Tickets :: Comment on [#10949] RFC822 parsing library very inefficient

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Comment	> Changes have been made in Git (refs/heads/master): > > commit 90462df31f5ec31200a1ed9144f6569e3a203d33 > Author: Michael M Slusarz <slusarz@horde.org> > Date: Sun Jan 29 21:04:06 2012 -0700 > > [mms] Improved parser for e-mail addresses (Request #10949). > > The previous parsing method involved splitting at "important" RFC 822 > characters (e.g. < . :) and then brute-forcing to see if this was the > correct decision. New code goes through the string linearly, checking > the grammar against the ABNF contained in the RFC. > > Performance statistics: On a message with 50 e-mail addresses, > performance was 20x faster. Within the script itself, total cumulative > time within the parseAddressList() method went from 92% -> 7%. > > Real performance numbers are probably not quite this great. The new > library substnatially reduces recursion. Methods relying on recursion > are artifically slowed down by xdebug since each function call has a > more significant performance penalty than under regular PHP since > xdebug needs to record data about each call. Even factoring this in, > the new code is a substantial performance improvement - for messages > containing substantial numbers of e-mail addresses (> 30), the limiting > bottleneck was previously Rfc822 address parsing. This should no longer > be the case. > > framework/Mail/lib/Horde/Mail/Rfc822.php \| 1026 > +++++++++------------- > framework/Mail/lib/Horde/Mail/Rfc822/Address.php \| 74 ++ > framework/Mail/lib/Horde/Mail/Rfc822/Group.php \| 40 + > framework/Mail/package.xml \| 24 +- > framework/Mail/test/Horde/Mail/ParseTest.php \| 59 +- > 5 files changed, 601 insertions(+), 622 deletions(-) > > http://git.horde.org/horde-git/-/commit/90462df31f5ec31200a1ed9144f6569e3a203d33
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