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if not modules then modules = { } end modules ['file-mod'] = {
version = 1.001,
comment = "companion to file-mod.mkvi",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- This module will be redone! For instance, the prefixes will move to data-*
-- as they arr sort of generic along with home:// etc/.
-- context is not defined yet! todo! (we need to load tupp-fil after cld)
-- todo: move startreadingfile to lua and push regime there
--[[ldx--
<p>It's more convenient to manipulate filenames (paths) in
<l n='lua'/> than in <l n='tex'/>. These methods have counterparts
at the <l n='tex'/> side.</p>
--ldx]]--
local format, find, concat, tonumber = string.format, string.find, table.concat, tonumber
local trace_modules = false trackers .register("modules.loading", function(v) trace_modules = v end)
local permit_unprefixed = false directives.register("modules.permitunprefixed", function(v) permit_unprefixed = v end)
local report_modules = logs.reporter("resolvers","modules")
local commands = commands
local context = context
local implement = interfaces.implement
local findbyscheme = resolvers.finders.byscheme -- use different one
local iterator = utilities.parsers.iterator
-- modules can have a specific suffix or can specify one
local prefixes = {
"m", -- module, extends functionality
"p", -- private code
"s", -- styles
"x", -- xml specific modules
-- "v", -- an old internal one for examples
"t", -- third party extensions
}
-- the order might change and how about cld
local suffixes = {
"mkvi", -- proprocessed mkiv files
"mkiv", -- mkiv files
"tex", -- normally source code files
"cld", -- context lua documents (often stand alone)
"lua", -- lua files
}
local modstatus = { }
local function usemodule(name,hasscheme)
local foundname
if hasscheme then
-- no auto suffix as http will return a home page or error page
-- so we only add one if missing
local fullname = file.addsuffix(name,"tex")
if trace_modules then
report_modules("checking url %a",fullname)
end
foundname = resolvers.findtexfile(fullname) or ""
elseif file.suffix(name) ~= "" then
if trace_modules then
report_modules("checking file %a",name)
end
foundname = findbyscheme("any",name) or ""
else
for i=1,#suffixes do
local fullname = file.addsuffix(name,suffixes[i])
if trace_modules then
report_modules("checking file %a",fullname)
end
foundname = findbyscheme("any",fullname) or ""
if foundname ~= "" then
break
end
end
end
if foundname ~= "" then
if trace_modules then
report_modules("loading file %a",foundname)
end
context.startreadingfile()
resolvers.jobs.usefile(foundname,true) -- once, notext
-- context.input(foundname)
context.stopreadingfile()
return true
else
return false
end
end
function environment.usemodules(prefix,askedname,truename)
local truename = truename or environment.truefilename(askedname)
local hasprefix = prefix and prefix ~= ""
local hashname = ((hasprefix and prefix) or "*") .. "-" .. truename
local status = modstatus[hashname] or false -- yet unset
if status == 0 then
-- not found
elseif status == 1 then
status = status + 1
else
if trace_modules then
report_modules("locating, prefix %a, askedname %a, truename %a",prefix,askedname,truename)
end
local hasscheme = url.hasscheme(truename)
if hasscheme then
-- no prefix and suffix done
if usemodule(truename,true) then
status = 1
else
status = 0
end
elseif hasprefix then
if usemodule(prefix .. "-" .. truename) then
status = 1
else
status = 0
end
else
for i=1,#prefixes do
-- todo: reconstruct name i.e. basename
local thename = prefixes[i] .. "-" .. truename
if usemodule(thename) then
status = 1
break
end
end
if status then
-- ok, don't change
elseif find(truename,"%-") and usemodule(truename) then
-- assume a user namespace
report_modules("using user prefixed file %a",truename)
status = 1
elseif permit_unprefixed and usemodule(truename) then
report_modules("using unprefixed file %a",truename)
status = 1
else
status = 0
end
end
end
if status == 0 then
report_modules("%a is not found",askedname)
elseif status == 1 then
report_modules("%a is loaded",trace_modules and truename or askedname)
else
report_modules("%a is already loaded",trace_modules and truename or askedname)
end
modstatus[hashname] = status
end
statistics.register("loaded tex modules", function()
if next(modstatus) then
local t, f, nt, nf = { }, { }, 0, 0
for k, v in table.sortedhash(modstatus) do
k = file.basename(k)
if v == 0 then
nf = nf + 1
f[nf] = k
else
nt = nt + 1
t[nt] = k
end
end
if nf == 0 then
return format("%s requested, all found (%s)",nt,concat(t," "))
elseif nt == 0 then
return format("%s requested, all missing (%s)",nf,concat(f," "))
else
return format("%s requested, %s found (%s), %s missing (%s)",nt+nf,nt,concat(t," "),nf,concat(f," "))
end
else
return nil
end
end)
-- moved from syst-lua.lua:
local lpegmatch = lpeg.match
local splitter = lpeg.tsplitter(lpeg.S(". "),tonumber)
function environment.comparedversion(one,two) -- one >= two
if not two or two == "" then
one, two = environment.version, one
elseif one == "" then
one = environment.version
end
one = lpegmatch(splitter,one)
two = lpegmatch(splitter,two)
one = (one[1] or 0) * 10000 + (one[2] or 0) * 100 + (one[3] or 0)
two = (two[1] or 0) * 10000 + (two[2] or 0) * 100 + (two[3] or 0)
if one < two then
return -1
elseif one > two then
return 1
else
return 0
end
end
environment.comparedversion = comparedversion
function environment.useluamodule(list)
for filename in iterator(list) do
environment.loadluafile(filename)
end
end
local strings = interfaces.strings
implement {
name = "usemodules",
actions = environment.usemodules,
arguments = strings[2]
}
implement {
name = "doifelseolderversion",
actions = function(one,two) commands.doifelse(comparedversion(one,two) >= 0) end,
arguments = strings[2]
}
implement {
name = "useluamodule",
actions = environment.useluamodule,
arguments = "string"
}
implement {
name = "loadluamodule",
actions = function(name) dofile(resolvers.findctxfile(name)) end, -- hack
arguments = "string"
}
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