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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

Enum xmlSchemaWhitespaceValueType
int	xmlSchemaCheckFacet		(xmlSchemaFacetPtr facet, 
xmlSchemaTypePtr typeDecl,
xmlSchemaParserCtxtPtr pctxt,
const xmlChar * name)
void	xmlSchemaCleanupTypes		(void)
xmlChar *	xmlSchemaCollapseString	(const xmlChar * value)
int	xmlSchemaCompareValues		(xmlSchemaValPtr x, 
xmlSchemaValPtr y)
int	xmlSchemaCompareValuesWhtsp	(xmlSchemaValPtr x, 
xmlSchemaWhitespaceValueType xws,
xmlSchemaValPtr y,
xmlSchemaWhitespaceValueType yws)
xmlSchemaValPtr	xmlSchemaCopyValue	(xmlSchemaValPtr val)
void	xmlSchemaFreeFacet		(xmlSchemaFacetPtr facet)
void	xmlSchemaFreeValue		(xmlSchemaValPtr value)
xmlSchemaTypePtr	xmlSchemaGetBuiltInListSimpleTypeItemType	(xmlSchemaTypePtr type)
xmlSchemaTypePtr	xmlSchemaGetBuiltInType	(xmlSchemaValType type)
int	xmlSchemaGetCanonValue		(xmlSchemaValPtr val, 
const xmlChar ** retValue)
int	xmlSchemaGetCanonValueWhtsp	(xmlSchemaValPtr val, 
const xmlChar ** retValue,
xmlSchemaWhitespaceValueType ws)
unsigned long	xmlSchemaGetFacetValueAsULong	(xmlSchemaFacetPtr facet)
xmlSchemaTypePtr	xmlSchemaGetPredefinedType	(const xmlChar * name, 
const xmlChar * ns)
xmlSchemaValType	xmlSchemaGetValType	(xmlSchemaValPtr val)
void	xmlSchemaInitTypes		(void)
int	xmlSchemaIsBuiltInTypeFacet	(xmlSchemaTypePtr type, 
int facetType)
xmlSchemaFacetPtr	xmlSchemaNewFacet	(void)
xmlSchemaValPtr	xmlSchemaNewNOTATIONValue	(const xmlChar * name, 
const xmlChar * ns)
xmlSchemaValPtr	xmlSchemaNewQNameValue	(const xmlChar * namespaceName, 
const xmlChar * localName)
xmlSchemaValPtr	xmlSchemaNewStringValue	(xmlSchemaValType type, 
const xmlChar * value)
int	xmlSchemaValPredefTypeNode	(xmlSchemaTypePtr type, 
const xmlChar * value,
xmlSchemaValPtr * val,
xmlNodePtr node)
int	xmlSchemaValPredefTypeNodeNoNorm	(xmlSchemaTypePtr type, 
const xmlChar * value,
xmlSchemaValPtr * val,
xmlNodePtr node)
int	xmlSchemaValidateFacet		(xmlSchemaTypePtr base, 
xmlSchemaFacetPtr facet,
const xmlChar * value,
xmlSchemaValPtr val)
int	xmlSchemaValidateFacetWhtsp	(xmlSchemaFacetPtr facet, 
xmlSchemaWhitespaceValueType fws,
xmlSchemaValType valType,
const xmlChar * value,
xmlSchemaValPtr val,
xmlSchemaWhitespaceValueType ws)
int	xmlSchemaValidateLengthFacet	(xmlSchemaTypePtr type, 
xmlSchemaFacetPtr facet,
const xmlChar * value,
xmlSchemaValPtr val,
unsigned long * length)
int	xmlSchemaValidateLengthFacetWhtsp	(xmlSchemaFacetPtr facet, 
xmlSchemaValType valType,
const xmlChar * value,
xmlSchemaValPtr val,
unsigned long * length,
xmlSchemaWhitespaceValueType ws)
int	xmlSchemaValidateListSimpleTypeFacet	(xmlSchemaFacetPtr facet, 
const xmlChar * value,
unsigned long actualLen,
unsigned long * expectedLen)
int	xmlSchemaValidatePredefinedType	(xmlSchemaTypePtr type, 
const xmlChar * value,
xmlSchemaValPtr * val)
int	xmlSchemaValueAppend		(xmlSchemaValPtr prev, 
xmlSchemaValPtr cur)
int	xmlSchemaValueGetAsBoolean	(xmlSchemaValPtr val)
const xmlChar *	xmlSchemaValueGetAsString	(xmlSchemaValPtr val)
xmlSchemaValPtr	xmlSchemaValueGetNext	(xmlSchemaValPtr cur)
xmlChar *	xmlSchemaWhiteSpaceReplace	(const xmlChar * value)

Description

Enum xmlSchemaWhitespaceValueType

Enum xmlSchemaWhitespaceValueType {
    XML_SCHEMA_WHITESPACE_UNKNOWN = 0
    XML_SCHEMA_WHITESPACE_PRESERVE = 1
    XML_SCHEMA_WHITESPACE_REPLACE = 2
    XML_SCHEMA_WHITESPACE_COLLAPSE = 3
}

Function: xmlSchemaCheckFacet

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

Checks and computes the values of facets.

facet:the facet
typeDecl:the schema type definition
pctxt:the schema parser context or NULL
name:the optional name of the type
Returns:0 if valid, a positive error code if not valid and -1 in case of an internal or API error.

Function: xmlSchemaCleanupTypes

void	xmlSchemaCleanupTypes		(void)

Cleanup the default XML Schemas type library

Function: xmlSchemaCollapseString

xmlChar *	xmlSchemaCollapseString	(const xmlChar * value)

Removes and normalize white spaces in the string

value:a value
Returns:the new string or NULL if no change was required.

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: xmlSchemaCompareValuesWhtsp

int	xmlSchemaCompareValuesWhtsp	(xmlSchemaValPtr x, 
xmlSchemaWhitespaceValueType xws,
xmlSchemaValPtr y,
xmlSchemaWhitespaceValueType yws)

Compare 2 values

x:a first value
xws:the whitespace value of x
y:a second value
yws:the whitespace value of y
Returns:-1 if x < y, 0 if x == y, 1 if x > y, 2 if x <> y, and -2 in case of error

Function: xmlSchemaCopyValue

xmlSchemaValPtr	xmlSchemaCopyValue	(xmlSchemaValPtr val)

Copies the precomputed value. This duplicates any string within.

val:the precomputed value to be copied
Returns:the copy or NULL if a copy for a data-type is not implemented.

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: xmlSchemaGetBuiltInListSimpleTypeItemType

xmlSchemaTypePtr	xmlSchemaGetBuiltInListSimpleTypeItemType	(xmlSchemaTypePtr type)

Lookup function

type:the built-in simple type.
Returns:the item type of @type as defined by the built-in datatype hierarchy of XML Schema Part 2: Datatypes, or NULL in case of an error.

Function: xmlSchemaGetBuiltInType

xmlSchemaTypePtr	xmlSchemaGetBuiltInType	(xmlSchemaValType type)

Gives you the type struct for a built-in type by its type id.

type:the type of the built in type
Returns:the type if found, NULL otherwise.

Function: xmlSchemaGetCanonValue

int	xmlSchemaGetCanonValue		(xmlSchemaValPtr val, 
const xmlChar ** retValue)

Get a the cononical lexical representation of the value. The caller has to FREE the returned retValue. WARNING: Some value types are not supported yet, resulting in a @retValue of "???". TODO: XML Schema 1.0 does not define canonical representations for: duration, gYearMonth, gYear, gMonthDay, gMonth, gDay, anyURI, QName, NOTATION. This will be fixed in XML Schema 1.1.

val:the precomputed value
retValue:the returned value
Returns:0 if the value could be built, 1 if the value type is not supported yet and -1 in case of API errors.

Function: xmlSchemaGetCanonValueWhtsp

int	xmlSchemaGetCanonValueWhtsp	(xmlSchemaValPtr val, 
const xmlChar ** retValue,
xmlSchemaWhitespaceValueType ws)

Get a the cononical representation of the value. The caller has to free the returned @retValue.

val:the precomputed value
retValue:the returned value
ws:the whitespace type of the value
Returns:0 if the value could be built, 1 if the value type is not supported yet and -1 in case of API errors.

Function: xmlSchemaGetFacetValueAsULong

unsigned long	xmlSchemaGetFacetValueAsULong	(xmlSchemaFacetPtr facet)

Extract the value of a facet

facet:an schemas type facet
Returns:the value as a long

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: xmlSchemaGetValType

xmlSchemaValType	xmlSchemaGetValType	(xmlSchemaValPtr val)

Accessor for the type of a value

val:a schemas value
Returns:the xmlSchemaValType of the value

Function: xmlSchemaInitTypes

void	xmlSchemaInitTypes		(void)

Initialize the default XML Schemas type library

Function: xmlSchemaIsBuiltInTypeFacet

int	xmlSchemaIsBuiltInTypeFacet	(xmlSchemaTypePtr type, 
int facetType)

Evaluates if a specific facet can be used in conjunction with a type.

type:the built-in type
facetType:the facet type
Returns:1 if the facet can be used with the given built-in type, 0 otherwise and -1 in case the type is not a built-in type.

Function: xmlSchemaNewFacet

xmlSchemaFacetPtr	xmlSchemaNewFacet	(void)

Allocate a new Facet structure.

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

Function: xmlSchemaNewNOTATIONValue

xmlSchemaValPtr	xmlSchemaNewNOTATIONValue	(const xmlChar * name, 
const xmlChar * ns)

Allocate a new NOTATION value. The given values are consumed and freed with the struct.

name:the notation name
ns:the notation namespace name or NULL
Returns:a pointer to the new value or NULL in case of error

Function: xmlSchemaNewQNameValue

xmlSchemaValPtr	xmlSchemaNewQNameValue	(const xmlChar * namespaceName, 
const xmlChar * localName)

Allocate a new QName value. The given values are consumed and freed with the struct.

namespaceName:the namespace name
localName:the local name
Returns:a pointer to the new value or NULL in case of an error.

Function: xmlSchemaNewStringValue

xmlSchemaValPtr	xmlSchemaNewStringValue	(xmlSchemaValType type, 
const xmlChar * value)

Allocate a new simple type value. The type can be of XML_SCHEMAS_STRING. WARNING: This one is intended to be expanded for other string based types. We need this for anySimpleType as well. The given value is consumed and freed with the struct.

type:the value type
value:the value
Returns:a pointer to the new value or NULL in case of 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: xmlSchemaValPredefTypeNodeNoNorm

int	xmlSchemaValPredefTypeNodeNoNorm	(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. This one does apply any normalization to the value.

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: xmlSchemaValidateFacetWhtsp

int	xmlSchemaValidateFacetWhtsp	(xmlSchemaFacetPtr facet, 
xmlSchemaWhitespaceValueType fws,
xmlSchemaValType valType,
const xmlChar * value,
xmlSchemaValPtr val,
xmlSchemaWhitespaceValueType ws)

Check a value against a facet condition. This takes value normalization according to the specified whitespace types into account. Note that @value needs to be the *normalized* value if the facet is of type "pattern".

facet:the facet to check
fws:the whitespace type of the facet's value
valType:the built-in type of the value
value:the lexical (or normalized for pattern) repr of the value to validate
val:the precomputed value
ws:the whitespace type of the 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: xmlSchemaValidateLengthFacet

int	xmlSchemaValidateLengthFacet	(xmlSchemaTypePtr type, 
xmlSchemaFacetPtr facet,
const xmlChar * value,
xmlSchemaValPtr val,
unsigned long * length)

Checka a value against a "length", "minLength" and "maxLength" facet; sets @length to the computed length of @value.

type:the built-in type
facet:the facet to check
value:the lexical repr. of the value to be validated
val:the precomputed value
length:the actual length of the value
Returns:0 if the value is valid, a positive error code otherwise and -1 in case of an internal or API error.

Function: xmlSchemaValidateLengthFacetWhtsp

int	xmlSchemaValidateLengthFacetWhtsp	(xmlSchemaFacetPtr facet, 
xmlSchemaValType valType,
const xmlChar * value,
xmlSchemaValPtr val,
unsigned long * length,
xmlSchemaWhitespaceValueType ws)

Checka a value against a "length", "minLength" and "maxLength" facet; sets @length to the computed length of @value.

facet:the facet to check
valType:the built-in type
value:the lexical repr. of the value to be validated
val:the precomputed value
length:the actual length of the value
ws:the whitespace type of the value
Returns:0 if the value is valid, a positive error code otherwise and -1 in case of an internal or API error.

Function: xmlSchemaValidateListSimpleTypeFacet

int	xmlSchemaValidateListSimpleTypeFacet	(xmlSchemaFacetPtr facet, 
const xmlChar * value,
unsigned long actualLen,
unsigned long * expectedLen)

Checks the value of a list simple type against a facet.

facet:the facet to check
value:the lexical repr of the value to validate
actualLen:the number of list items
expectedLen:the resulting expected number of list items
Returns:0 if the value is valid, a positive error code number otherwise and -1 in case of an internal 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.

Function: xmlSchemaValueAppend

int	xmlSchemaValueAppend		(xmlSchemaValPtr prev, 
xmlSchemaValPtr cur)

Appends a next sibling to a list of computed values.

prev:the value
cur:the value to be appended
Returns:0 if succeeded and -1 on API errors.

Function: xmlSchemaValueGetAsBoolean

int	xmlSchemaValueGetAsBoolean	(xmlSchemaValPtr val)

Accessor for the boolean value of a computed value.

val:the value
Returns:1 if true and 0 if false, or in case of an error. Hmm.

Function: xmlSchemaValueGetAsString

const xmlChar *	xmlSchemaValueGetAsString	(xmlSchemaValPtr val)

Accessor for the string value of a computed value.

val:the value
Returns:the string value or NULL if there was none, or on API errors.

Function: xmlSchemaValueGetNext

xmlSchemaValPtr	xmlSchemaValueGetNext	(xmlSchemaValPtr cur)

Accessor for the next sibling of a list of computed values.

cur:the value
Returns:the next value or NULL if there was none, or on API errors.

Function: xmlSchemaWhiteSpaceReplace

xmlChar *	xmlSchemaWhiteSpaceReplace	(const xmlChar * value)

Replaces 0xd, 0x9 and 0xa with a space.

value:a value
Returns:the new string or NULL if no change was required.

Daniel Veillard