mirror of
https://github.com/reactos/reactos.git
synced 2024-11-19 13:33:42 +00:00
183 lines
4.5 KiB
C
183 lines
4.5 KiB
C
/*
|
|
* xlink.c : implementation of the hyperlinks detection module
|
|
* This version supports both XML XLinks and HTML simple links
|
|
*
|
|
* See Copyright for the status of this software.
|
|
*
|
|
* daniel@veillard.com
|
|
*/
|
|
|
|
|
|
#define IN_LIBXML
|
|
#include "libxml.h"
|
|
|
|
#ifdef LIBXML_XPTR_ENABLED
|
|
#include <string.h> /* for memset() only */
|
|
#ifdef HAVE_CTYPE_H
|
|
#include <ctype.h>
|
|
#endif
|
|
#ifdef HAVE_STDLIB_H
|
|
#include <stdlib.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_STAT_H
|
|
#include <sys/stat.h>
|
|
#endif
|
|
#ifdef HAVE_FCNTL_H
|
|
#include <fcntl.h>
|
|
#endif
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#ifdef HAVE_ZLIB_H
|
|
#include <zlib.h>
|
|
#endif
|
|
|
|
#include <libxml/xmlmemory.h>
|
|
#include <libxml/tree.h>
|
|
#include <libxml/parser.h>
|
|
#include <libxml/valid.h>
|
|
#include <libxml/xlink.h>
|
|
#include <libxml/globals.h>
|
|
|
|
#define XLINK_NAMESPACE (BAD_CAST "http://www.w3.org/1999/xlink/namespace/")
|
|
#define XHTML_NAMESPACE (BAD_CAST "http://www.w3.org/1999/xhtml/")
|
|
|
|
/****************************************************************
|
|
* *
|
|
* Default setting and related functions *
|
|
* *
|
|
****************************************************************/
|
|
|
|
static xlinkHandlerPtr xlinkDefaultHandler = NULL;
|
|
static xlinkNodeDetectFunc xlinkDefaultDetect = NULL;
|
|
|
|
/**
|
|
* xlinkGetDefaultHandler:
|
|
*
|
|
* Get the default xlink handler.
|
|
*
|
|
* Returns the current xlinkHandlerPtr value.
|
|
*/
|
|
xlinkHandlerPtr
|
|
xlinkGetDefaultHandler(void) {
|
|
return(xlinkDefaultHandler);
|
|
}
|
|
|
|
|
|
/**
|
|
* xlinkSetDefaultHandler:
|
|
* @handler: the new value for the xlink handler block
|
|
*
|
|
* Set the default xlink handlers
|
|
*/
|
|
void
|
|
xlinkSetDefaultHandler(xlinkHandlerPtr handler) {
|
|
xlinkDefaultHandler = handler;
|
|
}
|
|
|
|
/**
|
|
* xlinkGetDefaultDetect:
|
|
*
|
|
* Get the default xlink detection routine
|
|
*
|
|
* Returns the current function or NULL;
|
|
*/
|
|
xlinkNodeDetectFunc
|
|
xlinkGetDefaultDetect (void) {
|
|
return(xlinkDefaultDetect);
|
|
}
|
|
|
|
/**
|
|
* xlinkSetDefaultDetect:
|
|
* @func: pointer to the new detection routine.
|
|
*
|
|
* Set the default xlink detection routine
|
|
*/
|
|
void
|
|
xlinkSetDefaultDetect (xlinkNodeDetectFunc func) {
|
|
xlinkDefaultDetect = func;
|
|
}
|
|
|
|
/****************************************************************
|
|
* *
|
|
* The detection routines *
|
|
* *
|
|
****************************************************************/
|
|
|
|
|
|
/**
|
|
* xlinkIsLink:
|
|
* @doc: the document containing the node
|
|
* @node: the node pointer itself
|
|
*
|
|
* Check whether the given node carries the attributes needed
|
|
* to be a link element (or is one of the linking elements issued
|
|
* from the (X)HTML DtDs).
|
|
* This routine don't try to do full checking of the link validity
|
|
* but tries to detect and return the appropriate link type.
|
|
*
|
|
* Returns the xlinkType of the node (XLINK_TYPE_NONE if there is no
|
|
* link detected.
|
|
*/
|
|
xlinkType
|
|
xlinkIsLink (xmlDocPtr doc, xmlNodePtr node) {
|
|
xmlChar *type = NULL, *role = NULL;
|
|
xlinkType ret = XLINK_TYPE_NONE;
|
|
|
|
if (node == NULL) return(XLINK_TYPE_NONE);
|
|
if (doc == NULL) doc = node->doc;
|
|
if ((doc != NULL) && (doc->type == XML_HTML_DOCUMENT_NODE)) {
|
|
/*
|
|
* This is an HTML document.
|
|
*/
|
|
} else if ((node->ns != NULL) &&
|
|
(xmlStrEqual(node->ns->href, XHTML_NAMESPACE))) {
|
|
/*
|
|
* !!!! We really need an IS_XHTML_ELEMENT function from HTMLtree.h @@@
|
|
*/
|
|
/*
|
|
* This is an XHTML element within an XML document
|
|
* Check whether it's one of the element able to carry links
|
|
* and in that case if it holds the attributes.
|
|
*/
|
|
}
|
|
|
|
/*
|
|
* We don't prevent a-priori having XML Linking constructs on
|
|
* XHTML elements
|
|
*/
|
|
type = xmlGetNsProp(node, BAD_CAST"type", XLINK_NAMESPACE);
|
|
if (type != NULL) {
|
|
if (xmlStrEqual(type, BAD_CAST "simple")) {
|
|
ret = XLINK_TYPE_SIMPLE;
|
|
} if (xmlStrEqual(type, BAD_CAST "extended")) {
|
|
role = xmlGetNsProp(node, BAD_CAST "role", XLINK_NAMESPACE);
|
|
if (role != NULL) {
|
|
xmlNsPtr xlink;
|
|
xlink = xmlSearchNs(doc, node, XLINK_NAMESPACE);
|
|
if (xlink == NULL) {
|
|
/* Humm, fallback method */
|
|
if (xmlStrEqual(role, BAD_CAST"xlink:external-linkset"))
|
|
ret = XLINK_TYPE_EXTENDED_SET;
|
|
} else {
|
|
xmlChar buf[200];
|
|
snprintf((char *) buf, sizeof(buf), "%s:external-linkset",
|
|
(char *) xlink->prefix);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
if (xmlStrEqual(role, buf))
|
|
ret = XLINK_TYPE_EXTENDED_SET;
|
|
|
|
}
|
|
|
|
}
|
|
ret = XLINK_TYPE_EXTENDED;
|
|
}
|
|
}
|
|
|
|
if (type != NULL) xmlFree(type);
|
|
if (role != NULL) xmlFree(role);
|
|
return(ret);
|
|
}
|
|
#endif /* LIBXML_XPTR_ENABLED */
|
|
#define bottom_xlink
|
|
#include "elfgcchack.h"
|