namespace Ficdown.Parser.Parser { using System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; using Model.Parser; using Model.Story; using Action = Model.Story.Action; internal class BlockHandler : IBlockHandler { public IEnumerable ExtractBlocks(IEnumerable lines) { var blocks = new List(); Block currentBlock = null; var lineNum = 1; foreach (var line in lines) { var match = Regex.Match(line, @"^(?#{1,3})\s+(?[^#].*)$"); if (match.Success) { if (currentBlock != null) blocks.Add(currentBlock); currentBlock = new Block() { Type = (BlockType) match.Groups["level"].Length, Name = match.Groups["name"].Value, Lines = new List(), LineNumber = lineNum++ }; } else { if (currentBlock != null) currentBlock.Lines.Add(new Line { Number = lineNum++, Text = line }); } } if (currentBlock != null) blocks.Add(currentBlock); return blocks; } public Story ParseBlocks(IEnumerable blocks) { // get the story var storyBlock = blocks.SingleOrDefault(b => b.Type == BlockType.Story); if(storyBlock == null) throw new FicdownException("No story block found"); Anchor storyAnchor; try { storyAnchor = Utilities.GetInstance(storyBlock.Name, storyBlock.LineNumber).ParseAnchor(storyBlock.Name); } catch(FicdownException ex) { throw new FicdownException(ex.BlockName, ex.LineNumber, "Story block must be an anchor pointing to the first scene"); } if (storyAnchor.Href.Target == null || storyAnchor.Href.Conditions != null || storyAnchor.Href.Toggles != null) throw new FicdownException(storyBlock.Name, storyBlock.LineNumber, "Story href should only have target"); var story = new Story { Name = storyAnchor.Text, Description = string.Join("\n", storyBlock.Lines.Select(l => l.Text)).Trim(), Scenes = new Dictionary>(), Actions = new Dictionary() }; var sid = 1; var scenes = blocks.Where(b => b.Type == BlockType.Scene).Select(b => BlockToScene(b, sid++)); foreach (var scene in scenes) { if (!story.Scenes.ContainsKey(scene.Key)) story.Scenes.Add(scene.Key, new List()); story.Scenes[scene.Key].Add(scene); } var aid = 1; try { story.Actions = blocks.Where(b => b.Type == BlockType.Action).Select(b => BlockToAction(b, aid++)).ToDictionary(a => a.Toggle, a => a); } catch(ArgumentException) { var a = blocks.First(b => b.Type == BlockType.Action && blocks.Any(d => b != d && BlockToAction(b, 0).Toggle == BlockToAction(d, 0).Toggle)); var actionA = BlockToAction(a, a.LineNumber); var dupe = blocks.First(b => b.Type == BlockType.Action && b != a && BlockToAction(b, 0).Toggle == actionA.Toggle); throw new FicdownException(actionA.Toggle, actionA.LineNumber, string.Format("Action is defined again on line {0}", dupe.LineNumber)); } if (!story.Scenes.ContainsKey(storyAnchor.Href.Target)) throw new FicdownException(storyBlock.Name, storyBlock.LineNumber, string.Format("Story targets non-existent scene: {0}", storyAnchor.Href.Target)); story.FirstScene = storyAnchor.Href.Target; return story; } private Scene BlockToScene(Block block, int id) { var scene = new Scene { Id = id, LineNumber = block.LineNumber, Description = string.Join("\n", block.Lines.Select(l => l.Text)).Trim() }; try { var sceneName = Utilities.GetInstance(block.Name, block.LineNumber).ParseAnchor(block.Name); scene.Name = sceneName.Title != null ? sceneName.Title.Trim() : sceneName.Text.Trim(); scene.Key = Utilities.GetInstance(block.Name, block.LineNumber).NormalizeString(sceneName.Text); if(sceneName.Href.Target != null || sceneName.Href.Toggles != null) throw new FicdownException(block.Name, block.LineNumber, string.Format("Scene href should only have conditions: {0}", block.Name)); scene.Conditions = sceneName.Href.Conditions; } catch(FicdownException) { scene.Name = block.Name.Trim(); scene.Key = Utilities.GetInstance(block.Name, block.LineNumber).NormalizeString(block.Name); } return scene; } private Action BlockToAction(Block block, int id) { return new Action { Id = id, Toggle = Utilities.GetInstance(block.Name, block.LineNumber).NormalizeString(block.Name), Description = string.Join("\n", block.Lines.Select(l => l.Text)).Trim(), LineNumber = block.LineNumber }; } } }