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if not modules then modules = { } end modules ['font-off'] = {
version = 1.001,
comment = "companion to font-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local tonumber = tonumber
local lower = string.lower
local round = math.round
local setmetatableindex = table.setmetatableindex
local fontloader = fontloader
----- font_to_table = fontloader.to_table
local open_font = fontloader.open
----- get_font_info = fontloader.info
local close_font = fontloader.close
----- font_fields = fontloader.fields
-- table={
-- ["familyname"]="TeXGyrePagella",
-- ["fontname"]="TeXGyrePagella-Regular",
-- ["fullname"]="TeXGyrePagella-Regular",
-- ["italicangle"]=0,
-- ["names"]={
-- {
-- ["lang"]="English (US)",
-- ["names"]={
-- ["copyright"]="Copyright 2006, 2009 for TeX Gyre extensions by B. Jackowski and J.M. Nowacki (on behalf of TeX users groups). This work is released under the GUST Font License -- see http://tug.org/fonts/licenses/GUST-FONT-LICENSE.txt for details.",
-- ["family"]="TeXGyrePagella",
-- ["fullname"]="TeXGyrePagella-Regular",
-- ["postscriptname"]="TeXGyrePagella-Regular",
-- ["preffamilyname"]="TeX Gyre Pagella",
-- ["subfamily"]="Regular",
-- ["trademark"]="Please refer to the Copyright section for the font trademark attribution notices.",
-- ["uniqueid"]="2.004;UKWN;TeXGyrePagella-Regular",
-- ["version"]="Version 2.004;PS 2.004;hotconv 1.0.49;makeotf.lib2.0.14853",
-- },
-- },
-- },
-- ["pfminfo"]={
-- ["avgwidth"]=528,
-- ["codepages"]={ 536871315, 0 },
-- ["firstchar"]=32,
-- ["fstype"]=12,
-- ["hhead_ascent"]=1098,
-- ["hhead_descent"]=-283,
-- ["hheadascent_add"]=0,
-- ["hheaddescent_add"]=0,
-- ["hheadset"]=1,
-- ["lastchar"]=64260,
-- ["linegap"]=0,
-- ["os2_breakchar"]=32,
-- ["os2_capheight"]=692,
-- ["os2_defaultchar"]=0,
-- ["os2_family_class"]=0,
-- ["os2_strikeypos"]=269,
-- ["os2_strikeysize"]=50,
-- ["os2_subxoff"]=0,
-- ["os2_subxsize"]=650,
-- ["os2_subyoff"]=75,
-- ["os2_subysize"]=600,
-- ["os2_supxoff"]=0,
-- ["os2_supxsize"]=650,
-- ["os2_supyoff"]=350,
-- ["os2_supysize"]=600,
-- ["os2_typoascent"]=726,
-- ["os2_typodescent"]=-274,
-- ["os2_typolinegap"]=200,
-- ["os2_vendor"]="UKWN",
-- ["os2_winascent"]=1098,
-- ["os2_windescent"]=283,
-- ["os2_xheight"]=449,
-- ["panose"]={
-- ["armstyle"]="Any",
-- ["contrast"]="Any",
-- ["familytype"]="Any",
-- ["letterform"]="Any",
-- ["midline"]="Any",
-- ["proportion"]="Any",
-- ["serifstyle"]="Any",
-- ["strokevariation"]="Any",
-- ["weight"]="Book",
-- ["xheight"]="Any",
-- },
-- ["panose_set"]=1,
-- ["pfmfamily"]=81,
-- ["pfmset"]=1,
-- ["subsuper_set"]=1,
-- ["typoascent_add"]=0,
-- ["typodescent_add"]=0,
-- ["unicoderanges"]={ 536871047, 0, 0, 0 },
-- ["vheadset"]=0,
-- ["vlinegap"]=0,
-- ["weight"]=400,
-- ["width"]=5,
-- ["winascent_add"]=0,
-- ["windescent_add"]=0,
-- },
-- ["units_per_em"]=1000,
-- ["version"]="2.004;PS 2.004;hotconv 1.0.49;makeotf.lib2.0.14853",
-- ["weight"]="Book",
-- }
-- We had this as temporary solution because we needed a bit more info but in the
-- meantime it got an interesting side effect: currently luatex delays loading of e.g.
-- glyphs so here we first load and then discard which is a waste. In the past it did
-- free memory because a full load was done. One of these things that goes unnoticed.
--
-- local function get_full_info(...) -- check with taco what we get / could get
-- local ff = open_font(...)
-- if ff then
-- local d = ff -- and font_to_table(ff)
-- d.glyphs, d.subfonts, d.gpos, d.gsub, d.lookups = nil, nil, nil, nil, nil
-- close_font(ff)
-- return d
-- else
-- return nil, "error in loading font"
-- end
-- end
-- Phillip suggested this faster variant but it's still a hack as fontloader.info should
-- return these keys/values (and maybe some more) but at least we close the loader which
-- might save some memory in the end.
-- local function get_full_info(name)
-- local ff = open_font(name)
-- if ff then
-- local fields = table.tohash(font_fields(ff),true) -- isn't that one stable
-- local d = {
-- names = fields.names and ff.names,
-- familyname = fields.familyname and ff.familyname,
-- fullname = fields.fullname and ff.fullname,
-- fontname = fields.fontname and ff.fontname,
-- weight = fields.weight and ff.weight,
-- italicangle = fields.italicangle and ff.italicangle,
-- units = fields.units_per_em and ff.units_per_em,
-- designsize = fields.design_size and ff.design_size,
-- minsize = fields.design_range_bottom and ff.design_range_bottom,
-- maxsize = fields.design_range_top and ff.design_range_top,
-- italicangle = fields.italicangle and ff.italicangle,
-- pfmweight = pfminfo and pfminfo.weight or 400,
-- pfmwidth = pfminfo and pfminfo.width or 5,
-- }
-- -- setmetatableindex(d,function(t,k)
-- -- report_names("warning, trying to access field %a in font table of %a",k,name)
-- -- end)
-- close_font(ff)
-- return d
-- else
-- return nil, "error in loading font"
-- end
-- end
-- more efficient:
local fields = nil
local function check_names(names)
if names then
for i=1,#names do
local name = names[i]
if lower(name.lang) == "english (us)" then -- lower added
return name.names
end
end
end
end
local function get_full_info(name)
local ff = open_font(name)
if ff then
-- unfortunately luatex aborts when a field is not available but we just make
-- sure that we only access a few known ones
local pfminfo = ff.pfminfo or { }
local names = check_names(ff.names) or { }
local weight = names.weight or ff.weight
local width = names.width -- no: ff.width
local d = {
fontname = ff.fontname,
fullname = names.fullname or ff.fullname,
family = names.family,
subfamily = names.subfamily,
familyname = names.preffamilyname or names.family or ff.familyname,
subfamilyname = names.prefmodifiers or names.subfamily,
weight = weight and lower(weight),
width = width and lower(width),
italicangle = round(1000*(tonumber(ff.italicangle) or 0))/1000 or 0,
units = ff.units_per_em,
designsize = ff.design_size,
minsize = ff.design_range_bottom,
maxsize = ff.design_range_top,
pfmweight = pfminfo.weight or 400,
pfmwidth = pfminfo.width or 5,
monospaced = pfminfo.panose and pfminfo.panose.proportion == "Monospaced",
}
close_font(ff)
return d
else
return nil, "error in loading font"
end
end
-- As we have lazy loading anyway, this one still is full and with less code than
-- the previous one. But this depends on the garbage collector to kick in and in the
-- current version that somehow happens not that often (on my machine I end up with
-- some 3 GB extra before that happens).
-- local function get_full_info(...)
-- local ff = open_font(...)
-- if ff then
-- local d = { } -- ff is userdata so [1] or # fails on it
-- setmetatableindex(d,ff)
-- return d -- garbage collection will do the close_font(ff)
-- else
-- return nil, "error in loading font"
-- end
-- end
fonts = fonts or { }
local handlers = fonts.handlers or { }
fonts.handlers = handlers
local otf = handlers.otf or { }
handlers.otf = otf
local readers = otf.readers or { }
otf.readers = readers
fontloader.fullinfo = get_full_info
readers.getinfo = readers.getinfo or get_full_info
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