diff options
Diffstat (limited to 'tex/context/base/mkiv/page-ini.lua')
| -rw-r--r-- | tex/context/base/mkiv/page-ini.lua | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/page-ini.lua b/tex/context/base/mkiv/page-ini.lua new file mode 100644 index 000000000..17723c421 --- /dev/null +++ b/tex/context/base/mkiv/page-ini.lua @@ -0,0 +1,203 @@ +if not modules then modules = { } end modules ['page-ini'] = { + version = 1.001, + comment = "companion to page-ini.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +local tonumber, rawget, type, next = tonumber, rawget, type, next +local match = string.match +local sort, tohash, insert, remove = table.sort, table.tohash, table.insert, table.remove +local settings_to_array, settings_to_hash = utilities.parsers.settings_to_array, utilities.parsers.settings_to_hash + +local texgetcount = tex.getcount + +local context = context +local ctx_testcase = commands.testcase + +local data = table.setmetatableindex("table") +local last = 0 +local pages = structures.pages +local autolist = { } +local report = logs.reporter("pages","mark") + +local trace = false trackers.register("pages.mark",function(v) trace = v end) + +function pages.mark(name,list) + local realpage = texgetcount("realpageno") + if not list or list == "" then + if trace then + report("marking current page %i as %a",realpage,name) + end + data[realpage][name] = true + return + end + if type(list) == "string" then + list = settings_to_array(list) + end + if type(list) == "table" then + for i=1,#list do + local page = list[i] + local sign = false + if type(page) == "string" then + local s, p = match(page,"([%+%-])(%d+)") + if s then + sign, page = s, p + end + end + page = tonumber(page) + if page then + if sign == "+" then + page = realpage + page + end + if sign == "-" then + report("negative page numbers are not supported") + else + if trace then + report("marking page %i as %a",page,name) + end + data[page][name] = true + end + end + end + else + if trace then + report("marking current page %i as %a",realpage,name) + end + data[realpage][name] = true + end +end + +function pages.marked(name) + local realpage = texgetcount("realpageno") + for i=last,realpage-1 do + data[i] = nil + end + local pagedata = rawget(data,realpage) + return pagedata and pagedata[name] +end + +local function toranges(marked) + local list = { } + local size = #marked + if size > 0 then + local first = marked[1] + local last = first + for i=2,size do + local page = marked[i] + if page > last + 1 then + list[#list+1] = { first, last } + first = page + end + last = page + end + list[#list+1] = { first, last } + end + return list +end + +pages.toranges = toranges + +local function allmarked(list) + if list then + local collected = pages.collected + if collected then + if type(list) == "string" then + list = settings_to_hash(list) + elseif type(list) == "table" and #list > 0 then + list = tohash(list) + end + if type(list) == "table" then + local found = { } + for name in next, list do + for page, list in next, data do + if list[name] and collected[page] then + found[#found+1] = page + end + end + end + if #found > 0 then + sort(found) + if trace then + local ranges = toranges(found) + for i=1,#ranges do + local range = ranges[i] + local first = range[1] + local last = range[2] + if first == last then + report("marked page : %i",first) + else + report("marked range: %i upto %i",first,last) + end + end + end + return found + end + end + end + end +end + +pages.allmarked = allmarked + +-- An alternative is to use an attribute and identify the state by parsing the node +-- list but that's a bit overkill for a hardly used feature like this. + +luatex.registerpageactions(function() + local nofauto = #autolist + if nofauto > 0 then + local realpage = texgetcount("realpageno") + for i=1,nofauto do + local names = autolist[i] + for j=1,#names do + local name = names[j] + data[realpage][name] = true + if trace then + report("automatically marking page %i as %a",realpage,name) + end + end + end + end +end) + +interfaces.implement { + name = "markpage", + arguments = { "string", "string" }, + actions = pages.mark +} + +interfaces.implement { + name = "doifelsemarkedpage", + arguments = "string", + actions = { marked, ctx_testcase } +} + +interfaces.implement { + name = "markedpages", + arguments = "string", + actions = function(name) + local t = allmarked(name) + if t then + context("%,t",t) + end + end +} + +interfaces.implement { + name = "startmarkpages", + arguments = "string", + actions = function(name) + insert(autolist,settings_to_array(name)) + end +} + +interfaces.implement { + name = "stopmarkpages", + arguments = "string", + actions = function(name) + if #autolist > 0 then + remove(autolist) + end + end +} |