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Diffstat (limited to 'luaotfload-fonts.lua')
| -rw-r--r-- | luaotfload-fonts.lua | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/luaotfload-fonts.lua b/luaotfload-fonts.lua deleted file mode 100644 index 96f3501..0000000 --- a/luaotfload-fonts.lua +++ /dev/null @@ -1,253 +0,0 @@ -if not modules then modules = { } end modules ['luatex-fonts'] = { - version = 1.001, - comment = "companion to luatex-fonts.tex", - author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", - copyright = "PRAGMA ADE / ConTeXt Development Team", - license = "see context related readme files" -} - --- The following code isolates the generic context code from already defined or to be defined --- namespaces. This is the reference loader for plain, but the generic code is also used in --- luaotfload (which is is a file meant for latex) and that used to be maintained by Khaled --- Hosny. We do our best to keep the interface as clean as possible. --- --- The code base is rather stable now, especially if you stay away from the non generic code. All --- relevant data is organized in tables within the main table of a font instance. There are a few --- places where in context other code is plugged in, but this does not affect the core code. Users --- can (given that their macro package provides this option) access the font data (characters, --- descriptions, properties, parameters, etc) of this main table. --- --- Future versions will probably have some more specific context code removed, like tracing and --- obscure hooks, so that we have a more efficient version (and less files too). So, don't depend --- too much on low level code that is meant for context as it can change without notice. - -utf = utf or unicode.utf8 - --- We have some (global) hooks (for latex): - -if not non_generic_context then - non_generic_context = { } -end - -if not non_generic_context.luatex_fonts then - non_generic_context.luatex_fonts = { - -- load_before = nil, - -- load_after = nil, - -- skip_loading = nil, - } -end - -if not generic_context then - generic_context = { } -end - -if not generic_context.push_namespaces then - - function generic_context.push_namespaces() - texio.write(" <push namespace>") - local normalglobal = { } - for k, v in next, _G do - normalglobal[k] = v - end - return normalglobal - end - - function generic_context.pop_namespaces(normalglobal,isolate) - if normalglobal then - texio.write(" <pop namespace>") - for k, v in next, _G do - if not normalglobal[k] then - generic_context[k] = v - if isolate then - _G[k] = nil - end - end - end - for k, v in next, normalglobal do - _G[k] = v - end - -- just to be sure: - setmetatable(generic_context,_G) - else - texio.write(" <fatal error: invalid pop of generic_context>") - os.exit() - end - end - -end - -local whatever = generic_context.push_namespaces() - --- We keep track of load time by storing the current time. That way we cannot be accused --- of slowing down loading too much. Anyhow, there is no reason for this library to perform --- slower in any other package as it does in context. --- --- Please don't update to this version without proper testing. It might be that this version --- lags behind stock context and the only formal release takes place around tex live code --- freeze. - -local starttime = os.gettimeofday() - --- As we don't use the context file searching, we need to initialize the kpse library. As the --- progname can be anything we will temporary switch to the context namespace if needed. Just --- adding the context paths to the path specification is somewhat faster. --- --- Now, with lua 5.2 being used we might create a special ENV for this. - --- kpse.set_program_name("luatex") - -local ctxkpse = nil -local verbose = true - -local function loadmodule(name,continue) - local foundname = kpse.find_file(name,"tex") or "" - if not foundname then - if not ctxkpse then - ctxkpse = kpse.new("luatex","context") - end - foundname = ctxkpse:find_file(name,"tex") or "" - end - if foundname == "" then - if not continue then - texio.write_nl(string.format(" <luatex-fonts: unable to locate %s>",name)) - os.exit() - end - else - if verbose then - texio.write(string.format(" <%s>",foundname)) -- no file.basename yet - end - dofile(foundname) - end -end - -if non_generic_context.luatex_fonts.load_before then - loadmodule(non_generic_context.luatex_fonts.load_before,true) -end - -if non_generic_context.luatex_fonts.skip_loading ~= true then - - loadmodule('luatex-fonts-merged.lua',true) - - if fonts then - - if not fonts._merge_loaded_message_done_ then - texio.write_nl("log", "!") - texio.write_nl("log", "! I am using the merged version of 'luatex-fonts.lua' here. If") - texio.write_nl("log", "! you run into problems or experience unexpected behaviour, and") - texio.write_nl("log", "! if you have ConTeXt installed you can try to delete the file") - texio.write_nl("log", "! 'luatex-font-merged.lua' as I might then use the possibly") - texio.write_nl("log", "! updated libraries. The merged version is not supported as it") - texio.write_nl("log", "! is a frozen instance. Problems can be reported to the ConTeXt") - texio.write_nl("log", "! mailing list.") - texio.write_nl("log", "!") - end - - fonts._merge_loaded_message_done_ = true - - else - - -- The following helpers are a bit overkill but I don't want to mess up context code for the - -- sake of general generality. Around version 1.0 there will be an official api defined. - -- - -- So, I will strip these libraries and see what is really needed so that we don't have this - -- overhead in the generic modules. The next section is only there for the packager, so stick - -- to using luatex-fonts with luatex-fonts-merged.lua and forget about the rest. The following - -- list might change without prior notice (for instance because we shuffled code around). - - loadmodule("l-lua.lua") - loadmodule("l-lpeg.lua") - loadmodule("l-function.lua") - loadmodule("l-string.lua") - loadmodule("l-table.lua") - loadmodule("l-io.lua") - loadmodule("l-file.lua") - loadmodule("l-boolean.lua") - loadmodule("l-math.lua") - loadmodule("util-str.lua") - - -- The following modules contain code that is either not used at all outside context or will fail - -- when enabled due to lack of other modules. - - -- First we load a few helper modules. This is about the miminum needed to let the font modules do - -- their work. Don't depend on their functions as we might strip them in future versions of his - -- generic variant. - - loadmodule('luatex-basics-gen.lua') - loadmodule('data-con.lua') - - -- We do need some basic node support. The code in there is not for general use as it might change. - - loadmodule('luatex-basics-nod.lua') - - -- Now come the font modules that deal with traditional tex fonts as well as open type fonts. We only - -- support OpenType fonts here. - -- - -- The font database file (if used at all) must be put someplace visible for kpse and is not shared - -- with context. The mtx-fonts script can be used to genate this file (using the --names option). - - -- in 2013/14 we will merge/move some generic files into luatex-fonts-* files (copies) so that - -- intermediate updates of context not interfere; we can then also use the general merger - - loadmodule('font-ini.lua') - loadmodule('font-con.lua') - loadmodule('luatex-fonts-enc.lua') -- will load font-age on demand - loadmodule('font-cid.lua') - loadmodule('font-map.lua') -- for loading lum file (will be stripped) - loadmodule('luatex-fonts-syn.lua') -- deals with font names (synonyms) - loadmodule('luatex-fonts-tfm.lua') - loadmodule('font-oti.lua') - loadmodule('font-otf.lua') - loadmodule('font-otb.lua') - loadmodule('node-inj.lua') -- will be replaced (luatex >= .70) - loadmodule('font-ota.lua') - loadmodule('font-otn.lua') - ----------('luatex-fonts-chr.lua') - loadmodule('luatex-fonts-lua.lua') - loadmodule('font-def.lua') - loadmodule('luatex-fonts-def.lua') - loadmodule('luatex-fonts-ext.lua') -- some extensions - - -- We need to plug into a callback and the following module implements the handlers. Actual plugging - -- in happens later. - - loadmodule('luatex-fonts-cbk.lua') - - end - -end - -if non_generic_context.luatex_fonts.load_after then - loadmodule(non_generic_context.luatex_fonts.load_after,true) -end - -resolvers.loadmodule = loadmodule - --- In order to deal with the fonts we need to initialize some callbacks. One can overload them later on if --- needed. First a bit of abstraction. - -generic_context.callback_ligaturing = false -generic_context.callback_kerning = false -generic_context.callback_pre_linebreak_filter = nodes.simple_font_handler -generic_context.callback_hpack_filter = nodes.simple_font_handler -generic_context.callback_define_font = fonts.definers.read - --- The next ones can be done at a different moment if needed. You can create a generic_context namespace --- and set no_callbacks_yet to true, load this module, and enable the callbacks later. So, there is really --- *no* need to create a alternative for luatex-fonts.lua and luatex-fonts-merged.lua: just load this one --- and overload if needed. - -if not generic_context.no_callbacks_yet then - - callback.register('ligaturing', generic_context.callback_ligaturing) - callback.register('kerning', generic_context.callback_kerning) - callback.register('pre_linebreak_filter', generic_context.callback_pre_linebreak_filter) - callback.register('hpack_filter', generic_context.callback_hpack_filter) - callback.register('define_font' , generic_context.callback_define_font) - -end - --- We're done. - -texio.write(string.format(" <luatex-fonts.lua loaded in %0.3f seconds>", os.gettimeofday()-starttime)) - -generic_context.pop_namespaces(whatever) |