72 lines
2.5 KiB
Lua
72 lines
2.5 KiB
Lua
local write_xml = require'luamml-xmlwriter'
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local make_root = require'luamml-convert'.make_root
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local save_result = require'luamml-tex'.save_result
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local store_column = require'luamml-table'.store_column
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local store_tag = require'luamml-table'.store_tag
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local get_table = require'luamml-table'.get_table
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local properties = node.get_properties_table()
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local funcid = luatexbase.new_luafunction'__luamml_amsmath_add_box_to_row:'
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token.set_lua('__luamml_amsmath_add_box_to_row:', funcid, 'protected')
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lua.get_functions_table()[funcid] = function()
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-- TODO: Error handling etc
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-- local box = token.scan_int()
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local boxnum = 0
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local startmath = tex.box[boxnum].list
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assert(startmath.id == node.id"math")
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store_column(startmath, true)
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end
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funcid = luatexbase.new_luafunction'__luamml_amsmath_finalize_table:'
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token.set_lua('__luamml_amsmath_finalize_table:', funcid)
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lua.get_functions_table()[funcid] = function()
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-- TODO: Error handling etc
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local mml_table = get_table()
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if not mml_table then return end
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mml_table.displaystyle = true
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local columns = node.count(node.id'align_record', tex.lists.align_head)//2
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mml_table.columnalign = string.rep('right left', columns, ' ')
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local spacing = {}
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for n in node.traverse_id(node.id'glue', tex.lists.align_head) do
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spacing[#spacing+1] = n.width == 0 and '0' or '.8em'
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end
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mml_table.columnspacing = table.concat(spacing, ' ', 2, #spacing-2)
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save_result(mml_table, 0)
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end
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local last_tag
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funcid = luatexbase.new_luafunction'__luamml_amsmath_save_tag:'
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token.set_lua('__luamml_amsmath_save_tag:', funcid, 'protected')
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lua.get_functions_table()[funcid] = function()
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local nest = tex.nest.top
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local chars = {}
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for n, id, sub in node.traverse(nest.head.next) do
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if id == node.id'glyph' then
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if sub >= 0x100 then
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texio.write_nl'WARNING: Already shaped glyph detected in tag. This might lead to wrong output.'
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end
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chars[#chars+1] = n.char
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elseif id == node.id'glue' then
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chars[#chars+1] = 0x20
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elseif id == node.id'kern' then
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else
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print(n)
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texio.write_nl'WARNING: Unsupported node in tag dropped'
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end
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end
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last_tag = utf8.char(table.unpack(chars))
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end
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funcid = luatexbase.new_luafunction'__luamml_amsmath_set_tag:'
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token.set_lua('__luamml_amsmath_set_tag:', funcid, 'protected')
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lua.get_functions_table()[funcid] = function()
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if not last_tag then
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texio.write_nl'WARNING: Tag extraction failed'
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return
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end
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store_tag({[0] = 'mtd', {[0] = 'mtext', last_tag}})
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last_tag = nil
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end
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