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## Module xmlschemastypes from libxml2

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module providing the XML Schema Datatypes implementation both definition and validity checking

## Table of Contents

    int	xmlSchemaCheckFacet		(xmlSchemaFacetPtr facet,
    					 xmlSchemaTypePtr typeDecl,
    					 xmlSchemaParserCtxtPtr ctxt,
    					 const xmlChar * name)

    void	xmlSchemaCleanupTypes		(void)

    int	xmlSchemaCompareValues		(xmlSchemaValPtr x,
    					 xmlSchemaValPtr y)

    void	xmlSchemaFreeFacet		(xmlSchemaFacetPtr facet)

    void	xmlSchemaFreeValue		(xmlSchemaValPtr value)

    xmlSchemaTypePtr	xmlSchemaGetPredefinedType	(const xmlChar * name,
    							 const xmlChar * ns)

    void	xmlSchemaInitTypes		(void)

    xmlSchemaFacetPtr	xmlSchemaNewFacet	(void)

    int	xmlSchemaValPredefTypeNode	(xmlSchemaTypePtr type,
    					 const xmlChar * value,
    					 xmlSchemaValPtr * val,
    					 xmlNodePtr node)

    int	xmlSchemaValidateFacet		(xmlSchemaTypePtr base,
    					 xmlSchemaFacetPtr facet,
    					 const xmlChar * value,
    					 xmlSchemaValPtr val)

    int	xmlSchemaValidatePredefinedType	(xmlSchemaTypePtr type,
    					 const xmlChar * value,
    					 xmlSchemaValPtr * val)

## Description

### Function: xmlSchemaCheckFacet

    int	xmlSchemaCheckFacet		(xmlSchemaFacetPtr facet,
    					 xmlSchemaTypePtr typeDecl,
    					 xmlSchemaParserCtxtPtr ctxt,
    					 const xmlChar * name)

Checks the default values types, especially for facets

`facet`: | the facet
`typeDecl`: | the schema type definition
`ctxt`: | the schema parser context or NULL
`name`: | name of the type
`Returns`: | 0 if okay or -1 in cae of error

### Function: xmlSchemaCleanupTypes

    void	xmlSchemaCleanupTypes		(void)

Cleanup the default XML Schemas type library

### Function: xmlSchemaCompareValues

    int	xmlSchemaCompareValues		(xmlSchemaValPtr x,
    					 xmlSchemaValPtr y)

Compare 2 values

`x`: | a first value
`y`: | a second value
`Returns`: | -1 if x < y, 0 if x == y, 1 if x > y, 2 if x <> y, and -2 in case of error

### Function: xmlSchemaFreeFacet

    void	xmlSchemaFreeFacet		(xmlSchemaFacetPtr facet)

Deallocate a Schema Facet structure.

`facet`: | a schema facet structure

### Function: xmlSchemaFreeValue

    void	xmlSchemaFreeValue		(xmlSchemaValPtr value)

Cleanup the default XML Schemas type library

`value`: | the value to free

### Function: xmlSchemaGetPredefinedType

    xmlSchemaTypePtr	xmlSchemaGetPredefinedType	(const xmlChar * name,
    							 const xmlChar * ns)

Lookup a type in the default XML Schemas type library

`name`: | the type name
`ns`: | the URI of the namespace usually "http://www.w3.org/2001/XMLSchema"
`Returns`: | the type if found, NULL otherwise

### Function: xmlSchemaInitTypes

    void	xmlSchemaInitTypes		(void)

Initialize the default XML Schemas type library

### Function: xmlSchemaNewFacet

    xmlSchemaFacetPtr	xmlSchemaNewFacet	(void)

Allocate a new Facet structure.

`Returns`: | the newly allocated structure or NULL in case or error

### Function: xmlSchemaValPredefTypeNode

    int	xmlSchemaValPredefTypeNode	(xmlSchemaTypePtr type,
    					 const xmlChar * value,
    					 xmlSchemaValPtr * val,
    					 xmlNodePtr node)

Check that a value conforms to the lexical space of the predefined type. if true a value is computed and returned in @val.

`type`: | the predefined type
`value`: | the value to check
`val`: | the return computed value
`node`: | the node containing the value
`Returns`: | 0 if this validates, a positive error code number otherwise and -1 in case of internal or API error.

### Function: xmlSchemaValidateFacet

    int	xmlSchemaValidateFacet		(xmlSchemaTypePtr base,
    					 xmlSchemaFacetPtr facet,
    					 const xmlChar * value,
    					 xmlSchemaValPtr val)

Check a value against a facet condition

`base`: | the base type
`facet`: | the facet to check
`value`: | the lexical repr of the value to validate
`val`: | the precomputed value
`Returns`: | 0 if the element is schemas valid, a positive error code number otherwise and -1 in case of internal or API error.

### Function: xmlSchemaValidatePredefinedType

    int	xmlSchemaValidatePredefinedType	(xmlSchemaTypePtr type,
    					 const xmlChar * value,
    					 xmlSchemaValPtr * val)

Check that a value conforms to the lexical space of the predefined type. if true a value is computed and returned in @val.

`type`: | the predefined type
`value`: | the value to check
`val`: | the return computed value
`Returns`: | 0 if this validates, a positive error code number otherwise and -1 in case of internal or API error.

Daniel Veillard