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183 lines
4.8 KiB
C
183 lines
4.8 KiB
C
/*
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* xlink.h : interfaces to the hyperlinks detection module
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*
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* See Copyright for the status of this software.
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*
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* Related specification: http://www.w3.org/TR/xlink
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* http://www.w3.org/HTML/
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* and XBase
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*
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* Daniel.Veillard@w3.org
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*/
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#ifndef __XML_XLINK_H__
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#define __XML_XLINK_H__
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#include <libxml/tree.h>
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#ifdef __cplusplus
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#define extern "C" {
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#endif
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/**
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* Various defines for the various Link properties.
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*
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* NOTE: the link detection layer will try to resolve QName expansion
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* of namespaces, if "foo" is the prefix for "http://foo.com/"
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* then the link detection layer will expand role="foo:myrole"
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* to "http://foo.com/:myrole"
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* NOTE: the link detection layer will expand URI-Refences found on
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* href attributes by using the base mechanism if found.
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*/
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typedef xmlChar *xlinkHRef;
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typedef xmlChar *xlinkRole;
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typedef xmlChar *xlinkTitle;
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typedef enum {
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XLINK_TYPE_NONE = 0,
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XLINK_TYPE_SIMPLE,
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XLINK_TYPE_EXTENDED,
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XLINK_TYPE_EXTENDED_SET
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} xlinkType;
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typedef enum {
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XLINK_SHOW_NONE = 0,
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XLINK_SHOW_NEW,
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XLINK_SHOW_EMBED,
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XLINK_SHOW_REPLACE
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} xlinkShow;
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typedef enum {
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XLINK_ACTUATE_NONE = 0,
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XLINK_ACTUATE_AUTO,
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XLINK_ACTUATE_ONREQUEST
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} xlinkActuate;
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/**
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* xlinkNodeDetectFunc:
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* @ctx: user data pointer
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* @node: the node to check
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*
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* This is the prototype for the link detection routine
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* It calls the default link detection callbacks upon link detection.
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*/
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typedef void
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(*xlinkNodeDetectFunc) (void *ctx,
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xmlNodePtr node);
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/**
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* The link detection module interract with the upper layers using
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* a set of callback registered at parsing time.
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*/
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/**
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* xlinkSimpleLinkFunk:
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* @ctx: user data pointer
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* @node: the node carrying the link
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* @href: the target of the link
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* @role: the role string
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* @title: the link title
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*
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* This is the prototype for a simple link detection callback.
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*/
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typedef void
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(*xlinkSimpleLinkFunk) (void *ctx,
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xmlNodePtr node,
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const xlinkHRef href,
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const xlinkRole role,
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const xlinkTitle title);
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/**
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* xlinkExtendedLinkFunk:
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* @ctx: user data pointer
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* @node: the node carrying the link
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* @nbLocators: the number of locators detected on the link
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* @hrefs: pointer to the array of locator hrefs
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* @roles: pointer to the array of locator roles
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* @nbArcs: the number of arcs detected on the link
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* @from: pointer to the array of source roles found on the arcs
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* @to: pointer to the array of target roles found on the arcs
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* @show: array of values for the show attributes found on the arcs
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* @actuate: array of values for the actuate attributes found on the arcs
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* @nbTitles: the number of titles detected on the link
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* @title: array of titles detected on the link
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* @langs: array of xml:lang values for the titles
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*
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* This is the prototype for a extended link detection callback.
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*/
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typedef void
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(*xlinkExtendedLinkFunk)(void *ctx,
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xmlNodePtr node,
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int nbLocators,
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const xlinkHRef *hrefs,
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const xlinkRole *roles,
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int nbArcs,
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const xlinkRole *from,
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const xlinkRole *to,
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xlinkShow *show,
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xlinkActuate *actuate,
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int nbTitles,
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const xlinkTitle *titles,
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const xmlChar **langs);
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/**
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* xlinkExtendedLinkSetFunk:
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* @ctx: user data pointer
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* @node: the node carrying the link
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* @nbLocators: the number of locators detected on the link
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* @hrefs: pointer to the array of locator hrefs
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* @roles: pointer to the array of locator roles
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* @nbTitles: the number of titles detected on the link
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* @title: array of titles detected on the link
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* @langs: array of xml:lang values for the titles
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*
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* This is the prototype for a extended link set detection callback.
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*/
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typedef void
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(*xlinkExtendedLinkSetFunk) (void *ctx,
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xmlNodePtr node,
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int nbLocators,
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const xlinkHRef *hrefs,
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const xlinkRole *roles,
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int nbTitles,
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const xlinkTitle *titles,
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const xmlChar **langs);
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/**
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* This is the structure containing a set of Links detection callbacks
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*
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* There is no default xlink callbacks, if one want to get link
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* recognition activated, those call backs must be provided before parsing.
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*/
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typedef struct _xlinkHandler xlinkHandler;
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typedef xlinkHandler *xlinkHandlerPtr;
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struct _xlinkHandler {
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xlinkSimpleLinkFunk simple;
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xlinkExtendedLinkFunk extended;
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xlinkExtendedLinkSetFunk set;
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};
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/**
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* the default detection routine, can be overriden, they call the default
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* detection callbacks.
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*/
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xlinkNodeDetectFunc xlinkGetDefaultDetect (void);
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void xlinkSetDefaultDetect (xlinkNodeDetectFunc func);
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/**
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* Routines to set/get the default handlers.
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*/
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xlinkHandlerPtr xlinkGetDefaultHandler (void);
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void xlinkSetDefaultHandler (xlinkHandlerPtr handler);
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/*
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* Link detection module itself.
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*/
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xlinkType xlinkIsLink (xmlDocPtr doc,
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xmlNodePtr node);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __XML_XLINK_H__ */
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