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xmlschemas: incomplete XML Schemas structure implementation
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xmlschemas

xmlschemas - incomplete XML Schemas structure implementation

interface to the XML Schemas handling and schema validity checking, it is incomplete right now.

Author(s): Daniel Veillard

Synopsis

typedef struct _xmlSchema xmlSchema;
typedef struct _xmlSchemaParserCtxt xmlSchemaParserCtxt;
typedef xmlSchemaParserCtxt * xmlSchemaParserCtxtPtr;
typedef xmlSchema * xmlSchemaPtr;
typedef xmlSchemaSAXPlugStruct * xmlSchemaSAXPlugPtr;
typedef struct _xmlSchemaSAXPlug xmlSchemaSAXPlugStruct;
typedef struct _xmlSchemaValidCtxt xmlSchemaValidCtxt;
typedef xmlSchemaValidCtxt * xmlSchemaValidCtxtPtr;
typedef enum xmlSchemaValidError;
typedef enum xmlSchemaValidOption;
void	xmlSchemaDump			(FILE * output, 
					 xmlSchemaPtr schema);
void	xmlSchemaFree			(xmlSchemaPtr schema);
void	xmlSchemaFreeParserCtxt		(xmlSchemaParserCtxtPtr ctxt);
void	xmlSchemaFreeValidCtxt		(xmlSchemaValidCtxtPtr ctxt);
int	xmlSchemaGetParserErrors	(xmlSchemaParserCtxtPtr ctxt, 
					 xmlSchemaValidityErrorFunc * err, 
					 xmlSchemaValidityWarningFunc * warn, 
					 void ** ctx);
int	xmlSchemaGetValidErrors		(xmlSchemaValidCtxtPtr ctxt, 
					 xmlSchemaValidityErrorFunc * err, 
					 xmlSchemaValidityWarningFunc * warn, 
					 void ** ctx);
int	xmlSchemaIsValid		(xmlSchemaValidCtxtPtr ctxt);
xmlSchemaParserCtxtPtr	xmlSchemaNewDocParserCtxt	(xmlDocPtr doc);
xmlSchemaParserCtxtPtr	xmlSchemaNewMemParserCtxt	(const char * buffer, 
							 int size);
xmlSchemaParserCtxtPtr	xmlSchemaNewParserCtxt	(const char * URL);
xmlSchemaValidCtxtPtr	xmlSchemaNewValidCtxt	(xmlSchemaPtr schema);
xmlSchemaPtr	xmlSchemaParse		(xmlSchemaParserCtxtPtr ctxt);
xmlSchemaSAXPlugPtr	xmlSchemaSAXPlug	(xmlSchemaValidCtxtPtr ctxt, 
						 xmlSAXHandlerPtr * sax, 
						 void ** user_data);
int	xmlSchemaSAXUnplug		(xmlSchemaSAXPlugPtr plug);
void	xmlSchemaSetParserErrors	(xmlSchemaParserCtxtPtr ctxt, 
					 xmlSchemaValidityErrorFunc err, 
					 xmlSchemaValidityWarningFunc warn, 
					 void * ctx);
void	xmlSchemaSetParserStructuredErrors	(xmlSchemaParserCtxtPtr ctxt, 
						 xmlStructuredErrorFunc serror, 
						 void * ctx);
void	xmlSchemaSetValidErrors		(xmlSchemaValidCtxtPtr ctxt, 
					 xmlSchemaValidityErrorFunc err, 
					 xmlSchemaValidityWarningFunc warn, 
					 void * ctx);
int	xmlSchemaSetValidOptions	(xmlSchemaValidCtxtPtr ctxt, 
					 int options);
void	xmlSchemaSetValidStructuredErrors	(xmlSchemaValidCtxtPtr ctxt, 
						 xmlStructuredErrorFunc serror, 
						 void * ctx);
int	xmlSchemaValidCtxtGetOptions	(xmlSchemaValidCtxtPtr ctxt);
xmlParserCtxtPtr	xmlSchemaValidCtxtGetParserCtxt	(xmlSchemaValidCtxtPtr ctxt);
int	xmlSchemaValidateDoc		(xmlSchemaValidCtxtPtr ctxt, 
					 xmlDocPtr doc);
int	xmlSchemaValidateFile		(xmlSchemaValidCtxtPtr ctxt, 
					 const char * filename, 
					 int options);
int	xmlSchemaValidateOneElement	(xmlSchemaValidCtxtPtr ctxt, 
					 xmlNodePtr elem);
void	xmlSchemaValidateSetFilename	(xmlSchemaValidCtxtPtr vctxt, 
					 const char * filename);
void	xmlSchemaValidateSetLocator	(xmlSchemaValidCtxtPtr vctxt, 
					 xmlSchemaValidityLocatorFunc f, 
					 void * ctxt);
int	xmlSchemaValidateStream		(xmlSchemaValidCtxtPtr ctxt, 
					 xmlParserInputBufferPtr input, 
					 xmlCharEncoding enc, 
					 xmlSAXHandlerPtr sax, 
					 void * user_data);
typedef void xmlSchemaValidityErrorFunc	(void * ctx, 
					 const char * msg, 
					 ... ...);
typedef int xmlSchemaValidityLocatorFunc	(void * ctx, 
					 const char ** file, 
					 unsigned long * line);
typedef void xmlSchemaValidityWarningFunc	(void * ctx, 
					 const char * msg, 
					 ... ...);

Description

Details

Structure xmlSchema

struct _xmlSchema {
    const xmlChar *	name	: schema name
    const xmlChar *	targetNamespace	: the target namespace
    const xmlChar *	version
    const xmlChar *	id	: Obsolete
    xmlDocPtr	doc
    xmlSchemaAnnotPtr	annot
    int	flags
    xmlHashTablePtr	typeDecl
    xmlHashTablePtr	attrDecl
    xmlHashTablePtr	attrgrpDecl
    xmlHashTablePtr	elemDecl
    xmlHashTablePtr	notaDecl
    xmlHashTablePtr	schemasImports
    void *	_private	: unused by the library for users or bindings
    xmlHashTablePtr	groupDecl
    xmlDictPtr	dict
    void *	includes	: the includes, this is opaque for now
    int	preserve	: whether to free the document
    int	counter	: used to give anonymous components unique names
    xmlHashTablePtr	idcDef	: All identity-constraint defs.
    void *	volatiles	: Obsolete
} xmlSchema;

Structure xmlSchemaParserCtxt

struct _xmlSchemaParserCtxt {
The content of this structure is not made public by the API.
} xmlSchemaParserCtxt;

Typedef xmlSchemaParserCtxtPtr

xmlSchemaParserCtxt * xmlSchemaParserCtxtPtr;

Typedef xmlSchemaPtr

xmlSchema * xmlSchemaPtr;

Typedef xmlSchemaSAXPlugPtr

xmlSchemaSAXPlugStruct * xmlSchemaSAXPlugPtr;

Structure xmlSchemaSAXPlugStruct

struct _xmlSchemaSAXPlug {
The content of this structure is not made public by the API.
} xmlSchemaSAXPlugStruct;

Structure xmlSchemaValidCtxt

struct _xmlSchemaValidCtxt {
The content of this structure is not made public by the API.
} xmlSchemaValidCtxt;

Typedef xmlSchemaValidCtxtPtr

xmlSchemaValidCtxt * xmlSchemaValidCtxtPtr;

Enum xmlSchemaValidError

enum xmlSchemaValidError {
    XML_SCHEMAS_ERR_OK = 0
    XML_SCHEMAS_ERR_NOROOT = 1
    XML_SCHEMAS_ERR_UNDECLAREDELEM = 2
    XML_SCHEMAS_ERR_NOTTOPLEVEL = 3
    XML_SCHEMAS_ERR_MISSING = 4
    XML_SCHEMAS_ERR_WRONGELEM = 5
    XML_SCHEMAS_ERR_NOTYPE = 6
    XML_SCHEMAS_ERR_NOROLLBACK = 7
    XML_SCHEMAS_ERR_ISABSTRACT = 8
    XML_SCHEMAS_ERR_NOTEMPTY = 9
    XML_SCHEMAS_ERR_ELEMCONT = 10
    XML_SCHEMAS_ERR_HAVEDEFAULT = 11
    XML_SCHEMAS_ERR_NOTNILLABLE = 12
    XML_SCHEMAS_ERR_EXTRACONTENT = 13
    XML_SCHEMAS_ERR_INVALIDATTR = 14
    XML_SCHEMAS_ERR_INVALIDELEM = 15
    XML_SCHEMAS_ERR_NOTDETERMINIST = 16
    XML_SCHEMAS_ERR_CONSTRUCT = 17
    XML_SCHEMAS_ERR_INTERNAL = 18
    XML_SCHEMAS_ERR_NOTSIMPLE = 19
    XML_SCHEMAS_ERR_ATTRUNKNOWN = 20
    XML_SCHEMAS_ERR_ATTRINVALID = 21
    XML_SCHEMAS_ERR_VALUE = 22
    XML_SCHEMAS_ERR_FACET = 23
    XML_SCHEMAS_ERR_ = 24
    XML_SCHEMAS_ERR_XXX = 25
};

Enum xmlSchemaValidOption

enum xmlSchemaValidOption {
    XML_SCHEMA_VAL_VC_I_CREATE = 1 /*  Default/fixed: create an attribute node * or an element's text node on the instance. * */
};

Function type xmlSchemaValidityErrorFunc

void	xmlSchemaValidityErrorFunc	(void * ctx, 
					 const char * msg, 
					 ... ...)

Signature of an error callback from an XSD validation

ctx: the validation context
msg: the message
...: extra arguments

Function type xmlSchemaValidityLocatorFunc

int	xmlSchemaValidityLocatorFunc	(void * ctx, 
					 const char ** file, 
					 unsigned long * line)

A schemas validation locator, a callback called by the validator. This is used when file or node information are not available to find out what file and line number are affected

ctx: user provided context
file: returned file information
line: returned line information
Returns: 0 in case of success and -1 in case of error

Function type xmlSchemaValidityWarningFunc

void	xmlSchemaValidityWarningFunc	(void * ctx, 
					 const char * msg, 
					 ... ...)

Signature of a warning callback from an XSD validation

ctx: the validation context
msg: the message
...: extra arguments

xmlSchemaDump ()

void	xmlSchemaDump			(FILE * output, 
					 xmlSchemaPtr schema)

Dump a Schema structure.

output: the file output
schema: a schema structure

xmlSchemaFree ()

void	xmlSchemaFree			(xmlSchemaPtr schema)

Deallocate a Schema structure.

schema: a schema structure

xmlSchemaFreeParserCtxt ()

void	xmlSchemaFreeParserCtxt		(xmlSchemaParserCtxtPtr ctxt)

Free the resources associated to the schema parser context

ctxt: the schema parser context

xmlSchemaFreeValidCtxt ()

void	xmlSchemaFreeValidCtxt		(xmlSchemaValidCtxtPtr ctxt)

Free the resources associated to the schema validation context

ctxt: the schema validation context

xmlSchemaGetParserErrors ()

int	xmlSchemaGetParserErrors	(xmlSchemaParserCtxtPtr ctxt, 
					 xmlSchemaValidityErrorFunc * err, 
					 xmlSchemaValidityWarningFunc * warn, 
					 void ** ctx)

Get the callback information used to handle errors for a parser context

ctxt: a XMl-Schema parser context
err: the error callback result
warn: the warning callback result
ctx: contextual data for the callbacks result
Returns: -1 in case of failure, 0 otherwise

xmlSchemaGetValidErrors ()

int	xmlSchemaGetValidErrors		(xmlSchemaValidCtxtPtr ctxt, 
					 xmlSchemaValidityErrorFunc * err, 
					 xmlSchemaValidityWarningFunc * warn, 
					 void ** ctx)

Get the error and warning callback information

ctxt: a XML-Schema validation context
err: the error function result
warn: the warning function result
ctx: the functions context result
Returns: -1 in case of error and 0 otherwise

xmlSchemaIsValid ()

int	xmlSchemaIsValid		(xmlSchemaValidCtxtPtr ctxt)

Check if any error was detected during validation.

ctxt: the schema validation context
Returns: 1 if valid so far, 0 if errors were detected, and -1 in case of internal error.

xmlSchemaNewDocParserCtxt ()

xmlSchemaParserCtxtPtr	xmlSchemaNewDocParserCtxt	(xmlDocPtr doc)

Create an XML Schemas parse context for that document. NB. The document may be modified during the parsing process.

doc: a preparsed document tree
Returns: the parser context or NULL in case of error

xmlSchemaNewMemParserCtxt ()

xmlSchemaParserCtxtPtr	xmlSchemaNewMemParserCtxt	(const char * buffer, 
							 int size)

Create an XML Schemas parse context for that memory buffer expected to contain an XML Schemas file.

buffer: a pointer to a char array containing the schemas
size: the size of the array
Returns: the parser context or NULL in case of error

xmlSchemaNewParserCtxt ()

xmlSchemaParserCtxtPtr	xmlSchemaNewParserCtxt	(const char * URL)

Create an XML Schemas parse context for that file/resource expected to contain an XML Schemas file.

URL: the location of the schema
Returns: the parser context or NULL in case of error

xmlSchemaNewValidCtxt ()

xmlSchemaValidCtxtPtr	xmlSchemaNewValidCtxt	(xmlSchemaPtr schema)

Create an XML Schemas validation context based on the given schema.

schema: a precompiled XML Schemas
Returns: the validation context or NULL in case of error

xmlSchemaParse ()

xmlSchemaPtr	xmlSchemaParse		(xmlSchemaParserCtxtPtr ctxt)

parse a schema definition resource and build an internal XML Schema structure which can be used to validate instances.

ctxt: a schema validation context
Returns: the internal XML Schema structure built from the resource or NULL in case of error

xmlSchemaSAXPlug ()

xmlSchemaSAXPlugPtr	xmlSchemaSAXPlug	(xmlSchemaValidCtxtPtr ctxt, 
						 xmlSAXHandlerPtr * sax, 
						 void ** user_data)

Plug a SAX based validation layer in a SAX parsing event flow. The original @saxptr and @dataptr data are replaced by new pointers but the calls to the original will be maintained.

ctxt: a schema validation context
sax: a pointer to the original xmlSAXHandlerPtr
user_data: a pointer to the original SAX user data pointer
Returns: a pointer to a data structure needed to unplug the validation layer or NULL in case of errors.

xmlSchemaSAXUnplug ()

int	xmlSchemaSAXUnplug		(xmlSchemaSAXPlugPtr plug)

Unplug a SAX based validation layer in a SAX parsing event flow. The original pointers used in the call are restored.

plug: a data structure returned by xmlSchemaSAXPlug
Returns: 0 in case of success and -1 in case of failure.

xmlSchemaSetParserErrors ()

void	xmlSchemaSetParserErrors	(xmlSchemaParserCtxtPtr ctxt, 
					 xmlSchemaValidityErrorFunc err, 
					 xmlSchemaValidityWarningFunc warn, 
					 void * ctx)

Set the callback functions used to handle errors for a validation context

ctxt: a schema validation context
err: the error callback
warn: the warning callback
ctx: contextual data for the callbacks

xmlSchemaSetParserStructuredErrors ()

void	xmlSchemaSetParserStructuredErrors	(xmlSchemaParserCtxtPtr ctxt, 
						 xmlStructuredErrorFunc serror, 
						 void * ctx)

Set the structured error callback

ctxt: a schema parser context
serror: the structured error function
ctx: the functions context

xmlSchemaSetValidErrors ()

void	xmlSchemaSetValidErrors		(xmlSchemaValidCtxtPtr ctxt, 
					 xmlSchemaValidityErrorFunc err, 
					 xmlSchemaValidityWarningFunc warn, 
					 void * ctx)

Set the error and warning callback information

ctxt: a schema validation context
err: the error function
warn: the warning function
ctx: the functions context

xmlSchemaSetValidOptions ()

int	xmlSchemaSetValidOptions	(xmlSchemaValidCtxtPtr ctxt, 
					 int options)

Sets the options to be used during the validation.

ctxt: a schema validation context
options: a combination of xmlSchemaValidOption
Returns: 0 in case of success, -1 in case of an API error.

xmlSchemaSetValidStructuredErrors ()

void	xmlSchemaSetValidStructuredErrors	(xmlSchemaValidCtxtPtr ctxt, 
						 xmlStructuredErrorFunc serror, 
						 void * ctx)

Set the structured error callback

ctxt: a schema validation context
serror: the structured error function
ctx: the functions context

xmlSchemaValidCtxtGetOptions ()

int	xmlSchemaValidCtxtGetOptions	(xmlSchemaValidCtxtPtr ctxt)

Get the validation context options.

ctxt: a schema validation context
Returns: the option combination or -1 on error.

xmlSchemaValidCtxtGetParserCtxt ()

xmlParserCtxtPtr	xmlSchemaValidCtxtGetParserCtxt	(xmlSchemaValidCtxtPtr ctxt)

allow access to the parser context of the schema validation context

ctxt: a schema validation context
Returns: the parser context of the schema validation context or NULL in case of error.

xmlSchemaValidateDoc ()

int	xmlSchemaValidateDoc		(xmlSchemaValidCtxtPtr ctxt, 
					 xmlDocPtr doc)

Validate a document tree in memory.

ctxt: a schema validation context
doc: a parsed document tree
Returns: 0 if the document is schemas valid, a positive error code number otherwise and -1 in case of internal or API error.

xmlSchemaValidateFile ()

int	xmlSchemaValidateFile		(xmlSchemaValidCtxtPtr ctxt, 
					 const char * filename, 
					 int options)

Do a schemas validation of the given resource, it will use the SAX streamable validation internally.

ctxt: a schema validation context
filename: the URI of the instance
options: a future set of options, currently unused
Returns: 0 if the document is valid, a positive error code number otherwise and -1 in case of an internal or API error.

xmlSchemaValidateOneElement ()

int	xmlSchemaValidateOneElement	(xmlSchemaValidCtxtPtr ctxt, 
					 xmlNodePtr elem)

Validate a branch of a tree, starting with the given @elem.

ctxt: a schema validation context
elem: an element node
Returns: 0 if the element and its subtree is valid, a positive error code number otherwise and -1 in case of an internal or API error.

xmlSchemaValidateSetFilename ()

void	xmlSchemaValidateSetFilename	(xmlSchemaValidCtxtPtr vctxt, 
					 const char * filename)

Workaround to provide file error reporting information when this is not provided by current APIs

vctxt: the schema validation context
filename: the file name

xmlSchemaValidateSetLocator ()

void	xmlSchemaValidateSetLocator	(xmlSchemaValidCtxtPtr vctxt, 
					 xmlSchemaValidityLocatorFunc f, 
					 void * ctxt)

Allows to set a locator function to the validation context, which will be used to provide file and line information since those are not provided as part of the SAX validation flow Setting @f to NULL disable the locator.

vctxt: a schema validation context
f: the locator function pointer
ctxt: the locator context

xmlSchemaValidateStream ()

int	xmlSchemaValidateStream		(xmlSchemaValidCtxtPtr ctxt, 
					 xmlParserInputBufferPtr input, 
					 xmlCharEncoding enc, 
					 xmlSAXHandlerPtr sax, 
					 void * user_data)

Validate an input based on a flow of SAX event from the parser and forward the events to the @sax handler with the provided @user_data the user provided @sax handler must be a SAX2 one.

ctxt: a schema validation context
input: the input to use for reading the data
enc: an optional encoding information
sax: a SAX handler for the resulting events
user_data: the context to provide to the SAX handler.
Returns: 0 if the document is schemas valid, a positive error code number otherwise and -1 in case of internal or API error.