font-lua.lua /size: 1449 b    last modification: 2020-07-01 14:35
1if not modules then modules = { } end modules ['font-lua'] = {
2    version   = 1.001,
3    comment   = "companion to font-ini.mkiv",
4    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
5    copyright = "PRAGMA ADE / ConTeXt Development Team",
6    license   = "see context related readme files"
7}
8
9local trace_defining = false  trackers.register("fonts.defining", function(v) trace_defining = v end)
10
11local report_lua     = logs.reporter("fonts","lua loading")
12
13local fonts          = fonts
14local readers        = fonts.readers
15fonts.formats.lua    = "lua"
16
17-- we could add support for features here
18
19local function check_lua(specification,fullname)
20    -- standard tex file lookup
21    local fullname = resolvers.findfile(fullname) or ""
22    if fullname ~= "" then
23        local loader = loadfile(fullname)
24        loader = loader and loader()
25        return loader and loader(specification)
26    end
27end
28
29readers.check_lua = check_lua
30
31function readers.lua(specification)
32    local original = specification.specification
33    if trace_defining then
34        report_lua("using lua reader for %a",original)
35    end
36    local fullname = specification.filename or ""
37    if fullname == "" then
38        local forced = specification.forced or ""
39        if forced ~= "" then
40            fullname = specification.name .. "." .. forced
41        else
42            fullname = specification.name
43        end
44    end
45    return check_lua(specification,fullname)
46end
47