Assert.Equal(new[] { 2, 8 }, entity.Indices);
Assert.Equal("sushi", entity.Text);
}
+
+ [Fact]
+ public void ExtractEmojiEntities_Test()
+ {
+ var entity = TweetExtractor.ExtractEmojiEntities("star ✨").Single();
+
+ Assert.Equal(new[] { 5, 6 }, entity.Indices);
+ Assert.Equal("✨", entity.Text);
+ Assert.Equal("https://twemoji.maxcdn.com/2/72x72/2728.png", entity.Url);
+ }
+
+ [Fact]
+ public void ExtractEmojiEntities_SurrogatePairTest()
+ {
+ var entity = TweetExtractor.ExtractEmojiEntities("𠮷野家 🍚").Single();
+
+ // 「𠮷」「🍚」は UTF-16 でそれぞれ 2byte になるがインデックスはコードポイント単位で数えなければならない
+ Assert.Equal(new[] { 4, 5 }, entity.Indices);
+ Assert.Equal("🍚", entity.Text);
+ Assert.Equal("https://twemoji.maxcdn.com/2/72x72/1f35a.png", entity.Url);
+ }
+
+ [Fact]
+ public void ExtractEmojiEntities_VariationSelector_TextStyleTest()
+ {
+ // 異字体セレクタを使用して明示的にテキストスタイルで表示させている文字
+ var origText = "©\uFE0E"; // U+00A9 + U+FE0E (text style)
+ var entities = TweetExtractor.ExtractEmojiEntities(origText);
+
+ Assert.Empty(entities);
+ }
+
+ [Fact]
+ public void ExtractEmojiEntities_VariationSelector_EmojiStyleTest()
+ {
+ // 異字体セレクタを使用して明示的に絵文字スタイルで表示させている文字
+ var origText = "©\uFE0F"; // U+00A9 + U+FE0F (emoji style)
+ var entity = TweetExtractor.ExtractEmojiEntities(origText).Single();
+
+ Assert.Equal(new[] { 0, 2 }, entity.Indices);
+ Assert.Equal("©", entity.Text);
+ Assert.Equal("https://twemoji.maxcdn.com/2/72x72/a9.png", entity.Url);
+ }
+
+ [Fact]
+ public void ExtractEmojiEntities_CombiningCharacterTest()
+ {
+ var origText = "#⃣"; // U+0023 U+20E3 (合字)
+ var entity = TweetExtractor.ExtractEmojiEntities(origText).Single();
+
+ Assert.Equal(new[] { 0, 2 }, entity.Indices);
+ Assert.Equal("#⃣", entity.Text);
+ Assert.Equal("https://twemoji.maxcdn.com/2/72x72/23-20e3.png", entity.Url);
+ }
+
+ [Fact]
+ public void ExtractEmojiEntities_Unicode10Test()
+ {
+ // Unicode 10.0/Emoji 5.0 で追加された絵文字
+ var origText = "🦒"; // U+1F992 (GIRAFFE)
+ var entity = TweetExtractor.ExtractEmojiEntities(origText).Single();
+
+ Assert.Equal(new[] { 0, 1 }, entity.Indices);
+ Assert.Equal("🦒", entity.Text);
+ Assert.Equal("https://twemoji.maxcdn.com/2/72x72/1f992.png", entity.Url);
+ }
+
+ [Fact]
+ public void ExtractEmojiEntities_EmojiModifiers_CombiningTest()
+ {
+ // Emoji modifiers を使用した合字 (リガチャー)
+ var origText = "👦\U0001F3FF"; // U+1F466 (BOY) + U+1F3FF (EMOJI MODIFIER FITZPATRICK TYPE-6)
+ var entity = TweetExtractor.ExtractEmojiEntities(origText).Single();
+
+ Assert.Equal(new[] { 0, 2 }, entity.Indices);
+ Assert.Equal("👦\U0001F3FF", entity.Text);
+ Assert.Equal("https://twemoji.maxcdn.com/2/72x72/1f466-1f3ff.png", entity.Url);
+ }
+
+ [Fact]
+ public void ExtractEmojiEntities_EmojiModifiers_SingleTest()
+ {
+ // Emoji modifiers は単体でも絵文字として表示される
+ var origText = "\U0001F3FF"; // U+1F3FB (EMOJI MODIFIER FITZPATRICK TYPE-6)
+ var entity = TweetExtractor.ExtractEmojiEntities(origText).Single();
+
+ Assert.Equal(new[] { 0, 1 }, entity.Indices);
+ Assert.Equal("\U0001F3FF", entity.Text);
+ Assert.Equal("https://twemoji.maxcdn.com/2/72x72/1f3ff.png", entity.Url);
+ }
+
+ [Fact]
+ public void ExtractEmojiEntities_EmojiZWJSequenceTest()
+ {
+ // 複数の絵文字を U+200D (ZERO WIDTH JOINER) で繋げて表現する絵文字
+ var origText = "👨\u200D🎨"; // U+1F468 (MAN) + U+200D + U+1F3A8 (ARTIST PALETTE)
+ var entity = TweetExtractor.ExtractEmojiEntities(origText).Single();
+
+ Assert.Equal(new[] { 0, 3 }, entity.Indices);
+ Assert.Equal("👨\u200D🎨", entity.Text);
+ Assert.Equal("https://twemoji.maxcdn.com/2/72x72/1f468-200d-1f3a8.png", entity.Url);
+ }
+
+ [Fact]
+ public void ExtractEmojiEntities_EmojiZWJSequenceWithVariationSelectorTest()
+ {
+ // 複数の絵文字を U+200D (ZERO WIDTH JOINER) で繋げて表現 + 異字体セレクタ U+FE0F を含む絵文字
+ // この場合は URL 生成時に異字体セレクタ U+FE0F を除去しない
+ var origText = "🏃\u200D♀\uFE0F"; // U+1F3C3 (RUNNER) + U+200D + U+2640 (FEMARE SIGN) + U+FE0F
+ var entity = TweetExtractor.ExtractEmojiEntities(origText).Single();
+
+ Assert.Equal(new[] { 0, 4 }, entity.Indices);
+ Assert.Equal("🏃\u200D♀\uFE0F", entity.Text);
+ Assert.Equal("https://twemoji.maxcdn.com/2/72x72/1f3c3-200d-2640-fe0f.png", entity.Url);
+ }
}
}
// OpenTween - Client of Twitter
// Copyright (c) 2015 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
+// Copyright (c) 2015 takke (@takke) <http://takke.jp/>
// All rights reserved.
//
// This file is part of OpenTween.
{
public static class TweetExtractor
{
+ public static readonly Regex EmojiPattern = new Regex(@"\ud83d[\udc68-\udc69](?:\ud83c[\udffb-\udfff])?\u200d(?:\u2695\ufe0f|\u2696\ufe0f|\u2708\ufe0f|\ud83c[\udf3e\udf73\udf93\udfa4\udfa8\udfeb\udfed]|\ud83d[\udcbb\udcbc\udd27\udd2c\ude80\ude92])|(?:\ud83c[\udfcb\udfcc]|\ud83d\udd75|\u26f9)(?:\ufe0f|\ud83c[\udffb-\udfff])\u200d[\u2640\u2642]\ufe0f|(?:\ud83c[\udfc3\udfc4\udfca]|\ud83d[\udc6e\udc71\udc73\udc77\udc81\udc82\udc86\udc87\ude45-\ude47\ude4b\ude4d\ude4e\udea3\udeb4-\udeb6]|\ud83e[\udd26\udd37-\udd39\udd3d\udd3e\uddd6-\udddd])(?:\ud83c[\udffb-\udfff])?\u200d[\u2640\u2642]\ufe0f|\ud83d\udc68\u200d\u2764\ufe0f\u200d\ud83d\udc8b\u200d\ud83d\udc68|\ud83d\udc68\u200d\ud83d\udc68\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc68\u200d\ud83d\udc68\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc68\u200d\ud83d\udc69\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc68\u200d\ud83d\udc69\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc69\u200d\u2764\ufe0f\u200d\ud83d\udc8b\u200d\ud83d[\udc68\udc69]|\ud83d\udc69\u200d\ud83d\udc69\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc69\u200d\ud83d\udc69\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc68\u200d\u2764\ufe0f\u200d\ud83d\udc68|\ud83d\udc68\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc68\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc68\u200d\ud83d\udc68\u200d\ud83d[\udc66\udc67]|\ud83d\udc68\u200d\ud83d\udc69\u200d\ud83d[\udc66\udc67]|\ud83d\udc69\u200d\u2764\ufe0f\u200d\ud83d[\udc68\udc69]|\ud83d\udc69\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc69\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc69\u200d\ud83d\udc69\u200d\ud83d[\udc66\udc67]|\ud83c\udff3\ufe0f\u200d\ud83c\udf08|\ud83c\udff4\u200d\u2620\ufe0f|\ud83d\udc41\u200d\ud83d\udde8|\ud83d\udc68\u200d\ud83d[\udc66\udc67]|\ud83d\udc69\u200d\ud83d[\udc66\udc67]|\ud83d\udc6f\u200d\u2640\ufe0f|\ud83d\udc6f\u200d\u2642\ufe0f|\ud83e\udd3c\u200d\u2640\ufe0f|\ud83e\udd3c\u200d\u2642\ufe0f|\ud83e\uddde\u200d\u2640\ufe0f|\ud83e\uddde\u200d\u2642\ufe0f|\ud83e\udddf\u200d\u2640\ufe0f|\ud83e\udddf\u200d\u2642\ufe0f|(?:[\u0023\u002a\u0030-\u0039])\ufe0f?\u20e3|(?:(?:\ud83c[\udfcb\udfcc]|\ud83d[\udd74\udd75\udd90]|[\u261d\u26f7\u26f9\u270c\u270d])(?:\ufe0f|(?!\ufe0e))|\ud83c[\udf85\udfc2-\udfc4\udfc7\udfca]|\ud83d[\udc42\udc43\udc46-\udc50\udc66-\udc69\udc6e\udc70-\udc78\udc7c\udc81-\udc83\udc85-\udc87\udcaa\udd7a\udd95\udd96\ude45-\ude47\ude4b-\ude4f\udea3\udeb4-\udeb6\udec0\udecc]|\ud83e[\udd18-\udd1c\udd1e\udd1f\udd26\udd30-\udd39\udd3d\udd3e\uddd1-\udddd]|[\u270a\u270b])(?:\ud83c[\udffb-\udfff]|)|\ud83c\udff4\udb40\udc67\udb40\udc62\udb40\udc65\udb40\udc6e\udb40\udc67\udb40\udc7f|\ud83c\udff4\udb40\udc67\udb40\udc62\udb40\udc73\udb40\udc63\udb40\udc74\udb40\udc7f|\ud83c\udff4\udb40\udc67\udb40\udc62\udb40\udc77\udb40\udc6c\udb40\udc73\udb40\udc7f|\ud83c\udde6\ud83c[\udde8-\uddec\uddee\uddf1\uddf2\uddf4\uddf6-\uddfa\uddfc\uddfd\uddff]|\ud83c\udde7\ud83c[\udde6\udde7\udde9-\uddef\uddf1-\uddf4\uddf6-\uddf9\uddfb\uddfc\uddfe\uddff]|\ud83c\udde8\ud83c[\udde6\udde8\udde9\uddeb-\uddee\uddf0-\uddf5\uddf7\uddfa-\uddff]|\ud83c\udde9\ud83c[\uddea\uddec\uddef\uddf0\uddf2\uddf4\uddff]|\ud83c\uddea\ud83c[\udde6\udde8\uddea\uddec\udded\uddf7-\uddfa]|\ud83c\uddeb\ud83c[\uddee-\uddf0\uddf2\uddf4\uddf7]|\ud83c\uddec\ud83c[\udde6\udde7\udde9-\uddee\uddf1-\uddf3\uddf5-\uddfa\uddfc\uddfe]|\ud83c\udded\ud83c[\uddf0\uddf2\uddf3\uddf7\uddf9\uddfa]|\ud83c\uddee\ud83c[\udde8-\uddea\uddf1-\uddf4\uddf6-\uddf9]|\ud83c\uddef\ud83c[\uddea\uddf2\uddf4\uddf5]|\ud83c\uddf0\ud83c[\uddea\uddec-\uddee\uddf2\uddf3\uddf5\uddf7\uddfc\uddfe\uddff]|\ud83c\uddf1\ud83c[\udde6-\udde8\uddee\uddf0\uddf7-\uddfb\uddfe]|\ud83c\uddf2\ud83c[\udde6\udde8-\udded\uddf0-\uddff]|\ud83c\uddf3\ud83c[\udde6\udde8\uddea-\uddec\uddee\uddf1\uddf4\uddf5\uddf7\uddfa\uddff]|\ud83c\uddf4\ud83c\uddf2|\ud83c\uddf5\ud83c[\udde6\uddea-\udded\uddf0-\uddf3\uddf7-\uddf9\uddfc\uddfe]|\ud83c\uddf6\ud83c\udde6|\ud83c\uddf7\ud83c[\uddea\uddf4\uddf8\uddfa\uddfc]|\ud83c\uddf8\ud83c[\udde6-\uddea\uddec-\uddf4\uddf7-\uddf9\uddfb\uddfd-\uddff]|\ud83c\uddf9\ud83c[\udde6\udde8\udde9\uddeb-\udded\uddef-\uddf4\uddf7\uddf9\uddfb\uddfc\uddff]|\ud83c\uddfa\ud83c[\udde6\uddec\uddf2\uddf3\uddf8\uddfe\uddff]|\ud83c\uddfb\ud83c[\udde6\udde8\uddea\uddec\uddee\uddf3\uddfa]|\ud83c\uddfc\ud83c[\uddeb\uddf8]|\ud83c\uddfd\ud83c\uddf0|\ud83c\uddfe\ud83c[\uddea\uddf9]|\ud83c\uddff\ud83c[\udde6\uddf2\uddfc]|\ud800\udc00|\ud83c[\udccf\udd8e\udd91-\udd9a\udde6-\uddff\ude01\ude32-\ude36\ude38-\ude3a\ude50\ude51\udf00-\udf20\udf2d-\udf35\udf37-\udf7c\udf7e-\udf84\udf86-\udf93\udfa0-\udfc1\udfc5\udfc6\udfc8\udfc9\udfcf-\udfd3\udfe0-\udff0\udff4\udff8-\udfff]|\ud83d[\udc00-\udc3e\udc40\udc44\udc45\udc51-\udc65\udc6a-\udc6d\udc6f\udc79-\udc7b\udc7d-\udc80\udc84\udc88-\udca9\udcab-\udcfc\udcff-\udd3d\udd4b-\udd4e\udd50-\udd67\udda4\uddfb-\ude44\ude48-\ude4a\ude80-\udea2\udea4-\udeb3\udeb7-\udebf\udec1-\udec5\uded0-\uded2\udeeb\udeec\udef4-\udef8]|\ud83e[\udd10-\udd17\udd1d\udd20-\udd25\udd27-\udd2f\udd3a\udd3c\udd40-\udd45\udd47-\udd4c\udd50-\udd6b\udd80-\udd97\uddc0\uddd0\uddde-\udde6]|[\u23e9-\u23ec\u23f0\u23f3\u2640\u2642\u2695\u26ce\u2705\u2728\u274c\u274e\u2753-\u2755\u2795-\u2797\u27b0\u27bf\ue50a]|(?:\ud83c[\udc04\udd70\udd71\udd7e\udd7f\ude02\ude1a\ude2f\ude37\udf21\udf24-\udf2c\udf36\udf7d\udf96\udf97\udf99-\udf9b\udf9e\udf9f\udfcd\udfce\udfd4-\udfdf\udff3\udff5\udff7]|\ud83d[\udc3f\udc41\udcfd\udd49\udd4a\udd6f\udd70\udd73\udd76-\udd79\udd87\udd8a-\udd8d\udda5\udda8\uddb1\uddb2\uddbc\uddc2-\uddc4\uddd1-\uddd3\udddc-\uddde\udde1\udde3\udde8\uddef\uddf3\uddfa\udecb\udecd-\udecf\udee0-\udee5\udee9\udef0\udef3]|[\u00a9\u00ae\u203c\u2049\u2122\u2139\u2194-\u2199\u21a9\u21aa\u231a\u231b\u2328\u23cf\u23ed-\u23ef\u23f1\u23f2\u23f8-\u23fa\u24c2\u25aa\u25ab\u25b6\u25c0\u25fb-\u25fe\u2600-\u2604\u260e\u2611\u2614\u2615\u2618\u2620\u2622\u2623\u2626\u262a\u262e\u262f\u2638-\u263a\u2648-\u2653\u2660\u2663\u2665\u2666\u2668\u267b\u267f\u2692-\u2694\u2696\u2697\u2699\u269b\u269c\u26a0\u26a1\u26aa\u26ab\u26b0\u26b1\u26bd\u26be\u26c4\u26c5\u26c8\u26cf\u26d1\u26d3\u26d4\u26e9\u26ea\u26f0-\u26f5\u26f8\u26fa\u26fd\u2702\u2708\u2709\u270f\u2712\u2714\u2716\u271d\u2721\u2733\u2734\u2744\u2747\u2757\u2763\u2764\u27a1\u2934\u2935\u2b05-\u2b07\u2b1b\u2b1c\u2b50\u2b55\u3030\u303d\u3297\u3299])(?:\ufe0f|(?!\ufe0e))");
+
/// <summary>
/// テキストから URL を抽出して返します
/// </summary>
};
}
}
+
+ /// <summary>
+ /// テキストから絵文字を抽出して <see cref="TwitterEntityEmoji"/> として返します
+ /// </summary>
+ public static IEnumerable<TwitterEntityEmoji> ExtractEmojiEntities(string text)
+ {
+ var matches = TweetExtractor.EmojiPattern.Matches(text);
+
+ foreach (var match in matches.Cast<Match>())
+ {
+ var input = match.Value;
+
+ // 異字体セレクタ U+FE0F (emoji style) は除去する (ZWJ を含まない場合のみ)
+ if (!input.Contains('\u200D'))
+ input = input.Replace("\uFE0F", "");
+
+ var codepointHex = new List<string>();
+
+ for (var i = 0; i < input.Length; i += char.IsSurrogatePair(input, i) ? 2 : 1)
+ {
+ var codepoint = char.ConvertToUtf32(input, i);
+ codepointHex.Add($"{codepoint:x}");
+ }
+
+ var startPos = text.GetCodepointCount(0, match.Index);
+ var endPos = startPos + text.GetCodepointCount(match.Index, match.Index + match.Length);
+
+ yield return new TwitterEntityEmoji
+ {
+ Indices = new[] { startPos, endPos },
+ Text = input,
+ Url = "https://twemoji.maxcdn.com/2/72x72/" + string.Join("-", codepointHex) + ".png",
+ };
+ }
+ }
}
}
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