Execute Multiple Regex / What is the operator ?

[gcomm]

I have the source of a webpage;

I would like to execute multiple regex on this page

> pull specific url(s)
> get h1 tags
> get image tags
etc.

How do I format the regex line to get all these seperate regex in one loop. ? What is the operator to facilitate this ?


{-RegExp.RegExp-|-source of webpage-|-regex 1 (operator?) regex 2 (operator?) regex 3 (operator?) etc-|-all-}

 

[bigcajones]

http://introcs.cs.princeton.edu/java/72regular/

and

http://stackoverflow.com/questions/469913/regular-expressions-is-there-an-and-operator

Don't know if that's what you are looking for. You could just break them down into individual steps.

 

[gcomm]

I'm thinking this is the operator

{DO THIS REGEX} && {DO THIS REGEX} && {DO THIS REGEX} && {DO THIS REGEX} && {DO THIS REGEX}

> TAKE RESULTS > APPEND TO A FILE



MODS ?

 

[gcomm]

*bumpt

 

[Stereomike]

If you could &&-combine regexp, it would give less results:

yellow cat
yellow dog
green cat
green dog

regexp *.green:
green dog
green cat

regexp *.green && *.dog:
green dog

|| would lead to more results:
regexp *.green || *.dog:
yellow dog
green dog
green cat

_but_ this would lead to a totally messed up file, everything you searched for in one file without possibility to determine what is what.

A better way is doing this in several passes (on whole page). Or if it's something like ebay, look (regexp) for repeating sections (e.g. one paragraph per offer) and have this momentary section in a branch. Then take this branch and watch closer for specific stuff like your h1 tags, price etc. Take all derived data from that section and save in a single |- delimited line and go for the next paragraph. That's how I do it for really complex stuff (and lots of it).