From 9d751504d56ee9591a5094d570555367d814c614 Mon Sep 17 00:00:00 2001
From: Daniel Veillard <veillard@src.gnome.org>
Date: Wed, 29 Oct 2003 13:21:47 +0000
Subject: [PATCH] applied patch from Steve Ball to make a schema parser from a
 preparsed

* xmlschemas.c include/libxml/xmlschemas.h: applied patch
  from Steve Ball to make a schema parser from a preparsed document.
Daniel
---
 ChangeLog                   |  5 +++++
 include/libxml/xmlschemas.h |  2 ++
 xmlschemas.c                | 31 +++++++++++++++++++++++++++++++
 3 files changed, 38 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index b50623e6..df97fd84 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Oct 29 14:20:14 CET 2003 Daniel Veillard <daniel@veillard.com>
+
+	* xmlschemas.c include/libxml/xmlschemas.h: applied patch
+	  from Steve Ball to make a schema parser from a preparsed document.
+
 Wed Oct 29 13:52:25 CET 2003 Daniel Veillard <daniel@veillard.com>
 
 	* tree.c: applied a couple of patches from Mark Lilback about text
diff --git a/include/libxml/xmlschemas.h b/include/libxml/xmlschemas.h
index 0e563f4e..ea469a33 100644
--- a/include/libxml/xmlschemas.h
+++ b/include/libxml/xmlschemas.h
@@ -77,6 +77,8 @@ XMLPUBFUN xmlSchemaParserCtxtPtr XMLCALL
 XMLPUBFUN xmlSchemaParserCtxtPtr XMLCALL 
 	    xmlSchemaNewMemParserCtxt	(const char *buffer,
 					 int size);
+XMLPUBFUN xmlSchemaParserCtxtPtr XMLCALL
+	    xmlSchemaNewDocParserCtxt	(xmlDocPtr doc);
 XMLPUBFUN void XMLCALL		
 	    xmlSchemaFreeParserCtxt	(xmlSchemaParserCtxtPtr ctxt);
 XMLPUBFUN void XMLCALL		
diff --git a/xmlschemas.c b/xmlschemas.c
index 7c6c5fbe..f64c1b5e 100644
--- a/xmlschemas.c
+++ b/xmlschemas.c
@@ -3183,6 +3183,35 @@ xmlSchemaNewMemParserCtxt(const char *buffer, int size)
     return (ret);
 }
 
+/**
+ * xmlSchemaNewDocParserCtxt:
+ * @doc:  a preparsed document tree
+ *
+ * Create an XML Schemas parse context for that document.
+ * NB. The document may be modified during the parsing process.
+ *
+ * Returns the parser context or NULL in case of error
+ */
+xmlSchemaParserCtxtPtr
+xmlSchemaNewDocParserCtxt(xmlDocPtr doc)
+{
+    xmlSchemaParserCtxtPtr ret;
+
+    if (doc == NULL)
+      return (NULL);
+
+    ret = (xmlSchemaParserCtxtPtr) xmlMalloc(sizeof(xmlSchemaParserCtxt));
+    if (ret == NULL) {
+      xmlSchemaPErrMemory(NULL, "allocating schema parser context",
+			  NULL);
+      return (NULL);
+    }
+    memset(ret, 0, sizeof(xmlSchemaParserCtxt));
+    ret->doc = doc;
+
+    return (ret);
+}
+
 /**
  * xmlSchemaFreeParserCtxt:
  * @ctxt:  the schema parser context
@@ -4224,6 +4253,8 @@ xmlSchemaParse(xmlSchemaParserCtxtPtr ctxt)
         }
         doc->URL = xmlStrdup(BAD_CAST "in_memory_buffer");
         ctxt->URL = xmlStrdup(BAD_CAST "in_memory_buffer");
+    } else if (ctxt->doc != NULL) {
+        doc = ctxt->doc;
     } else {
 	xmlSchemaPErr(ctxt, NULL,
 		      XML_SCHEMAP_NOTHING_TO_PARSE,