/usr/share/texlive/texmf-dist/tex/luatex/luaotfload/otfl-font-cid.lua is in texlive-luatex 2012.20120611-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | if not modules then modules = { } end modules ['font-cid'] = {
version = 1.001,
comment = "companion to font-otf.lua (cidmaps)",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local format, match, lower = string.format, string.match, string.lower
local tonumber = tonumber
local lpegmatch = lpeg.match
local trace_loading = false trackers.register("otf.loading", function(v) trace_loading = v end)
fonts = fonts or { }
fonts.cid = fonts.cid or { }
fonts.cid.map = fonts.cid.map or { }
fonts.cid.max = fonts.cid.max or 10
-- original string parser: 0.109, lpeg parser: 0.036 seconds for Adobe-CNS1-4.cidmap
--
-- 18964 18964 (leader)
-- 0 /.notdef
-- 1..95 0020
-- 99 3000
local number = lpeg.C(lpeg.R("09","af","AF")^1)
local space = lpeg.S(" \n\r\t")
local spaces = space^0
local period = lpeg.P(".")
local periods = period * period
local name = lpeg.P("/") * lpeg.C((1-space)^1)
local unicodes, names = { }, { }
local function do_one(a,b)
unicodes[tonumber(a)] = tonumber(b,16)
end
local function do_range(a,b,c)
c = tonumber(c,16)
for i=tonumber(a),tonumber(b) do
unicodes[i] = c
c = c + 1
end
end
local function do_name(a,b)
names[tonumber(a)] = b
end
local grammar = lpeg.P { "start",
start = number * spaces * number * lpeg.V("series"),
series = (spaces * (lpeg.V("one") + lpeg.V("range") + lpeg.V("named")) )^1,
one = (number * spaces * number) / do_one,
range = (number * periods * number * spaces * number) / do_range,
named = (number * spaces * name) / do_name
}
function fonts.cid.load(filename)
local data = io.loaddata(filename)
if data then
unicodes, names = { }, { }
lpegmatch(grammar,data)
local supplement, registry, ordering = match(filename,"^(.-)%-(.-)%-()%.(.-)$")
return {
supplement = supplement,
registry = registry,
ordering = ordering,
filename = filename,
unicodes = unicodes,
names = names
}
else
return nil
end
end
local template = "%s-%s-%s.cidmap"
local function locate(registry,ordering,supplement)
local filename = format(template,registry,ordering,supplement)
local hashname = lower(filename)
local cidmap = fonts.cid.map[hashname]
if not cidmap then
if trace_loading then
logs.report("load otf","checking cidmap, registry: %s, ordering: %s, supplement: %s, filename: %s",registry,ordering,supplement,filename)
end
local fullname = resolvers.find_file(filename,'cid') or ""
if fullname ~= "" then
cidmap = fonts.cid.load(fullname)
if cidmap then
if trace_loading then
logs.report("load otf","using cidmap file %s",filename)
end
fonts.cid.map[hashname] = cidmap
cidmap.usedname = file.basename(filename)
return cidmap
end
end
end
return cidmap
end
function fonts.cid.getmap(registry,ordering,supplement)
-- cf Arthur R. we can safely scan upwards since cids are downward compatible
local supplement = tonumber(supplement)
if trace_loading then
logs.report("load otf","needed cidmap, registry: %s, ordering: %s, supplement: %s",registry,ordering,supplement)
end
local cidmap = locate(registry,ordering,supplement)
if not cidmap then
local cidnum = nil
-- next highest (alternatively we could start high)
if supplement < fonts.cid.max then
for supplement=supplement+1,fonts.cid.max do
local c = locate(registry,ordering,supplement)
if c then
cidmap, cidnum = c, supplement
break
end
end
end
-- next lowest (least worse fit)
if not cidmap and supplement > 0 then
for supplement=supplement-1,0,-1 do
local c = locate(registry,ordering,supplement)
if c then
cidmap, cidnum = c, supplement
break
end
end
end
-- prevent further lookups
if cidmap and cidnum > 0 then
for s=0,cidnum-1 do
filename = format(template,registry,ordering,s)
if not fonts.cid.map[filename] then
fonts.cid.map[filename] = cidmap -- copy of ref
end
end
end
end
return cidmap
end
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