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.json = (function()
--
-- 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": [
{
"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