add AppendLine method

MeilCli · May 2, 2017 · 3a0a3a5 · 3a0a3a5
1 parent ba3abbe
commit 3a0a3a5
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Showing 2 changed files with 39 additions and 0 deletions.
diff --git a/Source/Plugin.CrossFormattedText.Abstractions/FormattedStringBuilder.cs b/Source/Plugin.CrossFormattedText.Abstractions/FormattedStringBuilder.cs
@@ -167,6 +167,32 @@ public void Append(string value,Span span) {
             Length += ar.Length;
         }
 
+        public void AppendLine() {
+            Append(Environment.NewLine);
+        }
+
+        public void AppendLine(Span span) {
+            Append(Environment.NewLine,span);
+        }
+
+        public void AppendLine(string value) {
+            AppendLine(value,null);
+        }
+
+        public void AppendLine(string value,Span span) {
+            if(value == null) {
+                throw new ArgumentNullException(nameof(value));
+            }
+
+            EnsureCapacity(Length + value.Length + Environment.NewLine.Length);
+
+            span = span ?? new Span();
+            CharSpan[] ar = (value + Environment.NewLine).ToCharArray().Select(x => new CharSpan(x,span)).ToArray();
+
+            Array.Copy(ar,0,values,Length,ar.Length);
+            Length += ar.Length;
+        }
+
         public FormattedString ToFormattedString() {
             return MergeCharSpan();
         }

diff --git a/Test/Test.CrossFormattedText.Unit/FormattedStringBuilderTest.cs b/Test/Test.CrossFormattedText.Unit/FormattedStringBuilderTest.cs
@@ -39,5 +39,18 @@ public void AppendTest() {
 
             Assert.AreEqual(fsb.ToFormattedString().Text,sb.ToString());
         }
+
+        [TestMethod]
+        public void AppendLineTest() {
+            var sb = new StringBuilder();
+            var fsb = new FormattedStringBuilder();
+
+            sb.AppendLine();
+            fsb.AppendLine();
+            sb.AppendLine("aaa");
+            fsb.AppendLine("aaa");
+
+            Assert.AreEqual(fsb.ToFormattedString().Text,sb.ToString());
+        }
     }
 }