Is it not against the XML standard to have a quoted string containing "<" or ">" in a tag?
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David Beahm Sent: Wednesday, September 15, 2004 4:04 PM To: [EMAIL PROTECTED] Subject: Re: [U2] [UV] Processing a string Will- Wouldn't that cause a problem if there are quoted strings containing < or > characters? That's why I went character by character in my XML routine. As someone else pointed out, handling truly large strings efficiently usually comes down to not loading the entire thing into memory at once. The underlying string routines are quite efficient, but everything suffers if memory gets too crowded and the system starts swapping. Best, David Beahm [EMAIL PROTECTED] wrote: > "I've got a subroutine that takes an XML string and tries to convert it > into a dynamic array. It does it byte by byte, and I'm just looking for > a faster way to parse the XML." > > Nick, someone already alluded to this but you can probably make it faster by extracting information FIELD by FIELD instead of char by char. XML is a delimited language, delimited by <tag> whatever "tag" might be. > > So you do an INDEX on "<" and it returns the char position where the "<" is. You can then INDEX on ">" and it returns the char position where the ">" is. Now you know what the tag starts and stops. > > *C.DELIM is a counter to how many delims I've already run through > START.POS = INDEX(mystring,"<",C.DELIM) > STOP.POS = INDEX(mystring,">",C.DELIM) > THIS.TAG = mystring[START.POS+1,STOP.POS-START.POS-1] > > You can do a similiar thing to find the fields of data between the tags. Using index and sub-string extraction should be faster than extracting and testing every single char. > > Will Johnson > Fast Forward ------- u2-users mailing list [EMAIL PROTECTED] To unsubscribe please visit http://listserver.u2ug.org/ ------- u2-users mailing list [EMAIL PROTECTED] To unsubscribe please visit http://listserver.u2ug.org/
