313 lines
9.3 KiB
Lua
313 lines
9.3 KiB
Lua
local scan_int = token.scan_integer
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token.scan_int = scan_int -- For compatibility with LuaTeX packages
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local scan_token = token.scan_token
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local scan_tokenlist = token.scan_tokenlist
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local scan_keyword = token.scan_keyword
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local scan_csname = token.scan_csname
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local set_macro = token.set_macro
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local callback_find = callback.find
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local constants = status.getconstants()
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local lua_call_cmd = token.command_id'lua_call'
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local properties = node.direct.get_properties_table()
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node.direct.properties = properties
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function node.direct.get_properties_table()
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return properties
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end
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-- setmetatable(node.direct.get_properties_table(), {
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-- __index = function(t, id)
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-- local new = {}
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-- t[id] = new
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-- return new
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-- end
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-- })
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local new_whatsit = require'luametalatex-whatsits'.new
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local whatsit_id = node.id'whatsit'
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local spacer_cmd, relax_cmd = token.command_id'spacer', token.command_id'relax'
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local function scan_filename()
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local name = {}
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local quoted = false
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local tok, cmd
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repeat
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tok = scan_token()
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cmd = tok.command
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until cmd ~= spacer_cmd and cmd ~= relax_cmd
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while (tok.command <= 12 and tok.command > 0 and tok.command ~= 9 and tok.index <= constants.max_character_code
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or (token.put_next(tok) and false))
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and (quoted or tok.index ~= string.byte' ') do
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if tok.index == string.byte'"' then
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quoted = not quoted
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else
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name[#name+1] = tok.index
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end
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tok = scan_token()
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end
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return utf8.char(table.unpack(name))
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end
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-- These are chosen to coincide with ltluatex's default catcodetables.
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-- In expl-hook, we check that the values are as expected.
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local initex_catcodetable = 1
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local string_catcodetable = 2
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if status.ini_version then
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tex.runlocal(function()tex.sprint[[\initcatcodetable 1\initcatcodetable 2]]end)
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local setcatcode = tex.setcatcode
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for i=0,127 do
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setcatcode('global', 2, i, 12)
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end
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setcatcode('global', 2, 32, 10)
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end
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local l = lpeg or require'lpeg'
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local add_file_extension = l.Cs((1-('.' * (1-l.S'./\\')^0) * -1)^0 * (l.P(1)^1+l.Cc'.tex'))
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local ofiles, ifiles = {}, {}
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local function do_openout(p)
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if ofiles[p.file] then
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ofiles[p.file]:close()
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end
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local msg
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ofiles[p.file], msg = io.open(add_file_extension:match(p.name), 'w')
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if not ofiles[p.file] then
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error(msg)
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end
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end
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local open_whatsit = new_whatsit('open', do_openout)
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token.luacmd("openout", function(_, immediate) -- \openout
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if immediate == "value" then return end
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if immediate and immediate & 0x7 ~= 0 then
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immediate = immediate & 0x8
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tex.error("Unexpected prefix", "You used \\openout with a prefix that doesn't belong there. I will ignore it for now.")
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end
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local file = scan_int()
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scan_keyword'='
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local name = scan_filename()
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local props = {file = file, name = name}
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if immediate and immediate == 8 then
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do_openout(props)
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else
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local whatsit = node.direct.new(whatsit_id, open_whatsit)
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properties[whatsit] = props
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node.direct.write(whatsit)
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end
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end, "value")
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token.luacmd("openin", function(_, prefix)
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if prefix == "value" then return end
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local file = scan_int()
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scan_keyword'='
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local name = scan_filename()
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if ifiles[file] then
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ifiles[file]:close()
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end
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local msg
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ifiles[file] = callback_find('open_data_file', true)(name) -- raw to pick up our wrapper which handles defaults and finding the file
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end, "value")
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local function do_closeout(p)
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if ofiles[p.file] then
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ofiles[p.file]:close()
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ofiles[p.file] = nil
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end
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end
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local close_whatsit = new_whatsit('close', do_closeout)
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token.luacmd("closeout", function(_, immediate) -- \closeout
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if immediate == "value" then return end
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if immediate and immediate & 0x7 ~= 0 then
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immediate = immediate & 0x8
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tex.error("Unexpected prefix", "You used \\closeout with a prefix that doesn't belong there. I will ignore it for now.")
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end
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local file = scan_int()
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local props = {file = file}
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if immediate == 8 then
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do_closeout(props)
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else
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local whatsit = node.direct.new(whatsit_id, close_whatsit)
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properties[whatsit] = props
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node.direct.write(whatsit)
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end
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end, "value")
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token.luacmd("closein", function(_, prefix)
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if prefix == "value" then return end
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local file = scan_int()
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if ifiles[file] then
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ifiles[file]:close()
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ifiles[file] = nil
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end
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end, "value")
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local function do_write(p)
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local data = token.serialize(p.data)
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local content = data and data .. '\n' or '\n'
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local file = ofiles[p.file]
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if file then
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file:write(content)
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else
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texio.write_nl(p.file < 0 and "log" or "term and log", content)
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end
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end
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local write_whatsit = new_whatsit('write', do_write)
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token.luacmd("write", function(_, immediate) -- \write
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if immediate == "value" then return end
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if immediate and immediate & 0x7 ~= 0 then
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immediate = immediate & 0x8
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tex.error("Unexpected prefix", "You used \\write with a prefix that doesn't belong there. I will ignore it for now.")
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end
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local file = scan_int()
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local content = scan_tokenlist()
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local props = {file = file, data = content}
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if immediate == 8 then
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do_write(props)
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else
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local whatsit = node.direct.new(whatsit_id, write_whatsit)
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properties[whatsit] = props
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node.direct.write(whatsit)
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end
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end, "value")
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local undefined_tok = token.new(0, token.command_id'undefined_cs')
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local prefix_cmd = token.command_id'prefix'
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local function prefix_to_tokens(prefix)
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if not prefix then return end
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for i=2, 0, -1 do
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if prefix & (1<<i) ~= 0 then
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token.put_next(token.new(i, prefix_cmd))
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end
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end
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end
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local expand_after = token.primitive_tokens.expandafter
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local input_tok = token.primitive_tokens.input
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local endlocalcontrol = token.primitive_tokens.endlocalcontrol
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local afterassignment = token.primitive_tokens.afterassignment
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local lbrace = token.new(0, 1)
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local rbrace = token.new(0, 2)
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token.luacmd("read", function(_, prefix)
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if immediate == "value" then return end
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local id = scan_int()
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if not scan_keyword'to' then
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tex.error("Missing `to' inserted", "You should have said `\\read<number> to \\cs'.\nI'm going to look for the \\cs now.")
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end
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local macro = scan_csname(true)
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local file = ifiles[id]
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local line
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if file then
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line = file:reader()
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if not line then
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file:close()
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ifiles[id] = nil
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end
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else
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error[[FIXME: Ask the user for input]]
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end
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local endlocal
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tex.runlocal(function()
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endlocal = token.scan_next()
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tex.sprint(endlocal)
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tex.print(line and line ~= "" and line or " ")
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tex.print(endlocal)
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end)
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local tokens = {}
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local balance = 0
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while true do
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local tok = token.scan_next()
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if tok == endlocal then break end
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if tok.command == 1 then
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balance = balance + 1
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elseif tok.command == 2 then
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balance = balance - 1
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end
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tokens[#tokens+1] = tok
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end
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if balance ~= 0 then error[[FIXME: Read additional input lines]] end
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tex.runlocal(function()
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tokens[#tokens+1] = rbrace
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token.put_next(tokens)
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token.put_next(token.primitive_tokens.def, token.create(macro), lbrace)
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prefix_to_tokens(prefix)
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end)
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end, "value")
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token.luacmd("readline", function(_, prefix)
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if immediate == "value" then return end
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local id = scan_int()
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if not scan_keyword'to' then
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tex.error("Missing `to' inserted", "You should have said `\\read<number> to \\cs'.\nI'm going to look for the \\cs now.")
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end
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local macro = scan_csname(true)
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local file = ifiles[id]
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local line
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if file then
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line = file:reader()
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if not line then
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file:close()
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ifiles[id] = nil
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end
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else
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error[[FIXME: Ask the user for input]]
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end
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line = line and line:match"^(.*[^ ])[ ]*$"
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local endlinechar = tex.endlinechar
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if endlinechar >= 0 and endlinechar < 0x80 then
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line = (line or '') .. string.char(endlinechar)
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end
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set_macro(string_catcodetable, macro, line or '', prefix)
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end, "value")
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local integer_code, boolean_code do
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local value_values = token.getfunctionvalues()
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for i=0,#value_values do
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if value_values[i] == "integer" then
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integer_code = i
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elseif value_values[i] == "boolean" then
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boolean_code = i
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end
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end
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end
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token.luacmd("ifeof", function(_)
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local id = scan_int()
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return boolean_code, not ifiles[id]
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end, "condition")
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local late_lua_whatsit = new_whatsit('late_lua', function(p, pfile, n, x, y)
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local code = p.data
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if not code then
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code = token.serialize(p.token)
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end
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if type(code) == 'string' then
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code = assert(load(code, nil, 't'))
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elseif not code then
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error[[Missing code in latelua]]
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end
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return pdf._latelua(pfile, x, y, code)
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end)
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token.luacmd("latelua", function() -- \latelua
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local content = scan_tokenlist()
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local props = {token = content}
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local whatsit = node.direct.new(whatsit_id, late_lua_whatsit)
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properties[whatsit] = props
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node.direct.write(whatsit)
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end, "protected")
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local functions = lua.get_functions_table()
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require'luametalatex-meaning'
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require'luametalatex-baseregisters'
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require'luametalatex-back-pdf'
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require'luametalatex-node-luaotfload'
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token.luacmd("Umathcodenum", function(_, scanning)
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if scanning then
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local class, family, char = tex.getmathcodes (scan_int())
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return integer_code, char | (class | family << 3) << 21
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else
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local char = scan_int()
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local mathcode = scan_int()
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tex.setmathcodes(char, (mathcode >> 21) & 7, mathcode >> 24, mathcode & 0x1FFFFF)
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end
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end, "force", "global", "value")
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-- This is effectivly the last line before we hand over to normal TeX.
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require'luametalatex-callbacks'.__freeze = nil
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