view src/luan/modules/Boot.luan @ 1580:2975c932864d

require options
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 10 Feb 2021 23:56:59 -0700
parents c922446f53aa
children
line wrap: on
line source
require "java"
local System = require "java:java.lang.System"
local URL = require "java:java.net.URL"
local BasicLuan = require "java:luan.modules.BasicLuan"
local new_error = BasicLuan.new_error
local ipairs = BasicLuan.ipairs
local set_metatable = BasicLuan.set_metatable
local load = BasicLuan.load
local type = BasicLuan.type
local StringLuan = require "java:luan.modules.StringLuan"
local match = StringLuan.match  -- String.match
local matches = StringLuan.matches  -- String.matches
local IoLuan = require "java:luan.modules.IoLuan"
local LuanUrl = require "java:luan.modules.url.LuanUrl"
local LuanJava = require "java:luan.Luan"
local LuanTable = require "java:luan.LuanTable"
local get_local_cloned = BasicLuan.get_local_cloned
local set_local_cloned = BasicLuan.set_local_cloned
local is_immutable = BasicLuan.is_immutable
local raw_set = BasicLuan.raw_set


local Boot = {}


local function error(message)
	new_error(message).throw()
end
Boot.error = error

local function no_security(fn)
	LuanJava.checkCallerSecurity("no_security")
	return function(...)
		local security = LuanJava.setSecurity(nil)
		try
			return fn(...)
		finally
			security and LuanJava.setSecurity(security)
		end
	end
end
Boot.no_security = no_security


local local_metatable = {
	__index = get_local_cloned
}
function local_metatable.__new_index(tbl,key,value)
	if is_immutable(tbl) then
		set_local_cloned(tbl,key,value)
	else
		raw_set(tbl,key,value)
	end
end
Boot.local_metatable = local_metatable


local function new_LuanIn(io)
	local this = {}
	this.java = io
	this.to_string = io.to_string
	this.read_text = io.read_text
	this.read_binary = io.read_binary
	this.read_lines = io.read_lines
	this.read_blocks = io.read_blocks
	this.exists = io.exists
	this.checksum = io.checksum
	this.charset = io.charset
	this.set_charset = io.set_charset
	this.to_uri_string = io.to_uri_string
	return this
end
Boot.new_LuanIn = new_LuanIn

local function new_writer(writer)
	local this = {}
	this.java = writer
	this.write = writer.write
	this.close = writer.close
	return this
end

function Boot.text_writer(out)
	return new_writer( IoLuan.luanWriter(out) )
end

Boot.binary_writer = new_writer

local function new_LuanIO(io)
	local this = new_LuanIn(io)
	this.write = io.write
	this.write_text = io.write_text
	this.write_binary = io.write_binary

	function this.text_writer()
		return new_writer( io.text_writer() )
	end

	function this.binary_writer()
		return new_writer( io.binary_writer() )
	end

	return this
end

local schemes = {}
set_metatable(schemes,local_metatable)
--LuanTable.setSecurity(schemes,"schemes")

function schemes.null(path)
	return new_LuanIO( IoLuan.nullIO )
end

function schemes.string(path)
	return new_LuanIO( IoLuan.LuanString.new(path) )
end

function schemes.classpath(path)
	local cp = IoLuan.classpath(path)
	return cp and new_LuanIn(cp)
end

function schemes.luan(path)
	return schemes.classpath("luan/modules/"..path)
end

function schemes.stdin(path)
	local Io = require "luan:Io.luan"
	return Io.stdin
end


local function new_LuanUrl(io)
	local this = new_LuanIn(io)

	local function check()
		io.httpCon or error "must open first"
	end

	function this.get_header(name)
		check()
		return io.httpCon.getHeaderField(name)
	end

	function this.get_response_code()
		check()
		return io.httpCon.getResponseCode()
	end

	function this.get_response_message()
		check()
		return io.httpCon.getResponseMessage()
	end

	return this
end

local function url(path,options)
	return new_LuanUrl( LuanUrl.new(URL.new(path),options) )
end

function schemes.http(path,options)
	return url( "http:"..path, options )
end

function schemes.https(path,options)
	return url( "https:"..path, options )
end

local function new_BaseOs(io)
	local this = new_LuanIO(io)
	this.wait_for = io.wait_for
	return this
end

function schemes.os(path,options)
	return new_BaseOs( IoLuan.LuanOs.new(path,options) )
end

function schemes.bash(path,options)
	return new_BaseOs( IoLuan.LuanBash.new(path,options) )
end

local function new_LuanFile(io)
	local this = new_LuanIO(io)
	this.name = io.file.getName
	this.is_directory = io.file.isDirectory
	this.is_file = io.file.isFile
	this.delete = io.delete
	this.delete_on_exit = io.file.deleteOnExit
	this.mkdir = io.mkdir
	this.last_modified = io.file.lastModified
	this.set_last_modified = io.set_last_modified
	this.length = io.file.length
	this.rename_to = io.rename_to
	this.link_from = io.link_from
	this.symlink_from = io.symlink_from
	this.is_symbolic_link = io.is_symbolic_link

	function this.child(name)
		return new_LuanFile( io.child(name) )
	end

	function this.children()
		local raw = io.children()
		if raw == nil then
			return nil
		end
		local rtn = {}
		for _, child in ipairs(raw) do
			rtn[#rtn+1] = new_LuanFile(child)
		end
		return rtn
	end

	function this.parent()
		return new_LuanFile( io.parent() )
	end

	function this.canonical()
		return new_LuanFile( io.canonical() )
	end

	function this.create_temp_file(prefix,suffix)
		return new_LuanFile( io.create_temp_file(prefix,suffix) )
	end

	return this
end

function schemes.file(path)
	return new_LuanFile( IoLuan.LuanFile.new(path) )
end

Boot.schemes = schemes


local function uri(name,options)
	local scheme, location = match( name, "(?s)^([^:]+):(.*)$" )
	scheme or error( "invalid Io.uri name '"..name.."', missing scheme" )
	local opener = schemes[scheme] or error( "invalid scheme '"..scheme.."' in '"..name.."'" )
	return opener(location,options)
end
Boot.uri = uri


function Boot.read(uri_str,options)  -- for PackageLuan.java
	local u = uri(uri_str,options)
	if u==nil or not u.exists() then
		return nil
	end
	return u.read_text()
end

function Boot.load_file(file)
	if type(file) == "string" then
		if not matches(file,":") then
			file = "file:"..file
		end
		local u = uri(file)
		if u==nil or not u.exists() then
			return nil
		end
		local src = u.read_text()
		return load(src,file,true)
	elseif type(file) == "table" and file.read_text ~= nil then
		local src = file.read_text()
		local src_file = file.uri_string or file.to_uri_string()
		return load(src,src_file,true)
	else
		error("bad argument, expected string or uri table but got "..type(file))
	end
end


local error_mt = {}

function error_mt.__to_string(t)
	return t.java.getLuanStackTraceString()
end

function Boot.new_error_table(ex)  -- for LuanException.java
	local this = {}
	set_metatable(this,error_mt)
	this.java = ex
	this.get_message = ex.getMessage
	this.throw = ex.throwThis
	this.get_stack_trace_string = ex.getLuanStackTraceString
	this.get_java_stack_trace_string = ex.getJavaStackTraceString
	return this
end


return Boot