50 lines
1.6 KiB
Lua
50 lines
1.6 KiB
Lua
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local purenumber = lpeg.R'09'^1
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local optoperator = lpeg.C(lpeg.S'+-='^-1)*lpeg.C(lpeg.P(1)^0)
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local commentchar = lpeg.S' %*;#'+-1
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local wordpatt = (lpeg.C('"') * lpeg.C((1-lpeg.P'"')^0) * lpeg.P'"'^-1 + lpeg.C(('<' * lpeg.S'<['^-1)^-1) * lpeg.S' \t'^0 * lpeg.C((1-lpeg.S' \t')^0)) * lpeg.S' \t'^0 * lpeg.Cp()
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local fontmap = {}
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local function mapline(line, operator)
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if not operator then
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operator, line = optoperator:match(line)
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end
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if commentchar:match(line) then return end
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local pos = 1
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local tfmname, psname, flags, special, enc, font, subset
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local kind, word
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while pos ~= #line+1 do
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kind, word, pos = wordpatt:match(line, pos)
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if kind == "" then
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if not tfmname then tfmname = word
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elseif not psname and not purenumber:match(word) then
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psname = word
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elseif purenumber:match(word) then flags = tonumber(word)
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else
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error[[Invalid map file line, excessive simple words]]
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end
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elseif kind == '"' then
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special = word
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else
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if kind == "<[" or (kind ~= "<<" and word:sub(-4) == ".enc") then
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enc = word
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else
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font = word
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subset = kind ~= "<<"
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end
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end
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end
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fontmap[tfmname] = {psname or tfmname, flags or (font and 4 or 0x22), font, enc, special, subset}
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end
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local function mapfile(filename, operator)
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if not operator then
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operator, filename = optoperator:match(filename)
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end
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local file = io.open(kpse.find_file(filename, 'map'))
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for line in file:lines() do mapline(line, operator) end
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file:close()
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end
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return {
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mapline = mapline,
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mapfile = mapfile,
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fontmap = fontmap
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}
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