Re: [xslt] please help. problem with output buffers

[robert <robert xsl 00008 org>]

 >int xml_output_write_callback(void * context, const char *buffer, int len) {
 >	char tmp[5000];
 >
 >/* 	printf("xml output write callback\n"); */
 >/* 	printf("len:%d\n", len); */
 >	if (len > 0) {
 >		snprintf(tmp, len + 1, "%s", buffer);
 >		tmp[len] = '\0';
 >		//printf("%s", tmp);
 >		return(len);
 >	}
 >	return(0);
 >}

Your callback received 3 arguments:
- context: this should be a pointer to your buffer (!)
- buffer : this contains the data which is to be written (into your buffer)
- length : length of new data

 >    if (res != NULL) {
 >		buf = xmlOutputBufferCreateIO(xml_output_write_callback,
 >		xml_output_close_callback, NULL, NULL);

Try using this:

xmlOutputBufferPtr	buf;
char            	context[5000];	// this is your buffer!

buf = xmlOutputBufferCreateIO(xmlIOWrite, xmlIOClose, context, NULL);
if (buf == NULL)
{
	// error occurred
}
if (xsltSaveResultTo(buf, res, cur) == -1)
{
	// error occurred
}
xmlOutputBufferClose(buf);
printf("MY BUFFER: '%s'\n", context);

In your callback, you should cast the context to a char pointer:
char	*my_buffer = (char *) context;

And add stuff to the end of it.

                                                                        robert