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Diffstat (limited to 'plugins/Variables/libxml/xlink.h')
| -rw-r--r-- | plugins/Variables/libxml/xlink.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/plugins/Variables/libxml/xlink.h b/plugins/Variables/libxml/xlink.h new file mode 100644 index 0000000000..c7f48c8539 --- /dev/null +++ b/plugins/Variables/libxml/xlink.h @@ -0,0 +1,180 @@ +/* + * xlink.h : interfaces to the hyperlinks detection module + * + * See Copyright for the status of this software. + * + * Related specification: http://www.w3.org/TR/xlink + * http://www.w3.org/HTML/ + * and XBase + * + * daniel@veillard.com + */ + +#ifndef __XML_XLINK_H__ +#define __XML_XLINK_H__ + +#include <libxml/tree.h> + +#ifdef __cplusplus +extern "C" { +#endif +/** + * Various defines for the various Link properties. + * + * NOTE: the link detection layer will try to resolve QName expansion + * of namespaces. If "foo" is the prefix for "http://foo.com/" + * then the link detection layer will expand role="foo:myrole" + * to "http://foo.com/:myrole". + * NOTE: the link detection layer will expand URI-Refences found on + * href attributes by using the base mechanism if found. + */ +typedef xmlChar *xlinkHRef; +typedef xmlChar *xlinkRole; +typedef xmlChar *xlinkTitle; + +typedef enum { + XLINK_TYPE_NONE = 0, + XLINK_TYPE_SIMPLE, + XLINK_TYPE_EXTENDED, + XLINK_TYPE_EXTENDED_SET +} xlinkType; + +typedef enum { + XLINK_SHOW_NONE = 0, + XLINK_SHOW_NEW, + XLINK_SHOW_EMBED, + XLINK_SHOW_REPLACE +} xlinkShow; + +typedef enum { + XLINK_ACTUATE_NONE = 0, + XLINK_ACTUATE_AUTO, + XLINK_ACTUATE_ONREQUEST +} xlinkActuate; + +/** + * xlinkNodeDetectFunc: + * @ctx: user data pointer + * @node: the node to check + * + * This is the prototype for the link detection routine. + * It calls the default link detection callbacks upon link detection. + */ +typedef void (*xlinkNodeDetectFunc) (void *ctx, xmlNodePtr node); + +/** + * The link detection module interact with the upper layers using + * a set of callback registered at parsing time. + */ + +/** + * xlinkSimpleLinkFunk: + * @ctx: user data pointer + * @node: the node carrying the link + * @href: the target of the link + * @role: the role string + * @title: the link title + * + * This is the prototype for a simple link detection callback. + */ +typedef void +(*xlinkSimpleLinkFunk) (void *ctx, + xmlNodePtr node, + const xlinkHRef href, + const xlinkRole role, + const xlinkTitle title); + +/** + * xlinkExtendedLinkFunk: + * @ctx: user data pointer + * @node: the node carrying the link + * @nbLocators: the number of locators detected on the link + * @hrefs: pointer to the array of locator hrefs + * @roles: pointer to the array of locator roles + * @nbArcs: the number of arcs detected on the link + * @from: pointer to the array of source roles found on the arcs + * @to: pointer to the array of target roles found on the arcs + * @show: array of values for the show attributes found on the arcs + * @actuate: array of values for the actuate attributes found on the arcs + * @nbTitles: the number of titles detected on the link + * @title: array of titles detected on the link + * @langs: array of xml:lang values for the titles + * + * This is the prototype for a extended link detection callback. + */ +typedef void +(*xlinkExtendedLinkFunk)(void *ctx, + xmlNodePtr node, + int nbLocators, + const xlinkHRef *hrefs, + const xlinkRole *roles, + int nbArcs, + const xlinkRole *from, + const xlinkRole *to, + xlinkShow *show, + xlinkActuate *actuate, + int nbTitles, + const xlinkTitle *titles, + const xmlChar **langs); + +/** + * xlinkExtendedLinkSetFunk: + * @ctx: user data pointer + * @node: the node carrying the link + * @nbLocators: the number of locators detected on the link + * @hrefs: pointer to the array of locator hrefs + * @roles: pointer to the array of locator roles + * @nbTitles: the number of titles detected on the link + * @title: array of titles detected on the link + * @langs: array of xml:lang values for the titles + * + * This is the prototype for a extended link set detection callback. + */ +typedef void +(*xlinkExtendedLinkSetFunk) (void *ctx, + xmlNodePtr node, + int nbLocators, + const xlinkHRef *hrefs, + const xlinkRole *roles, + int nbTitles, + const xlinkTitle *titles, + const xmlChar **langs); + +/** + * This is the structure containing a set of Links detection callbacks. + * + * There is no default xlink callbacks, if one want to get link + * recognition activated, those call backs must be provided before parsing. + */ +typedef struct _xlinkHandler xlinkHandler; +typedef xlinkHandler *xlinkHandlerPtr; +struct _xlinkHandler { + xlinkSimpleLinkFunk simple; + xlinkExtendedLinkFunk extended; + xlinkExtendedLinkSetFunk set; +}; + +/* + * The default detection routine, can be overridden, they call the default + * detection callbacks. + */ + +xlinkNodeDetectFunc xlinkGetDefaultDetect (void); +void xlinkSetDefaultDetect (xlinkNodeDetectFunc func); + +/* + * Routines to set/get the default handlers. + */ +xlinkHandlerPtr xlinkGetDefaultHandler (void); +void xlinkSetDefaultHandler (xlinkHandlerPtr handler); + +/* + * Link detection module itself. + */ +xlinkType xlinkIsLink (xmlDocPtr doc, + xmlNodePtr node); + +#ifdef __cplusplus +} +#endif +#endif /* __XML_XLINK_H__ */ |