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Fix TTF component subsetting

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This commit is contained in:
Marcel Krüger 2020-07-13 22:02:36 +02:00
parent 5427ac4ab8
commit 087bbc013d
1 changed files with 5 additions and 5 deletions
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10
luametalatex-pdf-font-ttf.lua
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@ -9,19 +9,19 @@ local function round(x)
end end
end end
local function addglyph(glyph, usedcids, cidtogid) local function addglyph(glyph, usedcids, cidtogid)
-- FIXME: Pseudocode
if string.unpack(">i2", glyph) < 0 then -- We have a composite glyph. if string.unpack(">i2", glyph) < 0 then -- We have a composite glyph.
-- This is an untested mess. Disaster will follow. -- This is a mess. Disaster will follow.
local offset = 11 local offset = 11
while offset do while offset do
local flags, component = string.unpack(">I2I2", glyph, offset) local flags, component = string.unpack(">I2I2", glyph, offset)
local gid = cidtogid[component] local gid = cidtogid[component]
print(glyph, component, gid)
if not gid then if not gid then
gid = #usedcids+1 gid = #usedcids
usedcids[gid] = {component} usedcids[gid+1] = {component}
cidtogid[component] = gid cidtogid[component] = gid
end end
glyph = glyph:sub(1, offset-1) .. string.pack(">I2", gid).. glyph:sub(offset+2) glyph = glyph:sub(1, offset+1) .. string.pack(">I2", gid).. glyph:sub(offset+4)
offset = flags&32==32 and offset + 4 + (flags&1==1 and 4 or 2) + (flags&8==8 and 2 or (flags&64==64 and 4 or (flags&128==128 and 8 or 0))) offset = flags&32==32 and offset + 4 + (flags&1==1 and 4 or 2) + (flags&8==8 and 2 or (flags&64==64 and 4 or (flags&128==128 and 8 or 0)))
end end
end end