "u" then
        local hex = str:match("^[dD][89aAbB]%x%x\\u%x%x%x%x", j + 1)
                or str:match("^%x%x%x%x", j + 1)
                or decode_error(str, j - 1, "invalid unicode escape in string")
        res = res .. parse_unicode_escape(hex)
        j = j + #hex
      else
        if not escape_chars[c] then
          decode_error(str, j - 1, "invalid escape char '" .. c .. "' in string")
        end
        res = res .. escape_char_map_inv[c]
      end
      k = j + 1
 
    elseif x == 34 then -- `"`: End of string
      res = res .. str:sub(k, j - 1)
      return res, j + 1
    end
 
    j = j + 1
  end
 
  decode_error(str, i, "expected closing quote for string")
end
 
 
local function parse_number(str, i)
  local x = next_char(str, i, delim_chars)
  local s = str:sub(i, x - 1)
  local n = tonumber(s)
  if not n then
    decode_error(str, i, "invalid number '" .. s .. "'")
  end
  return n, x
end
 
 
local function parse_literal(str, i)
  local x = next_char(str, i, delim_chars)
  local word = str:sub(i, x - 1)
  if not literals[word] then
    decode_error(str, i, "invalid literal '" .. word .. "'")
  end
  return literal_map[word], x
end
 
 
local function parse_array(str, i)
  local res = {}
  local n = 1
  i = i + 1
  while 1 do
    local x
    i = next_char(str, i, space_chars, true)
    -- Empty / end of array?
    if str:sub(i, i) == "]" then
      i = i + 1
      break
    end
    -- Read token
    x, i = parse(str, i)
    res[n] = x
    n = n + 1
    -- Next token
    i = next_char(str, i, space_chars, true)
    local chr = str:sub(i, i)
    i = i + 1
    if chr == "]" then break end
    if chr ~= "," then decode_error(str, i, "expected ']' or ','") end
  end
  return res, i
end
 
 
local function parse_object(str, i)
  local res = {}
  i = i + 1
  while 1 do
    local key, val
    i = next_char(str, i, space_chars, true)
    -- Empty / end of object?
    if str:sub(i, i) == "}" then
      i = i + 1
      break
    end
    -- Read key
    if str:sub(i, i) ~= '"' then
      decode_error(str, i, "expected string for key")
    end
    key, i = parse(str, i)
    -- Read ':' delimiter
    i = next_char(str, i, space_chars, true)
    if str:sub(i, i) ~= ":" then
      decode_error(str, i, "expected ':' after key")
    end
    i = next_char(str, i + 1, space_chars, true)
    -- Read value
    val, i = parse(str, i)
    -- Set
    res[key] = val
    -- Next token
    i = next_char(str, i, space_chars, true)
    local chr = str:sub(i, i)
    i = i + 1
    if chr == "}" then break end
    if chr ~= "," then decode_error(str, i, "expected '}' or ','") end
  end
  return res, i
end
 
 
local char_func_map = {
  [ '"' ] = parse_string,
  [ "0" ] = parse_number,
  [ "1" ] = parse_number,
  [ "2" ] = parse_number,
  [ "3" ] = parse_number,
  [ "4" ] = parse_number,
  [ "5" ] = parse_number,
  [ "6" ] = parse_number,
  [ "7" ] = parse_number,
  [ "8" ] = parse_number,
  [ "9" ] = parse_number,
  [ "-" ] = parse_number,
  [ "t" ] = parse_literal,
  [ "f" ] = parse_literal,
  [ "n" ] = parse_literal,
  [ "[" ] = parse_array,
  [ "{" ] = parse_object,
}
 
 
parse = function(str, idx)
  local chr = str:sub(idx, idx)
  local f = char_func_map[chr]
  if f then
    return f(str, idx)
  end
  decode_error(str, idx, "unexpected character '" .. chr .. "'")
end
 
 
function json.decode(str)
  if type(str) ~= "string" then
    error("expected argument of type string, got " .. type(str))
  end
  local res, idx = parse(str, next_char(str, 1, space_chars, true))
  idx = next_char(str, idx, space_chars, true)
  if idx <= #str then
    decode_error(str, idx, "trailing garbage")
  end
  return res
end
 
 
return json
end)()
 
M.tildeverse = M.json.decode[==[
{
{
     "members": [
     "members": [

Revision as of 19:32, 4 June 2021

Documentation for this module may be created at Module:Sandbox/doc 

local M = {}

function M.hello(F)
	local whom = F.args[1]
	if whom == nil then return 'Hi!' end
	return [[Hello, ]] .. whom .. '!'
end

function M:fizzbuzz()
	local r = ''
	for i = 1, 100 do
		local s = ''
		if i % 3 == 0 then
			s = s .. 'Fizz'
		end
		if i % 5 == 0 then
			s = s .. 'Buzz'
		end
		if s == '' then
			s = s .. i
		end
		r = r .. s .. "\n"
	end
	return r
end

M.tildeverse = mw.text.jsonDecode[==[
{
    "members": [
        {
            "description": "aussies.space is a tilde located in australia focused around australian tilde users.",
            "link": "https://aussies.space",
            "gopher": "aussies.space",
            "name": "aussies.space",
            "created": "2019-02-19T19:44:58.0Z",
            "channel": "#aussie",
            "os": "ubuntu lts",
            "sysadmins": [
                [
                    "fosslinux",
                    "https://fosslinux.me"
                ]
            ]
        },
        {
            "description": "cosmic.voyage is a tilde community based around a collaborative science-fiction universe.",
            "link": "https://cosmic.voyage",
            "gopher": "cosmic.voyage",
            "name": "cosmic.voyage",
            "created": "2018-11-20T04:43:32Z",
            "channel": "#cosmic",
            "os": "ubuntu lts",
            "sysadmins": [
                [
                    "tomasino",
                    "https://tomasino.org"
                ],
                [
                    "fosslinux",
                    "https://fosslinux.me"
                ]
            ]
        },
        {
            "description": "Ctrl-C Club is a Linux server offering free SSH and web accounts to users who want to build webpages, chat online, learn Linux, play text console games, or fiddle around writing software.",
            "link": "http://ctrl-c.club",
            "gopher": "",
            "name": "ctrl-c.club",
            "created": "2014-12-06T06:13:44Z",
            "channel": "#ctrl-c",
            "os": "ubuntu lts",
            "sysadmins": [
                [
                    "calamitous",
                    "http://ctrl-c.club/~calamitous/"
                ]
            ]
        },
        {
            "description": "envs.net is a minimalist, non-commercial shared linux system and will always be free to use. - located in germany",
            "link": "https://envs.net",
            "gopher": "envs.net",
            "name": "envs",
            "created": "2018-08-11T22:21:07Z",
            "channel": "#envs",
            "os": "debian",
            "sysadmins": [
                [
                    "creme",
                    "https://envs.net/~creme/"
                ]
            ]
        },
        {
            "description": "RadioFreqs.space is a .space for RadioFreqs to share, learn and make!",
            "link": "https://radiofreqs.space",
            "gopher": "radiofreqs.space",
            "name": "radiofreqs.space",
            "created": "2019-04-11T04:34:08Z",
            "channel": "#radiofreqs, #hamradio",
            "os": "openbsd",
            "sysadmins": [
                [
                    "nonlinear",
                    "https://nonlinear.radiofreqs.space"
                ]
            ]
        },
        {
            "description": "An experimental software community with a 199X aesthetic.",
            "link": "http://rw.rs",
            "gopher": "",
            "name": "rw.rs",
            "created": "2019-04-13T07:53:39Z",
            "channel": "#rw.rs",
            "os": "debian",
            "sysadmins": [
                [
                    "adsr",
                    "http://rw.rs/~adsr/"
                ]
            ]
        },
        {
            "description": "Un tilde pero en castellano -- a small spanish-speaking tilde",
            "link": "https://texto-plano.xyz",
            "gopher": "texto-plano.xyz",
            "name": "texto-plano.xyz",
            "created": "2020-10-30T15:27:11.0Z",
            "channel": "#texto-plano",
            "os": "openbsd",
            "sysadmins": [
                [
                    "ffuentes",
                    "https://texto-plano.xyz/~ffuentes/"
                ]
            ]
        },
        {
            "description": "thunix offers Shell (SSH) accounts, Web Hosting, Email Accounts, and many other things to people free of charge.",
            "link": "https://www.thunix.net",
            "gopher": "thunix.net",
            "name": "thunix",
            "created": "2019-02-10T03:13:23Z",
            "channel": "#thunix",
            "os": "debian stable",
            "sysadmins": [
                [
                    "fosslinux",
                    "https://www.thunix.net/~fosslinux"
                ],
                [
                    "naglfar",
                    "https://www.thunix.net/~naglfar"
                ],
                [
                    "ubergeek",
                    "https://www.thunix.net/~ubergeek"
                ]
            ]
        },
        {
            "description": "tilde.club is not a social network it is one tiny totally standard unix computer that people respectfully use together in their shared quest to build awesome web pages",
            "link": "https://tilde.club",
            "gopher": "tilde.club",
            "name": "tilde.club",
            "created": "2014-09-30T02:42:24Z",
            "channel": "#club",
            "os": "fedora",
            "sysadmins": [
                [
                    "deepend",
                    "https://tilde.club/~deepend/"
                ],
                [
                    "ben",
                    "https://tilde.club/~ben/"
                ]
            ]
        },
        {
            "description": "A public-access UNIX system running OpenBSD",
            "link": "https://tilde.institute",
            "gopher": "tilde.institute",
            "name": "tilde.institute",
            "created": "2018-11-22T02:53:08Z",
            "channel": "#institute",
            "os": "openbsd",
            "sysadmins": [
                [
                    "gbmor",
                    "https://gbmor.dev"
                ],
                [
                    "kneezle",
                    "https://kneezle.tilde.institute/"
                ]
            ]
        },
        {
            "description": "tilde.pink is a gopher-only tilde running on NetBSD open to everyone",
            "link": "https://tilde.pink",
            "gopher": "tilde.pink",
            "name": "tilde.pink",
            "created": "2019-04-14T00:23:59Z",
            "channel": "#pink",
            "os": "netbsd",
            "sysadmins": [
                [
                    "tiwesdaeg",
                    "gopher://tilde.pink/1/~tiwesdaeg/"
                ]
            ]
        },
        {
            "description": "non-commercial space for teaching, learning, and enjoying the social medium of unix",
            "link": "https://tilde.team",
            "gopher": "tilde.team",
            "name": "tilde.team",
            "created": "2017-05-30T20:25:48Z",
            "channel": "#team",
            "os": "ubuntu lts and freebsd",
            "sysadmins": [
                [
                    "ben",
                    "https://ben.tilde.team/"
                ],
                [
                    "cmccabe",
                    "https://cmccabe.tilde.team/"
                ],
                [
                    "khuxkm",
                    "https://khuxkm.tilde.team/"
                ]
            ]
        },
        {
            "description": "intentional digital community for making art, socializing, and learning",
            "link": "https://tilde.town",
            "gopher": "tilde.town",
            "name": "tilde.town",
            "created": "2014-10-11T16:02:25Z",
            "channel": "#town",
            "os": "ubuntu lts",
            "sysadmins": [
                [
                    "vilmibm",
                    "https://tilde.town/~vilmibm/"
                ],
                [
                    "equa",
                    "https://tilde.town/~equa/"
                ],
                [
                    "archangelic",
                    "https://tilde.town/~archangelic/"
                ],
                [
                    "l0010o0001l",
                    "https://tilde.town/~l0010o0001l/"
                ]
            ]
        },
                {
            "description": "Social Community inside your Terminal with chat, email, games and more",
            "link": "https://yourtilde.com",
            "gopher": "yourtilde.com",
            "name": "YourTilde",
            "created": "2017-12-28T05:00:25Z",
            "channel": "#YourTilde",
            "os": "Fedora",
            "sysadmins": [
                [
                    "deepend",
                    "https://yourtilde.com/~deepend/"
                ]
            ]
        }
   ]
}
]==]

local tildes = {}

for _, v in ipairs(M.tildeverse.members) do
	table.insert(tildes, v.name)
end

M.list = function()
	return '* [[' .. table.concat(tildes, "]]\n* [[") .. "]]\n"
end

return M
Retrieved from "https://tilde.wiki/index.php?title=Module:Sandbox&oldid=627"