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Home: Perl Programming Help: Beginner: Getting values in the middle of the line

Zisu Novice Jul 17, 2002, 11:13 PM Post #1 of 14 (5435 views) Getting values in the middle of the line Can't Post The problem: I have directory names, that I should use to make html documentations (a lot of dirs). All dirs have similar construct: MSB-BLA_BLA_BLA-at-DATE_TIME-set(id)_(value)_(index) where the one marked in (id) can be 0 or 5 or 2U and other two () are numbers (\D+). I want to get the first one to a variable and two last values as numbers (so i can use them as index in arrays) into variables, how do I manage this? - Just another beginner -

Jean User Jul 18, 2002, 12:14 AM Post #2 of 14 (5433 views) Re: [Zisu] Getting values in the middle of the line [In reply to] Can't Post Try this: [perl]my ($res1, $idx1, $idx2); ($res1, $idx1, $idx2) = $str =~ /MSB-.+?-at-.+?-set(\([025][Uu]?\))_(\(\d+\))_(\(\d+\))/; print "$res1 -- $idx1 -- $idx2\n"; [/perl] Jean Spector SQA Engineer @ Exanet jean.spector@softhome.net There are only 10 types of people in the world - Those who understand binary, and those who don't. (This post was edited by Jean on Jul 18, 2002, 12:15 AM)

Paul Enthusiast Jul 22, 2002, 3:31 AM Post #3 of 14 (5421 views) Re: [Jean] Getting values in the middle of the line [In reply to] Can't Post You could change .+? to \w+ which would be a little nicer and more accurate. (This post was edited by RedRum on Jul 22, 2002, 3:32 AM)

Jean User Jul 22, 2002, 3:43 AM Post #4 of 14 (5416 views) Re: [RedRum] Getting values in the middle of the line [In reply to] Can't Post It depends on the contents of the BLA_BLA Dir names could include something other than \w+... Jean Spector SQA Engineer @ Exanet jean.spector@softhome.net There are only 10 types of people in the world - Those who understand binary, and those who don't. (This post was edited by Jean on Jul 22, 2002, 3:44 AM)

Paul Enthusiast Jul 22, 2002, 3:58 AM Post #5 of 14 (5413 views) Re: [Jean] Getting values in the middle of the line [In reply to] Can't Post Oops yeah sorry, I took BLAH_BLAH and DATE_TIME as literal

Jean User Jul 22, 2002, 4:07 AM Post #6 of 14 (5411 views) Re: [RedRum] Getting values in the middle of the line [In reply to] Can't Post I guess it's all right - IMHO for thousands of helpful posts you can miss something that wasn't very obvious Jean Spector SQA Engineer @ Exanet jean.spector@softhome.net There are only 10 types of people in the world - Those who understand binary, and those who don't.

Zisu Novice Jul 23, 2002, 7:57 AM Post #7 of 14 (5404 views) Re: [Jean] Getting values in the middle of the line [In reply to] Can't Post Got it to work. Thank you for the help - Just another beginner -

Jean User Jul 23, 2002, 8:12 AM Post #8 of 14 (5403 views) Re: [Zisu] Getting values in the middle of the line [In reply to] Can't Post Anytime Jean Spector SQA Engineer @ Exanet jean.spector@softhome.net There are only 10 types of people in the world - Those who understand binary, and those who don't.

Zisu Novice Jul 25, 2002, 2:22 AM Post #9 of 14 (5397 views) Re: [Jean] Getting values in the middle of the line [In reply to] Can't Post I want to change line: <A HREF="./link.html" TARGET=_top>Thursday, July 11, 2002, 09:27:57</A> and +.? doesnt work as I expected. $header = $linea =~ s/>.+?</>Something else</; How would you change the line to be: <A HREF="./link.html" TARGET=_top>Something else</A> ? - Just another beginner -

Jean User Jul 25, 2002, 3:08 AM Post #10 of 14 (5395 views) Re: [Zisu] Getting values in the middle of the line [In reply to] Can't Post Actually you code works fine - you've just added redundant variable... $linea =~ s/>.+?</>Something else</; should work fine (with updated contents stored in the $linea) Moreover - in your case you can even omit the ? in the regular expression: $linea =~ s/>.+</>Something else</; The ? is importany only if you have more than one < in your string... Jean Spector SQA Engineer @ Exanet jean.spector@softhome.net There are only 10 types of people in the world - Those who understand binary, and those who don't. (This post was edited by Jean on Jul 25, 2002, 3:12 AM)

Paul Enthusiast Jul 25, 2002, 3:11 AM Post #11 of 14 (5392 views) Re: [Jean] Getting values in the middle of the line [In reply to] Can't Post >> .+? << I believe: [^<]+ ...would be quicker as it doesn't have to read ahead.

Jean User Jul 25, 2002, 3:18 AM Post #12 of 14 (5390 views) Re: [RedRum] Getting values in the middle of the line [In reply to] Can't Post As long as performance is an issue - and it usually is , the [^<] is definitely a better choice here Jean Spector SQA Engineer @ Exanet jean.spector@softhome.net There are only 10 types of people in the world - Those who understand binary, and those who don't.

Zisu Novice Jul 25, 2002, 3:51 AM Post #13 of 14 (5387 views) Re: [Jean] Getting values in the middle of the line [In reply to] Can't Post Im working outside from web. I simulate (at work) with a tool that can generate crappy webpages (tens of folders with tens of files in them per simulation). Im working on a script that would correct them. So the speed isnt the essence. Nevertheless: I dont understand the use of [^<]+ Can someone put it to right place of the code and explain a bit? - Just another beginner -

Jean User Jul 25, 2002, 4:05 AM Post #14 of 14 (5384 views) Re: [Zisu] Getting values in the middle of the line [In reply to] Can't Post Additiona warning - not a professional explanation [ ] - is a block that may include any number of characters and may be substituted for one character in the match e.g. as /abc.efg/ matches 'abcdefg', so /abc[dV]efg/ matches 'abcdefg' and 'abcVefg' ^ - in case it appears as the first character inside [] means the opposite e.g. /abc[^V]efg/ matches 'abcdefg' and any other 'abc.efg' except 'abcVefg' Thus, [^<]+ will match all the charactes until it meets the <... Hope it's not too misleading In general, both solutions will work for you - it's just better to know your options Jean Spector SQA Engineer @ Exanet jean.spector@softhome.net There are only 10 types of people in the world - Those who understand binary, and those who don't. (This post was edited by Jean on Jul 25, 2002, 4:06 AM)

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