1 files changed, 125 insertions, 0 deletions
diff --git a/codegen/vulkan/xml/generate-core-block.rb b/codegen/vulkan/xml/generate-core-block.rb
new file mode 100644
index 00000000..3a97e300
--- /dev/null
+++ b/codegen/vulkan/xml/generate-core-block.rb
@@ -0,0 +1,125 @@
+# Copyright 2018-2021 The Khronos Group Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'nokogiri'
+
+
+renames = {}
+
+extension_name = ARGV[0]
+extension_suffix = /VK_([^_]+)_.+/.match(extension_name)[1]
+
+allowed_dependency_renames = ['']
+
+file = File.open("vk.xml")
+Nokogiri::XML(file).xpath('//extension[@name="' + extension_name + '"]').each do | extension |
+  extension_enum_offset = 1000000000 + ((extension.attribute('number').content.to_i - 1) * 1000)
+  extension.xpath('require').each do |require|
+
+    do_rename = false
+
+    if require.attribute('extension')
+      allowed_dependency_renames.each do |dependency|
+        if require.attribute('extension').content == dependency
+          do_rename = true
+        end
+      end
+    else
+      do_rename = true
+    end
+
+    if do_rename == false
+      puts "Extension interaction with " + require.attribute('extension').content + " needs addressing!"
+    else
+      core_block = "\t"*2 + require.to_s.lines[0].strip + "\n"
+      alias_block = "\t"*3 + require.to_s.lines[0].strip + "\n"
+
+      require.children.each do |element|
+        if element.node_name != 'text' && element.node_name != 'comment'
+
+          # Core Block
+          if /.+_EXTENSION_NAME/.match(element.attribute('name').content) == nil &&
+             /.+_SPEC_VERSION/.match(element.attribute('name').content) == nil
+
+            case element.node_name
+            when 'enum'
+              attributes = element.attributes
+              if element.attributes['offset']
+                attributes['value'] = element.attribute('offset').content.to_i + extension_enum_offset
+                attributes.delete('offset')
+              end
+
+              core_block << "\t"*3 + '<enum'
+              attributes.each_pair do |key, value|
+                core_block << ' ' + key + '="' + value.to_s + '"'
+              end
+              core_block << '/>' + "\n"
+            when 'type', 'command'
+              core_block << "\t"*3 + element.to_s.strip + "\n"
+            else
+              core_block << "Warning: Unknown type found!\n" << element.node_name
+            end
+          end
+
+          # Alias Block + Renames
+
+          if /.+_EXTENSION_NAME/.match(element.attribute('name').content) ||
+             /.+_SPEC_VERSION/.match(element.attribute('name').content)
+            alias_block << "\t"*4 + element.to_s.strip + "\n"
+          else
+            old_name = element.attribute('name').content
+            new_name = old_name.sub('_' + extension_suffix,'').sub(extension_suffix,'')
+            alias_block << "\t"*4 + '<alias name="' + old_name + '" value="' + new_name + '"/>' + "\n"
+            renames[old_name] = new_name
+            core_block.gsub!(old_name,new_name)
+          end
+        end
+      end
+      alias_block << "\t"*3 + require.to_s.lines[-1].strip
+      core_block << "\t"*2 + require.to_s.lines[-1].strip
+
+      puts alias_block
+      puts
+      puts core_block
+      puts
+      renames.each_pair do |old, new|
+        puts old + ' -> ' + new
+      end
+    end
+  end
+end
+
+outdata = File.read('vk.xml')
+
+renames.each_pair do |old, new|
+  outdata.gsub!(old,new)
+end
+
+File.open('vk.xml', 'w') do |out|
+  out << outdata
+end
+
+def rename_text_files(dir, renames, extension_name)
+  Dir[dir + '/*.txt'].each do |name|
+    # Skip renaming in the extension appendix, since this should preserve the old names.
+    if (name != ('../appendices/' + extension_name + '.txt'))
+      old_file = File.read(name)
+
+      new_file = old_file.clone
+      renames.each_pair do |old, new|
+        new_file.gsub!(old,new)
+      end
+
+      if (old_file != new_file)
+        File.write(name, new_file)
+      end
+    end
+  end
+  Dir[dir + '/*/'].each do |subdir|
+    rename_text_files(subdir, renames, extension_name)
+  end
+end
+
+rename_text_files('../chapters', renames, extension_name)
+rename_text_files('../appendices', renames, extension_name)