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--
-- This is file `expl3.lua',
-- generated with the docstrip utility.
--
-- The original source files were:
--
-- l3luatex.dtx (with options: `package,lua')
--
-- Copyright (C) 1990-2020 The LaTeX3 Project
--
-- It may be distributed and/or modified under the conditions of
-- the LaTeX Project Public License (LPPL), either version 1.3c of
-- this license or (at your option) any later version. The latest
-- version of this license is in the file:
--
-- https://www.latex-project.org/lppl.txt
--
-- This file is part of the "l3kernel bundle" (The Work in LPPL)
-- and all files in that bundle must be distributed together.
--
-- File: l3luatex.dtx
l3kernel = l3kernel or { }
local io = io
local kpse = kpse
local lfs = lfs
local math = math
local md5 = md5
local os = os
local string = string
local tex = tex
local texio = texio
local tonumber = tonumber
local unicode = unicode
local abs = math.abs
local byte = string.byte
local floor = math.floor
local format = string.format
local gsub = string.gsub
local lfs_attr = lfs.attributes
local md5_sum = md5.sum
local open = io.open
local os_clock = os.clock
local os_date = os.date
local os_exec = os.execute
local setcatcode = tex.setcatcode
local sprint = tex.sprint
local cprint = tex.cprint
local write = tex.write
local write_nl = texio.write_nl
local utf8_char = (utf8 and utf8.char) or (utf and utf.char) or unicode.utf8.char
local kpse_find = (resolvers and resolvers.findfile) or kpse.find_file
local function escapehex(str)
write((gsub(str, ".",
function (ch) return format("%02X", byte(ch)) end)))
end
local charcat
function charcat(charcode, catcode)
cprint(catcode, utf8_char(charcode))
end
l3kernel.charcat = charcat
local base_time = 0
local function elapsedtime()
local val = (os_clock() - base_time) * 65536 + 0.5
if val > 2147483647 then
val = 2147483647
end
write(format("%d",floor(val)))
end
l3kernel.elapsedtime = elapsedtime
local function resettimer()
base_time = os_clock()
end
l3kernel.resettimer = resettimer
local function filedump(name,offset,length)
local file = kpse_find(name,"tex",true)
if file then
local length = tonumber(length) or lfs_attr(file,"size")
local offset = tonumber(offset) or 0
local f = open(file,"rb")
if f then
if offset > 0 then
f:seek("set",offset)
end
local data = f:read(length)
escapehex(data)
f:close()
end
end
end
l3kernel.filedump = filedump
local function filemdfivesum(name)
local file = kpse_find(name, "tex", true)
if file then
local f = open(file, "rb")
if f then
local data = f:read("*a")
escapehex(md5_sum(data))
f:close()
end
end
end
l3kernel.filemdfivesum = filemdfivesum
local function filemoddate(name)
local file = kpse_find(name, "tex", true)
if file then
local date = lfs_attr(file, "modification")
if date then
local d = os_date("*t", date)
if d.sec >= 60 then
d.sec = 59
end
local u = os_date("!*t", date)
local off = 60 * (d.hour - u.hour) + d.min - u.min
if d.year ~= u.year then
if d.year > u.year then
off = off + 1440
else
off = off - 1440
end
elseif d.yday ~= u.yday then
if d.yday > u.yday then
off = off + 1440
else
off = off - 1440
end
end
local timezone
if off == 0 then
timezone = "Z"
else
local hours = floor(off / 60)
local mins = abs(off - hours * 60)
timezone = format("%+03d", hours)
.. "'" .. format("%02d", mins) .. "'"
end
write("D:"
.. format("%04d", d.year)
.. format("%02d", d.month)
.. format("%02d", d.day)
.. format("%02d", d.hour)
.. format("%02d", d.min)
.. format("%02d", d.sec)
.. timezone)
end
end
end
l3kernel.filemoddate = filemoddate
local function filesize(name)
local file = kpse_find(name, "tex", true)
if file then
local size = lfs_attr(file, "size")
if size then
write(size)
end
end
end
l3kernel.filesize = filesize
local function strcmp(A, B)
if A == B then
write("0")
elseif A < B then
write("-1")
else
write("1")
end
end
l3kernel.strcmp = strcmp
local function shellescape(cmd)
local status,msg = os_exec(cmd)
if status == nil then
write_nl("log","runsystem(" .. cmd .. ")...(" .. msg .. ")\n")
elseif status == 0 then
write_nl("log","runsystem(" .. cmd .. ")...executed\n")
else
write_nl("log","runsystem(" .. cmd .. ")...failed " .. (msg or "") .. "\n")
end
end
l3kernel.shellescape = shellescape
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