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Diffstat (limited to 'luaotfload-basics-gen.lua')
-rw-r--r-- | luaotfload-basics-gen.lua | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/luaotfload-basics-gen.lua b/luaotfload-basics-gen.lua new file mode 100644 index 0000000..727086e --- /dev/null +++ b/luaotfload-basics-gen.lua @@ -0,0 +1,296 @@ +if not modules then modules = { } end modules ['luat-basics-gen'] = { + version = 1.100, + comment = "companion to luatex-*.tex", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +if context then + texio.write_nl("fatal error: this module is not for context") + os.exit() +end + +local dummyfunction = function() end +----- dummyreporter = function(c) return function(...) texio.write_nl(c .. " : " .. string.format(...)) end end +local dummyreporter = function(c) return function(...) texio.write_nl(c .. " : " .. string.formatters(...)) end end + +statistics = { + register = dummyfunction, + starttiming = dummyfunction, + stoptiming = dummyfunction, + elapsedtime = nil, +} + +directives = { + register = dummyfunction, + enable = dummyfunction, + disable = dummyfunction, +} + +trackers = { + register = dummyfunction, + enable = dummyfunction, + disable = dummyfunction, +} + +experiments = { + register = dummyfunction, + enable = dummyfunction, + disable = dummyfunction, +} + +storage = { -- probably no longer needed + register = dummyfunction, + shared = { }, +} + +logs = { + new = dummyreporter, + reporter = dummyreporter, + messenger = dummyreporter, + report = dummyfunction, +} + +callbacks = { + register = function(n,f) return callback.register(n,f) end, + +} + +utilities = { + storage = { + allocate = function(t) return t or { } end, + mark = function(t) return t or { } end, + }, +} + +characters = characters or { + data = { } +} + +-- we need to cheat a bit here + +texconfig.kpse_init = true + +resolvers = resolvers or { } -- no fancy file helpers used + +local remapper = { + otf = "opentype fonts", + ttf = "truetype fonts", + ttc = "truetype fonts", + dfont = "truetype fonts", -- "truetype dictionary", + cid = "cid maps", + cidmap = "cid maps", + fea = "font feature files", + pfa = "type1 fonts", -- this is for Khaled, in ConTeXt we don't use this! + pfb = "type1 fonts", -- this is for Khaled, in ConTeXt we don't use this! +} + +function resolvers.findfile(name,fileformat) + name = string.gsub(name,"\\","/") + if not fileformat or fileformat == "" then + fileformat = file.suffix(name) + if fileformat == "" then + fileformat = "tex" + end + end + fileformat = string.lower(fileformat) + fileformat = remapper[fileformat] or fileformat + local found = kpse.find_file(name,fileformat) + if not found or found == "" then + found = kpse.find_file(name,"other text files") + end + return found +end + +-- function resolvers.findbinfile(name,fileformat) +-- if not fileformat or fileformat == "" then +-- fileformat = file.suffix(name) +-- end +-- return resolvers.findfile(name,(fileformat and remapper[fileformat]) or fileformat) +-- end + +resolvers.findbinfile = resolvers.findfile + +function resolvers.resolve(s) + return s +end + +function resolvers.unresolve(s) + return s +end + +-- Caches ... I will make a real stupid version some day when I'm in the +-- mood. After all, the generic code does not need the more advanced +-- ConTeXt features. Cached data is not shared between ConTeXt and other +-- usage as I don't want any dependency at all. Also, ConTeXt might have +-- different needs and tricks added. + +--~ containers.usecache = true + +caches = { } + +local writable, readables = nil, { } + +if not caches.namespace or caches.namespace == "" or caches.namespace == "context" then + caches.namespace = 'generic' +end + +do + + local cachepaths = kpse.expand_path('$TEXMFCACHE') or "" + + if cachepaths == "" then + cachepaths = kpse.expand_path('$TEXMFVAR') + end + + if cachepaths == "" then + cachepaths = kpse.expand_path('$VARTEXMF') + end + + if cachepaths == "" then + cachepaths = "." + end + + cachepaths = string.split(cachepaths,os.type == "windows" and ";" or ":") + + for i=1,#cachepaths do + if file.is_writable(cachepaths[i]) then + writable = file.join(cachepaths[i],"luatex-cache") + lfs.mkdir(writable) + writable = file.join(writable,caches.namespace) + lfs.mkdir(writable) + break + end + end + + for i=1,#cachepaths do + if file.is_readable(cachepaths[i]) then + readables[#readables+1] = file.join(cachepaths[i],"luatex-cache",caches.namespace) + end + end + + if not writable then + texio.write_nl("quiting: fix your writable cache path") + os.exit() + elseif #readables == 0 then + texio.write_nl("quiting: fix your readable cache path") + os.exit() + elseif #readables == 1 and readables[1] == writable then + texio.write(string.format("(using cache: %s)",writable)) + else + texio.write(string.format("(using write cache: %s)",writable)) + texio.write(string.format("(using read cache: %s)",table.concat(readables, " "))) + end + +end + +function caches.getwritablepath(category,subcategory) + local path = file.join(writable,category) + lfs.mkdir(path) + path = file.join(path,subcategory) + lfs.mkdir(path) + return path +end + +function caches.getreadablepaths(category,subcategory) + local t = { } + for i=1,#readables do + t[i] = file.join(readables[i],category,subcategory) + end + return t +end + +local function makefullname(path,name) + if path and path ~= "" then + name = "temp-" .. name -- clash prevention + return file.addsuffix(file.join(path,name),"lua"), file.addsuffix(file.join(path,name),"luc") + end +end + +function caches.is_writable(path,name) + local fullname = makefullname(path,name) + return fullname and file.is_writable(fullname) +end + +function caches.loaddata(paths,name) + for i=1,#paths do + local data = false + local luaname, lucname = makefullname(paths[i],name) + if lucname and lfs.isfile(lucname) then -- maybe also check for size + texio.write(string.format("(load luc: %s)",lucname)) + data = loadfile(lucname) + if data then + data = data() + end + if data then + return data + else + texio.write(string.format("(loading failed: %s)",lucname)) + end + end + if luaname and lfs.isfile(luaname) then + texio.write(string.format("(load lua: %s)",luaname)) + data = loadfile(luaname) + if data then + data = data() + end + if data then + return data + end + end + end +end + +function caches.savedata(path,name,data) + local luaname, lucname = makefullname(path,name) + if luaname then + texio.write(string.format("(save: %s)",luaname)) + table.tofile(luaname,data,true,{ reduce = true }) + if lucname and type(caches.compile) == "function" then + os.remove(lucname) -- better be safe + texio.write(string.format("(save: %s)",lucname)) + caches.compile(data,luaname,lucname) + end + end +end + +-- According to KH os.execute is not permitted in plain/latex so there is +-- no reason to use the normal context way. So the method here is slightly +-- different from the one we have in context. We also use different suffixes +-- as we don't want any clashes (sharing cache files is not that handy as +-- context moves on faster.) +-- +-- Beware: serialization might fail on large files (so maybe we should pcall +-- this) in which case one should limit the method to luac and enable support +-- for execution. + +caches.compilemethod = "both" + +function caches.compile(data,luaname,lucname) + local done = false + if caches.compilemethod == "luac" or caches.compilemethod == "both" then + done = os.spawn("texluac -o " .. string.quoted(lucname) .. " -s " .. string.quoted(luaname)) == 0 + end + if not done and (caches.compilemethod == "dump" or caches.compilemethod == "both") then + local d = io.loaddata(luaname) + if not d or d == "" then + d = table.serialize(data,true) -- slow + end + if d and d ~= "" then + local f = io.open(lucname,'w') + if f then + local s + if _G["loadstring"] then s=loadstring(d) else s=load(d) end + f:write(string.dump(s)) + f:close() + end + end + end +end + +-- + +function table.setmetatableindex(t,f) + setmetatable(t,{ __index = f }) +end |