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kc3-lang/libxml2/debugXML.c

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  • Author : Daniel Veillard
    Date : 2002-03-18 19:37:11
    Hash : 34ce8bec
    Message : preparing 2.4.18 updated and rebuilt the web site implement the new * configure.in: preparing 2.4.18 * doc/*: updated and rebuilt the web site * *.c libxml.h: implement the new IN_LIBXML scheme discussed with the Windows and Cygwin maintainers. * parser.c: humm, changed the way the SAX parser work when xmlSubstituteEntitiesDefault(1) is set, it will then do the entity registration and loading by itself in case the user provided SAX getEntity() returns NULL. * testSAX.c: added --noent to test the behaviour. Daniel

  • debugXML.c
  • /*
     * debugXML.c : This is a set of routines used for debugging the tree
     *              produced by the XML parser.
     *
     * See Copyright for the status of this software.
     *
     * Daniel Veillard <daniel@veillard.com>
     */
    
    #define IN_LIBXML
    #include "libxml.h"
    #ifdef LIBXML_DEBUG_ENABLED
    
    #include <string.h>
    #ifdef HAVE_STDLIB_H
    #include <stdlib.h>
    #endif
    #ifdef HAVE_STRING_H
    #include <string.h>
    #endif
    #include <libxml/xmlmemory.h>
    #include <libxml/tree.h>
    #include <libxml/parser.h>
    #include <libxml/parserInternals.h>
    #include <libxml/valid.h>
    #include <libxml/debugXML.h>
    #include <libxml/HTMLtree.h>
    #include <libxml/HTMLparser.h>
    #include <libxml/xmlerror.h>
    #include <libxml/globals.h>
    #include <libxml/xpathInternals.h>
    
    /**
     * xmlDebugDumpString:
     * @output:  the FILE * for the output
     * @str:  the string
     *
     * Dumps informations about the string, shorten it if necessary
     */
    void
    xmlDebugDumpString(FILE * output, const xmlChar * str)
    {
        int i;
    
        if (output == NULL)
    	output = stdout;
        if (str == NULL) {
            fprintf(output, "(NULL)");
            return;
        }
        for (i = 0; i < 40; i++)
            if (str[i] == 0)
                return;
            else if (IS_BLANK(str[i]))
                fputc(' ', output);
            else if (str[i] >= 0x80)
                fprintf(output, "#%X", str[i]);
            else
                fputc(str[i], output);
        fprintf(output, "...");
    }
    
    static void
    xmlDebugDumpDtdNode(FILE *output, xmlDtdPtr dtd, int depth) {
        int i;
        char shift[100];
    
        for (i = 0;((i < depth) && (i < 25));i++)
            shift[2 * i] = shift[2 * i + 1] = ' ';
        shift[2 * i] = shift[2 * i + 1] = 0;
    
        fprintf(output, shift);
    
        if (dtd == NULL) {
    	fprintf(output, "DTD node is NULL\n");
    	return;
        }
    
        if (dtd->type != XML_DTD_NODE) {
    	fprintf(output, "PBM: not a DTD\n");
    	return;
        }
        if (dtd->name != NULL)
    	fprintf(output, "DTD(%s)", dtd->name);
        else
    	fprintf(output, "DTD");
        if (dtd->ExternalID != NULL)
    	fprintf(output, ", PUBLIC %s", dtd->ExternalID);
        if (dtd->SystemID != NULL)
    	fprintf(output, ", SYSTEM %s", dtd->SystemID);
        fprintf(output, "\n");
        /*
         * Do a bit of checking
         */
        if (dtd->parent == NULL)
    	fprintf(output, "PBM: DTD has no parent\n");
        if (dtd->doc == NULL)
    	fprintf(output, "PBM: DTD has no doc\n");
        if ((dtd->parent != NULL) && (dtd->doc != dtd->parent->doc))
    	fprintf(output, "PBM: DTD doc differs from parent's one\n");
        if (dtd->prev == NULL) {
    	if ((dtd->parent != NULL) && (dtd->parent->children != (xmlNodePtr)dtd))
    	    fprintf(output, "PBM: DTD has no prev and not first of list\n");
        } else {
    	if (dtd->prev->next != (xmlNodePtr) dtd)
    	    fprintf(output, "PBM: DTD prev->next : back link wrong\n");
        }
        if (dtd->next == NULL) {
    	if ((dtd->parent != NULL) && (dtd->parent->last != (xmlNodePtr) dtd))
    	    fprintf(output, "PBM: DTD has no next and not last of list\n");
        } else {
    	if (dtd->next->prev != (xmlNodePtr) dtd)
    	    fprintf(output, "PBM: DTD next->prev : forward link wrong\n");
        }
    }
    
    static void
    xmlDebugDumpAttrDecl(FILE *output, xmlAttributePtr attr, int depth) {
        int i;
        char shift[100];
    
        for (i = 0;((i < depth) && (i < 25));i++)
            shift[2 * i] = shift[2 * i + 1] = ' ';
        shift[2 * i] = shift[2 * i + 1] = 0;
    
        fprintf(output, shift);
    
        if (attr == NULL) {
    	fprintf(output, "Attribute declaration is NULL\n");
    	return;
        }
        if (attr->type != XML_ATTRIBUTE_DECL) {
    	fprintf(output, "PBM: not a Attr\n");
    	return;
        }
        if (attr->name != NULL)
    	fprintf(output, "ATTRDECL(%s)", attr->name);
        else
    	fprintf(output, "PBM ATTRDECL noname!!!");
        if (attr->elem != NULL)
    	fprintf(output, " for %s", attr->elem);
        else
    	fprintf(output, " PBM noelem!!!");
        switch (attr->atype) {
            case XML_ATTRIBUTE_CDATA:
    	    fprintf(output, " CDATA");
    	    break;
            case XML_ATTRIBUTE_ID:
    	    fprintf(output, " ID");
    	    break;
            case XML_ATTRIBUTE_IDREF:
    	    fprintf(output, " IDREF");
    	    break;
            case XML_ATTRIBUTE_IDREFS:
    	    fprintf(output, " IDREFS");
    	    break;
            case XML_ATTRIBUTE_ENTITY:
    	    fprintf(output, " ENTITY");
    	    break;
            case XML_ATTRIBUTE_ENTITIES:
    	    fprintf(output, " ENTITIES");
    	    break;
            case XML_ATTRIBUTE_NMTOKEN:
    	    fprintf(output, " NMTOKEN");
    	    break;
            case XML_ATTRIBUTE_NMTOKENS:
    	    fprintf(output, " NMTOKENS");
    	    break;
            case XML_ATTRIBUTE_ENUMERATION:
    	    fprintf(output, " ENUMERATION");
    	    break;
            case XML_ATTRIBUTE_NOTATION:
    	    fprintf(output, " NOTATION ");
    	    break;
        }
        if (attr->tree != NULL) {
    	int indx;
    	xmlEnumerationPtr cur = attr->tree;
    
    	for (indx = 0;indx < 5; indx++) {
    	    if (indx != 0)
    		fprintf(output, "|%s", cur->name);
    	    else
    		fprintf(output, " (%s", cur->name);
    	    cur = cur->next;
    	    if (cur == NULL) break;
    	}
    	if (cur == NULL)
    	    fprintf(output, ")");
    	else
    	    fprintf(output, "...)");
        }
        switch (attr->def) {
            case XML_ATTRIBUTE_NONE:
    	    break;
            case XML_ATTRIBUTE_REQUIRED:
    	    fprintf(output, " REQUIRED");
    	    break;
            case XML_ATTRIBUTE_IMPLIED:
    	    fprintf(output, " IMPLIED");
    	    break;
            case XML_ATTRIBUTE_FIXED:
    	    fprintf(output, " FIXED");
    	    break;
        }
        if (attr->defaultValue != NULL) {
    	fprintf(output, "\"");
    	xmlDebugDumpString(output, attr->defaultValue);
    	fprintf(output, "\"");
        }
        fprintf(output, "\n");
    
        /*
         * Do a bit of checking
         */
        if (attr->parent == NULL)
    	fprintf(output, "PBM: Attr has no parent\n");
        if (attr->doc == NULL)
    	fprintf(output, "PBM: Attr has no doc\n");
        if ((attr->parent != NULL) && (attr->doc != attr->parent->doc))
    	fprintf(output, "PBM: Attr doc differs from parent's one\n");
        if (attr->prev == NULL) {
    	if ((attr->parent != NULL) && (attr->parent->children != (xmlNodePtr)attr))
    	    fprintf(output, "PBM: Attr has no prev and not first of list\n");
        } else {
    	if (attr->prev->next != (xmlNodePtr) attr)
    	    fprintf(output, "PBM: Attr prev->next : back link wrong\n");
        }
        if (attr->next == NULL) {
    	if ((attr->parent != NULL) && (attr->parent->last != (xmlNodePtr) attr))
    	    fprintf(output, "PBM: Attr has no next and not last of list\n");
        } else {
    	if (attr->next->prev != (xmlNodePtr) attr)
    	    fprintf(output, "PBM: Attr next->prev : forward link wrong\n");
        }
    }
    
    static void
    xmlDebugDumpElemDecl(FILE *output, xmlElementPtr elem, int depth) {
        int i;
        char shift[100];
    
        for (i = 0;((i < depth) && (i < 25));i++)
            shift[2 * i] = shift[2 * i + 1] = ' ';
        shift[2 * i] = shift[2 * i + 1] = 0;
    
        fprintf(output, shift);
    
        if (elem == NULL) {
    	fprintf(output, "Element declaration is NULL\n");
    	return;
        }
        if (elem->type != XML_ELEMENT_DECL) {
    	fprintf(output, "PBM: not a Elem\n");
    	return;
        }
        if (elem->name != NULL) {
    	fprintf(output, "ELEMDECL(");
    	xmlDebugDumpString(output, elem->name);
    	fprintf(output, ")");
        } else
    	fprintf(output, "PBM ELEMDECL noname!!!");
        switch (elem->etype) {
    	case XML_ELEMENT_TYPE_UNDEFINED: 
    	    fprintf(output, ", UNDEFINED");
    	    break;
    	case XML_ELEMENT_TYPE_EMPTY: 
    	    fprintf(output, ", EMPTY");
    	    break;
    	case XML_ELEMENT_TYPE_ANY: 
    	    fprintf(output, ", ANY");
    	    break;
    	case XML_ELEMENT_TYPE_MIXED: 
    	    fprintf(output, ", MIXED ");
    	    break;
    	case XML_ELEMENT_TYPE_ELEMENT: 
    	    fprintf(output, ", MIXED ");
    	    break;
        }
        if ((elem->type != XML_ELEMENT_NODE) &&
    	(elem->content != NULL)) {
    	char buf[5001];
    
    	buf[0] = 0;
    	xmlSnprintfElementContent(buf, 5000, elem->content, 1);
    	buf[5000] = 0;
    	fprintf(output, "%s", buf);
        }
        fprintf(output, "\n");
    
        /*
         * Do a bit of checking
         */
        if (elem->parent == NULL)
    	fprintf(output, "PBM: Elem has no parent\n");
        if (elem->doc == NULL)
    	fprintf(output, "PBM: Elem has no doc\n");
        if ((elem->parent != NULL) && (elem->doc != elem->parent->doc))
    	fprintf(output, "PBM: Elem doc differs from parent's one\n");
        if (elem->prev == NULL) {
    	if ((elem->parent != NULL) && (elem->parent->children != (xmlNodePtr)elem))
    	    fprintf(output, "PBM: Elem has no prev and not first of list\n");
        } else {
    	if (elem->prev->next != (xmlNodePtr) elem)
    	    fprintf(output, "PBM: Elem prev->next : back link wrong\n");
        }
        if (elem->next == NULL) {
    	if ((elem->parent != NULL) && (elem->parent->last != (xmlNodePtr) elem))
    	    fprintf(output, "PBM: Elem has no next and not last of list\n");
        } else {
    	if (elem->next->prev != (xmlNodePtr) elem)
    	    fprintf(output, "PBM: Elem next->prev : forward link wrong\n");
        }
    }
    
    static void
    xmlDebugDumpEntityDecl(FILE *output, xmlEntityPtr ent, int depth) {
        int i;
        char shift[100];
    
        for (i = 0;((i < depth) && (i < 25));i++)
            shift[2 * i] = shift[2 * i + 1] = ' ';
        shift[2 * i] = shift[2 * i + 1] = 0;
    
        fprintf(output, shift);
    
        if (ent == NULL) {
    	fprintf(output, "Entity declaration is NULL\n");
    	return;
        }
        if (ent->type != XML_ENTITY_DECL) {
    	fprintf(output, "PBM: not a Entity decl\n");
    	return;
        }
        if (ent->name != NULL) {
    	fprintf(output, "ENTITYDECL(");
    	xmlDebugDumpString(output, ent->name);
    	fprintf(output, ")");
        } else
    	fprintf(output, "PBM ENTITYDECL noname!!!");
        switch (ent->etype) {
    	case XML_INTERNAL_GENERAL_ENTITY: 
    	    fprintf(output, ", internal\n");
    	    break;
    	case XML_EXTERNAL_GENERAL_PARSED_ENTITY: 
    	    fprintf(output, ", external parsed\n");
    	    break;
    	case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY: 
    	    fprintf(output, ", unparsed\n");
    	    break;
    	case XML_INTERNAL_PARAMETER_ENTITY: 
    	    fprintf(output, ", parameter\n");
    	    break;
    	case XML_EXTERNAL_PARAMETER_ENTITY: 
    	    fprintf(output, ", external parameter\n");
    	    break;
    	case XML_INTERNAL_PREDEFINED_ENTITY: 
    	    fprintf(output, ", predefined\n");
    	    break;
        }
        if (ent->ExternalID) {
            fprintf(output, shift);
            fprintf(output, " ExternalID=%s\n", ent->ExternalID);
        }
        if (ent->SystemID) {
            fprintf(output, shift);
            fprintf(output, " SystemID=%s\n", ent->SystemID);
        }
        if (ent->URI != NULL) {
            fprintf(output, shift);
            fprintf(output, " URI=%s\n", ent->URI);
        }
        if (ent->content) {
            fprintf(output, shift);
    	fprintf(output, " content=");
    	xmlDebugDumpString(output, ent->content);
    	fprintf(output, "\n");
        }
    
        /*
         * Do a bit of checking
         */
        if (ent->parent == NULL)
    	fprintf(output, "PBM: Ent has no parent\n");
        if (ent->doc == NULL)
    	fprintf(output, "PBM: Ent has no doc\n");
        if ((ent->parent != NULL) && (ent->doc != ent->parent->doc))
    	fprintf(output, "PBM: Ent doc differs from parent's one\n");
        if (ent->prev == NULL) {
    	if ((ent->parent != NULL) && (ent->parent->children != (xmlNodePtr)ent))
    	    fprintf(output, "PBM: Ent has no prev and not first of list\n");
        } else {
    	if (ent->prev->next != (xmlNodePtr) ent)
    	    fprintf(output, "PBM: Ent prev->next : back link wrong\n");
        }
        if (ent->next == NULL) {
    	if ((ent->parent != NULL) && (ent->parent->last != (xmlNodePtr) ent))
    	    fprintf(output, "PBM: Ent has no next and not last of list\n");
        } else {
    	if (ent->next->prev != (xmlNodePtr) ent)
    	    fprintf(output, "PBM: Ent next->prev : forward link wrong\n");
        }
    }
    
    static void
    xmlDebugDumpNamespace(FILE *output, xmlNsPtr ns, int depth) {
        int i;
        char shift[100];
    
        for (i = 0;((i < depth) && (i < 25));i++)
            shift[2 * i] = shift[2 * i + 1] = ' ';
        shift[2 * i] = shift[2 * i + 1] = 0;
    
        fprintf(output, shift);
    
        if (ns == NULL) {
    	fprintf(output, "namespace node is NULL\n");
    	return;
        }
        if (ns->type != XML_NAMESPACE_DECL) {
            fprintf(output, "invalid namespace node %d\n", ns->type);
    	return;
        }
        if (ns->href == NULL) {
    	if (ns->prefix != NULL)
    	    fprintf(output, "incomplete namespace %s href=NULL\n", ns->prefix);
    	else
    	    fprintf(output, "incomplete default namespace href=NULL\n");
        } else {
    	if (ns->prefix != NULL)
    	    fprintf(output, "namespace %s href=", ns->prefix);
    	else
    	    fprintf(output, "default namespace href=");
    
    	xmlDebugDumpString(output, ns->href);
    	fprintf(output, "\n");
        }
    }
    
    static void
    xmlDebugDumpNamespaceList(FILE *output, xmlNsPtr ns, int depth) {
        while (ns != NULL) {
            xmlDebugDumpNamespace(output, ns, depth);
    	ns = ns->next;
        }
    }
    
    static void
    xmlDebugDumpEntity(FILE *output, xmlEntityPtr ent, int depth) {
        int i;
        char shift[100];
    
        for (i = 0;((i < depth) && (i < 25));i++)
            shift[2 * i] = shift[2 * i + 1] = ' ';
        shift[2 * i] = shift[2 * i + 1] = 0;
    
        fprintf(output, shift);
        
        if (ent == NULL) {
    	fprintf(output, "Entity is NULL\n");
    	return;
        }
        switch (ent->etype) {
            case XML_INTERNAL_GENERAL_ENTITY:
    	    fprintf(output, "INTERNAL_GENERAL_ENTITY ");
    	    break;
            case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
    	    fprintf(output, "EXTERNAL_GENERAL_PARSED_ENTITY ");
    	    break;
            case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
    	    fprintf(output, "EXTERNAL_GENERAL_UNPARSED_ENTITY ");
    	    break;
            case XML_INTERNAL_PARAMETER_ENTITY:
    	    fprintf(output, "INTERNAL_PARAMETER_ENTITY ");
    	    break;
            case XML_EXTERNAL_PARAMETER_ENTITY:
    	    fprintf(output, "EXTERNAL_PARAMETER_ENTITY ");
    	    break;
    	default:
    	    fprintf(output, "ENTITY_%d ! ", ent->etype);
        }
        fprintf(output, "%s\n", ent->name);
        if (ent->ExternalID) {
            fprintf(output, shift);
            fprintf(output, "ExternalID=%s\n", ent->ExternalID);
        }
        if (ent->SystemID) {
            fprintf(output, shift);
            fprintf(output, "SystemID=%s\n", ent->SystemID);
        }
        if (ent->URI) {
            fprintf(output, shift);
            fprintf(output, "URI=%s\n", ent->URI);
        }
        if (ent->content) {
            fprintf(output, shift);
    	fprintf(output, "content=");
    	xmlDebugDumpString(output, ent->content);
    	fprintf(output, "\n");
        }
    }
    
    /**
     * xmlDebugDumpAttr:
     * @output:  the FILE * for the output
     * @attr:  the attribute
     * @depth:  the indentation level.
     *
     * Dumps debug information for the attribute
     */
    void
    xmlDebugDumpAttr(FILE *output, xmlAttrPtr attr, int depth) {
        int i;
        char shift[100];
    
        for (i = 0;((i < depth) && (i < 25));i++)
            shift[2 * i] = shift[2 * i + 1] = ' ';
        shift[2 * i] = shift[2 * i + 1] = 0;
    
        fprintf(output, shift);
        
        if (attr == NULL) {
    	fprintf(output, "Attr is NULL");
    	return;
        }
        fprintf(output, "ATTRIBUTE ");
        xmlDebugDumpString(output, attr->name);
        fprintf(output, "\n");
        if (attr->children != NULL) 
            xmlDebugDumpNodeList(output, attr->children, depth + 1);
    
        /*
         * Do a bit of checking
         */
        if (attr->parent == NULL)
    	fprintf(output, "PBM: Attr has no parent\n");
        if (attr->doc == NULL)
    	fprintf(output, "PBM: Attr has no doc\n");
        if ((attr->parent != NULL) && (attr->doc != attr->parent->doc))
    	fprintf(output, "PBM: Attr doc differs from parent's one\n");
        if (attr->prev == NULL) {
    	if ((attr->parent != NULL) && (attr->parent->properties != attr))
    	    fprintf(output, "PBM: Attr has no prev and not first of list\n");
        } else {
    	if (attr->prev->next != attr)
    	    fprintf(output, "PBM: Attr prev->next : back link wrong\n");
        }
        if (attr->next != NULL) {
    	if (attr->next->prev != attr)
    	    fprintf(output, "PBM: Attr next->prev : forward link wrong\n");
        }
    }
    
    /**
     * xmlDebugDumpAttrList:
     * @output:  the FILE * for the output
     * @attr:  the attribute list
     * @depth:  the indentation level.
     *
     * Dumps debug information for the attribute list
     */
    void
    xmlDebugDumpAttrList(FILE * output, xmlAttrPtr attr, int depth)
    {
        if (output == NULL)
    	output = stdout;
        while (attr != NULL) {
            xmlDebugDumpAttr(output, attr, depth);
            attr = attr->next;
        }
    }
    
    /**
     * xmlDebugDumpOneNode:
     * @output:  the FILE * for the output
     * @node:  the node
     * @depth:  the indentation level.
     *
     * Dumps debug information for the element node, it is not recursive
     */
    void
    xmlDebugDumpOneNode(FILE * output, xmlNodePtr node, int depth)
    {
        int i;
        char shift[100];
    
        if (output == NULL)
    	output = stdout;
        for (i = 0; ((i < depth) && (i < 25)); i++)
            shift[2 * i] = shift[2 * i + 1] = ' ';
        shift[2 * i] = shift[2 * i + 1] = 0;
    
        if (node == NULL) {
    	fprintf(output, shift);
    	fprintf(output, "node is NULL\n");
    	return;
        }
        switch (node->type) {
            case XML_ELEMENT_NODE:
                fprintf(output, shift);
                fprintf(output, "ELEMENT ");
                if ((node->ns != NULL) && (node->ns->prefix != NULL)) {
                    xmlDebugDumpString(output, node->ns->prefix);
                    fprintf(output, ":");
                }
                xmlDebugDumpString(output, node->name);
                fprintf(output, "\n");
                break;
            case XML_ATTRIBUTE_NODE:
                fprintf(output, shift);
                fprintf(output, "Error, ATTRIBUTE found here\n");
                break;
            case XML_TEXT_NODE:
                fprintf(output, shift);
    	    if (node->name == (const xmlChar *) xmlStringTextNoenc)
    		fprintf(output, "TEXT no enc\n");
    	    else
    		fprintf(output, "TEXT\n");
                break;
            case XML_CDATA_SECTION_NODE:
                fprintf(output, shift);
                fprintf(output, "CDATA_SECTION\n");
                break;
            case XML_ENTITY_REF_NODE:
                fprintf(output, shift);
                fprintf(output, "ENTITY_REF(%s)\n", node->name);
                break;
            case XML_ENTITY_NODE:
                fprintf(output, shift);
                fprintf(output, "ENTITY\n");
                break;
            case XML_PI_NODE:
                fprintf(output, shift);
                fprintf(output, "PI %s\n", node->name);
                break;
            case XML_COMMENT_NODE:
                fprintf(output, shift);
                fprintf(output, "COMMENT\n");
                break;
            case XML_DOCUMENT_NODE:
            case XML_HTML_DOCUMENT_NODE:
                fprintf(output, shift);
                fprintf(output, "Error, DOCUMENT found here\n");
                break;
            case XML_DOCUMENT_TYPE_NODE:
                fprintf(output, shift);
                fprintf(output, "DOCUMENT_TYPE\n");
                break;
            case XML_DOCUMENT_FRAG_NODE:
                fprintf(output, shift);
                fprintf(output, "DOCUMENT_FRAG\n");
                break;
            case XML_NOTATION_NODE:
                fprintf(output, shift);
                fprintf(output, "NOTATION\n");
                break;
            case XML_DTD_NODE:
                xmlDebugDumpDtdNode(output, (xmlDtdPtr) node, depth);
                return;
            case XML_ELEMENT_DECL:
                xmlDebugDumpElemDecl(output, (xmlElementPtr) node, depth);
                return;
            case XML_ATTRIBUTE_DECL:
                xmlDebugDumpAttrDecl(output, (xmlAttributePtr) node, depth);
                return;
            case XML_ENTITY_DECL:
                xmlDebugDumpEntityDecl(output, (xmlEntityPtr) node, depth);
                return;
            case XML_NAMESPACE_DECL:
                xmlDebugDumpNamespace(output, (xmlNsPtr) node, depth);
                return;
            case XML_XINCLUDE_START:
                fprintf(output, shift);
                fprintf(output, "INCLUDE START\n");
                return;
            case XML_XINCLUDE_END:
                fprintf(output, shift);
                fprintf(output, "INCLUDE END\n");
                return;
            default:
                fprintf(output, shift);
                fprintf(output, "NODE_%d !!!\n", node->type);
                return;
        }
        if (node->doc == NULL) {
            fprintf(output, shift);
            fprintf(output, "doc == NULL !!!\n");
        }
        if (node->nsDef != NULL)
            xmlDebugDumpNamespaceList(output, node->nsDef, depth + 1);
        if (node->properties != NULL)
            xmlDebugDumpAttrList(output, node->properties, depth + 1);
        if (node->type != XML_ENTITY_REF_NODE) {
            if ((node->type != XML_ELEMENT_NODE) && (node->content != NULL)) {
                shift[2 * i] = shift[2 * i + 1] = ' ';
                shift[2 * i + 2] = shift[2 * i + 3] = 0;
                fprintf(output, shift);
                fprintf(output, "content=");
                xmlDebugDumpString(output, node->content);
                fprintf(output, "\n");
            }
        } else {
            xmlEntityPtr ent;
    
            ent = xmlGetDocEntity(node->doc, node->name);
            if (ent != NULL)
                xmlDebugDumpEntity(output, ent, depth + 1);
        }
        /*
         * Do a bit of checking
         */
        if (node->parent == NULL)
            fprintf(output, "PBM: Node has no parent\n");
        if (node->doc == NULL)
            fprintf(output, "PBM: Node has no doc\n");
        if ((node->parent != NULL) && (node->doc != node->parent->doc))
            fprintf(output, "PBM: Node doc differs from parent's one\n");
        if (node->prev == NULL) {
            if ((node->parent != NULL) && (node->parent->children != node))
                fprintf(output,
                        "PBM: Node has no prev and not first of list\n");
        } else {
            if (node->prev->next != node)
                fprintf(output, "PBM: Node prev->next : back link wrong\n");
        }
        if (node->next == NULL) {
            if ((node->parent != NULL) && (node->parent->last != node))
                fprintf(output,
                        "PBM: Node has no next and not last of list\n");
        } else {
            if (node->next->prev != node)
                fprintf(output, "PBM: Node next->prev : forward link wrong\n");
        }
    }
    
    /**
     * xmlDebugDumpNode:
     * @output:  the FILE * for the output
     * @node:  the node
     * @depth:  the indentation level.
     *
     * Dumps debug information for the element node, it is recursive
     */
    void
    xmlDebugDumpNode(FILE * output, xmlNodePtr node, int depth)
    {
        if (output == NULL)
    	output = stdout;
        if (node == NULL) {
    	int i;
    	char shift[100];
        	
    	for (i = 0; ((i < depth) && (i < 25)); i++)
    	    shift[2 * i] = shift[2 * i + 1] = ' ';
    	shift[2 * i] = shift[2 * i + 1] = 0;
    	
    	fprintf(output, shift);
    	fprintf(output, "node is NULL\n");
    	return;
        }	
        xmlDebugDumpOneNode(output, node, depth);
        if ((node->children != NULL) && (node->type != XML_ENTITY_REF_NODE))
            xmlDebugDumpNodeList(output, node->children, depth + 1);
    }
    
    /**
     * xmlDebugDumpNodeList:
     * @output:  the FILE * for the output
     * @node:  the node list
     * @depth:  the indentation level.
     *
     * Dumps debug information for the list of element node, it is recursive
     */
    void
    xmlDebugDumpNodeList(FILE * output, xmlNodePtr node, int depth)
    {
        if (output == NULL)
    	output = stdout;
        while (node != NULL) {
            xmlDebugDumpNode(output, node, depth);
            node = node->next;
        }
    }
    
    
    /**
     * xmlDebugDumpDocumentHead:
     * @output:  the FILE * for the output
     * @doc:  the document
     *
     * Dumps debug information cncerning the document, not recursive
     */
    void
    xmlDebugDumpDocumentHead(FILE * output, xmlDocPtr doc)
    {
        if (output == NULL)
            output = stdout;
        if (doc == NULL) {
            fprintf(output, "DOCUMENT == NULL !\n");
            return;
        }
    
        switch (doc->type) {
            case XML_ELEMENT_NODE:
                fprintf(output, "Error, ELEMENT found here ");
                break;
            case XML_ATTRIBUTE_NODE:
                fprintf(output, "Error, ATTRIBUTE found here\n");
                break;
            case XML_TEXT_NODE:
                fprintf(output, "Error, TEXT\n");
                break;
            case XML_CDATA_SECTION_NODE:
                fprintf(output, "Error, CDATA_SECTION\n");
                break;
            case XML_ENTITY_REF_NODE:
                fprintf(output, "Error, ENTITY_REF\n");
                break;
            case XML_ENTITY_NODE:
                fprintf(output, "Error, ENTITY\n");
                break;
            case XML_PI_NODE:
                fprintf(output, "Error, PI\n");
                break;
            case XML_COMMENT_NODE:
                fprintf(output, "Error, COMMENT\n");
                break;
            case XML_DOCUMENT_NODE:
                fprintf(output, "DOCUMENT\n");
                break;
            case XML_HTML_DOCUMENT_NODE:
                fprintf(output, "HTML DOCUMENT\n");
                break;
            case XML_DOCUMENT_TYPE_NODE:
                fprintf(output, "Error, DOCUMENT_TYPE\n");
                break;
            case XML_DOCUMENT_FRAG_NODE:
                fprintf(output, "Error, DOCUMENT_FRAG\n");
                break;
            case XML_NOTATION_NODE:
                fprintf(output, "Error, NOTATION\n");
                break;
            default:
                fprintf(output, "NODE_%d\n", doc->type);
        }
        if (doc->name != NULL) {
            fprintf(output, "name=");
            xmlDebugDumpString(output, BAD_CAST doc->name);
            fprintf(output, "\n");
        }
        if (doc->version != NULL) {
            fprintf(output, "version=");
            xmlDebugDumpString(output, doc->version);
            fprintf(output, "\n");
        }
        if (doc->encoding != NULL) {
            fprintf(output, "encoding=");
            xmlDebugDumpString(output, doc->encoding);
            fprintf(output, "\n");
        }
        if (doc->URL != NULL) {
            fprintf(output, "URL=");
            xmlDebugDumpString(output, doc->URL);
            fprintf(output, "\n");
        }
        if (doc->standalone)
            fprintf(output, "standalone=true\n");
        if (doc->oldNs != NULL)
            xmlDebugDumpNamespaceList(output, doc->oldNs, 0);
    }
    
    /**
     * xmlDebugDumpDocument:
     * @output:  the FILE * for the output
     * @doc:  the document
     *
     * Dumps debug information for the document, it's recursive
     */
    void
    xmlDebugDumpDocument(FILE * output, xmlDocPtr doc)
    {
        if (output == NULL)
            output = stdout;
        if (doc == NULL) {
            fprintf(output, "DOCUMENT == NULL !\n");
            return;
        }
        xmlDebugDumpDocumentHead(output, doc);
        if (((doc->type == XML_DOCUMENT_NODE) ||
             (doc->type == XML_HTML_DOCUMENT_NODE)) && (doc->children != NULL))
            xmlDebugDumpNodeList(output, doc->children, 1);
    }
    
    /**
     * xmlDebugDumpDTD:
     * @output:  the FILE * for the output
     * @dtd:  the DTD
     *
     * Dumps debug information for the DTD
     */
    void
    xmlDebugDumpDTD(FILE * output, xmlDtdPtr dtd)
    {
        if (output == NULL)
    	output = stdout;
        if (dtd == NULL) {
    	fprintf(output, "DTD is NULL\n");
            return;
        }
        if (dtd->type != XML_DTD_NODE) {
            fprintf(output, "PBM: not a DTD\n");
            return;
        }
        if (dtd->name != NULL)
            fprintf(output, "DTD(%s)", dtd->name);
        else
            fprintf(output, "DTD");
        if (dtd->ExternalID != NULL)
            fprintf(output, ", PUBLIC %s", dtd->ExternalID);
        if (dtd->SystemID != NULL)
            fprintf(output, ", SYSTEM %s", dtd->SystemID);
        fprintf(output, "\n");
        /*
         * Do a bit of checking
         */
        if ((dtd->parent != NULL) && (dtd->doc != dtd->parent->doc))
            fprintf(output, "PBM: DTD doc differs from parent's one\n");
        if (dtd->prev == NULL) {
            if ((dtd->parent != NULL)
                && (dtd->parent->children != (xmlNodePtr) dtd))
                fprintf(output,
                        "PBM: DTD has no prev and not first of list\n");
        } else {
            if (dtd->prev->next != (xmlNodePtr) dtd)
                fprintf(output, "PBM: DTD prev->next : back link wrong\n");
        }
        if (dtd->next == NULL) {
            if ((dtd->parent != NULL)
                && (dtd->parent->last != (xmlNodePtr) dtd))
                fprintf(output, "PBM: DTD has no next and not last of list\n");
        } else {
            if (dtd->next->prev != (xmlNodePtr) dtd)
                fprintf(output, "PBM: DTD next->prev : forward link wrong\n");
        }
        if (dtd->children == NULL)
            fprintf(output, "    DTD is empty\n");
        else
            xmlDebugDumpNodeList(output, dtd->children, 1);
    }
    
    static void
    xmlDebugDumpEntityCallback(xmlEntityPtr cur, FILE *output) {
        if (cur == NULL) {
    	fprintf(output, "Entity is NULL");
    	return;
        }
        fprintf(output, "%s : ", cur->name);
        switch (cur->etype) {
    	case XML_INTERNAL_GENERAL_ENTITY:
    	    fprintf(output, "INTERNAL GENERAL, ");
    	    break;
    	case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
    	    fprintf(output, "EXTERNAL PARSED, ");
    	    break;
    	case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
    	    fprintf(output, "EXTERNAL UNPARSED, ");
    	    break;
    	case XML_INTERNAL_PARAMETER_ENTITY:
    	    fprintf(output, "INTERNAL PARAMETER, ");
    	    break;
    	case XML_EXTERNAL_PARAMETER_ENTITY:
    	    fprintf(output, "EXTERNAL PARAMETER, ");
    	    break;
    	default:
    	    fprintf(output, "UNKNOWN TYPE %d",
    		    cur->etype);
        }
        if (cur->ExternalID != NULL) 
    	fprintf(output, "ID \"%s\"", cur->ExternalID);
        if (cur->SystemID != NULL)
    	fprintf(output, "SYSTEM \"%s\"", cur->SystemID);
        if (cur->orig != NULL)
    	fprintf(output, "\n orig \"%s\"", cur->orig);
        if ((cur->type != XML_ELEMENT_NODE) &&
    	(cur->content != NULL))
    	fprintf(output, "\n content \"%s\"", cur->content);
        fprintf(output, "\n");	
    }
    
    /**
     * xmlDebugDumpEntities:
     * @output:  the FILE * for the output
     * @doc:  the document
     *
     * Dumps debug information for all the entities in use by the document
     */
    void
    xmlDebugDumpEntities(FILE * output, xmlDocPtr doc)
    {
        if (output == NULL)
            output = stdout;
        if (doc == NULL) {
            fprintf(output, "DOCUMENT == NULL !\n");
            return;
        }
    
        switch (doc->type) {
            case XML_ELEMENT_NODE:
                fprintf(output, "Error, ELEMENT found here ");
                break;
            case XML_ATTRIBUTE_NODE:
                fprintf(output, "Error, ATTRIBUTE found here\n");
                break;
            case XML_TEXT_NODE:
                fprintf(output, "Error, TEXT\n");
                break;
            case XML_CDATA_SECTION_NODE:
                fprintf(output, "Error, CDATA_SECTION\n");
                break;
            case XML_ENTITY_REF_NODE:
                fprintf(output, "Error, ENTITY_REF\n");
                break;
            case XML_ENTITY_NODE:
                fprintf(output, "Error, ENTITY\n");
                break;
            case XML_PI_NODE:
                fprintf(output, "Error, PI\n");
                break;
            case XML_COMMENT_NODE:
                fprintf(output, "Error, COMMENT\n");
                break;
            case XML_DOCUMENT_NODE:
                fprintf(output, "DOCUMENT\n");
                break;
            case XML_HTML_DOCUMENT_NODE:
                fprintf(output, "HTML DOCUMENT\n");
                break;
            case XML_DOCUMENT_TYPE_NODE:
                fprintf(output, "Error, DOCUMENT_TYPE\n");
                break;
            case XML_DOCUMENT_FRAG_NODE:
                fprintf(output, "Error, DOCUMENT_FRAG\n");
                break;
            case XML_NOTATION_NODE:
                fprintf(output, "Error, NOTATION\n");
                break;
            default:
                fprintf(output, "NODE_%d\n", doc->type);
        }
        if ((doc->intSubset != NULL) && (doc->intSubset->entities != NULL)) {
            xmlEntitiesTablePtr table = (xmlEntitiesTablePtr)
                doc->intSubset->entities;
    
            fprintf(output, "Entities in internal subset\n");
            xmlHashScan(table, (xmlHashScanner) xmlDebugDumpEntityCallback,
                        output);
        } else
            fprintf(output, "No entities in internal subset\n");
        if ((doc->extSubset != NULL) && (doc->extSubset->entities != NULL)) {
            xmlEntitiesTablePtr table = (xmlEntitiesTablePtr)
                doc->extSubset->entities;
    
            fprintf(output, "Entities in external subset\n");
            xmlHashScan(table, (xmlHashScanner) xmlDebugDumpEntityCallback,
                        output);
        } else
            fprintf(output, "No entities in external subset\n");
    }
    
    /**
     * xmlLsCountNode:
     * @node:  the node to count
     *
     * Count the children of @node.
     *
     * Returns the number of children of @node.
     */
    int
    xmlLsCountNode(xmlNodePtr node) {
        int ret = 0;
        xmlNodePtr list = NULL;
        
        if (node == NULL)
    	return(0);
    
        switch (node->type) {
    	case XML_ELEMENT_NODE:
    	    list = node->children;
    	    break;
    	case XML_DOCUMENT_NODE:
    	case XML_HTML_DOCUMENT_NODE:
    #ifdef LIBXML_DOCB_ENABLED
    	case XML_DOCB_DOCUMENT_NODE:
    #endif
    	    list = ((xmlDocPtr) node)->children;
    	    break;
    	case XML_ATTRIBUTE_NODE:
    	    list = ((xmlAttrPtr) node)->children;
    	    break;
    	case XML_TEXT_NODE:
    	case XML_CDATA_SECTION_NODE:
    	case XML_PI_NODE:
    	case XML_COMMENT_NODE:
    	    if (node->content != NULL) {
    		ret = xmlStrlen(node->content);
                }
    	    break;
    	case XML_ENTITY_REF_NODE:
    	case XML_DOCUMENT_TYPE_NODE:
    	case XML_ENTITY_NODE:
    	case XML_DOCUMENT_FRAG_NODE:
    	case XML_NOTATION_NODE:
    	case XML_DTD_NODE:
            case XML_ELEMENT_DECL:
            case XML_ATTRIBUTE_DECL:
            case XML_ENTITY_DECL:
    	case XML_NAMESPACE_DECL:
    	case XML_XINCLUDE_START:
    	case XML_XINCLUDE_END:
    	    ret = 1;
    	    break;
        }
        for (;list != NULL;ret++) 
            list = list->next;
        return(ret);
    }
    
    /**
     * xmlLsOneNode:
     * @output:  the FILE * for the output
     * @node:  the node to dump
     *
     * Dump to @output the type and name of @node.
     */
    void
    xmlLsOneNode(FILE *output, xmlNodePtr node) {
        if (node == NULL) {
    	fprintf(output, "NULL\n");
    	return;
        }
        switch (node->type) {
    	case XML_ELEMENT_NODE:
    	    fprintf(output, "-");
    	    break;
    	case XML_ATTRIBUTE_NODE:
    	    fprintf(output, "a");
    	    break;
    	case XML_TEXT_NODE:
    	    fprintf(output, "t");
    	    break;
    	case XML_CDATA_SECTION_NODE:
    	    fprintf(output, "C");
    	    break;
    	case XML_ENTITY_REF_NODE:
    	    fprintf(output, "e");
    	    break;
    	case XML_ENTITY_NODE:
    	    fprintf(output, "E");
    	    break;
    	case XML_PI_NODE:
    	    fprintf(output, "p");
    	    break;
    	case XML_COMMENT_NODE:
    	    fprintf(output, "c");
    	    break;
    	case XML_DOCUMENT_NODE:
    	    fprintf(output, "d");
    	    break;
    	case XML_HTML_DOCUMENT_NODE:
    	    fprintf(output, "h");
    	    break;
    	case XML_DOCUMENT_TYPE_NODE:
    	    fprintf(output, "T");
    	    break;
    	case XML_DOCUMENT_FRAG_NODE:
    	    fprintf(output, "F");
    	    break;
    	case XML_NOTATION_NODE:
    	    fprintf(output, "N");
    	    break;
    	case XML_NAMESPACE_DECL:
    	    fprintf(output, "n");
    	    break;
    	default:
    	    fprintf(output, "?");
        }
        if (node->type != XML_NAMESPACE_DECL) {
    	if (node->properties != NULL)
    	    fprintf(output, "a");
    	else	
    	    fprintf(output, "-");
    	if (node->nsDef != NULL) 
    	    fprintf(output, "n");
    	else	
    	    fprintf(output, "-");
        }
    
        fprintf(output, " %8d ", xmlLsCountNode(node));
    
        switch (node->type) {
    	case XML_ELEMENT_NODE:
    	    if (node->name != NULL)
    		fprintf(output, "%s", node->name);
    	    break;
    	case XML_ATTRIBUTE_NODE:
    	    if (node->name != NULL)
    		fprintf(output, "%s", node->name);
    	    break;
    	case XML_TEXT_NODE:
    	    if (node->content != NULL) {
    		xmlDebugDumpString(output, node->content);
                }
    	    break;
    	case XML_CDATA_SECTION_NODE:
    	    break;
    	case XML_ENTITY_REF_NODE:
    	    if (node->name != NULL)
    		fprintf(output, "%s", node->name);
    	    break;
    	case XML_ENTITY_NODE:
    	    if (node->name != NULL)
    		fprintf(output, "%s", node->name);
    	    break;
    	case XML_PI_NODE:
    	    if (node->name != NULL)
    		fprintf(output, "%s", node->name);
    	    break;
    	case XML_COMMENT_NODE:
    	    break;
    	case XML_DOCUMENT_NODE:
    	    break;
    	case XML_HTML_DOCUMENT_NODE:
    	    break;
    	case XML_DOCUMENT_TYPE_NODE:
    	    break;
    	case XML_DOCUMENT_FRAG_NODE:
    	    break;
    	case XML_NOTATION_NODE:
    	    break;
    	case XML_NAMESPACE_DECL: {
    	    xmlNsPtr ns = (xmlNsPtr) node;
    
    	    if (ns->prefix == NULL)
    		fprintf(output, "default -> %s", ns->href);
    	    else
    		fprintf(output, "%s -> %s", ns->prefix, ns->href);
    	    break;
    	}
    	default:
    	    if (node->name != NULL)
    		fprintf(output, "%s", node->name);
        }
        fprintf(output, "\n");
    }
    
    /**
     * xmlBoolToText:
     * @boolval: a bool to turn into text
     *
     * Convenient way to turn bool into text 
     *
     * Returns a pointer to either "True" or "False"
     */
    const char *
    xmlBoolToText(int boolval)
    {
        if (boolval)
            return("True");
        else
            return("False");
    }
    
    /****************************************************************
     *								*
     *	 	The XML shell related functions			*
     *								*
     ****************************************************************/
    
    
    
    /*
     * TODO: Improvement/cleanups for the XML shell
     *     - allow to shell out an editor on a subpart
     *     - cleanup function registrations (with help) and calling
     *     - provide registration routines
     */
    
    /**
     * xmlShellPrintXPathError:
     * @errorType: valid xpath error id
     * @arg: the argument that cause xpath to fail
     *
     * Print the xpath error to libxml default error channel
     */
    void
    xmlShellPrintXPathError(int errorType, const char *arg)
    {
        const char *default_arg = "Result";
    
        if (!arg)
            arg = default_arg;
    
        switch (errorType) {
            case XPATH_UNDEFINED:
                xmlGenericError(xmlGenericErrorContext,
                                "%s: no such node\n", arg);
                break;
    
            case XPATH_BOOLEAN:
                xmlGenericError(xmlGenericErrorContext,
                                "%s is a Boolean\n", arg);
                break;
            case XPATH_NUMBER:
                xmlGenericError(xmlGenericErrorContext,
                                "%s is a number\n", arg);
                break;
            case XPATH_STRING:
                xmlGenericError(xmlGenericErrorContext,
                                "%s is a string\n", arg);
                break;
            case XPATH_POINT:
                xmlGenericError(xmlGenericErrorContext,
                                "%s is a point\n", arg);
                break;
            case XPATH_RANGE:
                xmlGenericError(xmlGenericErrorContext,
                                "%s is a range\n", arg);
                break;
            case XPATH_LOCATIONSET:
                xmlGenericError(xmlGenericErrorContext,
                                "%s is a range\n", arg);
                break;
            case XPATH_USERS:
                xmlGenericError(xmlGenericErrorContext,
                                "%s is user-defined\n", arg);
                break;
            case XPATH_XSLT_TREE:
                xmlGenericError(xmlGenericErrorContext,
                                "%s is an XSLT value tree\n", arg);
                break;
        }
        xmlGenericError(xmlGenericErrorContext,
                        "Try casting the result string function (xpath builtin)\n",
                        arg);
    }
    
    
    /**
     * xmlShellPrintNode:
     * @node : a non-null node to print to stdout
     *
     * Print node to stdout
     */
    void
    xmlShellPrintNode(xmlNodePtr node)
    {
        if (!node)
            return;
    
        if (node->type == XML_DOCUMENT_NODE)
            xmlDocDump(stdout, (xmlDocPtr) node);
        else if (node->type == XML_ATTRIBUTE_NODE)
            xmlDebugDumpAttrList(stdout, (xmlAttrPtr) node, 0);
        else
            xmlElemDump(stdout, node->doc, node);
    
        fprintf(stdout, "\n");
    }
    
    
    /**
     * xmlShellPrintXPathResult:
     * @list: a valid result generated by an xpath evaluation
     *
     * Prints result to stdout
     */
    void
    xmlShellPrintXPathResult(xmlXPathObjectPtr list)
    {
        int i = 0;
    
        if (list != NULL) {
            switch (list->type) {
                case XPATH_NODESET:{
                        int indx;
    
                        if (list->nodesetval) {
                            for (indx = 0; indx < list->nodesetval->nodeNr;
                                 indx++) {
                                if (i > 0)
                                    fprintf(stderr, " -------\n");
                                xmlShellPrintNode(list->nodesetval->
                                                  nodeTab[indx]);
                            }
                        } else {
                            xmlGenericError(xmlGenericErrorContext,
                                            "Empty node set\n");
                        }
                        break;
                    }
                case XPATH_BOOLEAN:
                    xmlGenericError(xmlGenericErrorContext,
                                    "Is a Boolean:%s\n",
                                    xmlBoolToText(list->boolval));
                    break;
                case XPATH_NUMBER:
                    xmlGenericError(xmlGenericErrorContext,
                                    "Is a number:%0g\n", list->floatval);
                    break;
                case XPATH_STRING:
                    xmlGenericError(xmlGenericErrorContext,
                                    "Is a string:%s\n", list->stringval);
                    break;
    
                default:
                    xmlShellPrintXPathError(list->type, NULL);
            }
        }
    }
    
    /**
     * xmlShellList:
     * @ctxt:  the shell context
     * @arg:  unused
     * @node:  a node
     * @node2:  unused
     *
     * Implements the XML shell function "ls"
     * Does an Unix like listing of the given node (like a directory)
     *
     * Returns 0
     */
    int
    xmlShellList(xmlShellCtxtPtr ctxt ATTRIBUTE_UNUSED,
                 char *arg ATTRIBUTE_UNUSED, xmlNodePtr node,
                 xmlNodePtr node2 ATTRIBUTE_UNUSED)
    {
        xmlNodePtr cur;
        if (node == NULL) {
    	fprintf(stdout, "NULL\n");
    	return (0);
        }
        if ((node->type == XML_DOCUMENT_NODE) ||
            (node->type == XML_HTML_DOCUMENT_NODE)) {
            cur = ((xmlDocPtr) node)->children;
        } else if (node->type == XML_NAMESPACE_DECL) {
            xmlLsOneNode(stdout, node);
            return (0);
        } else if (node->children != NULL) {
            cur = node->children;
        } else {
            xmlLsOneNode(stdout, node);
            return (0);
        }
        while (cur != NULL) {
            xmlLsOneNode(stdout, cur);
            cur = cur->next;
        }
        return (0);
    }
    
    /**
     * xmlShellBase:
     * @ctxt:  the shell context
     * @arg:  unused
     * @node:  a node
     * @node2:  unused
     *
     * Implements the XML shell function "base"
     * dumps the current XML base of the node
     *
     * Returns 0
     */
    int
    xmlShellBase(xmlShellCtxtPtr ctxt ATTRIBUTE_UNUSED,
                 char *arg ATTRIBUTE_UNUSED, xmlNodePtr node,
                 xmlNodePtr node2 ATTRIBUTE_UNUSED)
    {
        xmlChar *base;
        if (node == NULL) {
    	fprintf(stdout, "NULL\n");
    	return (0);
        }    
    
        base = xmlNodeGetBase(node->doc, node);
    
        if (base == NULL) {
            fprintf(stdout, " No base found !!!\n");
        } else {
            fprintf(stdout, "%s\n", base);
            xmlFree(base);
        }
        return (0);
    }
    
    /**
     * xmlShellSetBase:
     * @ctxt:  the shell context
     * @arg:  the new base
     * @node:  a node
     * @node2:  unused
     *
     * Implements the XML shell function "setbase"
     * change the current XML base of the node
     *
     * Returns 0
     */
    static int
    xmlShellSetBase(xmlShellCtxtPtr ctxt ATTRIBUTE_UNUSED,
                 char *arg ATTRIBUTE_UNUSED, xmlNodePtr node,
                 xmlNodePtr node2 ATTRIBUTE_UNUSED)
    {
        xmlNodeSetBase(node, (xmlChar*) arg);
        return (0);
    }
    
    /**
     * xmlShellDir:
     * @ctxt:  the shell context
     * @arg:  unused
     * @node:  a node
     * @node2:  unused
     *
     * Implements the XML shell function "dir"
     * dumps informations about the node (namespace, attributes, content).
     *
     * Returns 0
     */
    int
    xmlShellDir(xmlShellCtxtPtr ctxt ATTRIBUTE_UNUSED,
                char *arg ATTRIBUTE_UNUSED, xmlNodePtr node,
                xmlNodePtr node2 ATTRIBUTE_UNUSED)
    {
        if (node == NULL) {
    	fprintf(stdout, "NULL\n");
    	return (0);
        }    
        if ((node->type == XML_DOCUMENT_NODE) ||
            (node->type == XML_HTML_DOCUMENT_NODE)) {
            xmlDebugDumpDocumentHead(stdout, (xmlDocPtr) node);
        } else if (node->type == XML_ATTRIBUTE_NODE) {
            xmlDebugDumpAttr(stdout, (xmlAttrPtr) node, 0);
        } else {
            xmlDebugDumpOneNode(stdout, node, 0);
        }
        return (0);
    }
    
    /**
     * xmlShellCat:
     * @ctxt:  the shell context
     * @arg:  unused
     * @node:  a node
     * @node2:  unused
     *
     * Implements the XML shell function "cat"
     * dumps the serialization node content (XML or HTML).
     *
     * Returns 0
     */
    int
    xmlShellCat(xmlShellCtxtPtr ctxt, char *arg ATTRIBUTE_UNUSED,
                xmlNodePtr node, xmlNodePtr node2 ATTRIBUTE_UNUSED)
    {
        if (node == NULL) {
    	fprintf(stdout, "NULL\n");
    	return (0);
        }    
        if (ctxt->doc->type == XML_HTML_DOCUMENT_NODE) {
    #ifdef LIBXML_HTML_ENABLED
            if (node->type == XML_HTML_DOCUMENT_NODE)
                htmlDocDump(stdout, (htmlDocPtr) node);
            else
                htmlNodeDumpFile(stdout, ctxt->doc, node);
    #else
            if (node->type == XML_DOCUMENT_NODE)
                xmlDocDump(stdout, (xmlDocPtr) node);
            else
                xmlElemDump(stdout, ctxt->doc, node);
    #endif /* LIBXML_HTML_ENABLED */
        } else {
            if (node->type == XML_DOCUMENT_NODE)
                xmlDocDump(stdout, (xmlDocPtr) node);
            else
                xmlElemDump(stdout, ctxt->doc, node);
        }
        fprintf(stdout, "\n");
        return (0);
    }
    
    /**
     * xmlShellLoad:
     * @ctxt:  the shell context
     * @filename:  the file name
     * @node:  unused
     * @node2:  unused
     *
     * Implements the XML shell function "load"
     * loads a new document specified by the filename
     *
     * Returns 0 or -1 if loading failed
     */
    int
    xmlShellLoad(xmlShellCtxtPtr ctxt, char *filename,
                 xmlNodePtr node ATTRIBUTE_UNUSED,
                 xmlNodePtr node2 ATTRIBUTE_UNUSED)
    {
        xmlDocPtr doc;
        int html = 0;
    
        if (ctxt->doc != NULL)
            html = (ctxt->doc->type == XML_HTML_DOCUMENT_NODE);
    
        if (html) {
    #ifdef LIBXML_HTML_ENABLED
            doc = htmlParseFile(filename, NULL);
    #else
            fprintf(stdout, "HTML support not compiled in\n");
            doc = NULL;
    #endif /* LIBXML_HTML_ENABLED */
        } else {
            doc = xmlParseFile(filename);
        }
        if (doc != NULL) {
            if (ctxt->loaded == 1) {
                xmlFreeDoc(ctxt->doc);
            }
            ctxt->loaded = 1;
    #ifdef LIBXML_XPATH_ENABLED
            xmlXPathFreeContext(ctxt->pctxt);
    #endif /* LIBXML_XPATH_ENABLED */
            xmlFree(ctxt->filename);
            ctxt->doc = doc;
            ctxt->node = (xmlNodePtr) doc;
    #ifdef LIBXML_XPATH_ENABLED
            ctxt->pctxt = xmlXPathNewContext(doc);
    #endif /* LIBXML_XPATH_ENABLED */
            ctxt->filename = (char *) xmlStrdup((xmlChar *) filename);
        } else
            return (-1);
        return (0);
    }
    
    /**
     * xmlShellWrite:
     * @ctxt:  the shell context
     * @filename:  the file name
     * @node:  a node in the tree
     * @node2:  unused
     *
     * Implements the XML shell function "write"
     * Write the current node to the filename, it saves the serialization
     * of the subtree under the @node specified
     *
     * Returns 0 or -1 in case of error
     */
    int
    xmlShellWrite(xmlShellCtxtPtr ctxt, char *filename, xmlNodePtr node,
                  xmlNodePtr node2 ATTRIBUTE_UNUSED)
    {
        if (node == NULL)
            return (-1);
        if ((filename == NULL) || (filename[0] == 0)) {
            xmlGenericError(xmlGenericErrorContext,
                            "Write command requires a filename argument\n");
            return (-1);
        }
    #ifdef W_OK
        if (access((char *) filename, W_OK)) {
            xmlGenericError(xmlGenericErrorContext,
                            "Cannot write to %s\n", filename);
            return (-1);
        }
    #endif
        switch (node->type) {
            case XML_DOCUMENT_NODE:
                if (xmlSaveFile((char *) filename, ctxt->doc) < -1) {
                    xmlGenericError(xmlGenericErrorContext,
                                    "Failed to write to %s\n", filename);
                    return (-1);
                }
                break;
            case XML_HTML_DOCUMENT_NODE:
    #ifdef LIBXML_HTML_ENABLED
                if (htmlSaveFile((char *) filename, ctxt->doc) < 0) {
                    xmlGenericError(xmlGenericErrorContext,
                                    "Failed to write to %s\n", filename);
                    return (-1);
                }
    #else
                if (xmlSaveFile((char *) filename, ctxt->doc) < -1) {
                    xmlGenericError(xmlGenericErrorContext,
                                    "Failed to write to %s\n", filename);
                    return (-1);
                }
    #endif /* LIBXML_HTML_ENABLED */
                break;
            default:{
                    FILE *f;
    
                    f = fopen((char *) filename, "w");
                    if (f == NULL) {
                        xmlGenericError(xmlGenericErrorContext,
                                        "Failed to write to %s\n", filename);
                        return (-1);
                    }
                    xmlElemDump(f, ctxt->doc, node);
                    fclose(f);
                }
        }
        return (0);
    }
    
    /**
     * xmlShellSave:
     * @ctxt:  the shell context
     * @filename:  the file name (optional)
     * @node:  unused
     * @node2:  unused
     *
     * Implements the XML shell function "save"
     * Write the current document to the filename, or it's original name
     *
     * Returns 0 or -1 in case of error
     */
    int
    xmlShellSave(xmlShellCtxtPtr ctxt, char *filename,
                 xmlNodePtr node ATTRIBUTE_UNUSED,
                 xmlNodePtr node2 ATTRIBUTE_UNUSED)
    {
        if (ctxt->doc == NULL)
            return (-1);
        if ((filename == NULL) || (filename[0] == 0))
            filename = ctxt->filename;
    #ifdef W_OK
        if (access((char *) filename, W_OK)) {
            xmlGenericError(xmlGenericErrorContext,
                            "Cannot save to %s\n", filename);
            return (-1);
        }
    #endif
        switch (ctxt->doc->type) {
            case XML_DOCUMENT_NODE:
                if (xmlSaveFile((char *) filename, ctxt->doc) < 0) {
                    xmlGenericError(xmlGenericErrorContext,
                                    "Failed to save to %s\n", filename);
                }
                break;
            case XML_HTML_DOCUMENT_NODE:
    #ifdef LIBXML_HTML_ENABLED
                if (htmlSaveFile((char *) filename, ctxt->doc) < 0) {
                    xmlGenericError(xmlGenericErrorContext,
                                    "Failed to save to %s\n", filename);
                }
    #else
                if (xmlSaveFile((char *) filename, ctxt->doc) < 0) {
                    xmlGenericError(xmlGenericErrorContext,
                                    "Failed to save to %s\n", filename);
                }
    #endif /* LIBXML_HTML_ENABLED */
                break;
            default:
                xmlGenericError(xmlGenericErrorContext,
    	    "To save to subparts of a document use the 'write' command\n");
                return (-1);
    
        }
        return (0);
    }
    
    /**
     * xmlShellValidate:
     * @ctxt:  the shell context
     * @dtd:  the DTD URI (optional)
     * @node:  unused
     * @node2:  unused
     *
     * Implements the XML shell function "validate"
     * Validate the document, if a DTD path is provided, then the validation
     * is done against the given DTD.
     *
     * Returns 0 or -1 in case of error
     */
    int
    xmlShellValidate(xmlShellCtxtPtr ctxt, char *dtd,
                     xmlNodePtr node ATTRIBUTE_UNUSED,
                     xmlNodePtr node2 ATTRIBUTE_UNUSED)
    {
        xmlValidCtxt vctxt;
        int res = -1;
    
        vctxt.userData = stderr;
        vctxt.error = (xmlValidityErrorFunc) fprintf;
        vctxt.warning = (xmlValidityWarningFunc) fprintf;
    
        if ((dtd == NULL) || (dtd[0] == 0)) {
            res = xmlValidateDocument(&vctxt, ctxt->doc);
        } else {
            xmlDtdPtr subset;
    
            subset = xmlParseDTD(NULL, (xmlChar *) dtd);
            if (subset != NULL) {
                res = xmlValidateDtd(&vctxt, ctxt->doc, subset);
    
                xmlFreeDtd(subset);
            }
        }
        return (res);
    }
    
    /**
     * xmlShellDu:
     * @ctxt:  the shell context
     * @arg:  unused
     * @tree:  a node defining a subtree
     * @node2:  unused
     *
     * Implements the XML shell function "du"
     * show the structure of the subtree under node @tree
     * If @tree is null, the command works on the current node.
     *
     * Returns 0 or -1 in case of error
     */
    int
    xmlShellDu(xmlShellCtxtPtr ctxt ATTRIBUTE_UNUSED,
               char *arg ATTRIBUTE_UNUSED, xmlNodePtr tree,
               xmlNodePtr node2 ATTRIBUTE_UNUSED)
    {
        xmlNodePtr node;
        int indent = 0, i;
    
        if (tree == NULL)
            return (-1);
        node = tree;
        while (node != NULL) {
            if ((node->type == XML_DOCUMENT_NODE) ||
                (node->type == XML_HTML_DOCUMENT_NODE)) {
                fprintf(stdout, "/\n");
            } else if (node->type == XML_ELEMENT_NODE) {
                for (i = 0; i < indent; i++)
                    fprintf(stdout, "  ");
                fprintf(stdout, "%s\n", node->name);
            } else {
            }
    
            /*
             * Browse the full subtree, deep first
             */
    
            if ((node->type == XML_DOCUMENT_NODE) ||
                (node->type == XML_HTML_DOCUMENT_NODE)) {
                node = ((xmlDocPtr) node)->children;
            } else if ((node->children != NULL)
                       && (node->type != XML_ENTITY_REF_NODE)) {
                /* deep first */
                node = node->children;
                indent++;
            } else if ((node != tree) && (node->next != NULL)) {
                /* then siblings */
                node = node->next;
            } else if (node != tree) {
                /* go up to parents->next if needed */
                while (node != tree) {
                    if (node->parent != NULL) {
                        node = node->parent;
                        indent--;
                    }
                    if ((node != tree) && (node->next != NULL)) {
                        node = node->next;
                        break;
                    }
                    if (node->parent == NULL) {
                        node = NULL;
                        break;
                    }
                    if (node == tree) {
                        node = NULL;
                        break;
                    }
                }
                /* exit condition */
                if (node == tree)
                    node = NULL;
            } else
                node = NULL;
        }
        return (0);
    }
    
    /**
     * xmlShellPwd:
     * @ctxt:  the shell context
     * @buffer:  the output buffer
     * @node:  a node 
     * @node2:  unused
     *
     * Implements the XML shell function "pwd"
     * Show the full path from the root to the node, if needed building
     * thumblers when similar elements exists at a given ancestor level.
     * The output is compatible with XPath commands.
     *
     * Returns 0 or -1 in case of error
     */
    int
    xmlShellPwd(xmlShellCtxtPtr ctxt ATTRIBUTE_UNUSED, char *buffer,
                xmlNodePtr node, xmlNodePtr node2 ATTRIBUTE_UNUSED)
    {
        xmlChar *path;
    
        if (node == NULL)
            return (-1);
    
        path = xmlGetNodePath(node);
        if (path == NULL)
    	return (-1);
    
        /*
         * This test prevents buffer overflow, because this routine
         * is only called by xmlShell, in which the second argument is
         * 500 chars long.
         * It is a dirty hack before a cleaner solution is found.
         * Documentation should mention that the second argument must
         * be at least 500 chars long, and could be stripped if too long.
         */
        snprintf(buffer, 499, "%s", path);
        buffer[499] = '0';
        xmlFree(path);
    
        return (0);
    }
    
    /**
     * xmlShell
     * @doc:  the initial document
     * @filename:  the output buffer
     * @input:  the line reading function
     * @output:  the output FILE*
     *
     * Implements the XML shell 
     * This allow to load, validate, view, modify and save a document
     * using a environment similar to a UNIX commandline.
     */
    void
    xmlShell(xmlDocPtr doc, char *filename, xmlShellReadlineFunc input,
             FILE * output)
    {
        char prompt[500] = "/ > ";
        char *cmdline = NULL, *cur;
        int nbargs;
        char command[100];
        char arg[400];
        int i;
        xmlShellCtxtPtr ctxt;
        xmlXPathObjectPtr list;
    
        if (doc == NULL)
            return;
        if (filename == NULL)
            return;
        if (input == NULL)
            return;
        if (output == NULL)
            return;
        ctxt = (xmlShellCtxtPtr) xmlMalloc(sizeof(xmlShellCtxt));
        if (ctxt == NULL)
            return;
        ctxt->loaded = 0;
        ctxt->doc = doc;
        ctxt->input = input;
        ctxt->output = output;
        ctxt->filename = (char *) xmlStrdup((xmlChar *) filename);
        ctxt->node = (xmlNodePtr) ctxt->doc;
    
    #ifdef LIBXML_XPATH_ENABLED
        ctxt->pctxt = xmlXPathNewContext(ctxt->doc);
        if (ctxt->pctxt == NULL) {
            xmlFree(ctxt);
            return;
        }
    #endif /* LIBXML_XPATH_ENABLED */
        while (1) {
            if (ctxt->node == (xmlNodePtr) ctxt->doc)
                sprintf(prompt, "%s > ", "/");
            else if (ctxt->node->name)
                snprintf(prompt, sizeof(prompt), "%s > ", ctxt->node->name);
            else
                sprintf(prompt, "? > ");
            prompt[sizeof(prompt) - 1] = 0;
    
            /*
             * Get a new command line
             */
            cmdline = ctxt->input(prompt);
            if (cmdline == NULL)
                break;
    
            /*
             * Parse the command itself
             */
            cur = cmdline;
            nbargs = 0;
            while ((*cur == ' ') || (*cur == '\t'))
                cur++;
            i = 0;
            while ((*cur != ' ') && (*cur != '\t') &&
                   (*cur != '\n') && (*cur != '\r')) {
                if (*cur == 0)
                    break;
                command[i++] = *cur++;
            }
            command[i] = 0;
            if (i == 0)
                continue;
            nbargs++;
    
            /*
             * Parse the argument
             */
            while ((*cur == ' ') || (*cur == '\t'))
                cur++;
            i = 0;
            while ((*cur != '\n') && (*cur != '\r') && (*cur != 0)) {
                if (*cur == 0)
                    break;
                arg[i++] = *cur++;
            }
            arg[i] = 0;
            if (i != 0)
                nbargs++;
    
            /*
             * start interpreting the command
             */
            if (!strcmp(command, "exit"))
                break;
            if (!strcmp(command, "quit"))
                break;
            if (!strcmp(command, "bye"))
                break;
    		if (!strcmp(command, "help")) {
    		  fprintf(stdout, "\tbase         display XML base of the node\n");
    		  fprintf(stdout, "\tsetbase URI  change the XML base of the node\n");
    		  fprintf(stdout, "\tbye          leave shell\n");
    		  fprintf(stdout, "\tcat [node]   display node or current node\n");
    		  fprintf(stdout, "\tcd [path]    change directory to path or to root\n");
    		  fprintf(stdout, "\tdir [path]   dumps informations about the node (namespace, attributes, content)\n");
    		  fprintf(stdout, "\tdu [path]    show the structure of the subtree under path or the current node\n");
    		  fprintf(stdout, "\texit         leave shell\n");
    		  fprintf(stdout, "\thelp         display this help\n");
    		  fprintf(stdout, "\tfree         display memory usage\n");
    		  fprintf(stdout, "\tload [name]  load a new document with name\n");
    		  fprintf(stdout, "\tls [path]    list contents of path or the current directory\n");
    #ifdef LIBXML_XPATH_ENABLED
    		  fprintf(stdout, "\txpath expr   evaluate the XPath expression in that context and print the result\n");
    #endif /* LIBXML_XPATH_ENABLED */
    		  fprintf(stdout, "\tpwd          display current working directory\n");
    		  fprintf(stdout, "\tquit         leave shell\n");
    		  fprintf(stdout, "\tsave [name]  save this document to name or the original name\n");
    		  fprintf(stdout, "\tvalidate     check the document for errors\n");
    		  fprintf(stdout, "\twrite [name] write the current node to the filename\n");
            } else if (!strcmp(command, "validate")) {
                xmlShellValidate(ctxt, arg, NULL, NULL);
            } else if (!strcmp(command, "load")) {
                xmlShellLoad(ctxt, arg, NULL, NULL);
            } else if (!strcmp(command, "save")) {
                xmlShellSave(ctxt, arg, NULL, NULL);
            } else if (!strcmp(command, "write")) {
                xmlShellWrite(ctxt, arg, NULL, NULL);
            } else if (!strcmp(command, "free")) {
                if (arg[0] == 0) {
                    xmlMemShow(stdout, 0);
                } else {
                    int len = 0;
    
                    sscanf(arg, "%d", &len);
                    xmlMemShow(stdout, len);
                }
            } else if (!strcmp(command, "pwd")) {
                char dir[500];
    
                if (!xmlShellPwd(ctxt, dir, ctxt->node, NULL))
                    fprintf(stdout, "%s\n", dir);
            } else if (!strcmp(command, "du")) {
                xmlShellDu(ctxt, NULL, ctxt->node, NULL);
            } else if (!strcmp(command, "base")) {
                xmlShellBase(ctxt, NULL, ctxt->node, NULL);
    #ifdef LIBXML_XPATH_ENABLED
            } else if (!strcmp(command, "xpath")) {
                if (arg[0] == 0) {
    		xmlGenericError(xmlGenericErrorContext,
    				"xpath: expression required\n");
    	    } else {
                    ctxt->pctxt->node = ctxt->node;
                    list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt);
    		xmlXPathDebugDumpObject(stdout, list, 0);
    		xmlXPathFreeObject(list);
    	    }
    #endif /* LIBXML_XPATH_ENABLED */
            } else if (!strcmp(command, "setbase")) {
                xmlShellSetBase(ctxt, arg, ctxt->node, NULL);
            } else if ((!strcmp(command, "ls")) || (!strcmp(command, "dir"))) {
                int dir = (!strcmp(command, "dir"));
    
                if (arg[0] == 0) {
                    if (dir)
                        xmlShellDir(ctxt, NULL, ctxt->node, NULL);
                    else
                        xmlShellList(ctxt, NULL, ctxt->node, NULL);
                } else {
                    ctxt->pctxt->node = ctxt->node;
    #ifdef LIBXML_XPATH_ENABLED
                    ctxt->pctxt->node = ctxt->node;
                    list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt);
    #else
                    list = NULL;
    #endif /* LIBXML_XPATH_ENABLED */
                    if (list != NULL) {
                        switch (list->type) {
                            case XPATH_UNDEFINED:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s: no such node\n", arg);
                                break;
                            case XPATH_NODESET:{
                                    int indx;
    
    				if (list->nodesetval == NULL)
    				    break;
    
                                    for (indx = 0;
                                         indx < list->nodesetval->nodeNr;
                                         indx++) {
                                        if (dir)
                                            xmlShellDir(ctxt, NULL,
                                                        list->nodesetval->
                                                        nodeTab[indx], NULL);
                                        else
                                            xmlShellList(ctxt, NULL,
                                                         list->nodesetval->
                                                         nodeTab[indx], NULL);
                                    }
                                    break;
                                }
                            case XPATH_BOOLEAN:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a Boolean\n", arg);
                                break;
                            case XPATH_NUMBER:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a number\n", arg);
                                break;
                            case XPATH_STRING:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a string\n", arg);
                                break;
                            case XPATH_POINT:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a point\n", arg);
                                break;
                            case XPATH_RANGE:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a range\n", arg);
                                break;
                            case XPATH_LOCATIONSET:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a range\n", arg);
                                break;
                            case XPATH_USERS:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is user-defined\n", arg);
                                break;
                            case XPATH_XSLT_TREE:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is an XSLT value tree\n",
                                                arg);
                                break;
                        }
    #ifdef LIBXML_XPATH_ENABLED
                        xmlXPathFreeObject(list);
    #endif
                    } else {
                        xmlGenericError(xmlGenericErrorContext,
                                        "%s: no such node\n", arg);
                    }
                    ctxt->pctxt->node = NULL;
                }
            } else if (!strcmp(command, "cd")) {
                if (arg[0] == 0) {
                    ctxt->node = (xmlNodePtr) ctxt->doc;
                } else {
    #ifdef LIBXML_XPATH_ENABLED
                    ctxt->pctxt->node = ctxt->node;
                    list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt);
    #else
                    list = NULL;
    #endif /* LIBXML_XPATH_ENABLED */
                    if (list != NULL) {
                        switch (list->type) {
                            case XPATH_UNDEFINED:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s: no such node\n", arg);
                                break;
                            case XPATH_NODESET:
                                if (list->nodesetval != NULL) {
    				if (list->nodesetval->nodeNr == 1) {
    				    ctxt->node = list->nodesetval->nodeTab[0];
    				} else
    				    xmlGenericError(xmlGenericErrorContext,
    						    "%s is a %d Node Set\n",
    						    arg,
    						    list->nodesetval->nodeNr);
                                } else
                                    xmlGenericError(xmlGenericErrorContext,
                                                    "%s is an empty Node Set\n",
                                                    arg);
                                break;
                            case XPATH_BOOLEAN:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a Boolean\n", arg);
                                break;
                            case XPATH_NUMBER:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a number\n", arg);
                                break;
                            case XPATH_STRING:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a string\n", arg);
                                break;
                            case XPATH_POINT:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a point\n", arg);
                                break;
                            case XPATH_RANGE:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a range\n", arg);
                                break;
                            case XPATH_LOCATIONSET:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a range\n", arg);
                                break;
                            case XPATH_USERS:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is user-defined\n", arg);
                                break;
                            case XPATH_XSLT_TREE:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is an XSLT value tree\n",
                                                arg);
                                break;
                        }
    #ifdef LIBXML_XPATH_ENABLED
                        xmlXPathFreeObject(list);
    #endif
                    } else {
                        xmlGenericError(xmlGenericErrorContext,
                                        "%s: no such node\n", arg);
                    }
                    ctxt->pctxt->node = NULL;
                }
            } else if (!strcmp(command, "cat")) {
                if (arg[0] == 0) {
                    xmlShellCat(ctxt, NULL, ctxt->node, NULL);
                } else {
                    ctxt->pctxt->node = ctxt->node;
    #ifdef LIBXML_XPATH_ENABLED
                    ctxt->pctxt->node = ctxt->node;
                    list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt);
    #else
                    list = NULL;
    #endif /* LIBXML_XPATH_ENABLED */
                    if (list != NULL) {
                        switch (list->type) {
                            case XPATH_UNDEFINED:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s: no such node\n", arg);
                                break;
                            case XPATH_NODESET:{
                                    int indx;
    
    				if (list->nodesetval == NULL)
    				    break;
    
                                    for (indx = 0;
                                         indx < list->nodesetval->nodeNr;
                                         indx++) {
                                        if (i > 0)
                                            fprintf(stdout, " -------\n");
                                        xmlShellCat(ctxt, NULL,
                                                    list->nodesetval->
                                                    nodeTab[indx], NULL);
                                    }
                                    break;
                                }
                            case XPATH_BOOLEAN:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a Boolean\n", arg);
                                break;
                            case XPATH_NUMBER:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a number\n", arg);
                                break;
                            case XPATH_STRING:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a string\n", arg);
                                break;
                            case XPATH_POINT:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a point\n", arg);
                                break;
                            case XPATH_RANGE:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a range\n", arg);
                                break;
                            case XPATH_LOCATIONSET:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is a range\n", arg);
                                break;
                            case XPATH_USERS:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is user-defined\n", arg);
                                break;
                            case XPATH_XSLT_TREE:
                                xmlGenericError(xmlGenericErrorContext,
                                                "%s is an XSLT value tree\n",
                                                arg);
                                break;
                        }
    #ifdef LIBXML_XPATH_ENABLED
                        xmlXPathFreeObject(list);
    #endif
                    } else {
                        xmlGenericError(xmlGenericErrorContext,
                                        "%s: no such node\n", arg);
                    }
                    ctxt->pctxt->node = NULL;
                }
            } else {
                xmlGenericError(xmlGenericErrorContext,
                                "Unknown command %s\n", command);
            }
            free(cmdline);          /* not xmlFree here ! */
        }
    #ifdef LIBXML_XPATH_ENABLED
        xmlXPathFreeContext(ctxt->pctxt);
    #endif /* LIBXML_XPATH_ENABLED */
        if (ctxt->loaded) {
            xmlFreeDoc(ctxt->doc);
        }
        if (ctxt->filename != NULL)
            xmlFree(ctxt->filename);
        xmlFree(ctxt);
        if (cmdline != NULL)
            free(cmdline);          /* not xmlFree here ! */
    }
    
    #endif /* LIBXML_DEBUG_ENABLED */