/**
* Serialises an xmlNode to a string
*
* @param log Log context
* @param node Input XML node to be serialised
*
* @return Returns a pointer to a new buffer containing the serialised data. This buffer must be freed
* after usage
*/
char *xmlNodeToString(LogContext *log, xmlNode *node) {
xmlBuffer *buf = NULL;
xmlSaveCtxt *serctx = NULL;
char *ret = NULL;
if( node == NULL ) {
writelog(log, LOG_ALERT, "xmlNodeToString: Input data is NULL");
return NULL;
}
buf = xmlBufferCreate();
assert( buf != NULL );
serctx = xmlSaveToBuffer(buf, "UTF-8", XML_SAVE_NO_EMPTY|XML_SAVE_NO_DECL);
assert( serctx != NULL );
if( xmlSaveTree(serctx, node) < 0 ) {
writelog(log, LOG_ALERT, "xmlNodeToString: Failed to serialise xmlNode");
return NULL;
}
xmlSaveClose(serctx);
ret = strdup_nullsafe((char *) xmlBufferContent(buf));
xmlBufferFree(buf);
return ret;
}
int main(int argc, char * argv[])
{
xmlNodePtr sentence;
gchar ** tokens;
GString * linebuffer = g_string_new("");
GIOChannel * in = g_io_channel_unix_new(fileno(stdin));
//首先读取一行文字
g_io_channel_read_line_string(in,linebuffer,NULL,NULL);
//分割
tokens = g_strsplit_set(linebuffer->str," ",1024);
//为此行文字打标记
init_yylex(tokens);
//打好词性标记后开始解析语法结构
xmlInitGlobals();
xmlInitMemory();
yyparse(&sentence);
xmlCleanupGlobals();
xmlCleanupMemory();
xmlSaveCtxtPtr saver = xmlSaveToFd(2,"UTF-8",0);
xmlSaveTree(saver,sentence);
xmlSaveFlush(saver);
xmlSaveClose(saver);
write(2,"\n",1);
//输出语法树， 以 XML 形式
return 0;
}
int xmlSaveNode(void *node, void *encoding, int options) {
xmlSaveCtxtPtr savectx;
const char *c_encoding = (char*)encoding;
savectx = xmlSaveToIO(
(xmlOutputWriteCallback)xml_write_callback,
(xmlOutputCloseCallback)close_callback,
NULL,
encoding,
options
);
xmlSaveTree(savectx, (xmlNode*)node);
return xmlSaveClose(savectx);
}
// -------------------------------------------------------------
const char* Webpage::getNodeAsString(string exp)
{
xmlXPathObjectPtr obj = xpath(exp);
xmlNodeSetPtr nodeset = obj->nodesetval;
if(nodeset && nodeset->nodeNr>0)
{
xmlBufferPtr buf = xmlBufferCreate();
xmlSaveCtxtPtr savectx = xmlSaveToBuffer(buf, 0, XML_SAVE_FORMAT);
xmlNodePtr node = nodeset->nodeTab[0];
if (savectx)
{
xmlSaveTree(savectx, node);
xmlSaveClose(savectx);
}
return (const char*)xmlBufferContent(buf);
}
else
{
cout << "no node found" << endl;
return "";
}
}
