diff options
| -rwxr-xr-x | scripts/mkcharacters | 102 |
1 files changed, 83 insertions, 19 deletions
diff --git a/scripts/mkcharacters b/scripts/mkcharacters index 59582f2..a31c19c 100755 --- a/scripts/mkcharacters +++ b/scripts/mkcharacters @@ -4,16 +4,17 @@ -- USAGE: ./mkcharacters.lua -- DESCRIPTION: import parts of char-def.lua -- REQUIREMENTS: lua, ConTeXt, the lualibs package --- AUTHOR: Philipp Gesang (Phg), <phg42.2a@gmail.com> +-- AUTHOR: Philipp Gesang (Phg), <phg@phi-gamma.net> ----------------------------------------------------------------------- --- we create a stripped-down version of char-def.lua +-- We create a stripped-down version of char-def.lua, suitable for use +-- with the generic font loader. ----------------------------------------------------------------------- ----------------------------------------------------------------------- -- config ----------------------------------------------------------------------- -local charfile = "./build/luaotfload-characters.lua" -local chardef = arg[1] +local mkivpath = arg[1] +local charfile = arg[2] or "./build/luaotfload-characters.lua" --- for every code point char-def.lua provides a set of fields. they --- are: @@ -54,29 +55,36 @@ local import = { kpse.set_program_name"luatex" -for _, lib in next, { "lualibs-lua.lua", - "lualibs-lpeg.lua", - "lualibs-table.lua", } do - local found = assert(kpse.find_file(lib, "lua"), - "Could not locate " .. lib .. ".\n" - .. "Please install the lualibs package.") - require(found) -end +require "lualibs" + +local chardef +local charini -if not chardef then - chardef = kpse.expand_path("~/context/tex/texmf-context/tex/context/base/") - .. "/char-def.lua" +if not mkivpath then + mkivpath = assert (kpse.expand_path + "~/context/tex/texmf-context/tex/context/base/mkiv/", + "Failed to locate ConTeXt.") end +chardef = mkivpath .. "/char-def.lua" +charini = mkivpath .. "/char-ini.lua" + +--- we could grab the files from contextgarden but as Context is part +--- of TL it’s not worth bothering if not (chardef and lfs.isfile(chardef)) then - --- we could grab the file from contextgarden but as Context is part - --- of TL it’s not worth bothering chardef = assert(kpse.find_file("char-def.lua", "lua"), - "Could not find ConTeXt.") + "Failed to locate file char-def.lua from ConTeXt.") +end + +if not (charini and lfs.isfile(charini)) then + charini = assert(kpse.find_file("char-ini.lua", "lua"), + "Failed to locate file char-ini.lua from ConTeXt.") end io.write(string.format("extracting data from char-def.lua at %s\n", chardef)) +io.write(string.format("loading code from char-ini.lua at %s\n", + charini)) ----------------------------------------------------------------------- -- functionality @@ -127,6 +135,60 @@ local extract_fields = function (data) return extract_fields_indeed(data, {}, nil) end +--[[ extract_classifiers : from luatex-basics-prepare.tex ]] + +local extract_classifiers = function (chardata) + dofile (charini) + local s_init = 1 local s_rphf = 7 + local s_medi = 2 local s_half = 8 + local s_fina = 3 local s_pref = 9 + local s_isol = 4 local s_blwf = 10 + local s_mark = 5 local s_pstf = 11 + local s_rest = 6 + + local mappers = { + l = s_init, -- left + d = s_medi, -- double + c = s_medi, -- joiner + r = s_fina, -- right + u = s_isol, -- nonjoiner + } + + local first_arabic, last_arabic = characters.blockrange("arabic") + local first_syriac, last_syriac = characters.blockrange("syriac") + local first_mandiac, last_mandiac = characters.blockrange("mandiac") + local first_nko, last_nko = characters.blockrange("nko") + + local classifiers = { } + + for k, c in next, chardata do + if k > 0 then + local c = chardata[k] + if c then + local arabic = c.arabic + if arabic then + classifiers[k] = mappers[arabic] + elseif k >= first_arabic and k <= last_arabic or k >= first_syriac and k <= last_syriac or + k >= first_mandiac and k <= last_mandiac or k >= first_nko and k <= last_nko then + if c.category == "mn" then + classifiers[k] = s_mark + else + classifiers[k] = s_rest + end + end + end + end + end + return classifiers + end + +local amend_table_fields = function (data, classifiers) + --- installed by luatex-basics-prepare.tex + data.characters = { } + data.classifiers = classifiers + return data +end + local writedata = function (data) local outchan = io.open(charfile, "w") if not outchan then @@ -140,8 +202,10 @@ end do local chardata = get_characters() + local classifiers = extract_classifiers(chardata) local stripped = extract_fields(chardata) - local serialized = table.serialize(stripped, true, { + local amended = amend_table_fields(stripped, classifiers) + local serialized = table.serialize(amended, true, { compact = true, noquotes = true, hexify = true, --- for consistency with char-def |