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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"
}
-- some loading stuff ... we might move this one to slot 2 depending
-- on the developments (the loaders must not trigger kpse); we could
-- of course use a more extensive lib path spec
local trace_locating = false trackers.register("resolvers.locating", function(v) trace_locating = v end)
local report_libraries = logs.reporter("resolvers","libraries")
local gsub, insert = string.gsub, table.insert
local unpack = unpack or table.unpack
local resolvers, package = resolvers, package
local libformats = { 'luatexlibs', 'tex', 'texmfscripts', 'othertextfiles' } -- 'luainputs'
local clibformats = { 'lib' }
local _path_, libpaths, _cpath_, clibpaths
function package.libpaths()
if not _path_ or package.path ~= _path_ then
_path_ = package.path
libpaths = file.splitpath(_path_,";")
end
return libpaths
end
function package.clibpaths()
if not _cpath_ or package.cpath ~= _cpath_ then
_cpath_ = package.cpath
clibpaths = file.splitpath(_cpath_,";")
end
return clibpaths
end
local function thepath(...)
local t = { ... } t[#t+1] = "?.lua"
local path = file.join(unpack(t))
if trace_locating then
report_libraries("! appending '%s' to 'package.path'",path)
end
return path
end
local p_libpaths, a_libpaths = { }, { }
function package.appendtolibpath(...)
insert(a_libpath,thepath(...))
end
function package.prependtolibpath(...)
insert(p_libpaths,1,thepath(...))
end
-- beware, we need to return a loadfile result !
local function loaded(libpaths,name,simple)
for i=1,#libpaths do -- package.path, might become option
local libpath = libpaths[i]
local resolved = gsub(libpath,"%?",simple)
if trace_locating then -- more detail
report_libraries("! checking for '%s' on 'package.path': '%s' => '%s'",simple,libpath,resolved)
end
if file.is_readable(resolved) then
if trace_locating then
report_libraries("! lib '%s' located via 'package.path': '%s'",name,resolved)
end
return loadfile(resolved)
end
end
end
package.loaders[2] = function(name) -- was [#package.loaders+1]
if file.suffix(name) == "" then
name = file.addsuffix(name,"lua") -- maybe a list
if trace_locating then -- mode detail
report_libraries("! locating '%s' with forced suffix",name)
end
else
if trace_locating then -- mode detail
report_libraries("! locating '%s'",name)
end
end
for i=1,#libformats do
local format = libformats[i]
local resolved = resolvers.findfile(name,format) or ""
if trace_locating then -- mode detail
report_libraries("! checking for '%s' using 'libformat path': '%s'",name,format)
end
if resolved ~= "" then
if trace_locating then
report_libraries("! lib '%s' located via environment: '%s'",name,resolved)
end
return loadfile(resolved)
end
end
-- libpaths
local libpaths, clibpaths = package.libpaths(), package.clibpaths()
local simple = gsub(name,"%.lua$","")
local simple = gsub(simple,"%.","/")
local resolved = loaded(p_libpaths,name,simple) or loaded(libpaths,name,simple) or loaded(a_libpaths,name,simple)
if resolved then
return resolved
end
--
local libname = file.addsuffix(simple,os.libsuffix)
for i=1,#clibformats do
-- better have a dedicated loop
local format = clibformats[i]
local paths = resolvers.expandedpathlistfromvariable(format)
for p=1,#paths do
local path = paths[p]
local resolved = file.join(path,libname)
if trace_locating then -- mode detail
report_libraries("! checking for '%s' using 'clibformat path': '%s'",libname,path)
end
if file.is_readable(resolved) then
if trace_locating then
report_libraries("! lib '%s' located via 'clibformat': '%s'",libname,resolved)
end
return package.loadlib(resolved,name)
end
end
end
for i=1,#clibpaths do -- package.path, might become option
local libpath = clibpaths[i]
local resolved = gsub(libpath,"?",simple)
if trace_locating then -- more detail
report_libraries("! checking for '%s' on 'package.cpath': '%s'",simple,libpath)
end
if file.is_readable(resolved) then
if trace_locating then
report_libraries("! lib '%s' located via 'package.cpath': '%s'",name,resolved)
end
return package.loadlib(resolved,name)
end
end
-- just in case the distribution is messed up
if trace_loading then -- more detail
report_libraries("! checking for '%s' using 'luatexlibs': '%s'",name)
end
local resolved = resolvers.findfile(file.basename(name),'luatexlibs') or ""
if resolved ~= "" then
if trace_locating then
report_libraries("! lib '%s' located by basename via environment: '%s'",name,resolved)
end
return loadfile(resolved)
end
if trace_locating then
report_libraries('? unable to locate lib: %s',name)
end
-- return "unable to locate " .. name
end
resolvers.loadlualib = require
-- -- -- --
package.obsolete = package.obsolete or { }
package.append_libpath = appendtolibpath -- will become obsolete
package.prepend_libpath = prependtolibpath -- will become obsolete
package.obsolete.append_libpath = appendtolibpath -- will become obsolete
package.obsolete.prepend_libpath = prependtolibpath -- will become obsolete
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