Moved out the xml system again. I think that if I am going to do it again,

I'm going to do it over from scratch, that was just painful.  Also, started in
again on the server system, it's looking pretty good, already got connections
working, next up is managing data flow through clients and protocols!

1 files changed, 144 insertions, 0 deletions

diff --git a/src/old/xmlreader.h b/src/old/xmlreader.h
new file mode 100644
index 0000000..7c85ddb
--- /dev/null
+++ b/src/old/xmlreader.h
@@ -0,0 +1,144 @@
+#ifndef XMLREADER
+#define XMLREADER
+
+#include <stdio.h>
+#include "bu/xmldocument.h"
+#include "bu/hash.h"
+#include "bu/fstring.h"
+#include "bu/stream.h"
+
+/**
+ * Takes care of reading in xml formatted data from a file.  This could/should
+ * be made more arbitrary in the future so that we can read the data from any
+ * source.  This is actually made quite simple already since all data read in
+ * is handled by one single helper function and then palced into a FlexBuf for
+ * easy access by the other functions.  The FlexBuf also allows for block
+ * reading from disk, which improves speed by a noticable amount.
+ * <br>
+ * There are also some extra features implemented that allow you to break the
+ * standard XML reader specs and eliminate leading and trailing whitespace in
+ * all read content.  This is useful in situations where you allow additional
+ * whitespace in the files to make them easily human readable.  The resturned
+ * content will be NULL in sitautions where all content between nodes was
+ * stripped.
+ *@author Mike Buland
+ */
+class XmlReader : public XmlDocument
+{
+public:
+        /**
+         * Create a standard XmlReader.  The optional parameter bStrip allows you to
+         * create a reader that will strip out all leading and trailing whitespace
+         * in content, a-la html.
+         *@param bStrip Strip out leading and trailing whitespace?
+         */
+        XmlReader( Bu::Stream &sIn, bool bStrip=false );
+
+        /**
+         * Destroy this XmlReader.
+         */
+        virtual ~XmlReader();
+
+        /**
+         * Build a document based on some kind of input.  This is called
+         * automatically by the constructor.
+         */
+        bool buildDoc();
+
+private:
+        /**
+         * This is called by the low level automoton in order to get the next
+         * character.  This function should return a character at the current
+         * position plus nIndex, but does not increment the current character.
+         *@param nIndex The index of the character from the current stream position.
+         *@returns A single character at the requested position, or 0 for end of
+         * stream.
+         */
+        virtual char getChar( int nIndex = 0 );
+
+        /**
+         * Called to increment the current stream position by a single character.
+         */
+        virtual void usedChar( int nAmnt = 1 );
+
+        /**
+         * Automoton function: is whitespace.
+         *@param chr A character
+         *@returns True if chr is whitespace, false otherwise.
+         */
+        bool isws( char chr );
+
+        /**
+         * Automoton function: ws.  Skips sections of whitespace.
+         *@returns True if everything was ok, False for end of stream.
+         */
+        bool ws();
+
+        /**
+         * Automoton function: node.  Processes an XmlNode
+         *@returns True if everything was ok, False for end of stream.
+         */
+        bool node();
+
+        /**
+         * Automoton function: startNode.  Processes the begining of a node.
+         *@returns True if everything was ok, False for end of stream.
+         */
+        bool startNode();
+
+        /**
+         * Automoton function: name.  Processes the name of a node.
+         *@returns True if everything was ok, False for end of stream.
+         */
+        bool name();
+
+        /**
+         * Automoton function: textDecl.  Processes the xml text decleration, if
+         * there is one.
+         */
+        void textDecl();
+
+        /**
+         * Automoton function: entity.  Processes an entity from the header.
+         */
+        void entity();
+
+        /**
+         * Adds an entity to the list, if it doesn't already exist.
+         *@param name The name of the entity
+         *@param value The value of the entity
+         */
+        void addEntity( const Bu::FString &name, const Bu::FString &value );
+
+        Bu::FString getEscape();
+
+        /**
+         * Automoton function: paramlist.  Processes a list of node params.
+         *@returns True if everything was ok, False for end of stream.
+         */
+        bool paramlist();
+
+        /**
+         * Automoton function: param.  Processes a single parameter.
+         *@returns True if everything was ok, False for end of stream.
+         */
+        bool param();
+
+        /**
+         * Automoton function: content.  Processes node content.
+         *@returns True if everything was ok, False for end of stream.
+         */
+        bool content();
+        
+        Bu::FString sContent;           /**< buffer for the current node's content. */
+        Bu::FString sParamName;         /**< buffer for the current param's name. */
+        Bu::FString sParamValue;        /**< buffer for the current param's value. */
+        Bu::Stream &sIn;
+        bool bStrip;                    /**< Are we stripping whitespace? */
+
+        Bu::Hash<Bu::FString,Bu::FString> htEntity;             /**< Entity type definitions. */
+
+        Bu::FString sBuf;
+};
+
+#endif