0.9

Author: migueldeicaza

NStack/NStack.csproj

@@ -5,7 +5,7 @@
   <PropertyGroup>
     <TargetFramework>netstandard1.6</TargetFramework>
     <PackageId>NStack.Core</PackageId>
-    <PackageVersion>0.8</PackageVersion>
+    <PackageVersion>0.9</PackageVersion>
     <Authors>Miguel de Icaza</Authors>
     <PackageLicenseUrl>https://github.com/migueldeicaza/NStack/blob/master/LICENSE.md</PackageLicenseUrl>
     <Owners>Miguel de Icaza</Owners>
@@ -17,7 +17,11 @@
 
 It starts with a new string type that is focused on Unicode code-points as opposed to the historical chars and  UTF-16 encoding and introduces a utf8 string that supports slicing</Description>
     <ReleaseVersion>0.3</ReleaseVersion>
-    <PackageReleaseNotes>* Renamed some methods to match the equivalent methods in Char.
+    <PackageReleaseNotes>0.9:
+Added ustring.ColumnWidth to return number of columns that a ustring takes in a console.
+
+0.8:
+* Renamed some methods to match the equivalent methods in Char.
 * Introduced Substring (int start)
 * Introduced difference between this [int start, int end] and this [int start, object end] the latter used to mean "until the end", replacing '0' as the previous value for "until the end".
 * Introduced new method in Rune to measure the width in columns for console applications.</PackageReleaseNotes>

NStack/strings/ustring.cs

@@ -997,6 +997,22 @@ public ustring Substring (int start)
 		/// <value>The rune count.</value>
 		public int RuneCount => Utf8.RuneCount (this);
 
+		/// <summary>
+		/// Returns the number of columns used by the unicode string on console applications.  This is done by calling the Rune.ColumnWidth on each rune.
+		/// </summary>
+		public int ConsoleWidth {
+			get {
+				int total = 0;
+				int blen = Length;
+				for (int i = 0; i < blen;) {
+					(var rune, var size) = Utf8.DecodeRune (this, i, i - blen);
+					i += size;
+					total += Rune.ColumnWidth (rune);
+				}
+				return total;
+			}
+		}
+
 		/// <summary>
 		/// Copies the specified number of bytes from the the underlying ustring representation to the target array at the specified offset.
 		/// </summary>