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require"gates.lua"
pitex = gates.new("pitex")
pitex.misc = gates.new("pitex.misc")
function pitex.log (message, ...)
texio.write_nl(string.format("\n" .. message .. "\n", ...))
end
function pitex.error (...)
tex.error ("! PiTeX error: " .. string.format(...) .. ".")
end
pitex.callback = gates.new("pitex.callback")
-- Creates a gate with a callback's name and put it in that callback, if not
-- already there. Adds the subgate(s).
function pitex.callback.register (c, f)
if pitex.callback.type(c) == 2 then
pitex.callback.add(f, c)
else
pitex.callback.list{c}
pitex.callback.add(f, c)
callback.register(c, pitex.callback.execute[c])
end
end
-- Latin1 to UTF-8.
local char = unicode.utf8.char
local function convert_char (ch)
return char(string.byte(ch))
end
function pitex.callback.convert (buf)
return string.gsub(buf,".",convert_char)
end
pitex.callback.register("process_input_buffer", "convert")
function remove_conversion ()
pitex.callback.close("convert", "process_input_buffer")
end
function restore_conversion ()
pitex.callback.open("convert", "process_input_buffer")
end
require("nodeinspector")
new_inspection = nodeinspector.new_inspection
local french_highmarks = {
string.byte("?"),
string.byte("!"),
string.byte(":"),
string.byte(";"),
}
local french_marks = {
string.byte("?"),
string.byte("!"),
string.byte(":"),
string.byte(";"),
string.byte(","),
string.byte("."),
string.byte("("),
string.byte("["),
string.byte("{"),
}
local function french_punctuation (head, ...)
for _, glue in ipairs(arg) do
if glue.id == 10 then
head = node.remove(head, glue)
node.free(glue)
end
end
local kern = node.new(11, 1)
kern.kern = tex.sp(".15em")
node.insert_after(head, arg[1], kern)
end
pitex.callback.french_punctuation = new_inspection(
french_punctuation,
{{id = 37, _char = french_marks}, {true, id = 37, char = french_highmarks}},
{{id = 10, subtype = 0}, {id = 11, subtype = 0}})
pitex.callback.register("kerning", "french_punctuation")
pitex.callback.original_kerning = node.kerning
pitex.callback.register("kerning", "original_kerning")
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