flags support

README.md

@@ -34,3 +34,11 @@ By default, xelatex-emoji expects the images to be in `images/utf8code.png`. You
 ```tex
 \newcommand{\xelatexemojipath}[1]{mycustompath/{#1}.pdf}
 ```
+
+## Development
+
+To generate the flag codes:
+
+```
+ruby bin/generate_flags.rb > xelatexemoji-flags.sty
+```

bin/generate_flags.rb

@@ -0,0 +1,71 @@
+letters = [
+  ['A', '🇦', '1f1e6'],
+  ['B', '🇧', '1f1e7'],
+  ['C', '🇨', '1f1e8'],
+  ['D', '🇩', '1f1e9'],
+  ['E', '🇪', '1f1ea'],
+  ['F', '🇫', '1f1eb'],
+  ['G', '🇬', '1f1ec'],
+  ['H', '🇭', '1f1ed'],
+  ['I', '🇮', '1f1ee'],
+  ['J', '🇯', '1f1ef'],
+  ['K', '🇰', '1f1f0'],
+  ['L', '🇱', '1f1f1'],
+  ['M', '🇲', '1f1f2'],
+  ['N', '🇳', '1f1f3'],
+  ['O', '🇴', '1f1f4'],
+  ['P', '🇵', '1f1f5'],
+  ['Q', '🇶', '1f1f6'],
+  ['R', '🇷', '1f1f7'],
+  ['S', '🇸', '1f1f8'],
+  ['T', '🇹', '1f1f9'],
+  # ['U', '🇺', ''],
+  ['V', '🇻', '1f1fb'],
+  ['W', '🇼', '1f1fc'],
+  ['X', '🇽', '1f1fd'],
+  ['Y', '🇾', '1f1fe'],
+  # ['Z', '🇿', ''],
+]
+
+output = ["\\ExplSyntaxOn"]
+
+letters.each do |letter_data|
+  output << "\\newunicodechar{#{letter_data[1]}}{ \\flags_print:n {#{letter_data[0]}} }"
+end
+
+output << %(
+{
+\\cs_new:Nn \\flags_print:n
+  {
+    \\flags_print_unicode:nn { #1 }
+  }
+}
+\\cs_new_protected:Nn \\flags_print_unicode:nn
+  {
+    \\use:c { flags_#1:n } { #2 }
+  }
+)
+
+letters.each do |letter_data|
+  partial_output = []
+  partial_output << %(
+\\cs_new_protected:Nn \\flags_#{letter_data[0]}:n
+  {
+    \\str_case:nnF {#1}
+      {
+  )
+  letters.each do |sub_letter_data|
+    partial_output << "{#{sub_letter_data[1]}}{\\xelatexemoji{#{letter_data[2]}-#{sub_letter_data[2]}}}"
+  end
+  partial_output
+  partial_output << %(
+      }
+      {}
+  }
+  )
+  output << partial_output.join("\n")
+end
+
+output << "\\ExplSyntaxOff"
+
+puts output.join("\n")