# frozen_string_literal: true

# sample-utf8.rb: UTF-8 test file for Ruby.
# Free sample from 99helpers.com/file-types/rb
# Run: ruby sample-utf8.rb
# If any line below looks garbled (é, ’), something read this file in the
# wrong encoding. Ruby itself reads source files as UTF-8 by default.

# 1. No "# encoding: utf-8" comment needed: UTF-8 is the default source
#    encoding (since Ruby 2.0). __ENCODING__ shows what this file uses.
puts "Source encoding: #{__ENCODING__}"

# 2. Make output UTF-8 even where the console expects something else.
$stdout.set_encoding(Encoding::UTF_8)

GREETINGS = {
  "Dutch" => "Goedemorgen, café-eigenaar",
  "German" => "Grüß Gott, Straße",
  "French" => "Ça va, Zoë ? Très bien",
  "Greek" => "Καλημέρα",
  "Russian" => "Здравствуйте",
  "Arabic" => "مرحبا",
  "Hebrew" => "שלום",
  "Hindi" => "नमस्ते",
  "Japanese" => "こんにちは",
  "Chinese" => "你好",
  "Korean" => "안녕하세요",
  "Symbols" => "€ £ ¥ ₹ ≤ ≥ ∞ ✓",
  "Emoji" => "👋🌍💎"
}.freeze

# 3. length counts characters; bytesize counts the bytes on disk.
GREETINGS.each do |language, text|
  puts format("%-9s %s  (%d characters, %d bytes)", language, text, text.length, text.bytesize)
end

# 4. Case mapping covers all of Unicode: "ß" becomes "SS".
puts "Straße".upcase

# 5. Normalisation: "é" as one code point, or "e" plus a combining accent.
composed = "\u00e9"
decomposed = "e\u0301"
puts composed == decomposed, composed == decomposed.unicode_normalize(:nfc)

# 6. Method and variable names can be non-ASCII, though few projects do it.
def grüße(name) = "Grüße, #{name}!"
puts grüße("Ada")