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author | Context Git Mirror Bot <phg42.2a@gmail.com> | 2016-05-17 19:31:15 +0200 |
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committer | Context Git Mirror Bot <phg42.2a@gmail.com> | 2016-05-17 19:31:15 +0200 |
commit | 2017d30b4ca772c8eeac4fc0eb9b54e547a9a1d8 (patch) | |
tree | d96df31f305a095c078ea5fb9f639ca34ac36c12 /tex/context/base/mkiv/strc-pag.lua | |
parent | 53ff76b73cd1f373ecdfb0f7f17df6f352621d6e (diff) | |
download | context-2017d30b4ca772c8eeac4fc0eb9b54e547a9a1d8.tar.gz |
2016-05-17 19:25:00
Diffstat (limited to 'tex/context/base/mkiv/strc-pag.lua')
-rw-r--r-- | tex/context/base/mkiv/strc-pag.lua | 418 |
1 files changed, 418 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/strc-pag.lua b/tex/context/base/mkiv/strc-pag.lua new file mode 100644 index 000000000..dcd35fc20 --- /dev/null +++ b/tex/context/base/mkiv/strc-pag.lua @@ -0,0 +1,418 @@ +if not modules then modules = { } end modules ['strc-pag'] = { + version = 1.001, + comment = "companion to strc-pag.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +local allocate, mark = utilities.storage.allocate, utilities.storage.mark + +local trace_pages = false trackers.register("structures.pages", function(v) trace_pages = v end) + +local report_pages = logs.reporter("structure","pages") + +local structures = structures + +local helpers = structures.helpers +local sections = structures.sections +local pages = structures.pages +local sets = structures.sets +local counters = structures.counters + +local counterdata = counters.data + +local variables = interfaces.variables +local context = context +local commands = commands +local implement = interfaces.implement + +local processors = typesetters.processors +local applyprocessor = processors.apply +local startapplyprocessor = processors.startapply +local stopapplyprocessor = processors.stopapply + +local texsetcount = tex.setcount +local texgetcount = tex.getcount + +local ctx_convertnumber = context.convertnumber + +-- storage + +local collected, tobesaved = allocate(), allocate() + +pages.collected = collected +pages.tobesaved = tobesaved +pages.nofpages = 0 + +local function initializer() + collected = pages.collected + tobesaved = pages.tobesaved + pages.nofpages = #collected +end + +job.register('structures.pages.collected', tobesaved, initializer) + +local specification = { } -- to be checked + +function pages.save(prefixdata,numberdata,extradata) + local realpage = texgetcount("realpageno") + local userpage = texgetcount("userpageno") + if realpage > 0 then + if trace_pages then + report_pages("saving page %s.%s",realpage,userpage) + end + local viewerprefix = extradata.viewerprefix + local state = extradata.state + local data = { + number = userpage, + viewerprefix = viewerprefix ~= "" and viewerprefix or nil, + state = state ~= "" and state or nil, -- maybe let "start" be default + block = sections.currentblock(), + prefixdata = prefixdata and helpers.simplify(prefixdata), + numberdata = numberdata and helpers.simplify(numberdata), + } + tobesaved[realpage] = data + if not collected[realpage] then + collected[realpage] = data + end + elseif trace_pages then + report_pages("not saving page %s.%s",realpage,userpage) + end +end + +-- We can set the pagenumber but as it only get incremented in the page +-- builder we have to make sure it starts at least at 1. + +function counters.specials.userpage() + local r = texgetcount("realpageno") + if r > 0 then + local t = tobesaved[r] + if t then + t.number = texgetcount("userpageno") + if trace_pages then + report_pages("forcing pagenumber of realpage %s to %s",r,t.number) + end + return + end + end + local u = texgetcount("userpageno") + if u == 0 then + if trace_pages then + report_pages("forcing pagenumber of realpage %s to %s (probably a bug)",r,1) + end + counters.setvalue("userpage",1) + texsetcount("userpageno",1) -- not global ? + end +end + +-- local f_convert = string.formatters["\\convertnumber{%s}{%s}"] +-- +-- local function convertnumber(str,n) +-- return f_convert(str or "numbers",n) +-- end + +function pages.number(realdata,pagespec) + local userpage, block = realdata.number, realdata.block or "" -- sections.currentblock() + local numberspec = realdata.numberdata + local conversionset = (pagespec and pagespec.conversionset ~= "" and pagespec.conversionset) or (numberspec and numberspec.conversionset ~= "" and numberspec.conversionset) or "" + local conversion = (pagespec and pagespec.conversion ~= "" and pagespec.conversion ) or (numberspec and numberspec.conversion ~= "" and numberspec.conversion ) or "" + local starter = (pagespec and pagespec.starter ~= "" and pagespec.starter ) or (numberspec and numberspec.starter ~= "" and numberspec.starter ) or "" + local stopper = (pagespec and pagespec.stopper ~= "" and pagespec.stopper ) or (numberspec and numberspec.stopper ~= "" and numberspec.stopper ) or "" + if starter ~= "" then + applyprocessor(starter) + end + if conversion ~= "" then + ctx_convertnumber(conversion,userpage) + else + if conversionset == "" then conversionset = "default" end + local theconversion = sets.get("structure:conversions",block,conversionset,1,"numbers") -- to be checked: 1 + local data = startapplyprocessor(theconversion) + ctx_convertnumber(data or "number",userpage) + stopapplyprocessor() + end + if stopper ~= "" then + applyprocessors(stopper) + end +end + +-- (pagespec.prefix == yes|unset) and (pages.prefix == yes) => prefix + +function pages.analyze(entry,pagespecification) + -- safeguard + if not entry then + return false, false, "no entry" + end + local references = entry.references + if not references then + return false, false, "no references" + end + local pagedata = references.pagedata -- sometimes resolved (external) + if not pagedata then + local realpage = references.realpage + if realpage then + pagedata = collected[realpage] + else + return false, false, "no realpage" + end + end + if not pagedata then + return false, false, "no pagedata" + end + local sectiondata = references.sectiondata -- sometimes resolved (external) + if not sectiondata then + local section = references.section + if section then + sectiondata = sections.collected[section] + else + return pagedata, false, "no section" + end + end + if not sectiondata then + return pagedata, false, "no sectiondata" + end + local no = variables.no + -- local preferences + if pagespecification and pagespecification.prefix == no then + return pagedata, false, "current spec blocks prefix" + end + -- stored preferences + -- if entry.prefix == no then + -- return pagedata, false, "entry blocks prefix" + -- end + -- stored page state + pagespecification = pagedata.prefixdata + if pagespecification and pagespecification.prefix == no then + return pagedata, false, "pagedata blocks prefix" + end + -- final verdict + return pagedata, sectiondata, "okay" +end + +function helpers.page(data,pagespec) + if data then + local pagedata = pages.analyze(data,pagespec) + if pagedata then + pages.number(pagedata,pagespec) + end + end +end + +function helpers.prefixpage(data,prefixspec,pagespec) + if data then + local pagedata, prefixdata, e = pages.analyze(data,pagespec) + if pagedata then + if prefixdata then + sections.typesetnumber(prefixdata,"prefix",prefixspec or false,prefixdata or false,pagedata.prefixdata or false) + end + pages.number(pagedata,pagespec) + end + end +end + +function helpers.prefixlastpage(data,prefixspec,pagespec) + if data then + local r = data.references + local ls, lr = r.section, r.realpage + r.section, r.realpage = r.lastsection or r.section, r.lastrealpage or r.realpage + helpers.prefixpage(data,prefixspec,pagespec) + r.section, r.realpage = ls, lr + end +end + +-- + +function helpers.analyze(entry,specification) + -- safeguard + if not entry then + return false, false, "no entry" + end + local yes, no = variables.yes, variables.no + -- section data + local references = entry.references + if not references then + return entry, false, "no references" + end + local section = references.section + if not section then + return entry, false, "no section" + end + local sectiondata = sections.collected[references.section] + if not sectiondata then + return entry, false, "no section data" + end + -- local preferences + if specification and specification.prefix == no then + return entry, false, "current spec blocks prefix" + end + -- stored preferences (not used) + local prefixdata = entry.prefixdata + if prefixdata and prefixdata.prefix == no then + return entry, false, "entry blocks prefix" + end + -- final verdict + return entry, sectiondata, "okay" +end + +function helpers.prefix(data,prefixspec) + if data then + local _, prefixdata, status = helpers.analyze(data,prefixspec) + if prefixdata then + sections.typesetnumber(prefixdata,"prefix",prefixspec or false,data.prefixdata or false,prefixdata or false) + end + end +end + +function helpers.pageofinternal(n,prefixspec,pagespec) + local data = structures.references.internals[n] + if not data then + -- error + elseif prefixspec then + helpers.prefixpage(data,prefixspec,pagespec) + else + helpers.prefix(data,pagespec) + end +end + +function pages.is_odd(n) + n = n or texgetcount("realpageno") + if texgetcount("pagenoshift") % 2 == 0 then + return n % 2 ~= 0 + else + return n % 2 == 0 + end +end + +function pages.on_right(n) + local pagemode = texgetcount("pageduplexmode") + if pagemode == 2 or pagemode == 1 then + n = n or texgetcount("realpageno") + if texgetcount("pagenoshift") % 2 == 0 then + return n % 2 ~= 0 + else + return n % 2 == 0 + end + else + return true + end +end + +function pages.in_body(n) + return texgetcount("pagebodymode") > 0 +end + +-- move to strc-pag.lua + +function counters.analyze(name,counterspecification) + local cd = counterdata[name] + -- safeguard + if not cd then + return false, false, "no counter data" + end + -- section data + local sectiondata = sections.current() + if not sectiondata then + return cd, false, "not in section" + end + local references = sectiondata.references + if not references then + return cd, false, "no references" + end + local section = references.section + if not section then + return cd, false, "no section" + end + sectiondata = sections.collected[references.section] + if not sectiondata then + return cd, false, "no section data" + end + -- local preferences + local no = variables.no + if counterspecification and counterspecification.prefix == no then + return cd, false, "current spec blocks prefix" + end + -- stored preferences (not used) + if cd.prefix == no then + return cd, false, "entry blocks prefix" + end + -- sectioning + -- if sectiondata.prefix == no then + -- return false, false, "sectiondata blocks prefix" + -- end + -- final verdict + return cd, sectiondata, "okay" +end + +function sections.prefixedconverted(name,prefixspec,numberspec) + local cd, prefixdata, result = counters.analyze(name,prefixspec) + if cd then + if prefixdata then + sections.typesetnumber(prefixdata,"prefix",prefixspec or false,cd or false) + end + counters.converted(name,numberspec) + end +end + +-- + +implement { + name = "savepagedata", + actions = pages.save, + arguments = { + { + { "prefix" }, + { "separatorset" }, + { "conversionset" }, + { "conversion" }, + { "set" }, + { "segments" }, + { "connector" }, + }, + { + { "conversionset" }, + { "conversion" }, + { "starter" }, + { "stopper" }, + }, + { + { "viewerprefix" }, + { "state" }, + } + } +} + +implement { -- weird place + name = "prefixedconverted", + actions = sections.prefixedconverted, + arguments = { + "string", + { + { "prefix" }, + { "separatorset" }, + { "conversionset" }, + { "conversion" }, + { "starter" }, + { "stopper" }, + { "set" }, + { "segments" }, + { "connector" }, + }, + { + { "order" }, + { "separatorset" }, + { "conversionset" }, + { "conversion" }, + { "starter" }, + { "stopper" }, + { "segments" }, + { "type" }, + { "criterium" }, + } + } +} + +interfaces.implement { + name = "pageofinternal", + arguments = { "integer" }, + actions = helpers.pageofinternal, +} |