115 lines
4.2 KiB
C#
115 lines
4.2 KiB
C#
namespace Ficdown.Parser.Parser
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{
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text.RegularExpressions;
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using Model.Parser;
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using Model.Story;
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using Action = Model.Story.Action;
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internal class BlockHandler : IBlockHandler
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{
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public IEnumerable<Block> ExtractBlocks(IEnumerable<string> lines)
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{
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var blocks = new List<Block>();
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Block currentBlock = null;
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foreach (var line in lines)
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{
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var match = Regex.Match(line, @"^(?<level>#{1,3})\s+(?<name>[^#].*)$");
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if (match.Success)
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{
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if (currentBlock != null) blocks.Add(currentBlock);
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currentBlock = new Block()
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{
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Type = (BlockType) match.Groups["level"].Length,
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Name = match.Groups["name"].Value,
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Lines = new List<string>()
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};
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}
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else
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{
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if (currentBlock != null) currentBlock.Lines.Add(line);
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}
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}
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if (currentBlock != null) blocks.Add(currentBlock);
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return blocks;
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}
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public Story ParseBlocks(IEnumerable<Block> blocks)
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{
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// get the story
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var storyBlock = blocks.SingleOrDefault(b => b.Type == BlockType.Story);
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if(storyBlock == null) throw new FormatException("No story block found");
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var storyAnchor = Utilities.ParseAnchor(storyBlock.Name);
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if (storyAnchor.Href.Target == null || storyAnchor.Href.Conditions != null ||
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storyAnchor.Href.Toggles != null)
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throw new FormatException(string.Format("Story href should only have target: {0}",
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storyAnchor.Original));
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var story = new Story
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{
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Name = storyAnchor.Text,
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Description = string.Join("\n", storyBlock.Lines).Trim(),
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Scenes = new Dictionary<string, IList<Scene>>(),
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Actions = new Dictionary<string, Action>()
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};
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var sid = 1;
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var scenes = blocks.Where(b => b.Type == BlockType.Scene).Select(b => BlockToScene(b, sid++));
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foreach (var scene in scenes)
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{
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if (!story.Scenes.ContainsKey(scene.Key)) story.Scenes.Add(scene.Key, new List<Scene>());
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story.Scenes[scene.Key].Add(scene);
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}
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var aid = 1;
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story.Actions =
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blocks.Where(b => b.Type == BlockType.Action).Select(b => BlockToAction(b, aid++)).ToDictionary(a => a.Toggle, a => a);
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if (!story.Scenes.ContainsKey(storyAnchor.Href.Target))
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throw new FormatException(string.Format("Story targets non-existent scene: {0}", storyAnchor.Href.Target));
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story.FirstScene = storyAnchor.Href.Target;
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return story;
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}
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private Scene BlockToScene(Block block, int id)
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{
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var scene = new Scene
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{
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Id = id,
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Description = string.Join("\n", block.Lines).Trim()
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};
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try
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{
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var sceneName = Utilities.ParseAnchor(block.Name);
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scene.Name = sceneName.Title != null ? sceneName.Title.Trim() : sceneName.Text.Trim();
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scene.Key = Utilities.NormalizeString(sceneName.Text);
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if(sceneName.Href.Target != null || sceneName.Href.Toggles != null)
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throw new FormatException(string.Format("Scene href should only have conditions: {0}", block.Name));
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scene.Conditions = sceneName.Href.Conditions;
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}
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catch(FormatException)
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{
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scene.Name = block.Name.Trim();
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scene.Key = Utilities.NormalizeString(block.Name);
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}
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return scene;
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}
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private Action BlockToAction(Block block, int id)
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{
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return new Action
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{
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Id = id,
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Toggle = Utilities.NormalizeString(block.Name),
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Description = string.Join("\n", block.Lines).Trim()
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};
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}
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}
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} |