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if not modules then modules = { } end modules ['typo-inj'] = { -- was node-par
version = 1.001,
comment = "companion to typo-inj.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local tonumber = tonumber
local context = context
local implement = interfaces.implement
local injectors = { }
typesetters.injectors = injectors
local list = { }
injectors.list = list
local showall = false
local settings_to_array = utilities.parsers.settings_to_array
local ctx_domarkinjector = context.domarkinjector
local ctx_doactivateinjector = context.doactivateinjector
table.setmetatableindex(list,function(t,k)
local v = {
counter = 0,
actions = { },
show = false,
active = false,
}
t[k] = v
return v
end)
function injectors.reset(name)
list[name] = nil
end
function injectors.set(name,numbers,command)
local injector = list[name]
local actions = injector.actions
local places = settings_to_array(numbers)
for i=1,#places do
actions[tonumber(places[i])] = command
end
if not injector.active then
ctx_doactivateinjector(name)
injector.active = true
end
end
function injectors.show(name)
if not name or name == "" then
showall = true
else
local list = settings_to_array(name)
for i=1,#list do
list[list[i]].show = true
end
end
end
function injectors.mark(name,show)
local injector = list[name]
local n = injector.counter + 1
injector.counter = n
if showall or injector.show then
ctx_domarkinjector(injector.actions[n] and 1 or 0,n)
end
end
function injectors.check(name,n) -- we could also accent n = number : +/- 2
local injector = list[name]
if n == false then
n = injector.counter
elseif n == nil then
n = injector.counter + 1 -- next (upcoming)
else
n = tonumber(n) or 0
end
local action = injector.actions[n]
if action then
context(action)
end
end
implement { name = "resetinjector", actions = injectors.reset, arguments = "string" }
implement { name = "showinjector", actions = injectors.show, arguments = "string" }
implement { name = "setinjector", actions = injectors.set, arguments = { "string", "string", "string" } }
implement { name = "markinjector", actions = injectors.mark, arguments = "string" }
implement { name = "checkinjector", actions = injectors.check, arguments = "string" }
implement { name = "checkpreviousinjector", actions = injectors.check, arguments = { "string", true } }
implement { name = "checknextinjector", actions = injectors.check }
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