90 lines
3.0 KiB
Lua
90 lines
3.0 KiB
Lua
local io_open = io.open
|
|
local write = texio.write
|
|
local find_file = kpse.find_file
|
|
|
|
local callbacks = require'luametalatex-callbacks'
|
|
|
|
-- local categories = { data = 1, map = 2, image = 3, subset = 4, font = 5 -- , enc = 6, pdf_stream = 7, pdf_stream = 8, silent = 9}
|
|
|
|
local our_callbacks = {
|
|
vf = {'vf', false, 'rb', 'find_vf_file', 'read_vf_file'},
|
|
tfm = {'tfm', false, 'rb', 'find_font_file', 'read_font_file'},
|
|
map = {'map', 2, 'r', 'find_map_file', 'read_map_file'},
|
|
enc = {'enc files', false, 'r', 'find_enc_file', 'read_enc_file'},
|
|
type1 = {'type1 fonts', 4, 'rb', 'find_type1_file', 'read_type1_file'},
|
|
truetype = {'truetype fonts', 4, 'rb', 'find_truetype_file', 'read_truetype_file'},
|
|
opentype = {'opentype fonts', 4, 'rb', 'find_opentype_file', 'read_opentype_file'},
|
|
pk = {'pk', 4, 'rb', 'find_pk_file', 'read_pk_file'},
|
|
image = {'tex', 3, 'rb', 'find_image_file', 'read_image_file'},
|
|
data = {'tex', 1, 'rb', 'find_data_file', 'read_data_file'},
|
|
}
|
|
|
|
local start_categories = { [0] = '?', '(', '{', '<', '<', '<<' }
|
|
local stop_categories = { [0] = '?', ')', '}', '>', '>', '>>' }
|
|
|
|
local function stop_file(t)
|
|
local cb = callbacks.stop_file
|
|
if cb then
|
|
cb(t.category)
|
|
else
|
|
write(stop_categories[t.category] or '')
|
|
end
|
|
if t.file then t.file:close() end
|
|
end
|
|
|
|
local meta_file = {
|
|
__close = stop_file,
|
|
__call = function(t) return t.file:read'a' end,
|
|
close = stop_file,
|
|
lines = function(t, ...) return t.file:lines(...) end,
|
|
}
|
|
meta_file.__index = meta_file
|
|
|
|
local meta_data = {
|
|
__close = stop_file,
|
|
__call = function(t) return t.data end,
|
|
close = stop_file,
|
|
lines = function(t, ...) return t.data:gmatch('([^\n]*)\n') end,
|
|
}
|
|
meta_data.__index = meta_data
|
|
|
|
return function(kind, name, ...)
|
|
local handle
|
|
local kind_info = our_callbacks[kind]
|
|
local msg
|
|
if kind_info then
|
|
local find_callback = callbacks[kind_info[4]]
|
|
if find_callback then
|
|
name, msg = find_callback(name, ...)
|
|
else
|
|
name, msg = find_file(name, kind_info[1], ...)
|
|
end
|
|
if not name then return name, msg end
|
|
handle = {category = kind_info[2]}
|
|
local read_callback = callbacks[kind_info[5]]
|
|
if read_callback then
|
|
local success, data, size = read_callback(name)
|
|
if not success then return success, data end
|
|
if size < #data then data = data:sub(1,size) end
|
|
handle.data = data, data
|
|
setmetatable(handle, meta_data)
|
|
else
|
|
local f f, msg = io_open(name, kind_info[3])
|
|
if not f then return f, msg end
|
|
handle.file = f
|
|
setmetatable(handle, meta_file)
|
|
end
|
|
if handle.category then
|
|
local cb = callbacks.start_file
|
|
if cb then
|
|
cb(handle.category, name)
|
|
else
|
|
write(start_categories[handle.category] .. name)
|
|
end
|
|
end
|
|
else
|
|
error[[Unknown file]]
|
|
end
|
|
return handle, name
|
|
end
|