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#!/usr/bin/env lua5.1
local json = require "json"
local sha1 = require "sha1"
local lfs = require "lfs"
local inspect = require "inspect"
--local argparse = require "argparse"
--local parser = argparse()
--local args = parser:parse()
local args = {macro_dir = "/home/g/subs/automation-scripts/macros", config = "conf.lua", output = "DependencyControl.json"}
local config = loadfile(args.config)()
local function valid_namespace(name)
--[[ #### Rules for a valid namespace: ####
1. contains _at least_ one dot
2. must **not** start or end with a dot
3. must **not** contain series of two or more dots
4. the character set is restricted to: `A-Z`, `a-z`, `0-9`, `.`, `_`, `-`
__Examples__:
* l0.ASSFoundation
* l0.ASSFoundation.Common (for a separately version-controlled 'submodule')
* l0.ASSWipe
* a-mo.LineCollection
]]
return name:match("^[^.][%a%d._-]*%.[%a%d._-]*[^.]$") ~= nil
-- not 100% sure this works. it matches the examples, but idk if it matches invalid ones as well
end
local function clean_path(path, file)
-- don't want to be pedantic about paths, but still don't want paths with // in them
if path:sub(-1, -1) == "/" then path = path:sub(1, -2) end
return path .. "/" .. file
end
local function join_tables(dst, src)
for i, v in ipairs(src) do
table.insert(dst, v)
end
return dst
end
local function readfile(filename)
local f = io.open(filename)
local txt = f:read("*all")
f:close()
return txt
end
local function get_iso8601_date(time)
return os.date("%Y-%m-%d", time)
end
local function output_writer(file)
local is_file, f = pcall(io.open, file, "w")
if is_file then return f end
return io.stdout
end
local function err(msg)
if type(msg) == "table" then msg = inspect(msg) end
io.stderr:write(msg.."\n")
end
local function get_files(path)
local files = {}
for file in lfs.dir(path) do
local name, extension = file:match("^(.*)%.(.*)$") -- anything.anything
local absolute = clean_path(path, file)
if file == "." or file == ".." then -- silently skip dir and 1-level-up dir
elseif pcall(lfs.dir, absolute) then file = join_tables(files, get_files(absolute)) -- search recursively
elseif extension ~= "lua" then err(absolute .. ": not a lua file, skipping")
elseif not valid_namespace(name) then err(absolute .. ": invalid namespace, skipping")
else table.insert(files, absolute) end
end
return files
end
local function get_metadata(file)
local meta = {filename = nil, name = nil, description = nil, version = nil, author = nil, namespace = nil, depctrl = nil, sha1 = nil, release = nil}
-- having all those nils in the table doesn't really do anything in terms of functionality, but it lets me see what i need to put in it
meta.filename = file
meta.sha1 = sha1.sha1(readfile(file))
meta.release = get_iso8601_date(lfs.attributes(file, "modification"))
loadfile(file)()
-- script_name etc are now in our global scope
if config.ignoreCondition() then
err(file .. ": ignored by config, skipping")
return nil
end
meta.name = script_name
meta.description = script_description
meta.version = script_version
meta.author = script_author
meta.namespace = script_namespace
meta.depctrl = __feedmaker_version
return meta
end
local function clean_depctrl(depctrl)
local required = {}
for _, mod in ipairs(depctrl) do
if type(mod[1]) == "string" then
mod["moduleName"] = mod[1]
mod[1] = nil
else
mod[1]["moduleName"] = mod[1][1]
mod[1][1] = nil
end
table.insert(required, mod)
end
return required
end
local function make_feed(macros)
local feed = {
dependencyControlFeedFormatVersion = "0.3.0",
name = config.name,
description = config.description,
knownFeeds = {},
baseUrl = config.baseUrl,
url = config.url,
maintainer = config.maintainer,
fileBaseUrl = config.fileBaseUrl,
macros = {}
}
for _, script in ipairs(macros) do
local macro = {url = config.scriptUrl, author = script.author, name = script.name, description = script.description, channels = {}}
local channel_info = {version = script.version, released = script.release, default = true, files = {}}
channel_info.requiredModules = clean_depctrl(script.depctrl)
channel_info.files[".lua"] = {name = ".lua", url = config.fileUrl, sha1 = script.sha1}
macro.channels[config.channel] = channel_info
feed.macros[script.namespace] = macro
end
return json.encode(feed)
end
local function main()
local files = get_files(args.macro_dir)
local meta = {}
for _, file in ipairs(files) do
table.insert(meta, get_metadata(file))
end
local feed = make_feed(meta)
local out = output_writer(args.output)
out:write(feed)
out:close()
end
main()
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