diff options
Diffstat (limited to 'tex/context/base/lpdf-ini.lua')
| -rw-r--r-- | tex/context/base/lpdf-ini.lua | 986 |
1 files changed, 688 insertions, 298 deletions
diff --git a/tex/context/base/lpdf-ini.lua b/tex/context/base/lpdf-ini.lua index 23fe6c177..834f845c5 100644 --- a/tex/context/base/lpdf-ini.lua +++ b/tex/context/base/lpdf-ini.lua @@ -6,98 +6,308 @@ if not modules then modules = { } end modules ['lpdf-ini'] = { license = "see context related readme files" } +-- beware of "too many locals" here + local setmetatable, getmetatable, type, next, tostring, tonumber, rawset = setmetatable, getmetatable, type, next, tostring, tonumber, rawset local char, byte, format, gsub, concat, match, sub, gmatch = string.char, string.byte, string.format, string.gsub, table.concat, string.match, string.sub, string.gmatch -local utfchar, utfvalues = utf.char, utf.values -local sind, cosd, floor = math.sind, math.cosd, math.floor +local utfchar, utfbyte, utfvalues = utf.char, utf.byte, utf.values +local sind, cosd, floor, max, min = math.sind, math.cosd, math.floor, math.max, math.min local lpegmatch, P, C, R, S, Cc, Cs = lpeg.match, lpeg.P, lpeg.C, lpeg.R, lpeg.S, lpeg.Cc, lpeg.Cs local formatters = string.formatters +local isboolean = string.is_boolean + +local report_objects = logs.reporter("backend","objects") +local report_finalizing = logs.reporter("backend","finalizing") +local report_blocked = logs.reporter("backend","blocked") + +local implement = interfaces.implement +local two_strings = interfaces.strings[2] + +-- In ConTeXt MkIV we use utf8 exclusively so all strings get mapped onto a hex +-- encoded utf16 string type between <>. We could probably save some bytes by using +-- strings between () but then we end up with escaped ()\ too. + +-- gethpos : used +-- getpos : used +-- getvpos : used +-- +-- getmatrix : used +-- hasmatrix : used +-- +-- mapfile : used in font-ctx.lua +-- mapline : used in font-ctx.lua +-- +-- maxobjnum : not used +-- obj : used +-- immediateobj : used +-- objtype : not used +-- pageref : used +-- print : can be used +-- refobj : used +-- registerannot : not to be used +-- reserveobj : used + +-- pdf.catalog : used +-- pdf.info : used +-- pdf.trailer : used +-- pdf.names : not to be used + +-- pdf.setinfo : used +-- pdf.setcatalog : used +-- pdf.setnames : not to be used +-- pdf.settrailer : used + +-- pdf.getinfo : used +-- pdf.getcatalog : used +-- pdf.getnames : not to be used +-- pdf.gettrailer : used + +local pdf = pdf +local factor = number.dimenfactors.bp + +if pdf.setinfo then + -- table.setmetatablenewindex(pdf,function(t,k,v) + -- report_blocked("'pdf.%s' is not supported",k) + -- end) + -- the getters are harmless +end + +if not pdf.setinfo then + function pdf.setinfo (s) pdf.info = s end + function pdf.setcatalog(s) pdf.catalog = s end + function pdf.setnames (s) pdf.names = s end + function pdf.settrailer(s) pdf.trailer = s end +end -local pdfreserveobject = pdf.reserveobj -local pdfimmediateobject = pdf.immediateobj -local pdfdeferredobject = pdf.obj -local pdfreferenceobject = pdf.refobj +if not pdf.getpos then + function pdf.getpos () return pdf.h, pdf.v end + function pdf.gethpos () return pdf.h end + function pdf.getvpos () return pdf.v end + function pdf.hasmatrix() return false end + function pdf.getmatrix() return 1, 0, 0, 1, 0, 0 end +end + +if not pdf.setpageresources then + function pdf.setpageresources (s) pdf.pageresources = s end + function pdf.setpageattributes (s) pdf.pageattributes = s end + function pdf.setpagesattributes(s) pdf.pagesattributes = s end +end + +local pdfsetinfo = pdf.setinfo +local pdfsetcatalog = pdf.setcatalog +local pdfsetnames = pdf.setnames +local pdfsettrailer = pdf.settrailer + +local pdfsetpageresources = pdf.setpageresources +local pdfsetpageattributes = pdf.setpageattributes +local pdfsetpagesattributes = pdf.setpagesattributes + +local pdfgetpos = pdf.getpos +local pdfgethpos = pdf.gethpos +local pdfgetvpos = pdf.getvpos +local pdfgetmatrix = pdf.getmatrix +local pdfhasmatrix = pdf.hasmatrix + +local pdfreserveobject = pdf.reserveobj +local pdfimmediateobject = pdf.immediateobj +local pdfdeferredobject = pdf.obj +local pdfreferenceobject = pdf.refobj + +-- function pdf.setinfo () report_blocked("'pdf.%s' is not supported","setinfo") end -- use lpdf.addtoinfo etc +-- function pdf.setcatalog () report_blocked("'pdf.%s' is not supported","setcatalog") end +-- function pdf.setnames () report_blocked("'pdf.%s' is not supported","setnames") end +-- function pdf.settrailer () report_blocked("'pdf.%s' is not supported","settrailer") end +-- function pdf.setpageresources () report_blocked("'pdf.%s' is not supported","setpageresources") end +-- function pdf.setpageattributes () report_blocked("'pdf.%s' is not supported","setpageattributes") end +-- function pdf.setpagesattributes() report_blocked("'pdf.%s' is not supported","setpagesattributes") end +-- function pdf.registerannot () report_blocked("'pdf.%s' is not supported","registerannot") end + +local function pdfdisablecommand(command) + pdf[command] = function() report_blocked("'pdf.%s' is not supported",command) end +end + +pdfdisablecommand("setinfo") +pdfdisablecommand("setcatalog") +pdfdisablecommand("setnames") +pdfdisablecommand("settrailer") +pdfdisablecommand("setpageresources") +pdfdisablecommand("setpageattributes") +pdfdisablecommand("setpagesattributes") +pdfdisablecommand("registerannot") local trace_finalizers = false trackers.register("backend.finalizers", function(v) trace_finalizers = v end) local trace_resources = false trackers.register("backend.resources", function(v) trace_resources = v end) local trace_objects = false trackers.register("backend.objects", function(v) trace_objects = v end) local trace_detail = false trackers.register("backend.detail", function(v) trace_detail = v end) -local report_objects = logs.reporter("backend","objects") -local report_finalizing = logs.reporter("backend","finalizing") - -local backends = backends - -backends.pdf = backends.pdf or { +local backends = backends +local pdfbackend = { comment = "backend for directly generating pdf output", nodeinjections = { }, codeinjections = { }, registrations = { }, tables = { }, } +backends.pdf = pdfbackend +lpdf = lpdf or { } +local lpdf = lpdf + +local codeinjections = pdfbackend.codeinjections +local nodeinjections = pdfbackend.nodeinjections + +codeinjections.getpos = pdfgetpos lpdf.getpos = pdfgetpos +codeinjections.gethpos = pdfgethpos lpdf.gethpos = pdfgethpos +codeinjections.getvpos = pdfgetvpos lpdf.getvpos = pdfgetvpos +codeinjections.hasmatrix = pdfhasmatrix lpdf.hasmatrix = pdfhasmatrix +codeinjections.getmatrix = pdfgetmatrix lpdf.getmatrix = pdfgetmatrix + +function lpdf.transform(llx,lly,urx,ury) + if pdfhasmatrix() then + local sx, rx, ry, sy = pdfgetmatrix() + local w, h = urx - llx, ury - lly + return llx, lly, llx + sy*w - ry*h, lly + sx*h - rx*w + else + return llx, lly, urx, ury + end +end -lpdf = lpdf or { } -local lpdf = lpdf +-- function lpdf.rectangle(width,height,depth) +-- local h, v = pdfgetpos() +-- local llx, lly, urx, ury +-- if pdfhasmatrix() then +-- local sx, rx, ry, sy = pdfgetmatrix() +-- llx = 0 +-- lly = -depth +-- -- llx = ry * depth +-- -- lly = -sx * depth +-- urx = sy * width - ry * height +-- ury = sx * height - rx * width +-- else +-- llx = 0 +-- lly = -depth +-- urx = width +-- ury = height +-- return (h+llx)*factor, (v+lly)*factor, (h+urx)*factor, (v+ury)*factor +-- end +-- end -local function tosixteen(str) -- an lpeg might be faster (no table) - if not str or str == "" then - return "<feff>" -- not () as we want an indication that it's unicode +function lpdf.rectangle(width,height,depth) + local h, v = pdfgetpos() + if pdfhasmatrix() then + local sx, rx, ry, sy = pdfgetmatrix() + -- return (h+ry*depth)*factor, (v-sx*depth)*factor, (h+sy*width-ry*height)*factor, (v+sx*height-rx*width)*factor + return h *factor, (v- depth)*factor, (h+sy*width-ry*height)*factor, (v+sx*height-rx*width)*factor else - local r, n = { "<feff" }, 1 - for b in utfvalues(str) do - n = n + 1 - if b < 0x10000 then - r[n] = format("%04x",b) - else - -- r[n] = format("%04x%04x",b/1024+0xD800,b%1024+0xDC00) - r[n] = format("%04x%04x",floor(b/1024),b%1024+0xDC00) - end - end - n = n + 1 - r[n] = ">" - return concat(r) + return h *factor, (v- depth)*factor, (h+ width )*factor, (v+ height )*factor end end -lpdf.tosixteen = tosixteen - --- lpeg is some 5 times faster than gsub (in test) on escaping +-- we could use a hash of predefined unicodes --- local escapes = { --- ["\\"] = "\\\\", --- ["/"] = "\\/", ["#"] = "\\#", --- ["<"] = "\\<", [">"] = "\\>", --- ["["] = "\\[", ["]"] = "\\]", --- ["("] = "\\(", [")"] = "\\)", --- } --- --- local escaped = Cs(Cc("(") * (S("\\/#<>[]()")/escapes + P(1))^0 * Cc(")")) --- --- local function toeight(str) +-- local function tosixteen(str) -- an lpeg might be faster (no table) -- if not str or str == "" then --- return "()" +-- return "<feff>" -- not () as we want an indication that it's unicode -- else --- return lpegmatch(escaped,str) +-- local r, n = { "<feff" }, 1 +-- for b in utfvalues(str) do +-- n = n + 1 +-- if b < 0x10000 then +-- r[n] = format("%04x",b) +-- else +-- -- r[n] = format("%04x%04x",b/1024+0xD800,b%1024+0xDC00) +-- r[n] = format("%04x%04x",floor(b/1024),b%1024+0xDC00) --bit32.rshift(b,10) +-- end +-- end +-- n = n + 1 +-- r[n] = ">" +-- return concat(r) -- end -- end --- --- -- no need for escaping .. just use unicode instead --- \0 \t \n \r \f <space> ( ) [ ] { } / % +local cache = table.setmetatableindex(function(t,k) -- can be made weak + local v = utfbyte(k) + if v < 0x10000 then + v = format("%04x",v) + else + -- v = format("%04x%04x",v/1024+0xD800,v%1024+0xDC00) + v = format("%04x%04x",floor(v/1024),v%1024+0xDC00) + end + t[k] = v + return v +end) + +local escaped = Cs(Cc("(") * (S("\\()")/"\\%0" + P(1))^0 * Cc(")")) +local unified = Cs(Cc("<feff") * (lpeg.patterns.utf8character/cache)^1 * Cc(">")) -local function toeight(str) - return "(" .. str .. ")" +local function tosixteen(str) -- an lpeg might be faster (no table) + if not str or str == "" then + return "<feff>" -- not () as we want an indication that it's unicode + else + return lpegmatch(unified,str) + end +end + +local more = 0 + +local pattern = C(4) / function(s) -- needs checking ! + local now = tonumber(s,16) + if more > 0 then + now = (more-0xD800)*0x400 + (now-0xDC00) + 0x10000 -- the 0x10000 smells wrong + more = 0 + return utfchar(now) + elseif now >= 0xD800 and now <= 0xDBFF then + more = now + return "" -- else the c's end up in the stream + else + return utfchar(now) + end end -lpdf.toeight = toeight +local pattern = P(true) / function() more = 0 end * Cs(pattern^0) + +local function fromsixteen(str) + if not str or str == "" then + return "" + else + return lpegmatch(pattern,str) + end +end + +local toregime = regimes.toregime +local fromregime = regimes.fromregime + +local function topdfdoc(str,default) + if not str or str == "" then + return "" + else + return lpegmatch(escaped,toregime("pdfdoc",str,default)) -- could be combined if needed + end +end ---~ local escaped = lpeg.Cs((lpeg.S("\0\t\n\r\f ()[]{}/%")/function(s) return format("#%02X",byte(s)) end + lpeg.P(1))^0) +local function frompdfdoc(str) + if not str or str == "" then + return "" + else + return fromregime("pdfdoc",str) + end +end ---~ local function cleaned(str) ---~ return (str and str ~= "" and lpegmatch(escaped,str)) or "" ---~ end +if not toregime then topdfdoc = function(s) return s end end +if not fromregime then frompdfdoc = function(s) return s end end ---~ lpdf.cleaned = cleaned -- not public yet +local function toeight(str) + if not str or str == "" then + return "()" + else + return lpegmatch(escaped,str) + end +end + +lpdf.tosixteen = tosixteen +lpdf.toeight = toeight +lpdf.topdfdoc = topdfdoc +lpdf.fromsixteen = fromsixteen +lpdf.frompdfdoc = frompdfdoc local function merge_t(a,b) local t = { } @@ -106,34 +316,44 @@ local function merge_t(a,b) return setmetatable(t,getmetatable(a)) end +local f_key_null = formatters["/%s null"] local f_key_value = formatters["/%s %s"] local f_key_dictionary = formatters["/%s << % t >>"] local f_dictionary = formatters["<< % t >>"] local f_key_array = formatters["/%s [ % t ]"] local f_array = formatters["[ % t ]"] +local f_key_number = formatters["/%s %F"] +local f_tonumber = formatters["%F"] + +-- local f_key_value = formatters["/%s %s"] +-- local f_key_dictionary = formatters["/%s <<% t>>"] +-- local f_dictionary = formatters["<<% t>>"] +-- local f_key_array = formatters["/%s [% t]"] +-- local f_array = formatters["[% t]"] local tostring_a, tostring_d tostring_d = function(t,contentonly,key) - if not next(t) then - if contentonly then - return "" - else - return "<< >>" - end - else + if next(t) then local r, rn = { }, 0 for k, v in next, t do rn = rn + 1 local tv = type(v) if tv == "string" then r[rn] = f_key_value(k,toeight(v)) - elseif tv == "unicode" then - r[rn] = f_key_value(k,tosixteen(v)) + elseif tv == "number" then + r[rn] = f_key_number(k,v) + -- elseif tv == "unicode" then -- can't happen + -- r[rn] = f_key_value(k,tosixteen(v)) elseif tv == "table" then local mv = getmetatable(v) if mv and mv.__lpdftype then - r[rn] = f_key_value(k,tostring(v)) + -- if v == t then + -- report_objects("ignoring circular reference in dirctionary") + -- r[rn] = f_key_null(k) + -- else + r[rn] = f_key_value(k,tostring(v)) + -- end elseif v[1] then r[rn] = f_key_value(k,tostring_a(v)) else @@ -150,31 +370,36 @@ tostring_d = function(t,contentonly,key) else return f_dictionary(r) end + elseif contentonly then + return "" + else + return "<< >>" end end tostring_a = function(t,contentonly,key) local tn = #t - if tn == 0 then - if contentonly then - return "" - else - return "[ ]" - end - else + if tn ~= 0 then local r = { } for k=1,tn do local v = t[k] local tv = type(v) if tv == "string" then r[k] = toeight(v) - elseif tv == "unicode" then - r[k] = tosixteen(v) + elseif tv == "number" then + r[k] = f_tonumber(v) + -- elseif tv == "unicode" then + -- r[k] = tosixteen(v) elseif tv == "table" then local mv = getmetatable(v) local mt = mv and mv.__lpdftype if mt then - r[k] = tostring(v) + -- if v == t then + -- report_objects("ignoring circular reference in array") + -- r[k] = "null" + -- else + r[k] = tostring(v) + -- end elseif v[1] then r[k] = tostring_a(v) else @@ -191,40 +416,47 @@ tostring_a = function(t,contentonly,key) else return f_array(r) end + elseif contentonly then + return "" + else + return "[ ]" end end -local tostring_x = function(t) return concat(t, " ") end -local tostring_s = function(t) return toeight(t[1]) end -local tostring_u = function(t) return tosixteen(t[1]) end -local tostring_n = function(t) return tostring(t[1]) end -- tostring not needed -local tostring_c = function(t) return t[1] end -- already prefixed (hashed) -local tostring_z = function() return "null" end -local tostring_t = function() return "true" end -local tostring_f = function() return "false" end -local tostring_r = function(t) local n = t[1] return n and n > 0 and (n .. " 0 R") or "NULL" end +local tostring_x = function(t) return concat(t," ") end +local tostring_s = function(t) return toeight(t[1]) end +local tostring_p = function(t) return topdfdoc(t[1],t[2]) end +local tostring_u = function(t) return tosixteen(t[1]) end +----- tostring_n = function(t) return tostring(t[1]) end -- tostring not needed +local tostring_n = function(t) return f_tonumber(t[1]) end -- tostring not needed +local tostring_c = function(t) return t[1] end -- already prefixed (hashed) +local tostring_z = function() return "null" end +local tostring_t = function() return "true" end +local tostring_f = function() return "false" end +local tostring_r = function(t) local n = t[1] return n and n > 0 and (n .. " 0 R") or "null" end local tostring_v = function(t) local s = t[1] if type(s) == "table" then - return concat(s,"") + return concat(s) else return s end end -local function value_x(t) return t end -- the call is experimental -local function value_s(t,key) return t[1] end -- the call is experimental -local function value_u(t,key) return t[1] end -- the call is experimental -local function value_n(t,key) return t[1] end -- the call is experimental -local function value_c(t) return sub(t[1],2) end -- the call is experimental -local function value_d(t) return tostring_d(t,true) end -- the call is experimental -local function value_a(t) return tostring_a(t,true) end -- the call is experimental -local function value_z() return nil end -- the call is experimental -local function value_t(t) return t.value or true end -- the call is experimental -local function value_f(t) return t.value or false end -- the call is experimental -local function value_r() return t[1] or 0 end -- the call is experimental -- NULL -local function value_v() return t[1] end -- the call is experimental +local function value_x(t) return t end +local function value_s(t) return t[1] end +local function value_p(t) return t[1] end +local function value_u(t) return t[1] end +local function value_n(t) return t[1] end +local function value_c(t) return sub(t[1],2) end +local function value_d(t) return tostring_d(t,true) end +local function value_a(t) return tostring_a(t,true) end +local function value_z() return nil end +local function value_t(t) return t.value or true end +local function value_f(t) return t.value or false end +local function value_r() return t[1] or 0 end -- null +local function value_v() return t[1] end local function add_x(t,k,v) rawset(t,k,tostring(v)) end @@ -233,6 +465,7 @@ local mt_d = { __lpdftype = "dictionary", __tostring = tostring_d, __call = valu local mt_a = { __lpdftype = "array", __tostring = tostring_a, __call = value_a } local mt_u = { __lpdftype = "unicode", __tostring = tostring_u, __call = value_u } local mt_s = { __lpdftype = "string", __tostring = tostring_s, __call = value_s } +local mt_p = { __lpdftype = "docstring", __tostring = tostring_p, __call = value_p } local mt_n = { __lpdftype = "number", __tostring = tostring_n, __call = value_n } local mt_c = { __lpdftype = "constant", __tostring = tostring_c, __call = value_c } local mt_z = { __lpdftype = "null", __tostring = tostring_z, __call = value_z } @@ -266,8 +499,12 @@ local function pdfstring(str,default) return setmetatable({ str or default or "" },mt_s) end +local function pdfdocstring(str,default,defaultchar) + return setmetatable({ str or default or "", defaultchar or " " },mt_p) +end + local function pdfunicode(str,default) - return setmetatable({ str or default or "" },mt_u) + return setmetatable({ str or default or "" },mt_u) -- could be a string end local cache = { } -- can be weak @@ -325,17 +562,33 @@ local function pdfboolean(b,default) end end -local function pdfreference(r) - return setmetatable({ r or 0 },mt_r) +local r_zero = setmetatable({ 0 },mt_r) + +local function pdfreference(r) -- maybe make a weak table + if r and r ~= 0 then + return setmetatable({ r },mt_r) + else + return r_zero + end end +local v_zero = setmetatable({ 0 },mt_v) +local v_empty = setmetatable({ "" },mt_v) + local function pdfverbose(t) -- maybe check for type - return setmetatable({ t or "" },mt_v) + if t == 0 then + return v_zero + elseif t == "" then + return v_empty + else + return setmetatable({ t },mt_v) + end end lpdf.stream = pdfstream -- THIS WILL PROBABLY CHANGE lpdf.dictionary = pdfdictionary lpdf.array = pdfarray +lpdf.docstring = pdfdocstring lpdf.string = pdfstring lpdf.unicode = pdfunicode lpdf.number = pdfnumber @@ -345,37 +598,19 @@ lpdf.boolean = pdfboolean lpdf.reference = pdfreference lpdf.verbose = pdfverbose --- n = pdf.obj(n, str) --- n = pdf.obj(n, "file", filename) --- n = pdf.obj(n, "stream", streamtext, attrtext) --- n = pdf.obj(n, "streamfile", filename, attrtext) - --- we only use immediate objects - --- todo: tracing - local names, cache = { }, { } function lpdf.reserveobject(name) - if name == "annot" then - -- catch misuse - return pdfreserveobject("annot") - else - local r = pdfreserveobject() - if name then - names[name] = r - if trace_objects then - report_objects("reserving number %a under name %a",r,name) - end - elseif trace_objects then - report_objects("reserving number %a",r) + local r = pdfreserveobject() -- we don't support "annot" + if name then + names[name] = r + if trace_objects then + report_objects("reserving number %a under name %a",r,name) end - return r + elseif trace_objects then + report_objects("reserving number %a",r) end -end - -function lpdf.reserveannotation() - return pdfreserveobject("annot") + return r end -- lpdf.immediateobject = pdfimmediateobject @@ -383,11 +618,29 @@ end -- lpdf.object = pdfdeferredobject -- lpdf.referenceobject = pdfreferenceobject -lpdf.pagereference = pdf.pageref or tex.pdfpageref -lpdf.registerannotation = pdf.registerannot +local pagereference = pdf.pageref -- tex.pdfpageref is obsolete +local nofpages = 0 + +function lpdf.pagereference(n) + if nofpages == 0 then + nofpages = structures.pages.nofpages + if nofpages == 0 then + nofpages = 1 + end + end + if n > nofpages then + return pagereference(nofpages) -- or 1, could be configureable + else + return pagereference(n) + end +end -function lpdf.delayedobject(data) -- we will get rid of this one - local n = pdfdeferredobject(data) +function lpdf.delayedobject(data,n) + if n then + pdfdeferredobject(n,data) + else + n = pdfdeferredobject(data) + end pdfreferenceobject(n) return n end @@ -484,60 +737,10 @@ function lpdf.shareobjectreference(content) end end ---~ local d = lpdf.dictionary() ---~ local e = lpdf.dictionary { ["e"] = "abc", x = lpdf.dictionary { ["f"] = "ABC" } } ---~ local f = lpdf.dictionary { ["f"] = "ABC" } ---~ local a = lpdf.array { lpdf.array { lpdf.string("xxx") } } - ---~ print(a) ---~ os.exit() - ---~ d["test"] = lpdf.string ("test") ---~ d["more"] = "more" ---~ d["bool"] = true ---~ d["numb"] = 1234 ---~ d["oeps"] = lpdf.dictionary { ["hans"] = "ton" } ---~ d["whow"] = lpdf.array { lpdf.string("ton") } - ---~ a[#a+1] = lpdf.string("xxx") ---~ a[#a+1] = lpdf.string("yyy") - ---~ d.what = a - ---~ print(e) - ---~ local d = lpdf.dictionary() ---~ d["abcd"] = { 1, 2, 3, "test" } ---~ print(d) ---~ print(d()) - ---~ local d = lpdf.array() ---~ d[#d+1] = 1 ---~ d[#d+1] = 2 ---~ d[#d+1] = 3 ---~ d[#d+1] = "test" ---~ print(d) - ---~ local d = lpdf.array() ---~ d[#d+1] = { 1, 2, 3, "test" } ---~ print(d) - ---~ local d = lpdf.array() ---~ d[#d+1] = { a=1, b=2, c=3, d="test" } ---~ print(d) - ---~ local s = lpdf.constant("xx") ---~ print(s) -- fails somehow ---~ print(s()) -- fails somehow - ---~ local s = lpdf.boolean(false) ---~ s.value = true ---~ print(s) ---~ print(s()) - -- three priority levels, default=2 -local pagefinalizers, documentfinalizers = { { }, { }, { } }, { { }, { }, { } } +local pagefinalizers = { { }, { }, { } } +local documentfinalizers = { { }, { }, { } } local pageresources, pageattributes, pagesattributes @@ -550,9 +753,9 @@ end resetpageproperties() local function setpageproperties() - pdf.pageresources = pageresources () - pdf.pageattributes = pageattributes () - pdf.pagesattributes = pagesattributes() + pdfsetpageresources (pageresources ()) + pdfsetpageattributes (pageattributes ()) + pdfsetpagesattributes(pagesattributes()) end local function addtopageresources (k,v) pageresources [k] = v end @@ -606,8 +809,8 @@ end lpdf.registerpagefinalizer = registerpagefinalizer lpdf.registerdocumentfinalizer = registerdocumentfinalizer -function lpdf.finalizepage() - if not environment.initex then +function lpdf.finalizepage(shipout) + if shipout and not environment.initex then -- resetpageproperties() -- maybe better before run(pagefinalizers,"page") setpageproperties() @@ -625,152 +828,252 @@ function lpdf.finalizedocument() end end -backends.pdf.codeinjections.finalizepage = lpdf.finalizepage -- will go when we have hook +-- codeinjections.finalizepage = lpdf.finalizepage -- no longer triggered at the tex end ---~ callbacks.register("finish_pdfpage", lpdf.finalizepage) -callbacks.register("finish_pdffile", lpdf.finalizedocument) +if not callbacks.register("finish_pdfpage", lpdf.finalizepage) then --- some minimal tracing, handy for checking the order + local find_tail = nodes.tail + local latelua_node = nodes.pool.latelua -local function trace_set(what,key) - if trace_resources then - report_finalizing("setting key %a in %a",key,what) + function nodeinjections.finalizepage(head) + local t = find_tail(head.list) + if t then + local n = latelua_node("lpdf.finalizepage(true)") -- last in the shipout + t.next = n + n.prev = t + end + return head, true end + + nodes.tasks.appendaction("shipouts","normalizers","backends.pdf.nodeinjections.finalizepage") + end -local function trace_flush(what) - if trace_resources then - report_finalizing("flushing %a",what) + +callbacks.register("finish_pdffile", lpdf.finalizedocument) + + +do + + -- some minimal tracing, handy for checking the order + + local function trace_set(what,key) + if trace_resources then + report_finalizing("setting key %a in %a",key,what) + end end -end -lpdf.protectresources = true + local function trace_flush(what) + if trace_resources then + report_finalizing("flushing %a",what) + end + end -local catalog = pdfdictionary { Type = pdfconstant("Catalog") } -- nicer, but when we assign we nil the Type -local info = pdfdictionary { Type = pdfconstant("Info") } -- nicer, but when we assign we nil the Type -local names = pdfdictionary { Type = pdfconstant("Names") } -- nicer, but when we assign we nil the Type + lpdf.protectresources = true -local function flushcatalog() if not environment.initex then trace_flush("catalog") catalog.Type = nil pdf.catalog = catalog() end end -local function flushinfo () if not environment.initex then trace_flush("info") info .Type = nil pdf.info = info () end end -local function flushnames () if not environment.initex then trace_flush("names") names .Type = nil pdf.names = names () end end + local catalog = pdfdictionary { Type = pdfconstant("Catalog") } -- nicer, but when we assign we nil the Type + local info = pdfdictionary { Type = pdfconstant("Info") } -- nicer, but when we assign we nil the Type + ----- names = pdfdictionary { Type = pdfconstant("Names") } -- nicer, but when we assign we nil the Type -function lpdf.addtocatalog(k,v) if not (lpdf.protectresources and catalog[k]) then trace_set("catalog",k) catalog[k] = v end end -function lpdf.addtoinfo (k,v) if not (lpdf.protectresources and info [k]) then trace_set("info", k) info [k] = v end end -function lpdf.addtonames (k,v) if not (lpdf.protectresources and names [k]) then trace_set("names", k) names [k] = v end end + local function flushcatalog() + if not environment.initex then + trace_flush("catalog") + catalog.Type = nil + pdfsetcatalog(catalog()) + end + end -local dummy = pdfreserveobject() -- else bug in hvmd due so some internal luatex conflict + local function flushinfo() + if not environment.initex then + trace_flush("info") + info.Type = nil + pdfsetinfo(info()) + end + end --- Some day I will implement a proper minimalized resource management. + -- local function flushnames() + -- if not environment.initex then + -- trace_flush("names") + -- names.Type = nil + -- pdfsetnames(names()) + -- end + -- end + + function lpdf.addtocatalog(k,v) + if not (lpdf.protectresources and catalog[k]) then + trace_set("catalog",k) + catalog[k] = v + end + end -local r_extgstates, d_extgstates = pdfreserveobject(), pdfdictionary() local p_extgstates = pdfreference(r_extgstates) -local r_colorspaces, d_colorspaces = pdfreserveobject(), pdfdictionary() local p_colorspaces = pdfreference(r_colorspaces) -local r_patterns, d_patterns = pdfreserveobject(), pdfdictionary() local p_patterns = pdfreference(r_patterns) -local r_shades, d_shades = pdfreserveobject(), pdfdictionary() local p_shades = pdfreference(r_shades) + function lpdf.addtoinfo(k,v) + if not (lpdf.protectresources and info[k]) then + trace_set("info",k) + info[k] = v + end + end -local function checkextgstates () if next(d_extgstates ) then addtopageresources("ExtGState", p_extgstates ) end end -local function checkcolorspaces() if next(d_colorspaces) then addtopageresources("ColorSpace",p_colorspaces) end end -local function checkpatterns () if next(d_patterns ) then addtopageresources("Pattern", p_patterns ) end end -local function checkshades () if next(d_shades ) then addtopageresources("Shading", p_shades ) end end + -- local function lpdf.addtonames(k,v) + -- if not (lpdf.protectresources and names[k]) then + -- trace_set("names",k) + -- names[k] = v + -- end + -- end -local function flushextgstates () if next(d_extgstates ) then trace_flush("extgstates") pdfimmediateobject(r_extgstates, tostring(d_extgstates )) end end -local function flushcolorspaces() if next(d_colorspaces) then trace_flush("colorspaces") pdfimmediateobject(r_colorspaces,tostring(d_colorspaces)) end end -local function flushpatterns () if next(d_patterns ) then trace_flush("patterns") pdfimmediateobject(r_patterns, tostring(d_patterns )) end end -local function flushshades () if next(d_shades ) then trace_flush("shades") pdfimmediateobject(r_shades, tostring(d_shades )) end end + local names = pdfdictionary { + -- Type = pdfconstant("Names") + } -function lpdf.collectedresources() - local ExtGState = next(d_extgstates ) and p_extgstates - local ColorSpace = next(d_colorspaces) and p_colorspaces - local Pattern = next(d_patterns ) and p_patterns - local Shading = next(d_shades ) and p_shades - if ExtGState or ColorSpace or Pattern or Shading then - local collected = pdfdictionary { - ExtGState = ExtGState, - ColorSpace = ColorSpace, - Pattern = Pattern, - Shading = Shading, - -- ProcSet = pdfarray { pdfconstant("PDF") }, - } - return collected() - else - return "" + local function flushnames() + if next(names) and not environment.initex then + names.Type = pdfconstant("Names") + trace_flush("names") + lpdf.addtocatalog("Names",pdfreference(pdfimmediateobject(tostring(names)))) + end + end + + function lpdf.addtonames(k,v) + if not (lpdf.protectresources and names[k]) then + trace_set("names", k) + names [k] = v + end + end + + local r_extgstates, d_extgstates = pdfreserveobject(), pdfdictionary() local p_extgstates = pdfreference(r_extgstates) + local r_colorspaces, d_colorspaces = pdfreserveobject(), pdfdictionary() local p_colorspaces = pdfreference(r_colorspaces) + local r_patterns, d_patterns = pdfreserveobject(), pdfdictionary() local p_patterns = pdfreference(r_patterns) + local r_shades, d_shades = pdfreserveobject(), pdfdictionary() local p_shades = pdfreference(r_shades) + + local function checkextgstates () if next(d_extgstates ) then addtopageresources("ExtGState", p_extgstates ) end end + local function checkcolorspaces() if next(d_colorspaces) then addtopageresources("ColorSpace",p_colorspaces) end end + local function checkpatterns () if next(d_patterns ) then addtopageresources("Pattern", p_patterns ) end end + local function checkshades () if next(d_shades ) then addtopageresources("Shading", p_shades ) end end + + local function flushextgstates () if next(d_extgstates ) then trace_flush("extgstates") pdfimmediateobject(r_extgstates, tostring(d_extgstates )) end end + local function flushcolorspaces() if next(d_colorspaces) then trace_flush("colorspaces") pdfimmediateobject(r_colorspaces,tostring(d_colorspaces)) end end + local function flushpatterns () if next(d_patterns ) then trace_flush("patterns") pdfimmediateobject(r_patterns, tostring(d_patterns )) end end + local function flushshades () if next(d_shades ) then trace_flush("shades") pdfimmediateobject(r_shades, tostring(d_shades )) end end + + function lpdf.collectedresources() + local ExtGState = next(d_extgstates ) and p_extgstates + local ColorSpace = next(d_colorspaces) and p_colorspaces + local Pattern = next(d_patterns ) and p_patterns + local Shading = next(d_shades ) and p_shades + if ExtGState or ColorSpace or Pattern or Shading then + local collected = pdfdictionary { + ExtGState = ExtGState, + ColorSpace = ColorSpace, + Pattern = Pattern, + Shading = Shading, + -- ProcSet = pdfarray { pdfconstant("PDF") }, + } + return collected() + else + return "" + end end -end -function lpdf.adddocumentextgstate (k,v) d_extgstates [k] = v end -function lpdf.adddocumentcolorspace(k,v) d_colorspaces[k] = v end -function lpdf.adddocumentpattern (k,v) d_patterns [k] = v end -function lpdf.adddocumentshade (k,v) d_shades [k] = v end + function lpdf.adddocumentextgstate (k,v) d_extgstates [k] = v end + function lpdf.adddocumentcolorspace(k,v) d_colorspaces[k] = v end + function lpdf.adddocumentpattern (k,v) d_patterns [k] = v end + function lpdf.adddocumentshade (k,v) d_shades [k] = v end -registerdocumentfinalizer(flushextgstates,3,"extended graphic states") -registerdocumentfinalizer(flushcolorspaces,3,"color spaces") -registerdocumentfinalizer(flushpatterns,3,"patterns") -registerdocumentfinalizer(flushshades,3,"shades") + registerdocumentfinalizer(flushextgstates,3,"extended graphic states") + registerdocumentfinalizer(flushcolorspaces,3,"color spaces") + registerdocumentfinalizer(flushpatterns,3,"patterns") + registerdocumentfinalizer(flushshades,3,"shades") -registerdocumentfinalizer(flushcatalog,3,"catalog") -registerdocumentfinalizer(flushinfo,3,"info") -registerdocumentfinalizer(flushnames,3,"names") -- before catalog + registerdocumentfinalizer(flushnames,3,"names") -- before catalog + registerdocumentfinalizer(flushcatalog,3,"catalog") + registerdocumentfinalizer(flushinfo,3,"info") -registerpagefinalizer(checkextgstates,3,"extended graphic states") -registerpagefinalizer(checkcolorspaces,3,"color spaces") -registerpagefinalizer(checkpatterns,3,"patterns") -registerpagefinalizer(checkshades,3,"shades") + registerpagefinalizer(checkextgstates,3,"extended graphic states") + registerpagefinalizer(checkcolorspaces,3,"color spaces") + registerpagefinalizer(checkpatterns,3,"patterns") + registerpagefinalizer(checkshades,3,"shades") + +end -- in strc-bkm: lpdf.registerdocumentfinalizer(function() structures.bookmarks.place() end,1) function lpdf.rotationcm(a) local s, c = sind(a), cosd(a) - return format("%0.6f %0.6f %0.6f %0.6f 0 0 cm",c,s,-s,c) + return format("%0.6F %0.6F %0.6F %0.6F 0 0 cm",c,s,-s,c) end -- ! -> universaltime -local timestamp = os.date("%Y-%m-%dT%X") .. os.timezone(true) +do -function lpdf.timestamp() - return timestamp -end + local timestamp = os.date("%Y-%m-%dT%X") .. os.timezone(true) -function lpdf.pdftimestamp(str) - local Y, M, D, h, m, s, Zs, Zh, Zm = match(str,"^(%d%d%d%d)%-(%d%d)%-(%d%d)T(%d%d):(%d%d):(%d%d)([%+%-])(%d%d):(%d%d)$") - return Y and format("D:%s%s%s%s%s%s%s%s'%s'",Y,M,D,h,m,s,Zs,Zh,Zm) -end + function lpdf.timestamp() + return timestamp + end + + function lpdf.pdftimestamp(str) + local Y, M, D, h, m, s, Zs, Zh, Zm = match(str,"^(%d%d%d%d)%-(%d%d)%-(%d%d)T(%d%d):(%d%d):(%d%d)([%+%-])(%d%d):(%d%d)$") + return Y and format("D:%s%s%s%s%s%s%s%s'%s'",Y,M,D,h,m,s,Zs,Zh,Zm) + end + + function lpdf.id() + return format("%s.%s",tex.jobname,timestamp) + end -function lpdf.id() - return format("%s.%s",tex.jobname,timestamp) end +-- return nil is nicer in test prints + function lpdf.checkedkey(t,key,variant) local pn = t and t[key] - if pn then + if pn ~= nil then local tn = type(pn) if tn == variant then if variant == "string" then - return pn ~= "" and pn or nil + if pn ~= "" then + return pn + end elseif variant == "table" then - return next(pn) and pn or nil + if next(pn) then + return pn + end else return pn end - elseif tn == "string" and variant == "number" then - return tonumber(pn) + elseif tn == "string" then + if variant == "number" then + return tonumber(pn) + elseif variant == "boolean" then + return isboolean(pn,nil,true) + end end end + -- return nil end function lpdf.checkedvalue(value,variant) -- code not shared - if value then + if value ~= nil then local tv = type(value) if tv == variant then if variant == "string" then - return value ~= "" and value + if value ~= "" then + return value + end elseif variant == "table" then - return next(value) and value + if next(value) then + return value + end else return value end - elseif tv == "string" and variant == "number" then - return tonumber(value) + elseif tv == "string" then + if variant == "number" then + return tonumber(value) + elseif variant == "boolean" then + return isboolean(value,nil,true) + end end end + -- return nil end function lpdf.limited(n,min,max,default) @@ -790,34 +1093,121 @@ function lpdf.limited(n,min,max,default) end end --- lpdf.addtoinfo("ConTeXt.Version", tex.contextversiontoks) +-- lpdf.addtoinfo("ConTeXt.Version", environment.version) -- lpdf.addtoinfo("ConTeXt.Time", os.date("%Y.%m.%d %H:%M")) -- :%S -- lpdf.addtoinfo("ConTeXt.Jobname", environment.jobname) -- lpdf.addtoinfo("ConTeXt.Url", "www.pragma-ade.com") +-- lpdf.addtoinfo("ConTeXt.Support", "contextgarden.net") -if not pdfreferenceobject then - - local delayed = { } +-- if not pdfreferenceobject then +-- +-- local delayed = { } +-- +-- local function flush() +-- local n = 0 +-- for k,v in next, delayed do +-- pdfimmediateobject(k,v) +-- n = n + 1 +-- end +-- if trace_objects then +-- report_objects("%s objects flushed",n) +-- end +-- delayed = { } +-- end +-- +-- lpdf.registerdocumentfinalizer(flush,3,"objects") -- so we need a final flush too +-- lpdf.registerpagefinalizer (flush,3,"objects") -- somehow this lags behind .. I need to look into that some day +-- +-- function lpdf.delayedobject(data) +-- local n = pdfreserveobject() +-- delayed[n] = data +-- return n +-- end +-- +-- end - local function flush() - local n = 0 - for k,v in next, delayed do - pdfimmediateobject(k,v) - n = n + 1 - end - if trace_objects then - report_objects("%s objects flushed",n) +-- setmetatable(pdf, { +-- __index = function(t,k) +-- if k == "info" then return pdf.getinfo() +-- elseif k == "catalog" then return pdf.getcatalog() +-- elseif k == "names" then return pdf.getnames() +-- elseif k == "trailer" then return pdf.gettrailer() +-- elseif k == "pageattribute" then return pdf.getpageattribute() +-- elseif k == "pageattributes" then return pdf.getpageattributes() +-- elseif k == "pageresources" then return pdf.getpageresources() +-- elseif +-- return nil +-- end +-- end, +-- __newindex = function(t,k,v) +-- if k == "info" then return pdf.setinfo(v) +-- elseif k == "catalog" then return pdf.setcatalog(v) +-- elseif k == "names" then return pdf.setnames(v) +-- elseif k == "trailer" then return pdf.settrailer(v) +-- elseif k == "pageattribute" then return pdf.setpageattribute(v) +-- elseif k == "pageattributes" then return pdf.setpageattributes(v) +-- elseif k == "pageresources" then return pdf.setpageresources(v) +-- else +-- rawset(t,k,v) +-- end +-- end, +-- }) + + +-- The next variant of ActualText is what Taco and I could come up with +-- eventually. As of September 2013 Acrobat copies okay, Sumatra copies a +-- question mark, pdftotext injects an extra space and Okular adds a +-- newline plus space. + +-- return formatters["BT /Span << /ActualText (CONTEXT) >> BDC [<feff>] TJ % t EMC ET"](code) + +do + + local f_actual_text_one = formatters["BT /Span << /ActualText <feff%04x> >> BDC [<feff>] TJ %s EMC ET"] + local f_actual_text_two = formatters["BT /Span << /ActualText <feff%04x%04x> >> BDC [<feff>] TJ %s EMC ET"] + local f_actual_text = formatters["/Span <</ActualText %s >> BDC"] + + local context = context + local pdfdirect = nodes.pool.pdfdirect + + function codeinjections.unicodetoactualtext(unicode,pdfcode) + if unicode < 0x10000 then + return f_actual_text_one(unicode,pdfcode) + else + return f_actual_text_two(unicode/1024+0xD800,unicode%1024+0xDC00,pdfcode) end - delayed = { } end - lpdf.registerdocumentfinalizer(flush,3,"objects") -- so we need a final flush too - lpdf.registerpagefinalizer (flush,3,"objects") -- somehow this lags behind .. I need to look into that some day + implement { + name = "startactualtext", + arguments = "string", + actions = function(str) + context(pdfdirect(f_actual_text(tosixteen(str)))) + end + } - function lpdf.delayedobject(data) - local n = pdfreserveobject() - delayed[n] = data - return n - end + implement { + name = "stopactualtext", + actions = function() + context(pdfdirect("EMC")) + end + } end + +-- interface + +local lpdfverbose = lpdf.verbose + +implement { name = "lpdf_collectedresources", actions = { lpdf.collectedresources, context } } +implement { name = "lpdf_addtocatalog", arguments = two_strings, actions = lpdf.addtocatalog } +implement { name = "lpdf_addtoinfo", arguments = two_strings, actions = lpdf.addtoinfo } +implement { name = "lpdf_addtonames", arguments = two_strings, actions = lpdf.addtonames } +implement { name = "lpdf_addpageattributes", arguments = two_strings, actions = lpdf.addtopageattributes } +implement { name = "lpdf_addpagesattributes", arguments = two_strings, actions = lpdf.addtopagesattributes } +implement { name = "lpdf_addpageresources", arguments = two_strings, actions = lpdf.addtopageresources } +implement { name = "lpdf_adddocumentextgstate", arguments = two_strings, actions = function(a,b) lpdf.adddocumentextgstate (a,lpdfverbose(b)) end } +implement { name = "lpdf_adddocumentcolorspace", arguments = two_strings, actions = function(a,b) lpdf.adddocumentcolorspace(a,lpdfverbose(b)) end } +implement { name = "lpdf_adddocumentpattern", arguments = two_strings, actions = function(a,b) lpdf.adddocumentpattern (a,lpdfverbose(b)) end } +implement { name = "lpdf_adddocumentshade", arguments = two_strings, actions = function(a,b) lpdf.adddocumentshade (a,lpdfverbose(b)) end } + |