Update reading of file_header_template and stylecop.documentation.copyrightText to allow multiple lines

#3605

Author: bjornhellander

StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp8/Settings/SettingsCSharp8UnitTests.cs

@@ -69,6 +69,36 @@ public async Task VerifyEditorConfigSettingsAreReadCorrectlyAsync()
             Assert.Equal(OptionSetting.Allow, styleCopSettings.OrderingRules.BlankLinesBetweenUsingGroups);
         }
 
+        [Fact]
+        public async Task VerifyFileHeaderTemplateFromEditorConfigAsync()
+        {
+            var settings = @"root = true
+
+[*]
+file_header_template = Line 1\nLine 2.
+";
+            var context = await this.CreateAnalysisContextFromEditorConfigAsync(settings).ConfigureAwait(false);
+
+            var styleCopSettings = context.GetStyleCopSettings(CancellationToken.None);
+
+            Assert.Equal("Line 1\nLine 2.", styleCopSettings.DocumentationRules.GetCopyrightText("unused"));
+        }
+
+        [Fact]
+        public async Task VerifyStyleCopDocumentationCopyrightTextFromEditorConfigAsync()
+        {
+            var settings = @"root = true
+
+[*]
+stylecop.documentation.copyrightText = Line 1\nLine 2.
+";
+            var context = await this.CreateAnalysisContextFromEditorConfigAsync(settings).ConfigureAwait(false);
+
+            var styleCopSettings = context.GetStyleCopSettings(CancellationToken.None);
+
+            Assert.Equal("Line 1\nLine 2.", styleCopSettings.DocumentationRules.GetCopyrightText("unused"));
+        }
+
         [Theory]
         [CombinatorialData]
         public async Task VerifyBooleanDocumentationSettingsFromEditorConfigAsync(bool value)

StyleCop.Analyzers/StyleCop.Analyzers/Settings/ObjectModel/AnalyzerConfigHelper.cs

@@ -51,6 +51,12 @@ internal static string TryGetStringValue(AnalyzerConfigOptionsWrapper analyzerCo
             return null;
         }
 
+        internal static string TryGetMultiLineStringValue(AnalyzerConfigOptionsWrapper analyzerConfigOptions, string key, bool allowExplicitUnset = true)
+        {
+            var orgValue = TryGetStringValue(analyzerConfigOptions, key, allowExplicitUnset);
+            return orgValue?.Replace("\\r", "\r").Replace("\\n", "\n");
+        }
+
         internal static KeyValuePair<string, string>? TryGetStringValueAndNotification(AnalyzerConfigOptionsWrapper analyzerConfigOptions, string key, bool allowExplicitUnset = true)
         {
             if (analyzerConfigOptions.TryGetValue(key, out var value))

StyleCop.Analyzers/StyleCop.Analyzers/Settings/ObjectModel/DocumentationSettings.cs

@@ -245,8 +245,8 @@ protected internal DocumentationSettings(JsonObject documentationSettingsObject,
             documentPrivateFields ??= AnalyzerConfigHelper.TryGetBooleanValue(analyzerConfigOptions, "stylecop.documentation.documentPrivateFields");
 
             companyName ??= AnalyzerConfigHelper.TryGetStringValue(analyzerConfigOptions, "stylecop.documentation.companyName");
-            copyrightText ??= AnalyzerConfigHelper.TryGetStringValue(analyzerConfigOptions, "stylecop.documentation.copyrightText")
-                ?? AnalyzerConfigHelper.TryGetStringValue(analyzerConfigOptions, "file_header_template");
+            copyrightText ??= AnalyzerConfigHelper.TryGetMultiLineStringValue(analyzerConfigOptions, "stylecop.documentation.copyrightText")
+                ?? AnalyzerConfigHelper.TryGetMultiLineStringValue(analyzerConfigOptions, "file_header_template");
             headerDecoration ??= AnalyzerConfigHelper.TryGetStringValue(analyzerConfigOptions, "stylecop.documentation.headerDecoration");
 
             xmlHeader ??= AnalyzerConfigHelper.TryGetBooleanValue(analyzerConfigOptions, "stylecop.documentation.xmlHeader");