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if not modules then modules = { } end modules ['strc-blk'] = {
version = 1.001,
comment = "companion to strc-blk.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- this one runs on top of buffers and structure
local type, next = type, next
local find, formatters, validstring = string.find, string.formatters, string.valid
local settings_to_set, settings_to_array = utilities.parsers.settings_to_set, utilities.parsers.settings_to_array
local allocate = utilities.storage.allocate
local context = context
local commands = commands
local implement = interfaces.implement
local structures = structures
structures.blocks = structures.blocks or { }
local blocks = structures.blocks
local sections = structures.sections
local lists = structures.lists
local helpers = structures.helpers
local collected = allocate()
local tobesaved = allocate()
local states = allocate()
blocks.collected = collected
blocks.tobesaved = tobesaved
blocks.states = states
local function initializer()
collected = blocks.collected
tobesaved = blocks.tobesaved
end
job.register('structures.blocks.collected', tobesaved, initializer)
local listitem = utilities.parsers.listitem
local f_block = formatters["block.%s"]
function blocks.uservariable(index,key,default)
local c = collected[index]
if c then
local u = c.userdata
if u then
local v = u[key] or default
if v then
context(v)
end
end
end
end
local function printblock(index,name,data,hide)
if hide then
context.dostarthiddenblock(index,name)
else
context.dostartnormalblock(index,name)
end
context.viafile(data,f_block(validstring(name,"noname")))
if hide then
context.dostophiddenblock()
else
context.dostopnormalblock()
end
end
blocks.print = printblock
function blocks.define(name)
states[name] = { all = "hide" }
end
function blocks.setstate(state,name,tag)
local all = tag == ""
local tags = not all and settings_to_array(tag)
for n in listitem(name) do
local sn = states[n]
if not sn then
-- error
elseif all then
sn.all = state
else
for _, tag in next, tags do
sn[tag] = state
end
end
end
end
function blocks.select(state,name,tag,criterium)
criterium = criterium or "text"
if find(tag,"=",1,true) then
tag = ""
end
local names = settings_to_set(name)
local all = tag == ""
local tags = not all and settings_to_set(tag)
local hide = state == "process"
local result = lists.filter {
names = "all",
criterium = criterium,
number = sections.numberatdepth(criterium), -- not needed
collected = collected,
}
for i=1,#result do
local ri = result[i]
local metadata = ri.metadata
if names[metadata.name] then
if all then
printblock(ri.index,name,ri.data,hide)
else
local mtags = metadata.tags
if mtags then
for tag, sta in next, tags do
if mtags[tag] then
printblock(ri.index,name,ri.data,hide)
break
end
end
end
end
end
end
end
function blocks.save(name,tag,userdata,buffer) -- wrong, not yet adapted
local data = buffers.getcontent(buffer)
local tags = settings_to_set(tag)
local plus = false
local minus = false
local last = #tobesaved + 1
local all = states[name].all
if tags['+'] then
plus = true
tags['+'] = nil
end
if tags['-'] then
minus = true
tags['-'] = nil
end
tobesaved[last] = helpers.simplify {
metadata = {
name = name,
tags = tags,
plus = plus,
minus = minus,
},
index = last,
data = data or "error",
userdata = userdata and type(userdata) == "string" and helpers.touserdata(userdata),
references = {
section = sections.currentid(),
},
}
if not next(tags) then
if all ~= "hide" then
printblock(last,name,data)
elseif plus then
printblock(last,name,data,true)
end
else
local sn = states[name]
for tag, _ in next, tags do
if sn[tag] == nil then
if all ~= "hide" then
printblock(last,name,data)
break
end
elseif sn[tag] ~= "hide" then
printblock(last,name,data)
break
end
end
end
buffers.erase(buffer)
end
-- interface
implement { name = "definestructureblock", actions = blocks.define, arguments = "string" }
implement { name = "savestructureblock", actions = blocks.save, arguments = "4 strings" }
implement { name = "selectstructureblock", actions = blocks.select, arguments = "4 strings" }
implement { name = "setstructureblockstate", actions = blocks.setstate, arguments = "3 strings" }
implement { name = "structureblockuservariable", actions = blocks.uservariable, arguments = { "integer", "string" } }
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