xmlschemas.c

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/**
 * xmlSchemaPSVIIDCBinding:
 *
 * The identity-constraint binding item of the [identity-constraint table].
 */
typedef struct _xmlSchemaPSVIIDCBinding xmlSchemaPSVIIDCBinding;
typedef xmlSchemaPSVIIDCBinding *xmlSchemaPSVIIDCBindingPtr;
struct _xmlSchemaPSVIIDCBinding {
    xmlSchemaPSVIIDCBindingPtr next; /* next binding of a specific node */
    xmlSchemaIDCPtr definition; /* the IDC definition */
    xmlSchemaPSVIIDCNodePtr *nodeTable; /* array of key-sequences */
    int nbNodes; /* number of entries in the node table */
    int sizeNodes; /* size of the node table */
    int nbDupls; /* number of already identified duplicates in the node 
                    table */
    /* int nbKeys; number of keys in each key-sequence */
};

#define XPATH_STATE_OBJ_TYPE_IDC_SELECTOR 1
#define XPATH_STATE_OBJ_TYPE_IDC_FIELD 2

#define XPATH_STATE_OBJ_MATCHES -2
#define XPATH_STATE_OBJ_BLOCKED -3

typedef struct _xmlSchemaIDCMatcher xmlSchemaIDCMatcher;
typedef xmlSchemaIDCMatcher *xmlSchemaIDCMatcherPtr;

/**
 * xmlSchemaIDCStateObj:
 *
 * The state object used to evaluate XPath expressions.
 */
typedef struct _xmlSchemaIDCStateObj xmlSchemaIDCStateObj;
typedef xmlSchemaIDCStateObj *xmlSchemaIDCStateObjPtr;
struct _xmlSchemaIDCStateObj {
    int type;    
    xmlSchemaIDCStateObjPtr next; /* next if in a list */
    int depth; /* depth of creation */
    int *history; /* list of (depth, state-id) tuples */
    int nbHistory;
    int sizeHistory;
    xmlSchemaIDCMatcherPtr matcher; /* the correspondent field/selector
                                       matcher */
    xmlSchemaIDCSelectPtr sel;
    void *xpathCtxt;
};

#define IDC_MATCHER 0

/**
 * xmlSchemaIDCMatcher:
 *
 * Used to  IDC selectors (and fields) successively.
 */
struct _xmlSchemaIDCMatcher {
    int type;
    int depth; /* the tree depth at creation time */
    xmlSchemaIDCMatcherPtr next; /* next in the list */
    xmlSchemaIDCAugPtr aidc; /* the augmented IDC item */
    xmlSchemaPSVIIDCKeyPtr **keySeqs; /* the key-sequences of the target
                                         elements */
    int sizeKeySeqs;
    int targetDepth;
};

/*
* Element info flags.
*/
#define XML_SCHEMA_ELEM_INFO_VALUE_NEEDED 1
/* #define XML_SCHEMA_ELEM_INFO_ATTR 2 */
/* #define XML_SCHEMA_ELEM_INFO_ELEM 4 */

/**
 * xmlSchemaNodeInfo:
 *
 * Holds information of an element node.
 */
typedef struct _xmlSchemaNodeInfo xmlSchemaNodeInfo;
typedef xmlSchemaNodeInfo *xmlSchemaNodeInfoPtr;
struct _xmlSchemaNodeInfo {
    int depth;
    int flags; /* combination of node info flags */
    xmlNodePtr node;
    const xmlChar *localName;
    const xmlChar *namespaceName;
    xmlSchemaTypePtr typeDef; /* the complex/simple type definition if any */
    xmlSchemaTypePtr decl; /* the element/attribute declaration */
    xmlSchemaValPtr value; /* the pre-computed value if any */
    xmlSchemaPSVIIDCBindingPtr idcTable; /* the table of PSVI IDC bindings
                                            for the scope element*/
    xmlSchemaIDCMatcherPtr idcMatchers; /* the IDC matchers for the scope
                                           element */
};

#define XML_SCHEMA_VALID_INVALID_NEG_WILDCARD 1<<0

/**
 * xmlSchemaValidCtxt:
 *
 * A Schemas validation context
 */
struct _xmlSchemaValidCtxt {
    void *userData;             /* user specific data block */
    xmlSchemaValidityErrorFunc error;   /* the callback in case of errors */
    xmlSchemaValidityWarningFunc warning; /* the callback in case of warning */
    xmlStructuredErrorFunc serror;

    xmlSchemaPtr schema;        /* The schema in use */
    xmlDocPtr doc;
    xmlParserInputBufferPtr input;
    xmlCharEncoding enc;
    xmlSAXHandlerPtr sax;
    void *user_data;

    xmlDocPtr myDoc;
    int err;
    int nberrors;

    xmlNodePtr node;
    xmlNodePtr cur;
    xmlSchemaTypePtr type;

    xmlRegExecCtxtPtr regexp;
    xmlSchemaValPtr value;

    xmlSchemaAttrStatePtr attrTop;
    xmlSchemaAttrStatePtr attr;
    /* xmlNodePtr scope; not used */
    int valueWS;
    int options;
    xmlNodePtr validationRoot;    
    xmlSchemaParserCtxtPtr pctxt;
    int xsiAssemble;

    int depth;
    xmlSchemaNodeInfoPtr *elemInfos; /* array of element informations */
    int sizeElemInfos;
    xmlSchemaNodeInfoPtr nodeInfo; /* the current element information */
    xmlSchemaNodeInfoPtr attrInfo; /* node infor for the current attribute */

    xmlSchemaIDCAugPtr aidcs; /* a list of augmented IDC informations */

    xmlSchemaIDCStateObjPtr xpathStates; /* first active state object. */
    xmlSchemaIDCStateObjPtr xpathStatePool; /* first stored state object. */
    
    xmlSchemaPSVIIDCNodePtr *idcNodes; /* list of all IDC node-table entries*/
    int nbIdcNodes;
    int sizeIdcNodes;

    xmlSchemaPSVIIDCKeyPtr *idcKeys; /* list of all IDC node-table entries */
    int nbIdcKeys;
    int sizeIdcKeys;

    int flags;
};

/*
 * These are the entries in the schemas importSchemas hash table
 */
typedef struct _xmlSchemaImport xmlSchemaImport;
typedef xmlSchemaImport *xmlSchemaImportPtr;
struct _xmlSchemaImport {
    const xmlChar *schemaLocation;
    xmlSchemaPtr schema; /* not used any more */
    xmlDocPtr doc;
    int isMain;
};

/*
 * These are the entries associated to includes in a schemas
 */
typedef struct _xmlSchemaInclude xmlSchemaInclude;
typedef xmlSchemaInclude *xmlSchemaIncludePtr;
struct _xmlSchemaInclude {
    xmlSchemaIncludePtr next;
    const xmlChar *schemaLocation;
    xmlDocPtr doc;
    const xmlChar *origTargetNamespace;
    const xmlChar *targetNamespace;
};

/************************************************************************
 * 									*
 * 			Some predeclarations				*
 * 									*
 ************************************************************************/

static int xmlSchemaParseInclude(xmlSchemaParserCtxtPtr ctxt,
                                 xmlSchemaPtr schema,
                                 xmlNodePtr node);
static void
xmlSchemaTypeFixup(xmlSchemaTypePtr typeDecl,
                   xmlSchemaParserCtxtPtr ctxt, const xmlChar * name);
static const xmlChar *
xmlSchemaFacetTypeToString(xmlSchemaTypeType type);
static int
xmlSchemaValidateSimpleTypeValue(xmlSchemaValidCtxtPtr ctxt, 
				 xmlSchemaTypePtr type,
				 const xmlChar *value,
				 int fireErrors,
				 int applyFacets,
				 int normalize,
				 int checkNodes);
static int
xmlSchemaValidateElementByDeclaration(xmlSchemaValidCtxtPtr ctxt,
				      xmlSchemaElementPtr elemDecl); 
static int
xmlSchemaValidateElementByWildcard(xmlSchemaValidCtxtPtr ctxt,
				   xmlSchemaWildcardPtr wild);
static int
xmlSchemaHasElemOrCharContent(xmlNodePtr node);
static int
xmlSchemaParseImport(xmlSchemaParserCtxtPtr ctxt, xmlSchemaPtr schema,
                     xmlNodePtr node);
static void
xmlSchemaCheckFacetValues(xmlSchemaTypePtr typeDecl,
                       xmlSchemaParserCtxtPtr ctxt);
static void
xmlSchemaClearValidCtxt(xmlSchemaValidCtxtPtr vctxt);
static int
xmlSchemaPostCreateVal(xmlSchemaValidCtxtPtr vctxt,
		       xmlSchemaTypePtr type,
		       const xmlChar *value,
		       xmlSchemaValPtr *val);
static xmlSchemaTypePtr
xmlSchemaGetSimpleContentType(xmlSchemaTypePtr complexType);
static int
xmlSchemaGetWhiteSpaceFacetValue(xmlSchemaTypePtr type);
static xmlSchemaTreeItemPtr
xmlSchemaParseModelGroup(xmlSchemaParserCtxtPtr ctxt, xmlSchemaPtr schema,
			 xmlNodePtr node, xmlSchemaTypeType type,
			 int withParticle);
static const xmlChar *
xmlSchemaCompTypeToString(xmlSchemaTypeType type);
static xmlSchemaTypeLinkPtr
xmlSchemaGetUnionSimpleTypeMemberTypes(xmlSchemaTypePtr type);

/************************************************************************
 *									*
 * 			Datatype error handlers				*
 *									*
 ************************************************************************/

/**
 * xmlSchemaPErrMemory:
 * @node: a context node
 * @extra:  extra informations
 *
 * Handle an out of memory condition
 */
static void
xmlSchemaPErrMemory(xmlSchemaParserCtxtPtr ctxt,
                    const char *extra, xmlNodePtr node)
{
    if (ctxt != NULL)
        ctxt->nberrors++;
    __xmlSimpleError(XML_FROM_SCHEMASP, XML_ERR_NO_MEMORY, node, NULL,
                     extra);
}

/**
 * xmlSchemaPErr:
 * @ctxt: the parsing context
 * @node: the context node
 * @error: the error code
 * @msg: the error message
 * @str1: extra data
 * @str2: extra data
 * 
 * Handle a parser error
 */
static void
xmlSchemaPErr(xmlSchemaParserCtxtPtr ctxt, xmlNodePtr node, int error,
              const char *msg, const xmlChar * str1, const xmlChar * str2)
{
    xmlGenericErrorFunc channel = NULL;
    xmlStructuredErrorFunc schannel = NULL;
    void *data = NULL;

    if (ctxt != NULL) {
        ctxt->nberrors++;
        channel = ctxt->error;
        data = ctxt->userData;
	schannel = ctxt->serror;
    }
    __xmlRaiseError(schannel, channel, data, ctxt, node, XML_FROM_SCHEMASP,
                    error, XML_ERR_ERROR, NULL, 0,
                    (const char *) str1, (const char *) str2, NULL, 0, 0,
                    msg, str1, str2);
}

/**
 * xmlSchemaPErr2:
 * @ctxt: the parsing context
 * @node: the context node
 * @node: the current child
 * @error: the error code
 * @msg: the error message
 * @str1: extra data
 * @str2: extra data
 * 
 * Handle a parser error
 */
static void
xmlSchemaPErr2(xmlSchemaParserCtxtPtr ctxt, xmlNodePtr node,
               xmlNodePtr child, int error,
               const char *msg, const xmlChar * str1, const xmlChar * str2)
{
    if (child != NULL)
        xmlSchemaPErr(ctxt, child, error, msg, str1, str2);
    else
        xmlSchemaPErr(ctxt, node, error, msg, str1, str2);
}


/**
 * xmlSchemaPErrExt:
 * @ctxt: the parsing context
 * @node: the context node
 * @error: the error code 
 * @strData1: extra data
 * @strData2: extra data
 * @strData3: extra data
 * @msg: the message
 * @str1:  extra parameter for the message display
 * @str2:  extra parameter for the message display
 * @str3:  extra parameter for the message display
 * @str4:  extra parameter for the message display
 * @str5:  extra parameter for the message display
 * 
 * Handle a parser error
 */
static void
xmlSchemaPErrExt(xmlSchemaParserCtxtPtr ctxt, xmlNodePtr node, int error,
		const xmlChar * strData1, const xmlChar * strData2, 
		const xmlChar * strData3, const char *msg, const xmlChar * str1, 
		const xmlChar * str2, const xmlChar * str3, const xmlChar * str4,
		const xmlChar * str5)
{

    xmlGenericErrorFunc channel = NULL;
    xmlStructuredErrorFunc schannel = NULL;
    void *data = NULL;

    if (ctxt != NULL) {
        ctxt->nberrors++;
        channel = ctxt->error;
        data = ctxt->userData;
	schannel = ctxt->serror;
    }
    __xmlRaiseError(schannel, channel, data, ctxt, node, XML_FROM_SCHEMASP,
                    error, XML_ERR_ERROR, NULL, 0,
                    (const char *) strData1, (const char *) strData2, 
		    (const char *) strData3, 0, 0, msg, str1, str2, 
		    str3, str4, str5);
}


/**
 * xmlSchemaVTypeErrMemory:
 * @node: a context node
 * @extra:  extra informations
 *
 * Handle an out of memory condition
 */
static void
xmlSchemaVErrMemory(xmlSchemaValidCtxtPtr ctxt,
                    const char *extra, xmlNodePtr node)
{
    if (ctxt != NULL) {
        ctxt->nberrors++;
        ctxt->err = XML_SCHEMAV_INTERNAL;
    }
    __xmlSimpleError(XML_FROM_SCHEMASV, XML_ERR_NO_MEMORY, node, NULL,
                     extra);
}

/**
 * xmlSchemaVErr3:
 * @ctxt: the validation context
 * @node: the context node
 * @error: the error code
 * @msg: the error message
 * @str1: extra data
 * @str2: extra data
 * @str3: extra data
 * 
 * Handle a validation error
 */
static void
xmlSchemaVErr3(xmlSchemaValidCtxtPtr ctxt, xmlNodePtr node, int error,
               const char *msg, const xmlChar *str1, const xmlChar *str2,
	       const xmlChar *str3)
{
    xmlStructuredErrorFunc schannel = NULL;
    xmlGenericErrorFunc channel = NULL;
    void *data = NULL;

    if (ctxt != NULL) {
        ctxt->nberrors++;
	ctxt->err = error;
        channel = ctxt->error;
        schannel = ctxt->serror;
        data = ctxt->userData;
    }
    /* reajust to global error numbers */
    /* Removed, since the old schema error codes have been 
    * substituted for the global error codes.
    *
    * error += XML_SCHEMAV_NOROOT - XML_SCHEMAS_ERR_NOROOT; 
    */
    __xmlRaiseError(schannel, channel, data, ctxt, node, XML_FROM_SCHEMASV,
                    error, XML_ERR_ERROR, NULL, 0,
                    (const char *) str1, (const char *) str2,
		    (const char *) str3, 0, 0,
                    msg, str1, str2, str3);
}

/**
 * xmlSchemaVErrExt:
 * @ctxt: the validation context
 * @node: the context node
 * @error: the error code 
 * @msg: the message
 * @str1:  extra parameter for the message display
 * @str2:  extra parameter for the message display
 * @str3:  extra parameter for the message display
 * @str4:  extra parameter for the message display
 * @str5:  extra parameter for the message display
 * 
 * Handle a validation error
 */
static void
xmlSchemaVErrExt(xmlSchemaValidCtxtPtr ctxt, xmlNodePtr node, int error,
		 const char *msg, const xmlChar * str1, 
		 const xmlChar * str2, const xmlChar * str3, 
		 const xmlChar * str4, const xmlChar * str5)
{
    xmlStructuredErrorFunc schannel = NULL;
    xmlGenericErrorFunc channel = NULL;
    void *data = NULL;