integrated the xmlDocWalker API given by Alfred Mickautsch, and providing

* Makefile.am configure.in xmldwalk.c include/libxml/Makefile.am
  include/libxml/xmldwalk.h include/libxml/xmlversion.h.in:
  integrated the xmlDocWalker API given by Alfred Mickautsch,
  and providing an xmlReader like API but working on a xmlDocPtr.
Daniel

ChangeLog

@@ -1,3 +1,10 @@
+Sat Oct  4 01:58:27 CEST 2003 Daniel Veillard <daniel@veillard.com>
+
+	* Makefile.am configure.in xmldwalk.c include/libxml/Makefile.am
+	  include/libxml/xmldwalk.h include/libxml/xmlversion.h.in:
+	  integrated the xmlDocWalker API given by Alfred Mickautsch,
+	  and providing an xmlReader like API but working on a xmlDocPtr.
+
 Sat Oct  4 00:18:29 CEST 2003 Daniel Veillard <daniel@veillard.com>
 
 	* Makefile.am: more cleanup in make tests

Makefile.am

@@ -27,7 +27,7 @@ libxml2_la_SOURCES = SAX.c entities.c encoding.c error.c parserInternals.c  \
 		catalog.c globals.c threads.c c14n.c \
 		xmlregexp.c xmlschemas.c xmlschemastypes.c xmlunicode.c \
 		triostr.c trio.c xmlreader.c relaxng.c dict.c SAX2.c \
-		legacy.c
+		legacy.c walker.c
 else
 libxml2_la_SOURCES = SAX.c entities.c encoding.c error.c parserInternals.c  \
 		parser.c tree.c hash.c list.c xmlIO.c xmlmemory.c uri.c  \
@@ -36,7 +36,7 @@ libxml2_la_SOURCES = SAX.c entities.c encoding.c error.c parserInternals.c  \
 		catalog.c globals.c threads.c c14n.c \
 		xmlregexp.c xmlschemas.c xmlschemastypes.c xmlunicode.c \
 		xmlreader.c relaxng.c dict.c SAX2.c \
-		legacy.c
+		legacy.c xmldwalk.c
 endif
 
 DEPS = $(top_builddir)/libxml2.la

configure.in

@@ -637,6 +637,23 @@ fi
 AC_SUBST(WITH_SAX1)
 AC_SUBST(TEST_SAX)
 
+AC_ARG_WITH(walker,
+[  --with-walker             add the xmlDocWalker interface (on)])
+if test "$with_minimum" = "yes" -a "$with_walker" = ""
+then
+    with_walker=no
+fi
+if test "$with_walker" = "no" ; then
+    echo Disabling the xmlDocWalker interface
+    WITH_WALKER=0
+    TEST_WALKER=
+else    
+    WITH_WALKER=1
+    TEST_WALKER=WALKERtests
+fi
+AC_SUBST(WITH_WALKER)
+AC_SUBST(TEST_WALKER)
+
 AC_ARG_WITH(push,
 [  --with-push             add the PUSH parser interfaces (on)])
 if test "$with_minimum" = "yes" -a "$with_push" = ""

include/libxml/Makefile.am

@@ -42,7 +42,8 @@ xmlinc_HEADERS = \
 		relaxng.h \
 		dict.h \
 		SAX2.h \
-		xmlexports.h
+		xmlexports.h \
+		xmldwalk.h
 
 install-exec-hook:
 	$(mkinstalldirs) $(DESTDIR)$(xmlincdir)

include/libxml/xmldwalk.h

@@ -0,0 +1,116 @@
+/*
+ * xmldwalk.h : Interfaces, constants and types of the document traversing API.for XML
+ *
+ * this is heavily based upon the xmlTextReader streaming node API
+ * of libxml2 by Daniel Veillard (daniel@veillard.com). In fact I
+ * just copied and modified xmlreader.h
+ *
+ * So for license and disclaimer see the license and disclaimer of
+ * libxml2.
+ *
+ * alfred@mickautsch.de
+ */
+
+#ifndef __XML_XMLDWALK_H__
+#define __XML_XMLDWALK_H__
+
+#include <libxml/xmlversion.h>
+#include <libxml/tree.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    XML_DWALK_NONE = 0,
+    XML_DWALK_START,
+    XML_DWALK_BACKTRACK,
+    XML_DWALK_END
+} xmlDocWalkerState;
+
+typedef struct _xmlDocWalker xmlDocWalker;
+typedef xmlDocWalker *xmlDocWalkerPtr;
+
+/*
+ * Constructor & Destructor
+ */
+XMLPUBFUN xmlDocWalkerPtr XMLCALL
+		xmlNewDocWalker			(xmlDocPtr doc);
+XMLPUBFUN void XMLCALL
+		xmlFreeDocWalker		(xmlDocWalkerPtr iter);
+
+/*
+ * Iterator Functions
+ */
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerRewind		(xmlDocWalkerPtr iter);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerStep		(xmlDocWalkerPtr iter);
+
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerAttributeCount	(xmlDocWalkerPtr iter);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerDepth		(xmlDocWalkerPtr iter);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerHasAttributes	(xmlDocWalkerPtr iter);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerHasValue		(xmlDocWalkerPtr iter);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerIsEmptyElement	(xmlDocWalkerPtr iter);
+XMLPUBFUN xmlChar * XMLCALL
+		xmlDocWalkerLocalName		(xmlDocWalkerPtr iter);
+XMLPUBFUN xmlChar * XMLCALL
+		xmlDocWalkerName		(xmlDocWalkerPtr iter);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerNodeType		(xmlDocWalkerPtr iter);
+XMLPUBFUN xmlChar * XMLCALL
+		xmlDocWalkerPrefix		(xmlDocWalkerPtr iter);
+XMLPUBFUN xmlChar * XMLCALL
+		xmlDocWalkerNamespaceUri	(xmlDocWalkerPtr iter);
+XMLPUBFUN xmlChar * XMLCALL
+		xmlDocWalkerBaseUri		(xmlDocWalkerPtr iter);
+XMLPUBFUN xmlChar * XMLCALL
+		xmlDocWalkerValue		(xmlDocWalkerPtr iter);
+
+XMLPUBFUN xmlChar * XMLCALL
+		xmlDocWalkerGetAttributeNo	(xmlDocWalkerPtr iter,
+						 int no);
+XMLPUBFUN xmlChar * XMLCALL
+		xmlDocWalkerGetAttribute	(xmlDocWalkerPtr iter,
+						 const xmlChar *name);
+XMLPUBFUN xmlChar * XMLCALL
+		xmlDocWalkerGetAttributeNs	(xmlDocWalkerPtr iter,
+						 const xmlChar *localName,
+						 				 const xmlChar *namespaceURI);
+XMLPUBFUN xmlChar * XMLCALL
+		xmlDocWalkerLookupNamespace	(xmlDocWalkerPtr iter,
+						 const xmlChar *prefix);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerMoveToAttributeNo	(xmlDocWalkerPtr iter,
+						 int no);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerMoveToAttribute	(xmlDocWalkerPtr iter,
+						 const xmlChar *name);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerMoveToAttributeNs	(xmlDocWalkerPtr iter,
+						 const xmlChar *localName,
+						 const xmlChar *namespaceURI);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerMoveToFirstAttribute(xmlDocWalkerPtr iter);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerMoveToNextAttribute	(xmlDocWalkerPtr iter);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerMoveToElement	(xmlDocWalkerPtr iter);
+
+xmlNodePtr
+		xmlDocWalkerCurrentNode		(xmlDocWalkerPtr iter);
+xmlDocPtr
+		xmlDocWalkerCurrentDoc		(xmlDocWalkerPtr iter);
+XMLPUBFUN int XMLCALL
+		xmlDocWalkerNext		(xmlDocWalkerPtr iter);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_XMLDWALK_H__ */

include/libxml/xmlversion.h.in

@@ -128,6 +128,15 @@ XMLPUBFUN void XMLCALL xmlCheckVersion(int version);
 #define LIBXML_SAX1_ENABLED
 #endif
 
+/**
+ * LIBXML_WALKER_ENABLED:
+ *
+ * Whether the xmlDocWalker interface is configured in
+ */
+#if @WITH_WALKER@
+#define LIBXML_WALKER_ENABLED
+#endif
+
 /**
  * LIBXML_FTP_ENABLED:
  *