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if not modules then modules = { } end modules ['data-lua'] = {
version = 1.001,
comment = "companion to luat-lib.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- This is now a plug in into l-lua (as we also use the extra paths elsewhere).
local resolvers, package = resolvers, package
local gsub = string.gsub
local concat = table.concat
local addsuffix = file.addsuffix
local P, Cs, lpegmatch = lpeg.P, lpeg.Cs, lpeg.match
local libsuffixes = { 'tex', 'lua' }
local clibsuffixes = { 'lib' }
local libformats = { 'TEXINPUTS', 'LUAINPUTS' }
local clibformats = { 'CLUAINPUTS' }
local helpers = package.helpers
trackers.register("resolvers.libraries", function(v) helpers.trace = v end)
trackers.register("resolvers.locating", function(v) helpers.trace = v end)
helpers.report = logs.reporter("resolvers","libraries")
local pattern = Cs(P("!")^0 / "" * (P("/") * P(-1) / "/" + P("/")^1 / "/" + 1)^0)
local function cleanpath(path) -- hm, don't we have a helper for this?
return resolvers.resolve(lpegmatch(pattern,path))
end
helpers.cleanpath = cleanpath
local loadedaslib = helpers.loadedaslib
local loadedbylua = helpers.loadedbylua
local loadedbypath = helpers.loadedbypath
local notloaded = helpers.notloaded
local getlibpaths = package.libpaths
local getclibpaths = package.clibpaths
function helpers.libpaths(libhash)
local libpaths = { }
for i=1,#libformats do
local paths = resolvers.expandedpathlistfromvariable(libformats[i])
for i=1,#paths do
local path = cleanpath(paths[i])
if not libhash[path] then
libpaths[#libpaths+1] = path
libhash[path] = true
end
end
end
return libpaths
end
function helpers.clibpaths(clibhash)
local clibpaths = { }
for i=1,#clibformats do
local paths = resolvers.expandedpathlistfromvariable(clibformats[i])
for i=1,#paths do
local path = cleanpath(paths[i])
if not clibhash[path] then
clibpaths[#clibpaths+1] = path
clibhash[path] = true
end
end
end
return clibpaths
end
local function loadedbyformat(name,rawname,suffixes,islib)
local trace = helpers.trace
local report = helpers.report
if trace then
report("! locating %a as %a using formats %a",rawname,name,suffixes)
end
for i=1,#suffixes do -- so we use findfile and not a lookup loop
local format = suffixes[i]
local resolved = resolvers.findfile(name,format) or ""
if trace then
report("! checking for %a using format %a",name,format)
end
if resolved ~= "" then
if trace then
report("! lib %a located on %a",name,resolved)
end
if islib then
return true, loadedaslib(resolved,rawname)
else
return true, loadfile(resolved)
end
end
end
end
helpers.loadedbyformat = loadedbyformat
-- alternatively we could set the package.searchers
function helpers.loaded(name)
local thename = gsub(name,"%.","/")
local luaname = addsuffix(thename,"lua")
local libname = addsuffix(thename,os.libsuffix)
local libpaths = getlibpaths()
local clibpaths = getclibpaths()
local done, result = loadedbyformat(luaname,name,libsuffixes,false)
if done then
return result
end
local done, result = loadedbyformat(libname,name,clibsuffixes,true)
if done then
return result
end
local done, result = loadedbypath(luaname,name,libpaths,false,"lua")
if done then
return result
end
local done, result = loadedbypath(luaname,name,clibpaths,false,"lua")
if done then
return result
end
local done, result = loadedbypath(libname,name,clibpaths,true,"lib")
if done then
return result
end
local done, result = loadedbylua(name)
if done then
return result
end
return notloaded(name)
end
package.searchers[3] = nil -- get rid of the built in one
-- package.extraclibpath(environment.ownpath)
resolvers.loadlualib = require
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