AlecSadler

using regex to replace a string

3 posts in this topic

#1 ·  Posted

Hello all I am still working on my instant messenger project and I have came across a nasty bug.

When too many messages are placed in a conversation it slows my program way down, so I'm trying to trim old messages off the conversation text.

I am trying to do this with regular expressions, however I'm having no luck so far.

Here is what I'm trying (want to replace everything except "Some text to keep" with a blank string ""

$msg = "<div style='float: left;width: 90%;border: 3px solid #11AAFF;padding: 10px;text-align:left;margin-bottom:10px;' > STORM: Hello World<br/></div><div style='float: left;margin-top:-8px;margin-bottom:5px;width:100%;font-size: 8px;'>2017-16-07 21:08:21</div>"
$msg &= "Some text to keep"
$msg = StringRegExpReplace($msg, '<div([^%]*?)<br\/><\/div><div([^%]*?)<\/div>', "", 1)
ConsoleWrite($msg&@CRLF)

 

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#2 ·  Posted

I got it figured out.

Am using the following pattern "(?i)<div(.*?)</div>(.*?)</div>"

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#3 ·  Posted

Simpler:

$msg = "<div style='float: left;width: 90%;border: 3px solid #11AAFF;padding: 10px;text-align:left;margin-bottom:10px;' > STORM: Hello World<br/></div><div style='float: left;margin-top:-8px;margin-bottom:5px;width:100%;font-size: 8px;'>2017-16-07 21:08:21</div>"
$msg &= "Some text to keep"
$msg = StringRegExpReplace($msg, '.*</div>', "")
ConsoleWrite($msg&@CRLF)

 


This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

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