[Adapdev-commits] Adapdev/src/Adapdev.NVelocity/Dvsl Dvsl.cs,1.4,1.5 DvslContext.cs,1.4,1.5 DvslNode

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Update of /cvsroot/adapdev/Adapdev/src/Adapdev.NVelocity/Dvsl
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv909/src/Adapdev.NVelocity/Dvsl

Added Files:
	Dvsl.cs DvslContext.cs DvslNode.cs DvslNodeContext.cs 
	DvslNodeImpl.cs TransformTool.cs Transformer.cs 
Log Message:


--- NEW FILE: Transformer.cs ---
namespace NVelocity.Dvsl
{
	using System;
	using System.Collections;
	using System.IO;
	using System.Xml;
	using NVelocity.App;
	using NVelocity.Context;

	/// <summary>  <p>
	/// Class responsible for actual transformation
	/// of documents.
	/// </p>
	/// <p>
	/// Note that this class is <em>not</em> threadsafe.
	/// </p>
	/// </summary>
	/// <author> <a href="mailto:ge...@ap...">Geir Magnusson Jr.</a></author>
	internal class Transformer : TransformTool
	{
		/// <summary>
		/// Instance of VelocityEngine we are currently using.
		/// This must be reset with a stylesheeet change
		/// </summary>
		private VelocityEngine ve = null;

		/// <summary>
		/// basic context passed to us - can contain tools
		/// and such for use.  Is protected from change via
		/// wrapping
		/// </summary>
		private IContext baseContext;

		/// <summary>
		/// context used during processing. Wraps the baseContext
		/// </summary>
		private DVSLNodeContext currentContext;

		private TemplateHandler templateHandler = null;

		/// <summary>
		/// HashMap to hold application values
		/// </summary>
		private Hashtable appValue = new Hashtable();

		/// <summary>
		/// Sole public CTOR.  We rely on the caller to give us a
		/// VelocityEngine ready with all macros registered.
		/// The context is the callers context with all tools and 
		/// style drek.
		/// </summary>
		public Transformer(VelocityEngine ve, TemplateHandler th, IContext context, Hashtable applicationValues, bool validate)
		{
			this.ve = ve;
			this.baseContext = context;
			this.templateHandler = th;

			appValue = applicationValues;
		}

		/// <summary>
		/// Method that performs the transformation on
		/// a document
		/// </summary>
		/// <param name="reader">XML document char stream</param>
		/// <param name="writer">Writer to output transformation to</param>
		internal virtual long Transform(TextReader reader, TextWriter writer)
		{
			/*
	    *  parse the document
	    */
			XmlDocument document = new XmlDocument();
			document.Load(reader);

			return Transform(document, writer);
		}

		internal virtual long Transform(XmlDocument dom4jdoc, TextWriter writer)
		{
			/*
	    *  wrap the document.  We do this as we let the dom4j package
	    *  decide if we have a match against "/", so we need document
	    *  to do that
	    */
			DvslNode root = new DvslNodeImpl(dom4jdoc);
			return Transform(root, writer);
		}

		protected internal virtual long Transform(DvslNode root, TextWriter writer)
		{
			/*
	    *  wrap in a context to keep subsequent documents from
	    *  interacting with each other
	    */
			currentContext = new DVSLNodeContext(baseContext);
			long start = (DateTime.Now.Ticks - 621355968000000000)/10000;

			/*
	    *  push 'this' into the context as our TransformTool
	    *  and invoke the transformation
	    */
			currentContext.Put("context", this);
			Invoke(root, writer);
			long end = (DateTime.Now.Ticks - 621355968000000000)/10000;
			return end - start;
		}


		private void Invoke(DvslNode element, TextWriter writer)
		{
			String[] arr = new String[] {};
			currentContext.PushNode(element);
			templateHandler.Render(element, currentContext, writer);
			currentContext.PopNode();
		}

		public virtual Object Get(String key)
		{
			return currentContext.Get(key);
		}

		public virtual String ApplyTemplates(DvslNode node, String xpath)
		{
			/*
	    *  get the nodes that was asked for
	    */
			IList nodeset = node.SelectNodes(xpath);
			StringWriter sw = new StringWriter();

			for (int i = 0; i < nodeset.Count; i++)
			{
				DvslNode n = (DvslNode) nodeset[i];
				Invoke(n, sw);
			}
			return sw.ToString();
		}

		public virtual String ApplyTemplates(DvslNode node)
		{
			StringWriter sw = new StringWriter();
			Invoke(node, sw);
			return sw.ToString();
		}

		public virtual String ApplyTemplates()
		{
			return ApplyTemplates(currentContext.PeekNode(), "*|@*|text()|comment()|processing-instruction()");
		}

		public virtual String ApplyTemplates(String path)
		{
			DvslNode node = currentContext.PeekNode();
			return ApplyTemplates(node, path);
		}

		public virtual String Copy()
		{
			/*
	    *  fakie, for now
	    */
			DvslNode node = currentContext.PeekNode();
			return node.Copy();
		}

		public virtual Object GetAppValue(Object key)
		{
			return appValue[key];
		}

		public virtual Object PutAppValue(Object key, Object value)
		{
			return appValue[key] = value;
		}


	}
}
--- NEW FILE: DvslNodeContext.cs ---
namespace NVelocity.Dvsl
{
	using System;
	using System.Collections;
	using NVelocity.Context;

	/// <summary>  <p>
	/// Context implementation that is the outer context
	/// during the transformation.  Holds the node stack
	/// and also protects the 'special' context elements
	/// like 'node'
	/// </p>
	/// <p>
	/// There are special elements like 'node', which is 
	/// readonly and corresponds to the current node, and
	/// 'attrib', which corresponds to a map of attributes
	/// for the current node.
	/// </p>
	/// </summary>
	/// <author> <a href="mailto:ge...@ap...">Geir Magnusson Jr.</a></author>
	internal class DVSLNodeContext : VelocityContext
	{
		/// <summary>
		/// Magic context entity that corresponds
		/// to the current node
		/// </summary>
		private const String NODE = "node";

		/// <summary>
		/// Magic context entity that corresponds to
		/// a Map of attributes for the current node
		/// </summary>
		private const String ATTRIB = "attrib";

		/// <summary>
		/// Used to hold the nodes as we get invoked from
		/// within the document for applyTemplates() duties
		/// </summary>
		private Stack nodeStack = new Stack();

		protected internal Hashtable ctx = new Hashtable();

		public DVSLNodeContext(IContext context) : base(context)
		{
		}

		public DVSLNodeContext()
		{
		}

		/// <summary>
		/// retrieves value for key from internal storage
		/// </summary>
		/// <param name="key">name of value to get</param>
		/// <returns>value as object</returns>
		public override Object InternalGet(String key)
		{
			Object o = null;

			/*
	    *  special token : NODE
	    *
	    *  returns current node
	    */

			if (key.Equals(NODE))
			{
				return PeekNode();
			}

			/*
	    *  ATTRIB - returns attribute map
	    */
			if (key.Equals(ATTRIB))
			{
				DvslNode n = PeekNode();
				return n.AttribMap;
			}

			/*
	    *  start with local storage
	    */
			return ctx[key];
		}

		/// <summary>  
		/// stores the value for key to internal
		/// storage
		/// </summary>
		/// <param name="key">name of value to store
		/// </param>
		/// <param name="value">value to store
		/// </param>
		/// <returns>previous value of key as Object
		/// </returns>
		public override Object InternalPut(String key, Object value)
		{
			/*
	    *  protect both NODE and ATTRIB for now.  We
	    *  might want to let people set ATTRIB, but
	    *  I suspect not
	    */

			if (key.Equals(NODE))
				return null;

			if (key.Equals(ATTRIB))
				return null;

			return ctx[key] = value;
		}

		/// <summary>
		/// determines if there is a value for the
		/// given key
		/// </summary>
		/// <param name="key">name of value to check
		/// </param>
		/// <returns>true if non-null value in store
		/// </returns>
		public override bool InternalContainsKey(Object key)
		{
			return ctx.ContainsKey(key);
		}

		/// <summary>
		/// returns array of keys
		/// $$$ GMJ todo
		/// </summary>
		/// <returns>keys as []
		/// </returns>
		public override Object[] InternalGetKeys()
		{
			return null;
		}

		/// <summary>
		/// remove a key/value pair from the internal storage
		/// </summary>
		/// <param name="key">name of value to remove</param>
		/// <returns>value removed</returns>
		public override Object InternalRemove(Object key)
		{
			Object o = ctx[key];
			ctx.Remove(key);
			return o;
		}


		/* === routines to manage current node stack === */

		internal virtual DvslNode PushNode(DvslNode n)
		{
			nodeStack.Push(n);
			return n;
		}

		internal virtual DvslNode PeekNode()
		{
			return (DvslNode) nodeStack.Peek();
		}

		internal virtual DvslNode PopNode()
		{
			return (DvslNode) nodeStack.Pop();
		}

		internal virtual void ClearNode()
		{
			nodeStack.Clear();
			return;
		}


	}
}
--- NEW FILE: DvslContext.cs ---
namespace NVelocity.Dvsl
{
	using System;
	using System.Collections;
	using NVelocity.Context;

	/// <summary>
	/// Context implementation that handles wrapping several 
	/// contexts simultaneously.  The style context gets
	/// special treatment, getting checked first.
	/// </summary>
	/// <author> <a href="mailto:ge...@ap...">Geir Magnusson Jr.</a></author>
	internal class DvslContext : VelocityContext
	{
		protected internal IContext styleContext = null;
		protected internal IList contextList = new ArrayList();

		/// <summary>
		/// Used to hold the nodes as we get invoked from
		/// within the document for applyTemplates() duties
		/// </summary>
		private Stack nodeStack = new Stack();

		protected internal Hashtable ctx = new Hashtable();


		public DvslContext()
		{
		}

		public virtual DvslNode PushNode(DvslNode n)
		{
			nodeStack.Push(n);
			return n;
		}

		public virtual DvslNode PeekNode()
		{
			return (DvslNode) nodeStack.Peek();
		}

		public virtual DvslNode PopNode()
		{
			return (DvslNode) nodeStack.Pop();
		}

		public virtual void ClearNode()
		{
			nodeStack.Clear();
			return;
		}

		public virtual void ClearContexts()
		{
			styleContext = null;
			contextList.Clear();
		}

		public virtual void AddContext(IContext c)
		{
			if (c != null)
				contextList.Add(c);
		}


		/// <summary>  
		/// retrieves value for key from internal storage
		/// </summary>
		/// <param name="key">name of value to get</param>
		/// <returns>value as object</returns>
		public override Object InternalGet(String key)
		{
			Object o = null;

			/*
	    *  special tokens 
	    */
			if (key.Equals("node"))
			{
				return PeekNode();
			}

			/*
	    *  start with local storage
	    */
			o = ctx[key];
			if (o != null)
				return o;

			/*
	    *  if that doesn't work, try style first
	    *  then others
	    */
			if (styleContext != null)
			{
				o = styleContext.Get(key);
				if (o != null)
					return o;
			}

			for (int i = 0; i < contextList.Count; i++)
			{
				IContext c = (IContext) contextList[i];
				o = c.Get(key);
				if (o != null)
					return o;
			}
			return null;
		}

		/// <summary>  
		/// stores the value for key to internal storage
		/// </summary>
		/// <param name="key">name of value to store</param>
		/// <param name="value">value to store</param>
		/// <returns>previous value of key as Object</returns>
		public override Object InternalPut(String key, Object value)
		{
			if (key.Equals("node"))
				return null;

			return ctx[key] = value;
		}

		/// <summary>  
		/// determines if there is a value for the given key
		/// </summary>
		/// <param name="key">name of value to check</param>
		/// <returns>true if non-null value in store</returns>
		public override bool InternalContainsKey(Object key)
		{
			/*
	    *  start with local storage
	    */
			if (ctx.ContainsKey(key))
				return true;

			/*
	    *  if that doesn't work, try style first
	    *  then others
	    */
			if (styleContext != null && styleContext.ContainsKey(key))
				return true;

			for (int i = 0; i < contextList.Count; i++)
			{
				IContext c = (IContext) contextList[i];
				if (c.ContainsKey(key))
					return true;
			}

			return false;
		}

		/// <summary>  
		/// returns array of keys
		/// 
		/// $$$ GMJ todo
		/// 
		/// </summary>
		/// <returns>keys as []</returns>
		public override Object[] InternalGetKeys()
		{
			return null;
		}

		/// <summary>  
		/// remove a key/value pair from the
		/// internal storage
		/// </summary>
		/// <param name="key">name of value to remove</param>
		/// <returns>value removed</returns>
		public override Object InternalRemove(Object key)
		{
			Object o = ctx[key];
			ctx.Remove(key);
			return o;
		}


		public virtual IContext StyleContext
		{
			set { styleContext = value; }
		}


	}
}
--- NEW FILE: TransformTool.cs ---
namespace NVelocity.Dvsl
{
	using System;

	/// <summary>
	/// This is the tool interface exposed to the stylesheet.
	/// </summary>
	/// <author> <a href="mailto:ge...@ap...">Geir Magnusson Jr.</a></author>
	public interface TransformTool
	{
		/// <summary>
		/// Applies templates in the current stylesheet
		/// to the nodeset returned by the XPath expression
		/// </summary>
		/// <param name="xpath">XPath expression to select nodes</param>
		/// <returns>The rendered result</returns>
		String ApplyTemplates(String xpath);

		String ApplyTemplates(DvslNode node);

		String ApplyTemplates(DvslNode node, String xpath);

		String ApplyTemplates();

		String Copy();

		Object Get(String key);

		Object GetAppValue(Object key);

		Object PutAppValue(Object key, Object value);

	}
}
--- NEW FILE: Dvsl.cs ---
namespace NVelocity.Dvsl
{
	using System;
	using System.Collections;
	using System.IO;
	using System.Xml;
	using Commons.Collections;
	using NVelocity.App;
	using NVelocity.Context;
	using NVelocity.Runtime;

	/// <summary>  
	/// Main DVSL class - use this as the helper class for apps
	/// </summary>
	/// <author> <a href="mailto:ge...@ap...">Geir Magnusson Jr.</a></author>
	/// <author> <a href="mailto:bi...@pr...">Bill Burton.</a></author>
	public class Dvsl
	{
		private static String TOOL_PROP_PREFIX = "toolbox.tool.";
		private static String STRING_PROP_PREFIX = "toolbox.string.";
		private static String INTEGER_PROP_PREFIX = "toolbox.integer.";
		private static String TOOLBOX_NAME = "toolbox.contextname.";

		private VelocityEngine ve = null;
		private XmlDocument currentDocument = null;
		private StreamWriter currentWriter = null;
		private IContext toolContext;
		private IContext userContext;
		private IContext styleContext;
		private DvslContext baseContext = new DvslContext();
		private Transformer transformer;

		private bool ready = false;
		private Hashtable velConfig = null;
		private FileInfo logFile;
		private Hashtable appVals = new Hashtable();
		private TemplateHandler templateHandler = new TemplateHandler();
		internal bool validate = false;


		/// <summary>
		/// lets the user specify a filename for logging.
		/// </summary>
		public virtual FileInfo LogFile
		{
			set
			{
				this.logFile = value;

				if (velConfig == null)
				{
					velConfig = new Hashtable();
				}

				velConfig[RuntimeConstants_Fields.RUNTIME_LOG] = value.FullName;
			}
		}

		/// <summary>
		/// lets the user pass a java.util.Properties containing
		/// properties for the configuration of the VelocityEngine
		/// used by DVSL
		/// </summary>
		public virtual Hashtable VelocityConfig
		{
			set
			{
				if (velConfig != null)
				{
					foreach (Object key in velConfig.Keys)
					{
						value.Add(key, velConfig[key]);
					}
				}

				velConfig = value;
			}
		}

		/// <summary>
		/// Sets the user context.  The user context is
		/// a Velocity Context containing user-supplied
		/// objects and data that are to be made available
		/// in the template
		/// </summary>
		/// <param name="ctx">User context of data</param>
		public virtual IContext UserContext
		{
			set
			{
				ready = false;
				userContext = value;
			}
		}

		/// <summary>
		/// Uses a validating parser on all input documents
		/// </summary>
		/// <param name="">validate</param>
		public virtual bool ValidatingParser
		{
			set { validate = value; }
		}

		/// <summary>
		/// <p>Loads the toolbox from the input Properties.</p>
		/// <p>Currently supports specification of the Toolbox
		/// name in the context, creating classes, and string
		/// and integer values.  Ex :
		/// </p>
		/// 
		/// <pre>
		/// toolbox.contextname = floyd
		/// toolbox.tool.footool = Footool
		/// toolbox.string.mystring = Hello there!
		/// toolbox.integer.myint = 7
		/// toolbox.string.sourcebase = ./xdocs/
		/// </pre>
		/// 
		/// <p>
		/// So in template, this toolbox and it's values would
		/// be accessed as :
		/// </p>
		/// <pre>
		/// $context.floyd.footool.getFoo()
		/// $context.floyd.mystring
		/// $context.floyd.myint
		/// </pre>
		/// </summary>
		public virtual ExtendedProperties Toolbox
		{
			set
			{
				ready = false;

				/*
		*  for each key that looks like
		*     toolbox.tool.<token> = class
		*/

				Hashtable toolbox = new Hashtable();
				String toolboxname = "toolbox";

				IEnumerator it = value.Keys;
				while (it.MoveNext())
				{
					String key = it.Current.ToString();
					String val = value.GetString(key);

					if (key.StartsWith(TOOL_PROP_PREFIX))
					{
						String toolname = key.Substring(TOOL_PROP_PREFIX.Length);

						Type type = Type.GetType(val);
						Object o = Activator.CreateInstance(type);
						toolbox[toolname] = o;
					}
					else if (key.StartsWith(INTEGER_PROP_PREFIX))
					{
						String toolname = key.Substring(INTEGER_PROP_PREFIX.Length);

						int i = 0;

						try
						{
							i = Int32.Parse(val);
						}
						catch (Exception ee)
						{
						}

						toolbox[toolname] = i;
					}
					else if (key.StartsWith(STRING_PROP_PREFIX))
					{
						String toolname = key.Substring(STRING_PROP_PREFIX.Length);
						toolbox[toolname] = val;
					}
					else if (key.StartsWith(TOOLBOX_NAME))
					{
						toolboxname = val;
					}
				}

				toolContext = new VelocityContext();
				toolContext.Put(toolboxname, toolbox);
			}

		}

		/// <summary>
		/// Convenience function.  See...
		/// </summary>
		public virtual void SetStylesheet(String value)
		{
			SetStylesheet(new FileInfo(value));
		}

		/// <summary>
		/// Convenience function.  See...
		/// </summary>
		public virtual void SetStylesheet(FileInfo value)
		{
			StreamReader fr = null;

			try
			{
				fr = new StreamReader(value.FullName);
				SetStylesheet(fr);
			}
			catch (Exception e)
			{
				throw;
			}
			finally
			{
				if (fr != null)
				{
					fr.Close();
				}
			}
		}


		/// <summary>
		/// <p>
		/// Sets the stylesheet for this transformation set
		/// </p>
		/// 
		/// <p>
		/// Note that don't need this for each document you want
		/// to transform.  Just do it once, and transform away...
		/// </p>
		/// </summary>
		/// <param name="styleReader">Reader with stylesheet char stream</param>
		public virtual void SetStylesheet(TextReader value)
		{
			ready = false;
			/*
	    *  now initialize Velocity - we need to do that
	    *  on change of stylesheet
	    */
			ve = new VelocityEngine();

			/*
	    * if there are user properties, set those first - carefully
	    */

			if (velConfig != null)
			{
				ConfigureVelocityEngine(ve, velConfig);
			}

			/*
	    *  register our template() directive
	    */

			ve.SetProperty("userdirective", "NVelocity.Dvsl.Directive.MatchDirective;NVelocity");
			ve.Init();

			/*
	    *  add our template accumulator
	    */

			ve.SetApplicationAttribute("NVelocity.Dvsl.TemplateHandler", templateHandler);

			/*
	    *  load and render the stylesheet
	    *
	    *  this sets stylesheet specific context
	    *  values
	    */

			StringWriter junkWriter = new StringWriter();

			styleContext = new VelocityContext();
			ve.Evaluate(styleContext, junkWriter, "DVSL:stylesheet", value);

			/*
	    *  now run the base template through for the rules
	    */

			// TODO - use ResourceLocator or something else - I don't like the path to the resource
			Stream s = this.GetType().Assembly.GetManifestResourceStream("NVelocity.Dvsl.Resource.defaultroot.dvsl");

			if (s == null)
			{
				Console.Out.WriteLine("DEFAULT TRANSFORM RULES NOT FOUND ");
			}
			else
			{
				ve.Evaluate(new VelocityContext(), junkWriter, "defaultroot.dvsl", new StreamReader(s));
				s.Close();
			}

			/*
	    *  need a new transformer, as it depends on the
	    *  velocity engine
	    */

			transformer = new Transformer(ve, templateHandler, baseContext, appVals, validate);
		}

		/// <summary>
		/// <p>
		/// Add mapped properties from hashtable on VelocityEngine.
		/// </p>
		/// <p>
		/// If you are going to use this, ensure you do it *before* setting
		/// the stylesheet, as that creates the VelocityEngine
		/// </p>
		/// </summary>
		private void ConfigureVelocityEngine(VelocityEngine ve, Hashtable map)
		{
			if (ve == null || map == null)
			{
				return;
			}

			foreach (DictionaryEntry entry in map)
			{
				ve.SetProperty((String) entry.Key, entry.Value);
			}
		}

		/// <summary>  
		/// sets up all the context goodies
		/// </summary>
		protected internal virtual void MakeReady()
		{
			/*
	    *  put all the contexts together
	    */
			baseContext.ClearContexts();

			baseContext.AddContext(userContext);
			baseContext.AddContext(toolContext);
			baseContext.StyleContext = styleContext;

			ready = true;
		}

		/// <summary>
		/// does the transformation of the inputstream into
		/// the output writer
		/// </summary>
		protected internal virtual long XForm(TextReader reader, TextWriter writer)
		{
			if (!ready)
			{
				MakeReady();
			}

			return transformer.Transform(reader, writer);
		}

		protected internal virtual long XForm(XmlDocument dom4jdoc, TextWriter writer)
		{
			if (!ready)
			{
				MakeReady();
			}

			return transformer.Transform(dom4jdoc, writer);
		}

		public virtual long Transform(FileInfo f, TextWriter writer)
		{
			StreamReader reader = null;

			try
			{
				reader = new StreamReader(f.FullName);
				return XForm(reader, writer);
			}
			catch (Exception e)
			{
				throw e;
			}
			finally
			{
				if (reader != null)
				{
					reader.Close();
				}
			}
		}

		public virtual long Transform(TextReader reader, TextWriter writer)
		{
			return XForm(reader, writer);
		}

		public virtual long Transform(Stream stream, TextWriter writer)
		{
			return XForm(new StreamReader(stream), writer);
		}

		/// <summary>
		/// Transforms the given dom4j Document into the writer.
		/// </summary>
		/// <param name="dom4jdoc">dom4j Document object</param>
		/// <param name="writer">Writer for output</param>
		public virtual long Transform(XmlDocument dom4jdoc, TextWriter writer)
		{
			return XForm(dom4jdoc, writer);
		}

		public virtual long Transform(String infile, TextWriter writer)
		{
			StreamReader reader = null;

			try
			{
				reader = new StreamReader(infile);
				return XForm(reader, writer);
			}
			catch (Exception e)
			{
				throw e;
			}
			finally
			{
				if (reader != null)
				{
					reader.Close();
				}
			}
		}


		/// <summary>
		/// Gets the application value for the specified key
		/// </summary>
		/// <param name="key">key to use to retrieve value</param>
		/// <returns>value if found, null otherwise</returns>
		public virtual Object GetAppValue(Object key)
		{
			return appVals[key];
		}

		/// <summary>
		/// Sets the application value for the specified key
		/// </summary>
		/// <param name="key">key to use to store value</param>
		/// <param name="value">value to be stored</param>
		/// <returns>old value if any, null otherwise</returns>
		public virtual Object PutAppValue(Object key, Object value)
		{
			return appVals[key] = value;
		}

		/// <summary>
		/// <p>
		/// Allows command-line access.
		/// </p>
		/// <p>
		/// Usage :  Dvsl.exe -STYLE stylesheeet [-IN infile] [-OUT outfile] [-TOOL toolboxname]
		/// </p>
		/// </summary>
		[STAThread]
		public static void Main(String[] args)
		{
			Dvsl dvsl = new Dvsl();

			TextReader reader = Console.In;
			String infile = null;
			String style = null;
			String outfile = null;
			TextWriter writer = Console.Out;
			String toolfile = null;

			for (int i = 0; i < args.Length; i++)
			{
				if (args[i].Equals("-IN"))
					infile = args[++i];
				else if (args[i].Equals("-OUT"))
					outfile = args[++i];
				else if (args[i].Equals("-STYLE"))
					style = args[++i];
				else if (args[i].Equals("-TOOL"))
					toolfile = args[++i];
			}

			if (style == null)
			{
				Console.Out.WriteLine("usage :need to specify a stylesheet. ");
				Console.Out.WriteLine("Dvsl.exe -STYLE stylesheeet [-IN infile] [-OUT outfile] [-TOOL toolboxname]");
				return;
			}

			if (style != null)
				dvsl.SetStylesheet(style);

			if (toolfile != null)
			{
				ExtendedProperties p = new ExtendedProperties();
				Stream fis = new FileStream(toolfile, FileMode.Open, FileAccess.Read);
				p.Load(fis);

				dvsl.Toolbox = p;
			}

			if (infile != null)
				reader = new StreamReader(infile);

			if (outfile != null)
				writer = new StreamWriter(outfile);

			long time = dvsl.Transform(reader, writer);
			writer.Flush();
		}


	}
}
--- NEW FILE: DvslNodeImpl.cs ---
namespace NVelocity.Dvsl
{
	using System;
	using System.Collections;
	using System.IO;
	using System.Xml;

	/// <summary>
	/// wrapper class for .Net nodes to implement the 
	/// DVSLNode interface for template use
	/// </summary>
	/// <author> <a href="mailto:ge...@ap...">Geir Magnusson Jr.</a></author>
	public class DvslNodeImpl : DvslNode
	{
		protected internal XmlNode element = null;
		protected internal Hashtable attributes = null;

		/// <summary>
		/// this is a bit yecchy - need to revamp
		/// </summary>
		public DvslNodeImpl(XmlElement e)
		{
			element = e;
		}

		public DvslNodeImpl(XmlDocument e)
		{
			element = e;
		}

		public DvslNodeImpl(XmlText e)
		{
			element = e;
		}

		public DvslNodeImpl(XmlAttribute e)
		{
			element = e;
		}

		public DvslNodeImpl(XmlComment e)
		{
			element = e;
		}

		public DvslNodeImpl(XmlCDataSection e)
		{
			element = e;
		}

		public DvslNodeImpl()
		{
		}


		public virtual Object NodeImpl
		{
			get { return element; }
		}


		public virtual Hashtable AttribMap
		{
			get
			{
				/* 
		*  $$$ GMJ sync issue? yes.  Do I care?
		*/
				if (attributes == null)
				{
					attributes = new Hashtable();
				}

				/*
		* only Elements have attributes
		*/
				if (element is XmlElement)
				{
					XmlElement e = (XmlElement) element;
					foreach (XmlAttribute at in e.Attributes)
					{
						attributes[at.Name] = at.Value;
					}
				}

				return attributes;
			}

		}

		/// <summary>
		/// returns the name of the node
		/// </summary>
		public virtual String Name
		{
			get { return element.Name; }
		}

		/// <summary>
		/// returns a specificed attributeattribute
		/// </summary>
		public virtual String Attribute(String attribute)
		{
			if (element is XmlElement)
			{
				return ((XmlElement) element).Attributes[attribute].Value;
			}

			return null;
		}

		/// <summary>
		/// returns a list of nodes that satisfy the xpath
		/// </summary>
		public virtual IList SelectNodes(String xpath)
		{
			XmlNodeList l = element.SelectNodes(xpath);
			IList list = new ArrayList();

			for (int i = 0; i < l.Count; i++)
			{
				XmlNode n = l[i];
				if (n != null)
				{
					DvslNode dn = MakeDvslNode(n);
					if (dn != null)
					{
						list.Add(dn);
					}
				}
			}

			return list;
		}

		public virtual DvslNode SelectSingleNode(String xpath)
		{
			XmlNode n = element.SelectSingleNode(xpath);
			return MakeDvslNode(n);
		}

		public virtual DvslNode Get(String xpath)
		{
			return SelectSingleNode(xpath);
		}

		public virtual String Value
		{
			get { return element.InnerText; }
		}

		public virtual Object ValueOf(String xpath)
		{
			Object o = element.CreateNavigator().Evaluate(xpath);
			return o;
		}

		public override String ToString()
		{
			return Value;
		}

		public virtual IList Children()
		{
			IList list = new ArrayList();

			if (element.NodeType == XmlNodeType.Element)
			{
				XmlNodeList nodes = ((XmlElement) element).ChildNodes;

				for (int i = 0; i < nodes.Count; i++)
					list.Add(MakeDvslNode(nodes[i]));
			}

			return list;
		}

		/// <summary>
		/// assumes a list of DVSLNodes
		/// </summary>
		public virtual String Copy(IList nodes)
		{
			if (nodes == null)
				return "";

			StringWriter sw = new StringWriter();

			for (int i = 0; i < nodes.Count; i++)
			{
				DvslNode dn = (DvslNode) nodes[i];
				sw.Write(((XmlNode) dn.NodeImpl).OuterXml);
			}

			return sw.ToString();
		}

		public virtual String Copy()
		{
			return element.OuterXml;
		}

		public virtual String Render()
		{
			try
			{
				StringWriter sw = new StringWriter();
				XmlTextWriter tw = new XmlTextWriter(sw);
				element.WriteContentTo(tw);
				return tw.ToString();
			}
			catch (Exception e)
			{
			}

			return "";
		}

		public virtual String Attrib(String name)
		{
			if (element is XmlElement)
			{
				XmlAttribute attrib = ((XmlElement) element).Attributes[name];

				if (attrib != null)
				{
					return attrib.Value;
				}
			}

			return null;
		}


		/// <summary>
		/// will recast all of this later
		/// </summary>
		private DvslNode MakeDvslNode(XmlNode n)
		{
			if (n == null)
			{
				return null;
			}

			if (n.NodeType == XmlNodeType.Element)
			{
				return new DvslNodeImpl((XmlElement) n);
			}
			else if (n.NodeType == XmlNodeType.Text)
			{
				return new DvslNodeImpl((XmlText) n);
			}
			else if (n.NodeType == XmlNodeType.Attribute)
			{
				return new DvslNodeImpl((XmlAttribute) n);
			}
			else if (n.NodeType == XmlNodeType.Comment)
			{
				return new DvslNodeImpl((XmlComment) n);
			}
			else if (n.NodeType == XmlNodeType.CDATA)
			{
				return new DvslNodeImpl((XmlCDataSection) n);
			}
			else if (n.NodeType == XmlNodeType.ProcessingInstruction)
			{
				// not a supported node type
				return null;
			}

			//TODO: log the unknown node type so that it can be determined is something is missing
			return null;
		}


	}
}
--- NEW FILE: DvslNode.cs ---
namespace NVelocity.Dvsl
{
	using System;
	using System.Collections;

	/// <summary>
	/// wrapper interface for nodes exposed in the
	/// template.  Isolates the in-VSL DOM from that
	/// of the underlying implementation
	/// </summary>
	/// <author> <a href="mailto:ge...@ap...">Geir Magnusson Jr.</a></author>
	public interface DvslNode
	{
		/// <summary>
		/// returns the name of the node
		/// </summary>
		String Name { get; }

		/// <summary>
		/// returns the 'value' of the node
		/// </summary>
		String Value { get; }

		/// <summary>
		/// returns the value of the XPath
		/// expression
		/// </summary>
		Object ValueOf(String xpath);

		/// <summary>
		/// returns attribute
		/// </summary>
		String Attrib(String attribute);

		/// <summary>
		/// returns a list of nodes that satisfy
		/// the xpath
		/// </summary>
		IList SelectNodes(String xpath);

		/// <summary>  returns a single node that satisfies
		/// the xpath
		/// </summary>
		DvslNode SelectSingleNode(String xpath);

		DvslNode Get(String xpath);

		/// <summary>
		/// renders a deep copy of the XML tree
		/// below the current node to the output
		/// </summary>
		String Copy();

		/// <summary>
		/// renders a deep copy of the nodes in
		/// the list ot the output
		/// </summary>
		String Copy(IList nodeList);

		/// <summary>
		/// returns a list of all children of the current node
		/// </summary>
		IList Children();

		/// <summary>
		/// returns the 'value' of the node
		/// </summary>
		String ToString();

		/// <summary>
		/// returns the object corresponding to the node
		/// in the implementaion that we are using.
		/// use only with the greatest of care
		/// </summary>
		Object NodeImpl { get; }

		Hashtable AttribMap { get; }

	}
}

[Adapdev-commits] Adapdev/src/Adapdev.NVelocity/Dvsl Dvsl.cs,1.4,1.5 DvslContext.cs,1.4,1.5 DvslNode

[Adapdev-commits] Adapdev/src/Adapdev.NVelocity/Dvsl Dvsl.cs,1.4,1.5 DvslContext.cs,1.4,1.5 DvslNode.cs,1.4,1.5 DvslNodeContext.cs,1.4,1.5 DvslNodeImpl.cs,1.4,1.5 TransformTool.cs,1.4,1.5 Transformer.cs,1.4,1.5