Just a few things re-arranged, moved the new taf/xml systems to the inprogress

directory, and moved the old xml system in, so it will require heavy changes.

1 files changed, 121 insertions, 0 deletions

diff --git a/src/inprogress/xmlreader.h b/src/inprogress/xmlreader.h
new file mode 100644
index 0000000..708a386
--- /dev/null
+++ b/src/inprogress/xmlreader.h
@@ -0,0 +1,121 @@
+#ifndef XML_READER_H
+#define XML_READER_H
+
+#include <stdint.h>
+#include "bu/stream.h"
+#include "bu/fstring.h"
+#include "bu/xmlnode.h"
+
+namespace Bu
+{
+        /**
+         * An Xml 1.1 reader.  I've decided to write this, this time, based on the
+         * official W3C reccomendation, now included with the source code.  I've
+         * named the productions in the parser states the same as in that document,
+         * which may make them easier to find, etc, although possibly slightly less
+         * optimized than writing my own reduced grammer.
+         *
+         * Below I will list differences between my parser and the official standard
+         * as I come up with them.
+         *  - Encoding and Standalone headings are ignored for the moment. (4.3.3,
+         *    2.9)
+         *  - The standalone heading attribute can have any standard whitespace
+         *    before it (the specs say only spaces, no newlines). (2.9)
+         *  - Since standalone is ignored, it is currently allowed to have any
+         *    value (should be restricted to "yes" or "no"). (2.9)
+         *  - Currently only UTF-8 / ascii are parsed.
+         *  - [optional] The content of comments is thrown away. (2.5)
+         *  - The content of processing instruction blocks is parsed properly, but
+         *    thrown away. (2.6)
+         */
+        class XmlReader
+        {
+        public:
+                XmlReader( Bu::Stream &sIn );
+                virtual ~XmlReader();
+
+                XmlNode *read();
+
+        private:
+                Bu::Stream &sIn;
+                Bu::FString sBuf;
+
+        private: // Helpers
+                const char *lookahead( int nAmnt );
+                void burn( int nAmnt );
+                void checkString( const char *str, int nLen );
+
+        private: // States
+                /**
+                 * The headers, etc.
+                 */
+                void prolog();
+
+                /**
+                 * The xml decleration (version, encoding, etc).
+                 */
+                void XMLDecl();
+
+                /**
+                 * Misc things, Includes Comments and PIData (Processing Instructions).
+                 */
+                void Misc();
+
+                /**
+                 * Comments
+                 */
+                void Comment();
+
+                /**
+                 * Processing Instructions
+                 */
+                void PI();
+
+                /**
+                 * Whitespace eater.
+                 */
+                void S();
+
+                /**
+                 * Optional whitespace eater.
+                 */
+                void Sq();
+
+                /**
+                 * XML Version spec
+                 */
+                void VersionInfo();
+
+                /**
+                 * Your basic equals sign with surrounding whitespace.
+                 */
+                void Eq();
+
+                /**
+                 * Read in an attribute value.
+                 */
+                FString AttValue();
+
+                /**
+                 * Read in the name of something.
+                 */
+                FString Name();
+
+                /**
+                 * Encoding decleration in the header
+                 */
+                void EncodingDecl();
+
+                /**
+                 * Standalone decleration in the header
+                 */
+                void SDDecl();
+
+                bool isS( unsigned char c )
+                {
+                        return ( c == 0x20 || c == 0x9 || c == 0xD || c == 0xA );
+                }
+        };
+}
+
+#endif