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Edit File: l3build

#!/usr/bin/env texlua

--[[

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

http://www.latex-project.org/lppl.txt

This file is part of the "l3build bundle" (The Work in LPPL)
and all files in that bundle must be distributed together.

-----------------------------------------------------------------------

The development version of the bundle can be found at

https://github.com/latex3/l3build

for those people who are interested.

--]]

-- Version information
release_date = "2022-11-10"

-- File operations are aided by the LuaFileSystem module
local lfs = require("lfs")

-- Local access to functions

local assert           = assert
local ipairs           = ipairs
local insert           = table.insert
local lookup           = kpse.lookup
local match            = string.match
local gsub             = string.gsub
local next             = next
local print            = print
local select           = select
local tonumber         = tonumber
local exit             = os.exit
local open             = io.open
local stdout           = io.stdout

-- l3build setup and functions
kpse.set_program_name("kpsewhich")
build_kpse_path = match(lookup("l3build.lua"),"(.*[/])")
local function build_require(s)
  require(lookup("l3build-"..s..".lua", { path = build_kpse_path } ) )
end

-- Minimal code to do basic checks
build_require("arguments")
build_require("help")

build_require("file-functions")
build_require("typesetting")
build_require("aux")
build_require("clean")
build_require("check")
build_require("ctan")
build_require("install")
build_require("unpack")
build_require("manifest")
build_require("manifest-setup")
build_require("tagging")
build_require("upload")
build_require("stdmain")

-- This has to come after stdmain(),
-- and that has to come after the functions are defined
if options["target"] == "help" then
  help()
  exit(0)
elseif options["target"] == "version" then
  version()
  exit(0)
end

-- Look for some configuration details
if fileexists("build.lua") then
  dofile("build.lua")
else
  print("Error: Cannot find configuration build.lua")
  exit(1)
end

-- Load standard settings for variables:
-- comes after any user versions
build_require("variables")

-- Ensure that directories are 'space safe'
maindir       = escapepath(maindir)
docfiledir    = escapepath(docfiledir)
sourcefiledir = escapepath(sourcefiledir)
supportdir    = escapepath(supportdir)
testfiledir   = escapepath(testfiledir)
testsuppdir   = escapepath(testsuppdir)
builddir      = escapepath(builddir)
distribdir    = escapepath(distribdir)
localdir      = escapepath(localdir)
resultdir     = escapepath(resultdir)
testdir       = escapepath(testdir)
typesetdir    = escapepath(typesetdir)
unpackdir     = escapepath(unpackdir)

-- Tidy up the epoch setting
-- Force an epoch if set at the command line
-- Must be done after loading variables, etc.
if options["epoch"] then
  epoch           = options["epoch"]
  forcecheckepoch = true
  forcedocepoch   = true
end
epoch = normalise_epoch(epoch)

-- Sanity check
check_engines()

--
-- Deal with multiple configs for tests
--

-- When we have specific files to deal with, only use explicit configs
-- (or just the std one)
if options["names"] then
  checkconfigs = options["config"] or {stdconfig}
else
  checkconfigs = options["config"] or checkconfigs
end

if #checkconfigs > 1 then
  if options["target"] == "check" or options["target"] == "bundlecheck" then
    local errorlevel = 0
    local failed = { }
    for i = 1, #checkconfigs do
      options["config"] = {checkconfigs[i]}
      errorlevel = call({"."}, "check", options)
      if errorlevel ~= 0 then
        if options["halt-on-error"] then
          exit(1)
        else
          insert(failed,checkconfigs[i])
        end
      end
    end
    if next(failed) then
      for _,config in ipairs(failed) do
        print("Failed tests for configuration " .. config .. ":")
        print("\n  Check failed with difference files")
        local testdir = testdir
        if config ~= "build" then
          testdir = testdir .. "-" .. config
        end
        for _,i in ipairs(ordered_filelist(testdir,"*" .. os_diffext)) do
          print("  - " .. testdir .. "/" .. i)
        end
        print("")
      end
      if options["show-saves"] then
        local savecmds, recheckcmds = "", ""
        for _,config in ipairs(failed) do
          local testdir = testdir
          if config ~= "build" then
            testdir = testdir .. "-" .. config
          end
          local f = open(testdir .. "/.savecommands")
          if not f then
            print("Error: Cannot find save commands for configuration " ..
              config)
            exit(2)
          end
          for line in f:lines() do
             if line == "" then break end
             savecmds = savecmds .. "  " .. line .. "\n"
          end
          for line in f:lines() do
             recheckcmds = recheckcmds .. "  " .. line .. "\n"
          end
          f:close()
        end
        print"To regenerate the test files, run\n"
        print(savecmds)
        if recheckcmds ~= "" then
          print"To detect engine specific differences, run after that\n"
          print(recheckcmds)
        end
      end
      exit(1)
    else
      -- Avoid running the 'main' set of tests twice
      exit(0)
    end
  elseif options["target"] == "clean" then
    local failure
    for i = 1, #checkconfigs do
      options["config"] = {checkconfigs[i]}
      failure = 0 ~= call({"."}, "clean", options) or failure
    end
    exit(failure and 1 or 0)
  end
end
if #checkconfigs == 1 and
   checkconfigs[1] ~= "build" and
   (options["target"] == "check" or options["target"] == "save" or options["target"] == "clean") then
   local config = "./" .. gsub(checkconfigs[1],"%.lua$","") .. ".lua"
   if fileexists(config) then
     local savedtestfiledir = testfiledir
     dofile(config)
     testdir = testdir .. "-" .. checkconfigs[1]
     -- Reset testsuppdir if required
     if savedtestfiledir ~= testfiledir and
       testsuppdir == savedtestfiledir .. "/support" then
       testsuppdir = testfiledir .. "/support"
     end
   else
     print("Error: Cannot find configuration " ..  checkconfigs[1])
     exit(1)
   end
end

-- Call the main function
main(options["target"], options["names"])

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