rtXmlNamespace.h File Reference

XML namespace handling structures and function definitions. More...

#include "rtxsrc/rtxContext.h"
#include "rtxsrc/rtxDynPtrArray.h"
#include "rtxsrc/rtxXmlQName.h"
#include "rtxmlsrc/rtXmlExternDefs.h"

Go to the source code of this file.

Defines
#define	RTXMLNSSETQNAME(qname, pNS)
	This macro populates the given QName structure with information from the given namespace structure (namespace URI and prefix).
Functions
OSXMLNamespace *	rtXmlNSAddNamespace (OSCTXT *pctxt, OSRTDList *pNSAttrs, const OSUTF8CHAR *prefix, const OSUTF8CHAR *uri)
	This function adds a namespace to the context namespace list.
OSBOOL	rtXmlNSEqual (OSXMLNamespace *pNS1, OSXMLNamespace *pNS2)
	This function checks if two namespace records are equal.
void	rtXmlNSFreeAttrList (OSCTXT *pctxt, OSRTDList *pNSAttrs)
	This function frees dynamic memory used to hold namespace attribute values.
const OSUTF8CHAR *	rtXmlNSGetPrefix (OSCTXT *pctxt, const OSUTF8CHAR *uri)
	This function gets a namespace prefix assigned to the given URI.
const OSUTF8CHAR *	rtXmlNSGetPrefixUsingIndex (OSCTXT *pctxt, const OSUTF8CHAR *uri, OSUINT32 idx)
	This function gets a namespace prefix assigned to the given URI using the given index to select a specific prefix from the URI/prefix map.
OSUINT32	rtXmlNSGetPrefixCount (OSCTXT *pctxt, const OSUTF8CHAR *uri)
	This function returns the total number of prefixes currently assigned to the given URI.
int	rtXmlNSGetPrefixIndex (OSCTXT *pctxt, const OSUTF8CHAR *uri, const OSUTF8CHAR *prefix, OSUINT32 *pcount)
	This function gets the index of a given prefix in the internal list of prefixes maintained for a given URI in teh namespace stack.
const OSUTF8CHAR *	rtXmlNSGetQName (OSCTXT *pctxt, OSUTF8CHAR *buf, size_t bufsiz, const OSUTF8CHAR *uri, const OSUTF8CHAR *localName)
	This function creates a QName in the given fixed-site buffer.
EXTXMLMETHOD const OSUTF8CHAR *	rtXmlNSGetAttrPrefix (OSCTXT *pctxt, const OSUTF8CHAR *namespaceURI, OSRTDList *pNSAttrs)
	This function returns a namespace prefix for use with attributes in the given namespace.
const OSUTF8CHAR *	rtXmlNSGetAttrQName (OSCTXT *pctxt, OSUTF8CHAR *buf, size_t bufsiz, OSXMLNamespace *pNS, const OSUTF8CHAR *localName, OSRTDList *pNSAttrs)
	This function creates a QName for a qualified attribute.
OSXMLNamespace *	rtXmlNSLookupURI (OSCTXT *pctxt, const OSUTF8CHAR *uri)
	This function looks up a namespace in the context namespace stack using URI as the key value.
OSXMLNamespace *	rtXmlNSLookupURIInList (OSRTDList *pNSAttrs, const OSUTF8CHAR *uri)
	This function looks up a namespace in the given list using URI as the key value.
const OSUTF8CHAR *	rtXmlNSLookupPrefixForURI (OSCTXT *pctxt, const OSUTF8CHAR *uri)
	This function looks up a namespace in the context namespace stack using URI as the key value and returns a non-empty prefix, if one has been defined.
const OSUTF8CHAR *	rtXmlNSLookupPrefix (OSCTXT *pctxt, const OSUTF8CHAR *prefix)
	This function looks up a namespace in the context namespace list using the prefix as the key value.
const OSUTF8CHAR *	rtXmlNSLookupPrefixFrag (OSCTXT *pctxt, const OSUTF8CHAR *prefix, size_t prefixLen)
	This function looks up a namespace in the context namespace list using the prefix as the key value.
void	rtXmlNSRemoveAll (OSCTXT *pctxt)
	This function removes all namespaces from the context namespace list and frees the dynamic memory used to hold the names.
OSXMLNamespace *	rtXmlNSSetNamespace (OSCTXT *pctxt, OSRTDList *pNSAttrs, const OSUTF8CHAR *prefix, const OSUTF8CHAR *uri, OSBOOL override)
	This function sets a namespace in the context namespace list.
const OSUTF8CHAR *	rtXmlNSNewPrefix (OSCTXT *pctxt, const OSUTF8CHAR *uri, OSRTDList *pNSAttrs)
	This function returns the next unused prefix of the form "nsX" where X is a number.
int	rtXmlNSAddPrefixLink (OSCTXT *pctxt, const OSUTF8CHAR *prefix, const OSUTF8CHAR *uri, const OSUTF8CHAR *nsTable[], OSUINT32 nsTableRowCount)
	Add a prefix link at the current stack level.
int	rtXmlNSFreeAllPrefixLinks (OSCTXT *pctxt, OSXMLNSPfxLinkStackNode *pStackNode)
	Free all prefixs links in the given namespace stack entry.
int	rtXmlNSFreePrefixLink (OSCTXT *pctxt, OSXMLNSPfxLink *plink)
	Free all data within a given namespace prefix link structure.
int	rtXmlNSGetIndex (OSCTXT *pctxt, const OSUTF8CHAR *prefix)
	Get namespace index for a given namespace prefix based on current namespace stack in context.
int	rtXmlNSPush (OSCTXT *pctxt)
	Push new namespace prefix mapping level onto stack.
int	rtXmlNSPop (OSCTXT *pctxt)
	Remove top namespace prefix mapping level from stack.
void	rtXmlNSSetURITable (OSCTXT *pctxt, const OSUTF8CHAR *data[], OSUINT32 nrows)
	Set namespace URI table in context.

---

Detailed Description

XML namespace handling structures and function definitions.

Definition in file rtXmlNamespace.h.

---

Define Documentation

#define RTXMLNSSETQNAME	(	qname,
		pNS		)

Value:

if (0 != pNS) { qname.nsPrefix = pNS->prefix; qname.nsURI = pNS->uri; } \
else { qname.nsPrefix = qname.nsURI = 0; }

This macro populates the given QName structure with information from the given namespace structure (namespace URI and prefix).

Parameters:

	qname	Reference to QName structure to be populated. Pointers to items in pNS are assigned directly to fields in qname. No copies of data are made.
	pNS	Pointer to namespace structure.

Definition at line 330 of file rtXmlNamespace.h.

---

Function Documentation

OSXMLNamespace* rtXmlNSAddNamespace	(	OSCTXT *	pctxt,
		OSRTDList *	pNSAttrs,
		const OSUTF8CHAR *	prefix,
		const OSUTF8CHAR *	uri
	)

This function adds a namespace to the context namespace list.

Parameters:

	pctxt	Pointer to OSCTXT structure
	pNSAttrs	Namespace attribute list to which namespace info is to be added.
	prefix	Namespace prefix to be added
	uri	Namespace URI to be added

Returns:

Pointer to namespace structure or NULL if not added.

OSBOOL rtXmlNSEqual	(	OSXMLNamespace *	pNS1,
		OSXMLNamespace *	pNS2
	)

This function checks if two namespace records are equal.

This does a a deep compare in that it will first check if the pointers are equal and then it will check if the contents are equal (same prefix and URI).

Parameters:

	pNS1	Pointer to first namespace records to check.
	pNS2	Pointer to second record.

Returns:

True if records are equal, false otherwise.

void rtXmlNSFreeAttrList	(	OSCTXT *	pctxt,
		OSRTDList *	pNSAttrs
	)

This function frees dynamic memory used to hold namespace attribute values.

Parameters:

	pctxt	Pointer to OSCTXT structure
	pNSAttrs	Pointer to namespace attribute list to be freed.

EXTXMLMETHOD const OSUTF8CHAR* rtXmlNSGetAttrPrefix	(	OSCTXT *	pctxt,
		const OSUTF8CHAR *	namespaceURI,
		OSRTDList *	pNSAttrs
	)

This function returns a namespace prefix for use with attributes in the given namespace.

If a prefix is not found for the namespace, a new namespace entry is created with a generated prefix.

Parameters:

	pctxt	Pointer to OSCTXT structure
	namespaceURI	Pointer to namespace URI
	pNSAttrs	List of namespace records. If null, the namespace list in the context will be used.

Returns:

The prefix.

const OSUTF8CHAR* rtXmlNSGetAttrQName	(	OSCTXT *	pctxt,
		OSUTF8CHAR *	buf,
		size_t	bufsiz,
		OSXMLNamespace *	pNS,
		const OSUTF8CHAR *	localName,
		OSRTDList *	pNSAttrs
	)

This function creates a QName for a qualified attribute.

If a prefix is not found for the name, a new namespace entry is created with a generated prefix.

Parameters:

	pctxt	Pointer to OSCTXT structure
	buf	Buffer into which qname will be written.
	bufsiz	Size of the buffer.
	pNS	Pointer to namespace URI and prefix structure.
	localName	Local name of the item.
	pNSAttrs	List of namespace records. If null, the namespace list in the context will be used.

Returns:

Pointer to QName buffer (buf).

const OSUTF8CHAR* rtXmlNSGetPrefix	(	OSCTXT *	pctxt,
		const OSUTF8CHAR *	uri
	)

This function gets a namespace prefix assigned to the given URI.

This gives preference to empty prefixes.

Parameters:

	pctxt	Pointer to OSCTXT structure
	uri	Namespace URI to be searched for

Returns:

Pointer to namespace prefix string. If a NULL or empty prefix was assigned to the URI, an empty sring is returned. Otherwise, any assigned prefix is returned. If no prefix was assigned, null is returned.

OSUINT32 rtXmlNSGetPrefixCount	(	OSCTXT *	pctxt,
		const OSUTF8CHAR *	uri
	)

This function returns the total number of prefixes currently assigned to the given URI.

Parameters:

	pctxt	Pointer to OSCTXT structure
	uri	Namespace URI to be searched for

Returns:

Count of prefixes assigned to the URI.

int rtXmlNSGetPrefixIndex	(	OSCTXT *	pctxt,
		const OSUTF8CHAR *	uri,
		const OSUTF8CHAR *	prefix,
		OSUINT32 *	pcount
	)

This function gets the index of a given prefix in the internal list of prefixes maintained for a given URI in teh namespace stack.

It also may return the total number of prefixes currently assigned to the URI.

Parameters:

	pctxt	Pointer to OSCTXT structure
	uri	Namespace URI to be searched for
	prefix	Namespace prefix for which to get index.
	pcount	Optional pointer to an integer count variable. If provided, the total number of prefixes currently assigned to the URI will be returned.

Returns:

Index to namespace prefix or -1 if the prefix is not assigned to the given URI.

const OSUTF8CHAR* rtXmlNSGetPrefixUsingIndex	(	OSCTXT *	pctxt,
		const OSUTF8CHAR *	uri,
		OSUINT32	idx
	)

This function gets a namespace prefix assigned to the given URI using the given index to select a specific prefix from the URI/prefix map.

Parameters:

	pctxt	Pointer to OSCTXT structure
	uri	Namespace URI to be searched for
	idx	Index to prefix in map. This only has meaning when multiple prefixes have been assigned to the given URI.

Returns:

Pointer to namespace prefix string

const OSUTF8CHAR* rtXmlNSGetQName	(	OSCTXT *	pctxt,
		OSUTF8CHAR *	buf,
		size_t	bufsiz,
		const OSUTF8CHAR *	uri,
		const OSUTF8CHAR *	localName
	)

This function creates a QName in the given fixed-site buffer.

If the name will not fit in the buffer, it is truncated.

Parameters:

	pctxt	Pointer to OSCTXT structure
	buf	Buffer into which qname will be written.
	bufsiz	Size of the buffer.
	uri	Namespace URI.
	localName	Local name of the item.

Returns:

Pointer to QName buffer (buf).

const OSUTF8CHAR* rtXmlNSLookupPrefix	(	OSCTXT *	pctxt,
		const OSUTF8CHAR *	prefix
	)

This function looks up a namespace in the context namespace list using the prefix as the key value.

Parameters:

	pctxt	Pointer to OSCTXT structure
	prefix	Namespace Prefix to be found.

Returns:

Pointer to namespace URI or NULL if not found.

const OSUTF8CHAR* rtXmlNSLookupPrefixForURI	(	OSCTXT *	pctxt,
		const OSUTF8CHAR *	uri
	)

This function looks up a namespace in the context namespace stack using URI as the key value and returns a non-empty prefix, if one has been defined.

Parameters:

	pctxt	Pointer to OSCTXT structure
	uri	Namespace URI to be found.

Returns:

Pointer to non-empty prefix. NULL if URI is not found or URI has no associated non-empty prefix.

const OSUTF8CHAR* rtXmlNSLookupPrefixFrag	(	OSCTXT *	pctxt,
		const OSUTF8CHAR *	prefix,
		size_t	prefixLen
	)

This function looks up a namespace in the context namespace list using the prefix as the key value.

Parameters:

	pctxt	Pointer to OSCTXT structure
	prefix	Namespace Prefix to be found.
	prefixLen	Namespace Prefix length.

Returns:

Pointer to namespace URI or NULL if not found.

OSXMLNamespace* rtXmlNSLookupURI	(	OSCTXT *	pctxt,
		const OSUTF8CHAR *	uri
	)

This function looks up a namespace in the context namespace stack using URI as the key value.

Parameters:

	pctxt	Pointer to OSCTXT structure
	uri	Namespace URI to be found.

Returns:

Pointer to namespace structure or NULL if not found.

OSXMLNamespace* rtXmlNSLookupURIInList	(	OSRTDList *	pNSAttrs,
		const OSUTF8CHAR *	uri
	)

This function looks up a namespace in the given list using URI as the key value.

Parameters:

	pNSAttrs	List of namespace records.
	uri	Namespace URI to be found.

Returns:

Pointer to namespace structure or NULL if not found.

const OSUTF8CHAR* rtXmlNSNewPrefix	(	OSCTXT *	pctxt,
		const OSUTF8CHAR *	uri,
		OSRTDList *	pNSAttrs
	)

This function returns the next unused prefix of the form "nsX" where X is a number.

The new namespace declaration is added to the list provided or the context list if a NULL pointer is passed for pNSAttrs.

Parameters:

	pctxt	Pointer to OSCTXT structure
	uri	Namespace URI. Must not be NULL or empty string.
	pNSAttrs	Pointer to list of namespace attributes. If null, the namespace list in the context will be used.

Returns:

New namespace prefix.

void rtXmlNSRemoveAll

(

OSCTXT *

pctxt

)

This function removes all namespaces from the context namespace list and frees the dynamic memory used to hold the names.

Parameters:

pctxt

Pointer to OSCTXT structure

OSXMLNamespace* rtXmlNSSetNamespace	(	OSCTXT *	pctxt,
		OSRTDList *	pNSAttrs,
		const OSUTF8CHAR *	prefix,
		const OSUTF8CHAR *	uri,
		OSBOOL	override
	)

This function sets a namespace in the context namespace list.

If the given namespace URI does not exist in the list, the namespace is added. If the URI is found, the action depends on the value of the override flag. If true, the value of the namespace prefix will be changed to the given prefix. If false, the existing namespace specification is not altered.

Parameters:

	pctxt	Pointer to OSCTXT structure
	pNSAttrs	Namespace attribute list to which namespace info is to be added.
	prefix	Namespace prefix
	uri	Namespace URI
	override	Should existing definition be changed?

Returns:

Pointer to namespace structure or NULL if not set.