continuing scene expansion

Ficdown.Parser.Tests/Ficdown.Parser.Tests.csproj

@@ -51,11 +51,13 @@
     <Compile Include="BlockHandlerTests.cs" />
     <Compile Include="IntegrationTests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="SceneLinkerTests.cs" />
     <Compile Include="TestStories\Resources.Designer.cs">
       <AutoGen>True</AutoGen>
       <DesignTime>True</DesignTime>
       <DependentUpon>Resources.resx</DependentUpon>
     </Compile>
+    <Compile Include="UtilityTests.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />

Ficdown.Parser.Tests/SceneLinkerTests.cs

@@ -0,0 +1,93 @@
+namespace Ficdown.Parser.Tests
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using Engine;
+    using Model.Story;
+    using ServiceStack.Text;
+    using Xunit;
+
+    public class SceneLinkerTests
+    {
+        private Story MockStoryWithScenes(IEnumerable<Scene> scenes)
+        {
+            var sceneDict = new Dictionary<string, IList<Scene>>();
+            foreach (var scene in scenes)
+            {
+                var key = Utilities.NormalizeString(scene.Name);
+                if(!sceneDict.ContainsKey(key)) sceneDict.Add(key, new List<Scene>());
+                sceneDict[key].Add(scene);
+            }
+            return new Story
+            {
+                Name = "Test Story",
+                Description = "Story description.",
+                FirstScene = sceneDict.First().Key,
+                Scenes = sceneDict
+            };
+        }
+
+        [Fact]
+        public void ConditionalAnchorGetsReplacedCorrectly()
+        {
+            var sl = new SceneLinker();
+            var story = MockStoryWithScenes(new[]
+            {
+                new Scene
+                {
+                    Name = "Test Scene",
+                    Description = "Test [passed|failed](?test-condition) text."
+                }
+            });
+            sl.ExpandScenes(story);
+            Assert.Equal(2, story.Scenes["test-scene"].Count);
+            Scene passed = null, failed = null;
+            Assert.DoesNotThrow(() =>
+                passed =
+                    story.Scenes["test-scene"].SingleOrDefault(
+                        s =>
+                            s.Conditions != null && s.Conditions.Contains("test-condition") &&
+                            s.Description.Equals("Test passed text.")));
+            Assert.DoesNotThrow(() =>
+                failed =
+                    story.Scenes["test-scene"].SingleOrDefault(
+                        s => s.Conditions == null && s.Description.Equals("Test failed text.")));
+            Assert.NotNull(passed);
+            Assert.NotNull(failed);
+        }
+
+        [Fact]
+        public void NegativeConditionalAnchorGetsReplacedCorrectly()
+        {
+            var sl = new SceneLinker();
+            var story = MockStoryWithScenes(new[]
+            {
+                new Scene
+                {
+                    Name = "Test Scene",
+                    Description = "Test [passed|failed](?!test-condition) text."
+                }
+            });
+            sl.ExpandScenes(story);
+            Console.WriteLine(story.Dump());
+        }
+
+        [Fact]
+        public void MultipleConditionalAnchorsGetReplacedCorrectly()
+        {
+            var sl = new SceneLinker();
+            var story = MockStoryWithScenes(new[]
+            {
+                new Scene
+                {
+                    Name = "Test Scene",
+                    Description =
+                        "Test1 [passed1|failed1](?test1-condition). Test2 [passed2|failed2](?test2-condition)."
+                }
+            });
+            sl.ExpandScenes(story);
+            Console.WriteLine(story.Dump());
+        }
+    }
+}

Ficdown.Parser.Tests/TestStories/the-robot-king.md

@@ -15,8 +15,8 @@ Your cave only has one tiny window, and through it you can see [the sun shining
 **What do you want to do?**
 
 - [Go outside and start walking to the palace.](/outside)
-- [Wait for it to stop raining.](#stopped-raining)
-- [Put on your raincoat.](#raincoat)
+- [Wait for it to stop raining.](?!stopped-raining#stopped-raining)
+- [Put on your raincoat.](?!raincoat#raincoat)
 
 ### Raincoat
 

Ficdown.Parser.Tests/UtilityTests.cs

@@ -0,0 +1,163 @@
+namespace Ficdown.Parser.Tests
+{
+    using System.Collections.Generic;
+    using Engine;
+    using Xunit;
+
+    public class UtilityTests
+    {
+        [Fact]
+        public void AnchorWithTargetMatches()
+        {
+            var anchor = RegexLib.Anchors.Match(@"[Link text](/target-scene)");
+            Assert.True(anchor.Success);
+            Assert.Equal("Link text", anchor.Groups["text"].Value);
+            Assert.Equal("/target-scene", anchor.Groups["href"].Value);
+        }
+
+        [Fact]
+        public void AnchorsWithConditionsMatch()
+        {
+            var anchor = RegexLib.Anchors.Match(@"[Link text](?condition-state)");
+            Assert.True(anchor.Success);
+            Assert.Equal("Link text", anchor.Groups["text"].Value);
+            Assert.Equal("?condition-state", anchor.Groups["href"].Value);
+
+            anchor = RegexLib.Anchors.Match(@"[Link text](?!condition-state)");
+            Assert.True(anchor.Success);
+            Assert.Equal("Link text", anchor.Groups["text"].Value);
+            Assert.Equal("?!condition-state", anchor.Groups["href"].Value);
+
+            anchor = RegexLib.Anchors.Match(@"[Link text](?condition-1&!condition-2)");
+            Assert.True(anchor.Success);
+            Assert.Equal("Link text", anchor.Groups["text"].Value);
+            Assert.Equal("?condition-1&!condition-2", anchor.Groups["href"].Value);
+        }
+
+        [Fact]
+        public void AnchorsWithTogglesMatch()
+        {
+            var anchor = RegexLib.Anchors.Match(@"[Link text](#toggle-state)");
+            Assert.True(anchor.Success);
+            Assert.Equal("Link text", anchor.Groups["text"].Value);
+            Assert.Equal("#toggle-state", anchor.Groups["href"].Value);
+
+            anchor = RegexLib.Anchors.Match(@"[Link text](#toggle-1+toggle-2)");
+            Assert.True(anchor.Success);
+            Assert.Equal("Link text", anchor.Groups["text"].Value);
+            Assert.Equal("#toggle-1+toggle-2", anchor.Groups["href"].Value);
+        }
+
+        [Fact]
+        public void ComplexAnchorsMatch()
+        {
+            var anchor = RegexLib.Anchors.Match(@"[Link text](/target-scene?condition-state#toggle-state)");
+            Assert.True(anchor.Success);
+            Assert.Equal("Link text", anchor.Groups["text"].Value);
+            Assert.Equal("/target-scene?condition-state#toggle-state", anchor.Groups["href"].Value);
+
+            anchor = RegexLib.Anchors.Match(@"[Link text](/target-scene#toggle-state)");
+            Assert.True(anchor.Success);
+            Assert.Equal("Link text", anchor.Groups["text"].Value);
+            Assert.Equal("/target-scene#toggle-state", anchor.Groups["href"].Value);
+
+            anchor = RegexLib.Anchors.Match(@"[Link text](/target-scene?condition-state)");
+            Assert.True(anchor.Success);
+            Assert.Equal("Link text", anchor.Groups["text"].Value);
+            Assert.Equal("/target-scene?condition-state", anchor.Groups["href"].Value);
+
+            anchor = RegexLib.Anchors.Match(@"[Link text](?condition-state#toggle-state)");
+            Assert.True(anchor.Success);
+            Assert.Equal("Link text", anchor.Groups["text"].Value);
+            Assert.Equal("?condition-state#toggle-state", anchor.Groups["href"].Value);
+        }
+
+        [Fact]
+        public void HrefWithTargetParses()
+        {
+            string target;
+            IList<string> conditions, toggles;
+            Utilities.ParseHref("/target-scene", out target, out conditions, out toggles);
+            Assert.Equal("target-scene", target);
+            Assert.Null(conditions);
+            Assert.Null(toggles);
+        }
+
+        [Fact]
+        public void HrefsWithConditionsParse()
+        {
+            string target;
+            IList<string> conditions, toggles;
+            Utilities.ParseHref("?condition-state", out target, out conditions, out toggles);
+            Assert.Null(target);
+            Assert.Equal(1, conditions.Count);
+            Assert.Contains("condition-state", conditions);
+            Assert.Null(toggles);
+
+            Utilities.ParseHref("?!condition-state", out target, out conditions, out toggles);
+            Assert.Null(target);
+            Assert.Equal(1, conditions.Count);
+            Assert.Contains("!condition-state", conditions);
+            Assert.Null(toggles);
+
+            Utilities.ParseHref("?condition-1&!condition-2", out target, out conditions, out toggles);
+            Assert.Null(target);
+            Assert.Equal(2, conditions.Count);
+            Assert.Contains("condition-1", conditions);
+            Assert.Contains("!condition-2", conditions);
+            Assert.Null(toggles);
+        }
+
+        [Fact]
+        public void HrefsWithTogglesParse()
+        {
+            string target;
+            IList<string> conditions, toggles;
+            Utilities.ParseHref("#toggle-state", out target, out conditions, out toggles);
+            Assert.Null(target);
+            Assert.Null(conditions);
+            Assert.Equal(1, toggles.Count);
+            Assert.Contains("toggle-state", toggles);
+
+            Utilities.ParseHref("#toggle-1+toggle-2", out target, out conditions, out toggles);
+            Assert.Null(target);
+            Assert.Null(conditions);
+            Assert.Equal(2, toggles.Count);
+            Assert.Contains("toggle-1", toggles);
+            Assert.Contains("toggle-2", toggles);
+        }
+
+        [Fact]
+        public void ComplexHrefsParse()
+        {
+            string target;
+            IList<string> conditions, toggles;
+            Utilities.ParseHref("/target-scene?condition-state#toggle-state", out target, out conditions, out toggles);
+            Assert.Equal("target-scene", target);
+            Assert.Equal(1, conditions.Count);
+            Assert.Contains("condition-state", conditions);
+            Assert.Equal(1, toggles.Count);
+            Assert.Contains("toggle-state", toggles);
+
+            Utilities.ParseHref("/target-scene?condition-state", out target, out conditions, out toggles);
+            Assert.Equal("target-scene", target);
+            Assert.Equal(1, conditions.Count);
+            Assert.Contains("condition-state", conditions);
+            Assert.Null(toggles);
+
+            Utilities.ParseHref("/target-scene#toggle-state", out target, out conditions, out toggles);
+            Assert.Equal("target-scene", target);
+            Assert.Null(conditions);
+            Assert.Equal(1, toggles.Count);
+            Assert.Contains("toggle-state", toggles);
+
+            Utilities.ParseHref("?!condition-one&condition-two#toggle-state", out target, out conditions, out toggles);
+            Assert.Null(target);
+            Assert.Equal(2, conditions.Count);
+            Assert.Contains("!condition-one", conditions);
+            Assert.Contains("condition-two", conditions);
+            Assert.Equal(1, toggles.Count);
+            Assert.Contains("toggle-state", toggles);
+        }
+    }
+}

Ficdown.Parser/Engine/RegexLib.cs

@@ -10,6 +10,11 @@
                 string.Format(@"(?<anchor>\[(?<text>{0})\]\([ ]*(?<href>{1})[ ]*\))", GetNestedBracketsPattern(),
                     GetNestedParensPattern()), RegexOptions.Singleline | RegexOptions.Compiled);
 
+        public static Regex ConditionalText = new Regex(@"^(?<true>([^|\\]|\\.)*)(\|(?<false>([^|\\]|\\.)+))?$",
+            RegexOptions.Singleline | RegexOptions.Compiled);
+
+        public static Regex EscapeChar = new Regex(@"(?<!\\)\\", RegexOptions.Compiled);
+
         private const string RegexValidName = @"[a-zA-Z](-?[a-zA-Z0-9])*";
         private static readonly string RegexHrefTarget = string.Format(@"\/({0})", RegexValidName);
         private static readonly string RegexHrefConditions = string.Format(@"\?((!?{0})(&!?{0})*)?", RegexValidName);

Ficdown.Parser/Engine/SceneLinker.cs

@@ -1,6 +1,8 @@
 namespace Ficdown.Parser.Engine
 {
+    using System;
     using System.Collections.Generic;
+    using System.Collections.Specialized;
     using System.Linq;
     using System.Text.RegularExpressions;
     using Model.Story;
@@ -41,11 +43,12 @@
                         }
                     }
                     // resolve the current scene
+                    var original = scene.Clone();
                     newScenes[key].Add(ResolveScene(scene, anchors));
                     // resolve the uniques
                     foreach (var unique in uniques)
                     {
-                        var uscene = scene.Clone();
+                        var uscene = original.Clone();
                         uscene.Conditions = unique;
                         newScenes[key].Add(ResolveScene(uscene, anchors));
                     }
@@ -64,6 +67,7 @@
             // make sure this is actually unique
             if (uniques.Any(u => u.Intersect(conditions).Count() == conditions.Count)) return;
             
+
             uniques.Add(conditions);
 
             // we need to treat this unioned with all other existing uniques as another potential unique
@@ -78,7 +82,42 @@
         {
             foreach (Match anchor in anchors)
             {
-                var satisfied = Utilities.ConditionsSatisfied(anchor.Groups["conditions"].Value, scene.Conditions);
+                string target;
+                IList<string> conditions, toggles;
+                Utilities.ParseHref(anchor.Groups["href"].Value, out target, out conditions, out toggles);
+                if (conditions != null)
+                {
+                    var satisfied = scene.Conditions == null
+                        ? conditions.All(c => c.StartsWith("!"))
+                        : conditions.All(
+                            c => scene.Conditions.Contains(c) ||
+                                 (c.StartsWith("!") && !scene.Conditions.Contains(c)));
+
+                    var text = anchor.Groups["text"].Value;
+                    var alts = RegexLib.ConditionalText.Match(text);
+                    if (!alts.Success)
+                        throw new FormatException(string.Format("Bad conditional anchor: {0}",
+                            anchor.Groups["anchor"].Value));
+
+                    var replace =
+                        RegexLib.EscapeChar.Replace(satisfied ? alts.Groups["true"].Value : alts.Groups["false"].Value,
+                            string.Empty);
+
+                    // if there's no target or toggles, replace the whole anchor
+                    if (target == null && toggles == null)
+                    {
+                        scene.Description = scene.Description.Replace(anchor.Groups["anchor"].Value, replace);
+                    }
+                    // if there's a target or toggles, replace the text and remove the conditions on the anchor
+                    else
+                    {
+                        scene.Description = scene.Description.Replace(anchor.Groups["anchor"].Value,
+                            string.Format("[{0}]({1}{2})", replace, anchor.Groups["target"].Value,
+                                anchor.Groups["toggles"].Value));
+                    }
+
+                }
+
             }
             return scene;
         }

Ficdown.Parser/Engine/Utilities.cs

@@ -1,4 +1,8 @@
-namespace Ficdown.Parser.Engine
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("Ficdown.Parser.Tests")]
+
+namespace Ficdown.Parser.Engine
 {
     using System;
     using System.Collections.Generic;
@@ -47,10 +51,5 @@
             }
             else throw new FormatException(string.Format("Invalid href: {0}", href));
         }
-
-        public static bool ConditionsSatisfied(string cquery, IList<string> conditions)
-        {
-            return false;
-        }
     }
 }