Assert.Throws<ArgumentOutOfRangeException>(() => "a".GetCodepointAtSafe(1));
}
+ [Theory]
+ [InlineData("", 0, 0, 0)]
+ [InlineData("sushi 🍣", 0, 8, 7)]
+ [InlineData("sushi 🍣", 0, 5, 5)]
+ [InlineData("sushi 🍣", 6, 8, 1)]
+ [InlineData("sushi 🍣", 6, 7, 1)] // サロゲートペアの境界を跨ぐ範囲 (LowSurrogate が無い)
+ [InlineData("sushi 🍣", 7, 8, 1)] // サロゲートペアの境界を跨ぐ範囲 (HighSurrogate が無い)
+ public void GetCodepointCount_Test(string str, int start, int end, int expected)
+ => Assert.Equal(expected, str.GetCodepointCount(start, end));
+
+ [Fact]
+ public void GetCodepointCount_ErrorTest()
+ {
+ Assert.Throws<ArgumentNullException>(() => ((string)null).GetCodepointCount(0, 0));
+ Assert.Throws<ArgumentOutOfRangeException>(() => "abc".GetCodepointCount(-1, 3));
+ Assert.Throws<ArgumentOutOfRangeException>(() => "abc".GetCodepointCount(0, 4));
+ Assert.Throws<ArgumentOutOfRangeException>(() => "abc".GetCodepointCount(4, 5));
+ Assert.Throws<ArgumentOutOfRangeException>(() => "abc".GetCodepointCount(2, 1));
+ }
+
[Fact]
public async Task ForEachAsync_Test()
{
[Fact]
public void ExtractUrlEntities_SurrogatePairTest()
{
- var entity = TweetExtractor.ExtractUrlEntities("✨ http://example.com/ ✨").Single();
+ var entity = TweetExtractor.ExtractUrlEntities("🍣 http://example.com/ 🍣").Single();
Assert.Equal(new[] { 2, 21 }, entity.Indices);
Assert.Equal("http://example.com/", entity.Url);
}
[Fact]
+ public void ExtractMentionEntities_SurrogatePairTest()
+ {
+ var entity = TweetExtractor.ExtractMentionEntities("🍣 @twitterapi").Single();
+
+ Assert.Equal(new[] { 2, 13 }, entity.Indices);
+ Assert.Equal("twitterapi", entity.ScreenName);
+ }
+
+ [Fact]
public void ExtractHashtagEntities_Test()
{
var entity = TweetExtractor.ExtractHashtagEntities("hogehoge #test").Single();
Assert.Equal(new[] { 15, 21 }, entities[1].Indices);
Assert.Equal("test2", entities[1].Text);
}
+
+ [Fact]
+ public void ExtractHashtagEntities_SurrogatePairTest()
+ {
+ var entity = TweetExtractor.ExtractHashtagEntities("🍣 #sushi").Single();
+
+ Assert.Equal(new[] { 2, 8 }, entity.Indices);
+ Assert.Equal("sushi", entity.Text);
+ }
}
}
return s[index];
}
+ /// <summary>
+ /// 指定された部分文字列のコードポイント単位での文字数を返す
+ /// </summary>
+ /// <param name="s">文字列</param>
+ /// <param name="start">開始位置</param>
+ /// <param name="end">終了位置</param>
+ public static int GetCodepointCount(this string s, int start, int end)
+ {
+ if (s == null)
+ throw new ArgumentNullException(nameof(s));
+ if (start < 0 || start > s.Length)
+ throw new ArgumentOutOfRangeException(nameof(start));
+ if (end < 0 || end > s.Length)
+ throw new ArgumentOutOfRangeException(nameof(end));
+ if (start > end)
+ throw new ArgumentOutOfRangeException(nameof(start));
+
+ var count = 0;
+ for (var i = start; i < end; i += char.IsSurrogatePair(s, i) ? 2 : 1)
+ count++;
+
+ return count;
+ }
+
public static Task ForEachAsync<T>(this IObservable<T> observable, Action<T> subscriber)
=> ForEachAsync(observable, value => { subscriber(value); return Task.CompletedTask; });
更新履歴
==== Ver 2.1.3-dev(2018/xx/xx)
+ * FIX: ユーザー情報ダイアログでbioに絵文字を含む場合にハッシュタグやメンションのリンク範囲がずれる不具合を修正
==== Ver 2.1.2(2018/09/30)
* CHG: 投稿時取得の設定がオフでも、投稿した内容を即時タイムラインに反映させるようにしました
if (validUrl)
{
- var startPos = m.Groups["url"].Index;
- var endPos = startPos + m.Groups["url"].Length;
+ var urlGroup = m.Groups["url"];
+ var startPos = text.GetCodepointCount(0, urlGroup.Index);
+ var endPos = startPos + text.GetCodepointCount(urlGroup.Index, urlGroup.Index + urlGroup.Length);
yield return new TwitterEntityUrl
{
var matchesAtList = Regex.Matches(text, @"(?<=^|[^a-zA-Z0-9_/])([@＠][a-zA-Z0-9_]{1,20}/[a-zA-Z][a-zA-Z0-9\p{IsLatin-1Supplement}\-]{0,79})");
foreach (var match in matchesAtList.Cast<Match>())
{
- var startPos = match.Index;
- var endPos = startPos + match.Length;
+ var startPos = text.GetCodepointCount(0, match.Index);
+ var endPos = startPos + text.GetCodepointCount(match.Index, match.Index + match.Length);
yield return new TwitterEntityMention
{
var matchesAtUser = Regex.Matches(text, "(?<=^|[^a-zA-Z0-9_/])([@＠][a-zA-Z0-9_]{1,20})(?=[^a-zA-Z0-9_/]|$)");
foreach (var match in matchesAtUser.Cast<Match>())
{
- var startPos = match.Index;
- var endPos = startPos + match.Length;
+ var startPos = text.GetCodepointCount(0, match.Index);
+ var endPos = startPos + text.GetCodepointCount(match.Index, match.Index + match.Length);
yield return new TwitterEntityMention
{
{
var groupHashtagSharp = match.Groups[2];
var groupHashtagText = match.Groups[3];
- var startPos = groupHashtagSharp.Index;
- var endPos = startPos + groupHashtagSharp.Length + groupHashtagText.Length;
+ var startPos = text.GetCodepointCount(0, groupHashtagSharp.Index);
+ var endPos = startPos + text.GetCodepointCount(groupHashtagSharp.Index, groupHashtagSharp.Index + groupHashtagSharp.Length + groupHashtagText.Length);
yield return new TwitterEntityHashtag
{
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