104 lines
3.1 KiB
C#
104 lines
3.1 KiB
C#
using System.Collections.Generic;
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using System.Linq;
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using System.Text.RegularExpressions;
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using MfGames.Gallium;
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using MfGames.Nitride.Contents;
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using MfGames.Nitride.Slugs;
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namespace MfGames.Nitride.Markdown;
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/// <summary>
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/// An operation that turns list items that starts with a link into a single
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/// link for the entire list item, even if there are additional links in the
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/// list.
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/// </summary>
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public class MakeSingleLinkListItems : IOperation
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{
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private readonly ISlugConverter slugs;
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public MakeSingleLinkListItems(ISlugConverter slugs)
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{
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this.slugs = slugs;
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}
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/// <inheritdoc />
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public IEnumerable<Entity> Run(IEnumerable<Entity> input)
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{
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return input
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.SelectManyEntity<IsMarkdown>(
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x => x
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.Select(this.MakeSingleLinkLists));
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}
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/// <summary>
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/// This turns all links that start with a link into a single link while
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/// removing all trailing links within the line. This is to simplify the
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/// rendering of the link on page.
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/// </summary>
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private Entity MakeSingleLinkLists(Entity entity)
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{
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string content = entity.GetText()!;
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string output = Regex.Replace(
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content,
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@"- \[\[(?<label>[^\]]+?)\]\](?<post>[^\n]+)\n",
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match =>
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{
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string wiki = match.Groups["label"].ToString();
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string path = string.Format(
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"/{0}/",
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this.slugs.ToSlug(wiki.Split('|').First()));
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string label = wiki.Split('|').Last();
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string after = match.Groups["post"].ToString();
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string post = this.RemoveLinks(after);
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string value = $"- [{label}{post}]({path})\n";
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return value;
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});
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output = Regex.Replace(
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output,
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@"- \[(?<label>[^\]]+?)\]\((?<path>[^\)]+?)\)(?<post>[^\n]+)\n",
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match =>
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{
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string label = match.Groups["label"].ToString();
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string path = match.Groups["path"].ToString();
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string after = match.Groups["post"].ToString();
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string post = this.RemoveLinks(after);
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string value = $"- [{label}{post}]({path})\n";
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return value;
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});
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return entity.SetTextContent(output);
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}
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/// <summary>
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/// Removes a normal link and replaces it with the text.
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/// </summary>
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private string RemoveLinks(string input)
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{
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string output = Regex.Replace(
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input,
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@"\[\[(?<label>[^\]]+)\]\]",
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match =>
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{
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string link1 = match.Groups["label"].ToString();
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string path1 = string.Format(
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"/{0}/",
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this.slugs.ToSlug(link1.Split('|').First()));
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string label1 = link1.Split('|').Last();
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return label1;
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});
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output = Regex.Replace(
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output,
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@"\[(?<label>[^\]]+)\]\([^)]+\)",
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match => match.Groups["label"].ToString());
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return output;
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}
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}
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