App.cs :  » Bloggers » dasBlog » Candera » DasBlog » BlogXContentImport » C# / CSharp Open Source

// Copyright (c) 2003 Craig Andera
// TODO: Add appropriate license
// TODO: Change copyright if necessary

using System;
using System.IO; 
using System.Xml; 
using System.Xml.XPath; 
using System.Collections; 

using newtelligence.DasBlog.Runtime; 

namespace Candera.DasBlog.BlogXContentImport{
  class App
  {
    private const int SUCCESS = 0; 
    private const int ERRORWRONGUSAGE = -1; 
    private const int ERRORINPUTDIRNOTFOUND = -2; 
    private const int ERROROUTPUTDIRNOTFOUND = -3; 
    private const int ERROREXCEPTION = -4; 


    static int Main(string[] args)
    {
      try
      {
        #region Command Line Parsing
        string inputdir = null; 
        string outputdir = null; 
        for (int i = 0; i < args.Length; ++i)
        {
          if (args[i] == "-inputdir")
          {
            inputdir = args[++i]; 
          }
          else if (args[i] == "-outputdir")
          {
            outputdir = args[++i]; 
          }
        }

        if (inputdir == null || outputdir == null)
        {
          PrintUsage(); 
          return ERRORWRONGUSAGE; 
        }

        // Canonicalize and expand path to full path
        inputdir = Path.GetFullPath(inputdir); 
        outputdir = Path.GetFullPath(outputdir); 

        if (!Directory.Exists(inputdir))
        {
          Console.WriteLine(inputdir + " does not exist or is not a directory"); 
          return ERRORINPUTDIRNOTFOUND; 
        }

        if (!Directory.Exists(outputdir))
        {
          Console.WriteLine(outputdir + " does not exist or is not a directory"); 
          return ERROROUTPUTDIRNOTFOUND; 
        }

        #endregion Command Line Parsing

        IBlogDataService dsInput = BlogDataServiceFactory.GetService(inputdir,null);
        IBlogDataService dsOutput = BlogDataServiceFactory.GetService(outputdir, null); 

        Console.WriteLine("Porting posts"); 
        // Copy all dayentry files to output directory
        // This shouldn't require any conversion, since the format and naming convention matches
        // between BlogX and dasBlog
        EntryCollection entries =  dsInput.GetEntriesForDay(
          DateTime.MaxValue.AddDays(-2),
          TimeZone.CurrentTimeZone,
          String.Empty,
          int.MaxValue,
          int.MaxValue,
          String.Empty);

        //Hashtable lookup = new Hashtable(); 
        foreach (Entry e in entries)
        {
          //lookup[e.EntryId] = e; 
          dsOutput.SaveEntry(e); 
          Console.Write("."); 
        }

        Console.WriteLine(); 
        Console.WriteLine("Posts successfully ported"); 

        Console.WriteLine("Porting comments"); 

        // TODO: Read in all dayextra files from input directory
        int commentCount = 0; 
        string[] commentFiles = Directory.GetFiles(inputdir, "*.dayextra.xml");
        foreach (string commentFile in commentFiles)
        {
          // TODO: Match up comments with DayEntry, emit comment
          XPathDocument doc = new XPathDocument(Path.Combine(inputdir, commentFile)); 
          XPathNavigator nav = doc.CreateNavigator(); 
          XPathNodeIterator commentNodes = nav.Select("//Comment"); 

          while (commentNodes.MoveNext())
          {
            Comment comment = new Comment(); 
            
            XPathNavigator commentNode = commentNodes.Current; 

            comment.Content = (string) commentNode.Evaluate("string(Content)"); 
            comment.CreatedUtc = DateTime.Parse((string) commentNode.Evaluate("string(Created)")); 
            comment.ModifiedUtc = DateTime.Parse((string) commentNode.Evaluate("string(Modified)")); 
            comment.EntryId = (string) commentNode.Evaluate("string(EntryId)"); 
            comment.TargetEntryId = (string) commentNode.Evaluate("string(TargetEntryId)"); 
            comment.Author = (string) commentNode.Evaluate("string(Author)"); 
            comment.AuthorEmail = (string) commentNode.Evaluate("string(AuthorEmail)"); 
            comment.AuthorHomepage = (string) commentNode.Evaluate("string(AuthorHomepage)"); 

            dsOutput.AddComment(comment); 
            Console.Write("."); 
            ++commentCount; 
          }
        }

        Console.WriteLine(); 
        Console.WriteLine("{0} comments successfully imported!", commentCount); 
      }
      catch (Exception e)
      {
        // Return nonzero so automated tools can tell it failed
        Console.WriteLine(e.ToString()); 
        return ERROREXCEPTION; 
      }

      return SUCCESS; 
    }

    public static void PrintUsage()
    {
      Console.WriteLine(@"
DasBlogBlogXContentImport
Copyright (c) 2003 Craig Andera http://staff.develop.com/candera

Usage: 

dasblogblogxcontentimport -inputdir <input directory> -outputdir <output directory> 

  <input directory>   - Directory where BlogX dayentry and dayextra files live (must exist)
  <output directory>  - Directory where dasBlog dayentry and dayextra files will be created (must exist)
");
    }
  }
}