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if not modules then modules = { } end modules ['page-ins'] = {
version = 1.001,
comment = "companion to page-mix.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
}
local next = next
structures = structures or { }
structures.inserts = structures.inserts or { }
local inserts = structures.inserts
local report_inserts = logs.reporter("inserts")
local allocate = utilities.storage.allocate
inserts.stored = inserts.stored or allocate { } -- combining them in one is inefficient in the
inserts.data = inserts.data or allocate { } -- bytecode storage pool
local variables = interfaces.variables
local v_page = variables.page
local v_columns = variables.columns
local v_firstcolumn = variables.firstcolumn
local v_lastcolumn = variables.lastcolumn
local v_text = variables.text
local context = context
local implement = interfaces.implement
storage.register("structures/inserts/stored", inserts.stored, "structures.inserts.stored")
local data = inserts.data
local stored = inserts.stored
for name, specification in next, stored do
data[specification.number] = specification
data[name] = specification
end
function inserts.define(name,specification)
specification.name= name
local number = specification.number or 0
data[name] = specification
data[number] = specification
-- only needed at runtime as this get stored in a bytecode register
stored[name] = specification
if not specification.location then
specification.location = v_page
end
return specification
end
function inserts.setup(name,settings)
local specification = data[name]
for k, v in next, settings do
-- maybe trace change
specification[k] = v
end
return specification
end
function inserts.setlocation(name,location) -- a practical fast one
data[name].location = location
end
function inserts.getlocation(name,location)
return data[name].location or v_page
end
function inserts.getdata(name) -- or number
return data[name]
end
function inserts.getname(number)
return data[name].name
end
function inserts.getnumber(name)
return data[name].number
end
-- interface
implement {
name = "defineinsertion",
actions = inserts.define,
arguments = {
"string",
{
{ "number", "integer" }
}
}
}
implement {
name = "setupinsertion",
actions = inserts.setup,
arguments = {
"string",
{
{ "location" }
}
}
}
implement {
name = "setinsertionlocation",
actions = inserts.setlocation,
arguments = { "string", "string" }
}
implement {
name = "insertionnumber",
actions = function(name) context(data[name].number or 0) end,
arguments = "string"
}
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