64 lines
1.8 KiB
Lua
64 lines
1.8 KiB
Lua
local properties = node.get_properties_table()
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local function to_unicode(head, tail)
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local result, i = {}, 0
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local characters, last_fid
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local iter, state, n = node.traverse(head)
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while true do
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local id, sub n, id, sub = iter(state, n)
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if not n or n == tail then break end
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local props = properties[n]
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if props and props.glyph_info then
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i = i+1
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result[i] = glyph_info
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else
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local char, fid = node.is_glyph(n)
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if char then
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if fid ~= last_fid then
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local fontdir = font.getfont(fid)
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characters, last_fid = fontdir.characters, fid
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end
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local uni = characters[char]
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local uni = uni and uni.unicode
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i = i+1
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if uni then
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if type(uni) == 'number' then
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result[i] = utf.char(uni)
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else
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result[i] = utf.char(table.unpack(uni))
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end
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else
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if char < 0x110000 then
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result[i] = utf.char(char)
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else
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result[i] = '\u{FFFD}'
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end
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end
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-- elseif node.id'math' == id then
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-- n = node.end_of_math(n) -- Not sure yet
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-- elseif node.id'whatsit' == id then
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-- TODO(?)
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elseif node.id'glue' == id then
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if n.width > 1000 then -- FIXME: Coordinate constant with tagpdf
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i = i+1
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result[i] = ' '
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end
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elseif node.id'hlist' == id then
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i = i+1
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result[i] = '\u{FFFD}'
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elseif node.id'vlist' == id then
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i = i+1
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result[i] = '\u{FFFD}'
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elseif node.id'rule' == id then
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if n.width ~= 0 then
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i = i+1
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result[i] = '\u{FFFD}'
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end
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end -- CHECK: Everything else can probably be ignored, otherwise shout at me
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end
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end
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return {[0] = 'mtext', table.concat(result)}
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end
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return to_unicode
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