[fontloader] sync with Context as of 2016-09-23

This incorporates our patch for issue #377.

4 files changed, 275 insertions, 89 deletions

diff --git a/src/fontloader/misc/fontloader-font-ocl.lua b/src/fontloader/misc/fontloader-font-ocl.lua
index ed1be95..0e415d7 100644
--- a/src/fontloader/misc/fontloader-font-ocl.lua
+++ b/src/fontloader/misc/fontloader-font-ocl.lua
@@ -9,43 +9,77 @@ if not modules then modules = { } end modules ['font-ocl'] = {
 -- todo : user list of colors
 
 local tostring, next, format = tostring, next, string.format
+local round, max = math.round, math.round
 
 local formatters = string.formatters
+local tounicode  = fonts.mappings.tounicode
 
-local otf = fonts.handlers.otf
+local graytorgb  = attributes.colors.graytorgb
+local cmyktorgb  = attributes.colors.cmyktorgb
 
-local f_color_start = formatters["pdf:direct: %f %f %f rg"]
-local s_color_stop  = "pdf:direct:"
+local otf        = fonts.handlers.otf
+
+local f_color    = formatters["pdf:direct:%f %f %f rg"]
+local f_gray     = formatters["pdf:direct:%f g"]
+local s_black    = "pdf:direct:0 g"
 
 if context then
 
     local startactualtext = nil
     local stopactualtext  = nil
 
-    function otf.getactualtext(n)
+    function otf.getactualtext(s)
         if not startactualtext then
-            startactualtext = backends.codeinjections.startunicodetoactualtext
-            stopactualtext  = backends.codeinjections.stopunicodetoactualtext
+            startactualtext = backends.codeinjections.startunicodetoactualtextdirect
+            stopactualtext  = backends.codeinjections.stopunicodetoactualtextdirect
         end
-        return startactualtext(n), stopactualtext()
+        return startactualtext(s), stopactualtext()
     end
 
 else
 
     local tounicode = fonts.mappings.tounicode16
 
-    function otf.getactualtext(n)
-        return "/Span << /ActualText <feff" .. tounicode(n) .. "> >> BDC", "EMC"
+    function otf.getactualtext(s)
+        return
+            "/Span << /ActualText <feff" .. n .. "> >> BDC",
+            "EMC"
     end
 
 end
 
+local sharedpalettes = { }
+
+function otf.registerpalette(name,values)
+    sharedpalettes[name] = values
+    for i=1,#values do
+        local v = values[i]
+        local r, g, b
+        local s = v.s
+        if s then
+            r, g, b = graytorgb(s)
+        else
+            local c, m, y, k = v.c, v.m, v.y, v.k
+            if c or m or y or k then
+                r, g, b = cmyktorgb(c or 0,m or 0,y or 0,k or 0)
+            else
+                r, g, b = v.r, v.g, v.b
+            end
+        end
+        values[i] = {
+            max(r and round(r*255) or 0,255),
+            max(g and round(g*255) or 0,255),
+            max(b and round(b*255) or 0,255)
+        }
+    end
+end
+
 local function initializecolr(tfmdata,kind,value) -- hm, always value
     if value then
         local palettes = tfmdata.resources.colorpalettes
         if palettes then
             --
-            local palette = palettes[tonumber(value) or 1] or palettes[1] or { }
+            local palette = sharedpalettes[value] or palettes[tonumber(value) or 1] or palettes[1] or { }
             local classes = #palette
             if classes == 0 then
                 return
@@ -63,7 +97,12 @@ local function initializecolr(tfmdata,kind,value) -- hm, always value
             --
             for i=1,classes do
                 local p = palette[i]
-                colorvalues[i] = { "special", f_color_start(p[1]/255,p[2]/255,p[3]/255) }
+                local r, g, b = p[1], p[2], p[3]
+                if r == g and g == b then
+                    colorvalues[i] = { "special", f_gray(r/255) }
+                else
+                    colorvalues[i] = { "special", f_color(r/255,g/255,b/255) }
+                end
             end
             --
             local getactualtext = otf.getactualtext
@@ -73,22 +112,30 @@ local function initializecolr(tfmdata,kind,value) -- hm, always value
                 if description then
                     local colorlist = description.colors
                     if colorlist then
-                        local b, e = getactualtext(unicode)
+                        local b, e = getactualtext(tounicode(characters[unicode].unicode or 0xFFFD))
                         local w = character.width or 0
                         local s = #colorlist
-                        local n = 1
                         local t = {
-                            { "special", "pdf:direct: q " .. b }
+                            -- We need to force page first because otherwise the q's get outside
+                            -- the font switch and as a consequence the next character has no font
+                            -- set (well, it has: the preceding one). As a consequence these fonts
+                            -- are somewhat inefficient as each glyph gets the font set. It's a
+                            -- side effect of the fact that a font is handled when a character gets
+                            -- flushed.
+                            { "special", "pdf:page:q" },
+                            { "special", "pdf:raw:" .. b }
                         }
+                        local n = #t
                         for i=1,s do
                             local entry = colorlist[i]
-                            n = n + 1 t[n] = colorvalues[entry.class]
+                            n = n + 1 t[n] = colorvalues[entry.class] or s_black
                             n = n + 1 t[n] = { "char", entry.slot }
                             if s > 1 and i < s and w ~= 0 then
                                 n = n + 1 t[n] = { "right", -w }
                             end
                         end
-                        n = n + 1 t[n] = { "special", "pdf:direct:" .. e .. " Q" }
+                        n = n + 1 t[n] = { "special", "pdf:page:" .. e }
+                        n = n + 1 t[n] = { "special", "pdf:raw:Q" }
                         character.commands = t
                     end
                 end
diff --git a/src/fontloader/misc/fontloader-l-file.lua b/src/fontloader/misc/fontloader-l-file.lua
index b6822e9..f2a27ad 100644
--- a/src/fontloader/misc/fontloader-l-file.lua
+++ b/src/fontloader/misc/fontloader-l-file.lua
@@ -607,14 +607,17 @@ function file.robustname(str,strict)
     end
 end
 
-file.readdata = io.loaddata
-file.savedata = io.savedata
+local loaddata = io.loaddata
+local savedata = io.savedata
+
+file.readdata  = loaddata
+file.savedata  = savedata
 
 function file.copy(oldname,newname)
     if oldname and newname then
-        local data = io.loaddata(oldname)
+        local data = loaddata(oldname)
         if data and data ~= "" then
-            file.savedata(newname,data)
+            savedata(newname,data)
         end
     end
 end
diff --git a/src/fontloader/misc/fontloader-l-io.lua b/src/fontloader/misc/fontloader-l-io.lua
index a91d44d..2039017 100644
--- a/src/fontloader/misc/fontloader-l-io.lua
+++ b/src/fontloader/misc/fontloader-l-io.lua
@@ -7,6 +7,7 @@ if not modules then modules = { } end modules ['l-io'] = {
 }
 
 local io = io
+local open, flush, write, read = io.open, io.flush, io.write, io.read
 local byte, find, gsub, format = string.byte, string.find, string.gsub, string.format
 local concat = table.concat
 local floor = math.floor
@@ -30,15 +31,13 @@ local function readall(f)
     local size = f:seek("end")
     if size == 0 then
         return ""
-    elseif size < 1024*1024 then
-        f:seek("set",0)
+    end
+    f:seek("set",0)
+    if size < 1024*1024 then
         return f:read('*all')
     else
-        local done = f:seek("set",0)
         local step
-        if size < 1024*1024 then
-            step = 1024 * 1024
-        elseif size > 16*1024*1024 then
+        if size > 16*1024*1024 then
             step = 16*1024*1024
         else
             step = floor(size/(1024*1024)) * 1024 * 1024 / 8
@@ -58,9 +57,8 @@ end
 io.readall = readall
 
 function io.loaddata(filename,textmode) -- return nil if empty
-    local f = io.open(filename,(textmode and 'r') or 'rb')
+    local f = open(filename,(textmode and 'r') or 'rb')
     if f then
-     -- local data = f:read('*all')
         local data = readall(f)
         f:close()
         if #data > 0 then
@@ -69,8 +67,55 @@ function io.loaddata(filename,textmode) -- return nil if empty
     end
 end
 
+function io.copydata(source,target,action)
+    local f = open(source,"rb")
+    if f then
+        local g = open(target,"wb")
+        if g then
+            local size = f:seek("end")
+            if size == 0 then
+                -- empty
+            else
+                f:seek("set",0)
+                if size < 1024*1024 then
+                    local data = f:read('*all')
+                    if action then
+                        data = action(data)
+                    end
+                    if data then
+                        g:write(data)
+                    end
+                else
+                    local step
+                    if size > 16*1024*1024 then
+                        step = 16*1024*1024
+                    else
+                        step = floor(size/(1024*1024)) * 1024 * 1024 / 8
+                    end
+                    while true do
+                        local data = f:read(step)
+                        if data then
+                            if action then
+                                data = action(data)
+                            end
+                            if data then
+                                g:write(data)
+                            end
+                        else
+                            break
+                        end
+                    end
+                end
+            end
+            g:close()
+        end
+        f:close()
+        flush()
+    end
+end
+
 function io.savedata(filename,data,joiner)
-    local f = io.open(filename,"wb")
+    local f = open(filename,"wb")
     if f then
         if type(data) == "table" then
             f:write(concat(data,joiner or ""))
@@ -80,7 +125,7 @@ function io.savedata(filename,data,joiner)
             f:write(data or "")
         end
         f:close()
-        io.flush()
+        flush()
         return true
     else
         return false
@@ -90,7 +135,7 @@ end
 -- we can also chunk this one if needed: io.lines(filename,chunksize,"*l")
 
 function io.loadlines(filename,n) -- return nil if empty
-    local f = io.open(filename,'r')
+    local f = open(filename,'r')
     if not f then
         -- no file
     elseif n then
@@ -118,7 +163,7 @@ function io.loadlines(filename,n) -- return nil if empty
 end
 
 function io.loadchunk(filename,n)
-    local f = io.open(filename,'rb')
+    local f = open(filename,'rb')
     if f then
         local data = f:read(n or 1024)
         f:close()
@@ -129,7 +174,7 @@ function io.loadchunk(filename,n)
 end
 
 function io.exists(filename)
-    local f = io.open(filename)
+    local f = open(filename)
     if f == nil then
         return false
     else
@@ -139,7 +184,7 @@ function io.exists(filename)
 end
 
 function io.size(filename)
-    local f = io.open(filename)
+    local f = open(filename)
     if f == nil then
         return 0
     else
@@ -149,11 +194,11 @@ function io.size(filename)
     end
 end
 
-function io.noflines(f)
+local function noflines(f)
     if type(f) == "string" then
-        local f = io.open(filename)
+        local f = open(filename)
         if f then
-            local n = f and io.noflines(f) or 0
+            local n = f and noflines(f) or 0
             f:close()
             return n
         else
@@ -169,6 +214,10 @@ function io.noflines(f)
     end
 end
 
+io.noflines = noflines
+
+-- inlined is faster
+
 local nextchar = {
     [ 4] = function(f)
         return f:read(1,1,1,1)
@@ -250,16 +299,16 @@ end
 
 function io.ask(question,default,options)
     while true do
-        io.write(question)
+        write(question)
         if options then
-            io.write(format(" [%s]",concat(options,"|")))
+            write(format(" [%s]",concat(options,"|")))
         end
         if default then
-            io.write(format(" [%s]",default))
+            write(format(" [%s]",default))
         end
-        io.write(format(" "))
-        io.flush()
-        local answer = io.read()
+        write(format(" "))
+        flush()
+        local answer = read()
         answer = gsub(answer,"^%s*(.*)%s*$","%1")
         if answer == "" and default then
             return default
diff --git a/src/fontloader/runtime/fontloader-reference.lua b/src/fontloader/runtime/fontloader-reference.lua
index 7738118..c0b4596 100644
--- a/src/fontloader/runtime/fontloader-reference.lua
+++ b/src/fontloader/runtime/fontloader-reference.lua
@@ -1,6 +1,6 @@
 -- merged file : c:/data/develop/context/sources/luatex-fonts-merged.lua
 -- parent file : c:/data/develop/context/sources/luatex-fonts.lua
--- merge date  : 09/12/16 18:27:00
+-- merge date  : 09/23/16 10:13:56
 
 do -- begin closure to overcome local limits and interference
 
@@ -2018,6 +2018,7 @@ if not modules then modules={} end modules ['l-io']={
   license="see context related readme files"
 }
 local io=io
+local open,flush,write,read=io.open,io.flush,io.write,io.read
 local byte,find,gsub,format=string.byte,string.find,string.gsub,string.format
 local concat=table.concat
 local floor=math.floor
@@ -2034,15 +2035,13 @@ local function readall(f)
   local size=f:seek("end")
   if size==0 then
     return ""
-  elseif size<1024*1024 then
-    f:seek("set",0)
+  end
+  f:seek("set",0)
+  if size<1024*1024 then
     return f:read('*all')
   else
-    local done=f:seek("set",0)
     local step
-    if size<1024*1024 then
-      step=1024*1024
-    elseif size>16*1024*1024 then
+    if size>16*1024*1024 then
       step=16*1024*1024
     else
       step=floor(size/(1024*1024))*1024*1024/8
@@ -2060,7 +2059,7 @@ local function readall(f)
 end
 io.readall=readall
 function io.loaddata(filename,textmode) 
-  local f=io.open(filename,(textmode and 'r') or 'rb')
+  local f=open(filename,(textmode and 'r') or 'rb')
   if f then
     local data=readall(f)
     f:close()
@@ -2069,8 +2068,53 @@ function io.loaddata(filename,textmode)
     end
   end
 end
+function io.copydata(source,target,action)
+  local f=open(source,"rb")
+  if f then
+    local g=open(target,"wb")
+    if g then
+      local size=f:seek("end")
+      if size==0 then
+      else
+        f:seek("set",0)
+        if size<1024*1024 then
+          local data=f:read('*all')
+          if action then
+            data=action(data)
+          end
+          if data then
+            g:write(data)
+          end
+        else
+          local step
+          if size>16*1024*1024 then
+            step=16*1024*1024
+          else
+            step=floor(size/(1024*1024))*1024*1024/8
+          end
+          while true do
+            local data=f:read(step)
+            if data then
+              if action then
+                data=action(data)
+              end
+              if data then
+                g:write(data)
+              end
+            else
+              break
+            end
+          end
+        end
+      end
+      g:close()
+    end
+    f:close()
+    flush()
+  end
+end
 function io.savedata(filename,data,joiner)
-  local f=io.open(filename,"wb")
+  local f=open(filename,"wb")
   if f then
     if type(data)=="table" then
       f:write(concat(data,joiner or ""))
@@ -2080,14 +2124,14 @@ function io.savedata(filename,data,joiner)
       f:write(data or "")
     end
     f:close()
-    io.flush()
+    flush()
     return true
   else
     return false
   end
 end
 function io.loadlines(filename,n) 
-  local f=io.open(filename,'r')
+  local f=open(filename,'r')
   if not f then
   elseif n then
     local lines={}
@@ -2113,7 +2157,7 @@ function io.loadlines(filename,n)
   end
 end
 function io.loadchunk(filename,n)
-  local f=io.open(filename,'rb')
+  local f=open(filename,'rb')
   if f then
     local data=f:read(n or 1024)
     f:close()
@@ -2123,7 +2167,7 @@ function io.loadchunk(filename,n)
   end
 end
 function io.exists(filename)
-  local f=io.open(filename)
+  local f=open(filename)
   if f==nil then
     return false
   else
@@ -2132,7 +2176,7 @@ function io.exists(filename)
   end
 end
 function io.size(filename)
-  local f=io.open(filename)
+  local f=open(filename)
   if f==nil then
     return 0
   else
@@ -2141,11 +2185,11 @@ function io.size(filename)
     return s
   end
 end
-function io.noflines(f)
+local function noflines(f)
   if type(f)=="string" then
-    local f=io.open(filename)
+    local f=open(filename)
     if f then
-      local n=f and io.noflines(f) or 0
+      local n=f and noflines(f) or 0
       f:close()
       return n
     else
@@ -2160,6 +2204,7 @@ function io.noflines(f)
     return n
   end
 end
+io.noflines=noflines
 local nextchar={
   [ 4]=function(f)
     return f:read(1,1,1,1)
@@ -2237,16 +2282,16 @@ function io.bytes(f,n)
 end
 function io.ask(question,default,options)
   while true do
-    io.write(question)
+    write(question)
     if options then
-      io.write(format(" [%s]",concat(options,"|")))
+      write(format(" [%s]",concat(options,"|")))
     end
     if default then
-      io.write(format(" [%s]",default))
+      write(format(" [%s]",default))
     end
-    io.write(format(" "))
-    io.flush()
-    local answer=io.read()
+    write(format(" "))
+    flush()
+    local answer=read()
     answer=gsub(answer,"^%s*(.*)%s*$","%1")
     if answer=="" and default then
       return default
@@ -2655,13 +2700,15 @@ function file.robustname(str,strict)
     end
   end
 end
-file.readdata=io.loaddata
-file.savedata=io.savedata
+local loaddata=io.loaddata
+local savedata=io.savedata
+file.readdata=loaddata
+file.savedata=savedata
 function file.copy(oldname,newname)
   if oldname and newname then
-    local data=io.loaddata(oldname)
+    local data=loaddata(oldname)
     if data and data~="" then
-      file.savedata(newname,data)
+      savedata(newname,data)
     end
   end
 end
@@ -20391,10 +20438,12 @@ function otf.dataset(tfmdata,font)
     }
     rs[language]=rl
     local sequences=tfmdata.resources.sequences
-    for s=1,#sequences do
-      local v=enabled and initialize(sequences[s],script,language,enabled,autoscript,autolanguage)
-      if v then
-        rl[#rl+1]=v
+    if sequences then
+      for s=1,#sequences do
+        local v=enabled and initialize(sequences[s],script,language,enabled,autoscript,autolanguage)
+        if v then
+          rl[#rl+1]=v
+        end
       end
     end
   end
@@ -23221,31 +23270,62 @@ if not modules then modules={} end modules ['font-ocl']={
   license="see context related readme files"
 }
 local tostring,next,format=tostring,next,string.format
+local round,max=math.round,math.round
 local formatters=string.formatters
+local tounicode=fonts.mappings.tounicode
+local graytorgb=attributes.colors.graytorgb
+local cmyktorgb=attributes.colors.cmyktorgb
 local otf=fonts.handlers.otf
-local f_color_start=formatters["pdf:direct: %f %f %f rg"]
-local s_color_stop="pdf:direct:"
+local f_color=formatters["pdf:direct:%f %f %f rg"]
+local f_gray=formatters["pdf:direct:%f g"]
+local s_black="pdf:direct:0 g"
 if context then
   local startactualtext=nil
   local stopactualtext=nil
-  function otf.getactualtext(n)
+  function otf.getactualtext(s)
     if not startactualtext then
-      startactualtext=backends.codeinjections.startunicodetoactualtext
-      stopactualtext=backends.codeinjections.stopunicodetoactualtext
+      startactualtext=backends.codeinjections.startunicodetoactualtextdirect
+      stopactualtext=backends.codeinjections.stopunicodetoactualtextdirect
     end
-    return startactualtext(n),stopactualtext()
+    return startactualtext(s),stopactualtext()
   end
 else
   local tounicode=fonts.mappings.tounicode16
-  function otf.getactualtext(n)
-    return "/Span << /ActualText <feff"..tounicode(n).."> >> BDC","EMC"
+  function otf.getactualtext(s)
+    return
+      "/Span << /ActualText <feff"..n.."> >> BDC",
+      "EMC"
+  end
+end
+local sharedpalettes={}
+function otf.registerpalette(name,values)
+  sharedpalettes[name]=values
+  for i=1,#values do
+    local v=values[i]
+    local r,g,b
+    local s=v.s
+    if s then
+      r,g,b=graytorgb(s)
+    else
+      local c,m,y,k=v.c,v.m,v.y,v.k
+      if c or m or y or k then
+        r,g,b=cmyktorgb(c or 0,m or 0,y or 0,k or 0)
+      else
+        r,g,b=v.r,v.g,v.b
+      end
+    end
+    values[i]={
+      max(r and round(r*255) or 0,255),
+      max(g and round(g*255) or 0,255),
+      max(b and round(b*255) or 0,255)
+    }
   end
 end
 local function initializecolr(tfmdata,kind,value) 
   if value then
     local palettes=tfmdata.resources.colorpalettes
     if palettes then
-      local palette=palettes[tonumber(value) or 1] or palettes[1] or {}
+      local palette=sharedpalettes[value] or palettes[tonumber(value) or 1] or palettes[1] or {}
       local classes=#palette
       if classes==0 then
         return
@@ -23260,7 +23340,12 @@ local function initializecolr(tfmdata,kind,value)
       }
       for i=1,classes do
         local p=palette[i]
-        colorvalues[i]={ "special",f_color_start(p[1]/255,p[2]/255,p[3]/255) }
+        local r,g,b=p[1],p[2],p[3]
+        if r==g and g==b then
+          colorvalues[i]={ "special",f_gray(r/255) }
+        else
+          colorvalues[i]={ "special",f_color(r/255,g/255,b/255) }
+        end
       end
       local getactualtext=otf.getactualtext
       for unicode,character in next,characters do
@@ -23268,22 +23353,24 @@ local function initializecolr(tfmdata,kind,value)
         if description then
           local colorlist=description.colors
           if colorlist then
-            local b,e=getactualtext(unicode)
+            local b,e=getactualtext(tounicode(characters[unicode].unicode or 0xFFFD))
             local w=character.width or 0
             local s=#colorlist
-            local n=1
             local t={
-              { "special","pdf:direct: q "..b }
+              { "special","pdf:page:q" },
+              { "special","pdf:raw:"..b }
             }
+            local n=#t
             for i=1,s do
               local entry=colorlist[i]
-              n=n+1 t[n]=colorvalues[entry.class]
+              n=n+1 t[n]=colorvalues[entry.class] or s_black
               n=n+1 t[n]={ "char",entry.slot }
               if s>1 and i<s and w~=0 then
                 n=n+1 t[n]={ "right",-w }
               end
             end
-            n=n+1 t[n]={ "special","pdf:direct:"..e.." Q" }
+            n=n+1 t[n]={ "special","pdf:page:"..e }
+            n=n+1 t[n]={ "special","pdf:raw:Q" }
             character.commands=t
           end
         end