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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 gsub = string.gsub
local unpack = unpack or table.unpack
local libformats = { 'luatexlibs', 'tex', 'texmfscripts', 'othertextfiles' } -- 'luainputs'
local clibformats = { 'lib' }
local libpaths = file.split_path(package.path)
local clibpaths = file.split_path(package.cpath)
local function thepath(...)
local t = { ... } t[#t+1] = "?.lua"
local path = file.join(unpack(t))
if trace_locating then
logs.report("fileio","! appending '%s' to 'package.path'",path)
end
return path
end
function package.append_libpath(...)
table.insert(libpaths,thepath(...))
end
function package.prepend_libpath(...)
table.insert(libpaths,1,thepath(...))
end
-- beware, we need to return a loadfile result !
package.loaders[2] = function(name) -- was [#package.loaders+1]
if trace_locating then -- mode detail
logs.report("fileio","! locating '%s'",name)
end
for i=1,#libformats do
local format = libformats[i]
local resolved = resolvers.find_file(name,format) or ""
if trace_locating then -- mode detail
logs.report("fileio","! checking for '%s' using 'libformat path': '%s'",name,format)
end
if resolved ~= "" then
if trace_locating then
logs.report("fileio","! lib '%s' located via environment: '%s'",name,resolved)
end
return loadfile(resolved)
end
end
local simple = gsub(name,"%.lua$","")
local simple = gsub(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
logs.report("fileio","! checking for '%s' on 'package.path': '%s'",simple,libpath)
end
if resolvers.isreadable.file(resolved) then
if trace_locating then
logs.report("fileio","! lib '%s' located via 'package.path': '%s'",name,resolved)
end
return loadfile(resolved)
end
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.expanded_path_list_from_var(format)
for p=1,#paths do
local path = paths[p]
local resolved = file.join(path,libname)
if trace_locating then -- mode detail
logs.report("fileio","! checking for '%s' using 'clibformat path': '%s'",libname,path)
end
if resolvers.isreadable.file(resolved) then
if trace_locating then
logs.report("fileio","! 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
logs.report("fileio","! checking for '%s' on 'package.cpath': '%s'",simple,libpath)
end
if resolvers.isreadable.file(resolved) then
if trace_locating then
logs.report("fileio","! 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
logs.report("fileio","! checking for '%s' using 'luatexlibs': '%s'",name)
end
local resolved = resolvers.find_file(file.basename(name),'luatexlibs') or ""
if resolved ~= "" then
if trace_locating then
logs.report("fileio","! lib '%s' located by basename via environment: '%s'",name,resolved)
end
return loadfile(resolved)
end
if trace_locating then
logs.report("fileio",'? unable to locate lib: %s',name)
end
-- return "unable to locate " .. name
end
resolvers.loadlualib = require
|
