CTAN sync 202304040301

4 files changed, 55 insertions, 28 deletions

diff --git a/macros/luatex/latex/scikgtex/README b/macros/luatex/latex/scikgtex/README.md
index e754496c6f..36dc96ca8e 100644
--- a/macros/luatex/latex/scikgtex/README
+++ b/macros/luatex/latex/scikgtex/README.md
@@ -9,11 +9,10 @@ DESCRIPTION
     SciKGTeX will enrich the document by adding the marked contributions to PDF metadata
     in a structured XMP format which can be picked up by Search Engines and
     Knowledge Graphs.
-    More information on how to use the package can be found here: 
-    https://github.com/Christof93/SciKGTeX#readme
+    For more information on how to use the package consult documentation SciKGTeX.pdf.
 
 VERSION
-    2.1.1 (13.11.2022)
+    2.2.0 (03.04.2023)
 
 LICENSE
     This work is published under MIT License. https://opensource.org/licenses/MIT
diff --git a/macros/luatex/latex/scikgtex/scikgtex.lua b/macros/luatex/latex/scikgtex/scikgtex.lua
index 94bd0c1f40..8703d66666 100644
--- a/macros/luatex/latex/scikgtex/scikgtex.lua
+++ b/macros/luatex/latex/scikgtex/scikgtex.lua
@@ -21,8 +21,7 @@ XMP.lines = {}
 XMP.namespaces = {}
 XMP.property_ns = {}
 XMP.XMP_TOP = [[<x:xmpmeta xmlns:x="adobe:ns:meta/">]]
-XMP.XMP_BOTTOM = [[</rdf:RDF>
-</x:xmpmeta>]]
+XMP.XMP_BOTTOM = [[</x:xmpmeta>]]
 XMP.PACKET_END = [[<?xpacket end="r"?>]]
 
 local UUID = {}
@@ -379,11 +378,15 @@ function SciKGTeX:warn_unused_command()
     end
 end
 
-function SciKGTeX:print_entity(uri, label)
-    if label ~= "" then
-        tex.print(string.format('\\href{%s}{%s}',uri , label))
-    else
+function SciKGTeX:print_entity(uri, label, hyperrefloaded)
+    if label ~= "" and hyperrefloaded then
+        tex.print(string.format('\\href{%s}{%s}', uri , label))
+    elseif label ~= "" then
+        tex.print(label)
+    elseif hyperrefloaded then
         tex.print(string.format('\\url{%s}',uri))
+    else
+        tex.print(uri)
     end
 end
 
@@ -595,7 +598,13 @@ function XMP:generate_xmp_string(lb_char)
         end
         for i, cb_id in pairs(sorted_contributions) do
             contribution = self.paper.contributions[cb_id]
-            self:add_line('    <orkg:hasResearchContribution>')
+            if i==1 then
+                if #sorted_contributions > 1 then
+                    self:add_line('    <orkg:hasResearchContribution rdf:parseType="Collection">')
+                else
+                    self:add_line('    <orkg:hasResearchContribution>')
+                end
+            end
             self:add_line(
                 '      <orkg:ResearchContribution rdf:about="https://www.orkg.org/orkg/paper/%s">', 
                 self.paper.id .. "/" ..contribution.id
@@ -611,10 +620,13 @@ function XMP:generate_xmp_string(lb_char)
                 )
             end
             self:add_line('      </orkg:ResearchContribution>')
-            self:add_line('    </orkg:hasResearchContribution>')
+            if i == #sorted_contributions then
+                self:add_line('    </orkg:hasResearchContribution>')
+            end
         end
         self:add_line('  </rdf:Description>')
     end
+    self:add_line('</rdf:RDF>')
     self:add_line(self.XMP_BOTTOM)
     self:add_line(self.PACKET_END)
 
@@ -622,11 +634,11 @@ function XMP:generate_xmp_string(lb_char)
 
 end
 
-function XMP:attach_metadata_pdfstream()
+function XMP:attach_metadata_pdfstream(metadata_type)
     local xmp_string = self:generate_xmp_string()
     local new_pdf = pdf.obj {
         type = 'stream',
-        attr = '/Type/Metadata /Subtype/XML',
+        attr = '/Type /'..metadata_type..' /Subtype /XML',
         immediate = true,
         compresslevel = 0,
         string = xmp_string,
@@ -654,12 +666,14 @@ end, 'at_end')
 --  Writing metadata packets
 luatexbase.add_to_callback('finish_pdffile', function()
     if XMP.paper then
-        local metadata_obj = XMP:attach_metadata_pdfstream()
+        if CONFORM_TO_PDFA then
+            catalog_key='SciKGMetadata'
+        else
+            catalog_key='Metadata'
+        end
+        local metadata_obj = XMP:attach_metadata_pdfstream(catalog_key)
         local catalog = pdf.getcatalog() or ''
-        pdf.setcatalog(catalog..string.format('/Metadata %s 0 R', metadata_obj))
-        --if SciKGTeX.PRODUCE_XMP_FILE then
-        --    XMP:dump_metadata()
-        --end
+        pdf.setcatalog(catalog..string.format('/%s %s 0 R', catalog_key, metadata_obj))
     end
 end, 'finish')
 
diff --git a/macros/luatex/latex/scikgtex/scikgtex.pdf b/macros/luatex/latex/scikgtex/scikgtex.pdf
new file mode 100644
index 0000000000..ec91d95a48
--- /dev/null
+++ b/macros/luatex/latex/scikgtex/scikgtex.pdf
diff --git a/macros/luatex/latex/scikgtex/scikgtex.sty b/macros/luatex/latex/scikgtex/scikgtex.sty
index 9f94c11a1b..6e605e6a66 100644
--- a/macros/luatex/latex/scikgtex/scikgtex.sty
+++ b/macros/luatex/latex/scikgtex/scikgtex.sty
@@ -16,10 +16,10 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}
 \ProvidesPackage{scikgtex}[2022/11/13 v2.1.1]
-
+%
 \def\useignorespacesandallpars#1\ignorespaces\fi{%
 #1\fi\ignorespacesandallpars}
-
+%
 \makeatletter
 \def\ignorespacesandallpars{%
   \@ifnextchar\par
@@ -27,15 +27,23 @@
     {}%
 }
 \makeatother
-
+%
 \RequirePackage{suffix}
-\RequirePackage{hyperref}
-
+%% init variable which checks if hyperref is loaded.
+\newcommand{\hyperrefloaded}{null}%
+%
 \errorcontextlines=5
-
-\directlua {
-  SciKGTeX = require('scikgtex')
+%
+\directlua {%
+  SciKGTeX = require('scikgtex')%
+  CONFORM_TO_PDFA = false%
+}
+\DeclareOption{compatibility}{
+  \directlua {% 
+    CONFORM_TO_PDFA = true%
+  }
 }
+\ProcessOptions\relax
 
 \newcommand{\addmetaproperty}[2][]{%
   \directlua{%
@@ -102,12 +110,18 @@
   }%
   \ignorespaces
 }%
-
+%
 \newcommand{\uri}[2]{%
+  \ifcsname href\endcsname%
+    \renewcommand{\hyperrefloaded}{true}%
+  \else%
+    \renewcommand{\hyperrefloaded}{false}%
+  \fi%
+%
   \directlua{%
     local label = "\luaescapestring{\unexpanded{#2}}"%
     local uri = "\luaescapestring{\unexpanded{#1}}"%
-    SciKGTeX:print_entity(uri, label)%
+    SciKGTeX:print_entity(uri, label, \hyperrefloaded)%
   }%
 }%