mcs/class/monodoc/Monodoc/providers/man-provider.cs

   1 //
   2 // A provider to display man pages
   3 //
   4 // Authors:
   5 //   Johannes Roith <johannes@roith.de>
   6 //   Jonathan Pryor <jpryor@novell.com>
   7 //
   8 // (C) 2008 Novell, Inc.
   9
  10 using System;
  11 using System.IO;
  12 using System.Text;
  13 using System.Xml;
  14 using System.Linq;
  15 using System.Collections.Generic;
  16
  17 namespace Monodoc.Providers
  18 {
  19         public class ManProvider : Provider
  20         {
  21                 string[] tocFiles;
  22
  23                 public ManProvider (string[] handbookTocFiles)
  24                 {
  25                         tocFiles = handbookTocFiles;
  26
  27                         // huh...
  28                         if (!File.Exists (tocFiles[0]))
  29                                 throw new FileNotFoundException (String.Format ("The table of contents, `{0}' does not exist", tocFiles[0]));
  30                 }
  31
  32                 public override void PopulateTree (Tree tree)
  33                 {
  34                         foreach(string TocFile in tocFiles) {
  35                                 XmlDocument doc = new XmlDocument();
  36                                 doc.Load (TocFile);
  37
  38                                 XmlNodeList nodeList = doc.GetElementsByTagName("manpage");
  39                                 Node nodeToAddChildrenTo = tree.RootNode;
  40                                 var storage = nodeToAddChildrenTo.Tree.HelpSource.Storage;
  41
  42                                 foreach (XmlNode node in nodeList) {
  43
  44                                         XmlAttribute name = node.Attributes["name"];
  45                                         XmlAttribute page = node.Attributes["page"];
  46
  47                                         if (name == null || page == null) continue;
  48
  49                                         if (!File.Exists (page.Value))
  50                                                 continue;
  51
  52                                         string target = "man:" + name.Value;
  53                                         nodeToAddChildrenTo.CreateNode (name.Value, target);
  54
  55                                         if (File.Exists (page.Value))
  56                                                 using (var file = File.OpenRead (page.Value))
  57                                                         storage.Store (name.Value, file);
  58                                 }
  59                         }
  60                 }
  61
  62                 public override void CloseTree (HelpSource hs, Tree tree)
  63                 {
  64                 }
  65         }
  66
  67         public class ManHelpSource : HelpSource
  68         {
  69                 const string ManPrefix = "man:";
  70                 Dictionary<string, Node> nodesMap;
  71
  72                 public ManHelpSource (string base_file, bool create) : base (base_file, create)
  73                 {
  74                         nodesMap = Tree.RootNode.ChildNodes.ToDictionary (n => n.Element);
  75                 }
  76
  77                 // Since man always has a flat tree and rather small amount of item
  78                 // we store them in a dictionary
  79                 public override Node MatchNode (string url)
  80                 {
  81                         Node result;
  82                         return nodesMap.TryGetValue (url, out result) ? result : null;
  83                 }
  84
  85                 public override DocumentType GetDocumentTypeForId (string id)
  86                 {
  87                         return id == "root:" ? DocumentType.TocXml : DocumentType.Man;
  88                 }
  89
  90                 public override bool IsGeneratedContent (string id)
  91                 {
  92                         return id == "root:";
  93                 }
  94
  95                 public override string GetText (string url)
  96                 {
  97                         return TreeDumper.ExportToTocXml (Tree.RootNode, "Mono Documentation Library", "Available man pages:");
  98                 }
  99
 100                 protected override string UriPrefix {
 101                         get {
 102                                 return ManPrefix;
 103                         }
 104                 }
 105         }
 106 }