/usr/share/texmf-texlive/tex/luatex/luatextra/luatextra.lua is in texlive-luatex 2009-15.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- This is file `luatextra.lua',
-- generated with the docstrip utility.
--
-- The original source files were:
--
-- luatextra.dtx (with options: `lua')
-- This is a generated file.
--
-- Copyright (C) 2009 by Elie Roux <elie.roux@telecom-bretagne.eu>
--
-- This work is under the CC0 license.
--
-- This work consists of the main source file luainputenc.dtx
-- and the derived files
-- luatextra.sty, luatextra.lua, luatextra-latex.tex, luatextra.pdf
--
do
local luatextrapath = kpse.find_file("luatextra.lua")
if luatextrapath then
if luatextrapath:sub(1,2) == "./" then
luatextrapath = luatextrapath:sub(3)
end
texio.write_nl('('..luatextrapath)
end
end
luatextra = {}
module("luatextra", package.seeall)
luatextra.modules = {}
luatextra.modules['luatextra'] = {
version = 0.95,
name = "luatextra",
date = "2009/12/16",
description = "Additional low level functions for LuaTeX",
author = "Elie Roux",
copyright = "Elie Roux, 2009",
license = "CC0",
}
local format = string.format
luatextra.internal_warning_spaces = " "
function luatextra.internal_warning(msg)
if not msg then return end
texio.write_nl(format("\nLuaTeXtra Warning: %s\n\n", msg))
end
luatextra.internal_error_spaces = " "
function luatextra.internal_error(msg)
if not msg then return end
tex.sprint(format("\\immediate\\write16{}\\errmessage{LuaTeXtra error: %s^^J^^J}", msg))
end
function luatextra.module_error(package, msg, helpmsg)
if not package or not msg then
return
end
if helpmsg then
tex.sprint(format("\\errhelp{%s}", helpmsg))
end
tex.sprint(format("\\luatexModuleError{%s}{%s}", package, msg))
end
function luatextra.module_warning(modulename, msg)
if not modulename or not msg then
return
end
texio.write_nl(format("\nModule %s Warning: %s\n\n", modulename, msg))
end
function luatextra.module_log(modulename, msg)
if not modulename or not msg then
return
end
texio.write_nl('log', format("%s: %s", modulename, msg))
end
function luatextra.module_term(modulename, msg)
if not modulename or not msg then
return
end
texio.write_nl('term', format("%s: %s", modulename, msg))
end
function luatextra.module_info(modulename, msg)
if not modulename or not msg then
return
end
texio.write_nl(format("%s: %s\n", modulename, msg))
end
function luatextra.find_module_file(name)
if string.sub(name, -4) ~= '.lua' then
name = name..'.lua'
end
path = kpse.find_file(name, 'tex')
if not path then
path = kpse.find_file(name, 'texmfscripts')
end
return path, name
end
luatextra.module = module
function luatextra.use_module(name)
if not name or luatextra.modules[name] then
return
end
local path, filename = luatextra.find_module_file(name)
if not path then
luatextra.internal_error(format("unable to find lua module %s", name))
else
if path:sub(1,2) == "./" then
path = path:sub(3)
end
texio.write_nl('('..path)
dofile(path)
if not luatextra.modules[name] then
luatextra.internal_warning(format("You have requested module `%s',\n%s but the file %s does not provide it.", name, luatextra.internal_warning_spaces, filename))
end
if not package.loaded[name] then
luatextra.module(name, package.seeall)
end
texio.write(')')
end
end
function luatextra.datetonumber(date)
numbers = string.gsub(date, "(%d+)/(%d+)/(%d+)", "%1%2%3")
return tonumber(numbers)
end
function luatextra.isdate(date)
for _, _ in string.gmatch(date, "%d+/%d+/%d+") do
return true
end
return false
end
local date, number = 1, 2
function luatextra.versiontonumber(version)
if luatextra.isdate(version) then
return {type = date, version = luatextra.datetonumber(version), orig = version}
else
return {type = number, version = tonumber(version), orig = version}
end
end
luatextra.requiredversions = {}
function luatextra.require_module(name, version)
if not name then
return
end
if not version then
return luatextra.use_module(name)
end
luaversion = luatextra.versiontonumber(version)
if luatextra.modules[name] then
if luaversion.type == date then
if luatextra.datetonumber(luatextra.modules[name].date) < luaversion.version then
luatextra.internal_error(format("found module `%s' loaded in version %s, but version %s was required", name, luatextra.modules[name].date, version))
end
else
if luatextra.modules[name].version < luaversion.version then
luatextra.internal_error(format("found module `%s' loaded in version %.02f, but version %s was required", name, luatextra.modules[name].version, version))
end
end
else
luatextra.requiredversions[name] = luaversion
luatextra.use_module(name)
end
end
function luatextra.provides_module(mod)
if not mod then
luatextra.internal_error('cannot provide nil module')
return
end
if not mod.version or not mod.name or not mod.date or not mod.description then
luatextra.internal_error('invalid module registered, fields name, version, date and description are mandatory')
return
end
requiredversion = luatextra.requiredversions[mod.name]
if requiredversion then
if requiredversion.type == date and requiredversion.version > luatextra.datetonumber(mod.date) then
luatextra.internal_error(format("loading module %s in version %s, but version %s was required", mod.name, mod.date, requiredversion.orig))
elseif requiredversion.type == number and requiredversion.version > mod.version then
luatextra.internal_error(format("loading module %s in version %.02f, but version %s was required", mod.name, mod.version, requiredversion.orig))
end
end
luatextra.modules[mod.name] = module
texio.write_nl('log', format("Lua module: %s %s v%.02f %s\n", mod.name, mod.date, mod.version, mod.description))
end
luatextra.use_module('luaextra')
function luatextra.kpse_module_loader(mod)
local file = luatextra.find_module_file(mod)
if file then
local loader, error = loadfile(file)
if loader then
texio.write_nl("(" .. file .. ")")
return loader
end
return "\n\t[luatextra.kpse_module_loader] Loading error:\n\t"
.. error
end
return "\n\t[luatextra.kpse_module_loader] Search failed"
end
table.insert(package.loaders, luatextra.kpse_module_loader)
luatextra.attributes = {}
tex.attributenumber = luatextra.attributes
function luatextra.attributedef_from_tex(name, number)
truename = name:gsub('[\\ ]', '')
luatextra.attributes[truename] = tonumber(number)
end
luatextra.catcodetables = {}
tex.catcodetablenumber = luatextra.catcodetables
function luatextra.catcodetabledef_from_tex(name, number)
truename = name:gsub('[\\ ]', '')
luatextra.catcodetables[truename] = tonumber(number)
end
function luatextra.catcodetable_do_shortcuts()
local cat = tex.catcodetablenumber
local val = cat['CatcodeTableLaTeX']
if val then
cat['latex'] = val
end
val = cat['CatcodeTableLaTeXAtLetter']
if val then
cat['latex-package'] = val
cat['latex-atletter'] = val
end
val = cat['CatcodeTableIniTeX']
if val then
cat['ini'] = val
end
val = cat['CatcodeTableExpl']
if val then
cat['expl3'] = val
cat['expl'] = val
end
val = cat['CatcodeTableString']
if val then
cat['string'] = val
end
val = cat['CatcodeTableOther']
if val then
cat['other'] = val
end
end
function luatextra.open_read_file(filename)
local path = kpse.find_file(filename)
local env = {
['filename'] = filename,
['path'] = path,
}
luamcallbacks.call('pre_read_file', env)
path = env.path
if not path then
return
end
local f = env.file
if not f then
f = io.open(path)
env.file = f
end
if not f then
return
end
env.reader = luatextra.reader
env.close = luatextra.close
return env
end
function luatextra.reader(env)
local line = (env.file):read()
line = luamcallbacks.call('file_reader', env, line)
return line
end
function luatextra.close(env)
(env.file):close()
luamcallbacks.call('file_close', env)
end
function luatextra.default_reader(env, line)
return line
end
function luatextra.default_close(env)
return
end
function luatextra.default_pre_read(env)
return env
end
do
if tex.luatexversion < 36 then
fontloader = fontforge
end
end
function luatextra.find_font(name)
local types = {'ofm', 'ovf', 'opentype fonts', 'truetype fonts'}
local path = kpse.find_file(name)
if path then return path end
for _,t in pairs(types) do
path = kpse.find_file(name, t)
if path then return path end
end
return nil
end
function luatextra.font_load_error(error)
luatextra.module_warning('luatextra', string.format('%s\nloading lmr10 instead...', error))
end
function luatextra.load_default_font(size)
return font.read_tfm("lmr10", size)
end
function luatextra.define_font(name, size)
if (size < 0) then size = (- 655.36) * size end
local fontinfos = {
asked_name = name,
name = name,
size = size
}
callback.call('font_syntax', fontinfos)
name = fontinfos.name
local path = fontinfos.path
if not path then
path = luatextra.find_font(name)
fontinfos.path = luatextra.find_font(name)
end
if not path then
luatextra.font_load_error("unable to find font "..name)
return luatextra.load_default_font(size)
end
if not fontinfos.filename then
fontinfos.filename = fpath.basename(path)
end
local ext = fpath.suffix(path)
local f
if ext == 'tfm' or ext == 'ofm' then
f = font.read_tfm(name, size)
elseif ext == 'vf' or ext == 'ovf' then
f = font.read_vf(name, size)
elseif ext == 'ttf' or ext == 'otf' or ext == 'ttc' then
f = callback.call('open_otf_font', fontinfos)
else
luatextra.font_load_error("unable to determine the type of font "..name)
f = luatextra.load_default_font(size)
end
if not f then
luatextra.font_load_error("unable to load font "..name)
f = luatextra.load_default_font(size)
end
callback.call('post_font_opening', f, fontinfos)
return f
end
function luatextra.default_font_syntax(fontinfos)
return
end
function luatextra.default_open_otf(fontinfos)
return nil
end
function luatextra.default_post_font(f, fontinfos)
return true
end
function luatextra.register_font_callback()
callback.add('define_font', luatextra.define_font, 'luatextra.define_font')
end
do
luatextra.use_module('luamcallbacks')
callback.create('pre_read_file', 'simple', luatextra.default_pre_read)
callback.create('file_reader', 'data', luatextra.default_reader)
callback.create('file_close', 'simple', luatextra.default_close)
callback.add('open_read_file', luatextra.open_read_file, 'luatextra.open_read_file')
callback.create('font_syntax', 'simple', luatextra.default_font_syntax)
callback.create('open_otf_font', 'first', luatextra.default_open_otf)
callback.create('post_font_opening', 'simple', luatextra.default_post_font)
if luatextrapath then
texio.write(')')
end
end
--
-- End of File `luatextra.lua'.
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