Entry

TSE: Search/Replace: Regular expression: Library: Internet: Which regular expression to extract URL?

Feb 12th, 2005 07:40
Knud van Eeden,

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--- Knud van Eeden --- 20 October 2003 - 09:56 pm --------------------

TSE: Search/Replace: Regular expression: Library: Internet: Which 
regular expression to extract URL?

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 *{www\.}|{{http}{s}?\:\/\/{www\.}?}[A-Za-z0-9_\-.]#\.[A-Za-z0-9_\-./
\~?&=:+#/%,()]#\c

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and using the 'x' search option
will extract most URLs.

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Note:
the above characters should be all on 1 line, and you will have to use
the option 'ix'


(Note : Also include the first space in the beginning of the line, in
the expression above)

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For example, it will extract and highlight any of the following URLs.

Note: the URL has to be on 1 line, so you will have to wrap them.

http://condor.admin.ccny.cuny.edu/~iy4533/

http://www.engin.umich.edu/~problemsolving/closed/unstuck/unstuck.htm

http://www.photonics.ru/eng/sazhnikov/Models.htm

http://216.239.59.104/search?
q=cache:ZjGFHZFXgW4J:www.photonics.ru/eng/sazhnikov/Thinking.htm+what+i
s+working+backwards+problem+solving+method&hl=en&ie=UTF-8

http://www.engr.mun.ca/~cdaley/1000/Design.html

http://216.239.59.104/search?
q=cache:tPA2BA5paIwJ:isg.cs.tcd.ie/giangt/Tut_9.pdf+what+is+working+bac
kwards+problem+solving+method&hl=en&ie=UTF-8

http://www.it.bton.ac.uk/staff/rng/teaching/notes/ProbSolvMethods.html#
Anderson

www.engin.umich.edu/~problemsolving/closed/unstuck/unstuck.htm

www.photonics.ru/eng/sazhnikov/Models.htm

http://216.239.59.104/search?
q=cache:ZjGFHZFXgW4J:www.photonics.ru/eng/sazhnikov/Thinking.htm+what+i
s+working+backwards+problem+solving+method&hl=en&ie=UTF-8

www.engr.mun.ca/~cdaley/1000/Design.html

http://216.239.59.104/search?
q=cache:tPA2BA5paIwJ:isg.cs.tcd.ie/giangt/Tut_9.pdf+what+is+working+bac
kwards+problem+solving+method&hl=en&ie=UTF-8

www.it.bton.ac.uk/staff/rng/teaching/notes/ProbSolvMethods.html#Anderso
n

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Note:

Hereby the Backus Naur diagram used to create the above regular 
expression:

  +--------<------+
  |               |
 -+->--[space]-->-+->-+
  |               |   |
  +-------->------+   |
                      |
                      |
                      |
++---------<----------+
||
||
||
||          +----->-----+           +--------->--------+
||          |           |           |                  |
|+->-[http]-+->--[s]-->-+->-[://]->-+->-[www]->-[.]-->-+->-+
|                                                          |
|                                                          |
|                                                          +-->--+
|                                                          |     |
|                                                          |     |
+-->------------------------------------[www]->-[.]-->-----+     |
                                                                 |
                                                                 |
                                                                 |
+----------------------------------------------------------------+
|
|
|
|
|   +-------------<------+          +-------------<---------------+
|   |                    |          |                             |
+->-+->-[A-Za-z0-9_-.]->-+->-[.]->--+->-[A-Za-z0-9_-./~?&=:+#\]->-+->-

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Internet: see also:

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TSE: Search/Replace: Regular expression: Link: Can you give overview 
links regular expressions?
http://www.faqts.com/knowledge_base/view.phtml/aid/31433/fid/865

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