casile 0.14.4

The command line interface to the CaSILE toolkit, a book publishing workflow employing SILE and other wizardry
Documentation 
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local base = require("packages.base")

local package = pl.class(base)
package._name = "dumpframes"

local seenframes = {}
local outfile

function package.writeTof ()
   local contents = "return " .. pl.pretty.write(seenframes)
   local toffile, err = io.open(outfile, "w")
   if not toffile then
      return SU.error(err)
   end
   toffile:write(contents)
end

function package.saveFrames (_)
   for id, spec in pairs(SILE.frames) do
      seenframes[id] = {
         spec:left():tonumber(),
         spec:top():tonumber(),
         spec:right():tonumber(),
         spec:bottom():tonumber(),
      }
   end
end

function package:_init (options)
   base._init(self)
   outfile = options.outfile or SILE.masterFilename .. ".tof"
   self.class:registerHook("endpage", self.saveFrames)
   self.class:registerHook("finish", self.writeTof)
end

return package