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in reply to Re: Split on regex, don't match partial regex
in thread Split on regex, don't match partial regex

hi thanks for the response, the data arrives as a long urlencoded string from an HTTP request to the YouTube gdata API. I've already decoded it

Your code works, however the quality=large at the end could be quality=small quality=medium etc so I can't use that in the regex. I suppose I just need to match a pattern which is

itag=\d{1:2}&url={any number of chars until next itag=\d{1:2}&url= pattern}

There's also a comma separating the itag url pairs

I hope that makes sense!

Replies are listed 'Best First'.
Re^3: Split on regex, don't match partial regex
by 2teez (Vicar) on Sep 28, 2012 at 09:02 UTC
    however the quality=large at the end could be quality=small quality=medium etc so I can't use that in the regex

    Use this then, it works I believe: 
    ...
if ( my @arr = ($line) =~ m/itag=(.+?)&url=(.+?=.+?)(?=,itag.+?)/ig ) 
+{
    print join "\n" => @arr;
}
...

    [download]
    OR 
    use warnings;
use strict;

while (<DATA>) {
    chomp;
    if ( my @arr = /itag=(.+?)&url=(.+?=.+?)(?=,itag.+?)/ig ) {
        print join "\n" => @arr;
    }
}

__DATA__
itag=44&url=http://o-o---preferred---sn-u5a3u5a3-h5oe---v13---lscache3
+.c.youtube.com/videoplayback?upn=8kbZJLkF5PA&sparams=cp%2Cid%2Cip%2Ci
+pbits%2Citag%2Cratebypass%2Csource%2Cupn%2Cexpire&fexp=927101%2C92300
+6%2C922401%2C920704%2C912806%2C913419%2C913546%2C913556%2C919349%2C91
+9351%2C925109%2C919003%2C920201%2C912706&key=yt1&expire=1348823962&it
+ag=44&ipbits=8&sver=3&ratebypass=yes&mt=1348800611&ip=92.22.37.231&mv
+=m&source=youtube&ms=au&cp=U0hTTVhNUV9LTENOM19QR1VKOkFyQWNVSVFNbmNL&i
+d=1100a4b92b939cd6&type=video/webm;+codecs="vp8.0,+vorbis"&fallback_h
+ost=tc.v13.cache3.c.youtube.com&sig=8353F6329CDA8168C4F7F29E20F2AE3F6
+509D85F.C582D63C02534232CE8E28D5ADC5B119AAEF2963&quality=large,itag=3
+5&url=http://o-o---preferred---sn-u5a3u5a3-h5oe---v11---lscache4.c.yo
+utube.com/videoplayback?upn=8kbZJLkF5PA&sparams=algorithm%2Cburst%2Cc
+p%2Cfactor%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2Cexpire&fexp=927
+101%2C923006%2C922401%2C920704%2C912806%2C913419%2C913546%2C913556%2C
+919349%2C919351%2C925109%2C919003%2C920201%2C912706&expire=1348823962
+&algorithm=throttle-factor&burst=40&ip=92.22.37.231&itag=35&sver=3&ke
+y=yt1&mt=1348800611&mv=m&source=youtube&ms=au&ipbits=8&factor=1.25&cp
+=U0hTTVhNUV9LTENOM19QR1VKOkFyQWNVSVFNbmNL&id=1100a4b92b939cd6&type=vi
+deo/x-flv&fallback_host=tc.v11.cache4.c.youtube.com&sig=885C9C098DF9D
+80E780177E01CF944BC4F9564FE.9A374618A2BE8C2E562C8622DCB449A7071E37BD&
+quality=large,itag=104&url=http://o-o---preferred---sn-u5a3u5a3-h5oe-
+--v13---lscache3.c.youtube.com/videoplayback?upn=8kbZJLkF5PA&sparams=
+cp%2Cid%2Cip%2Cipbits%2Citag%2Cratebypass%2Csource%2Cupn%2Cexpire&fex
+p=927101%2C923006%2C922401%2C920704%2C912806%2C913419%2C913546%2C9135
+56%2C919349%2C919351%2C925109%2C919003%2C920201%2C912706&key=yt1&expi
+re=1348823962&itag=44&ipbits=8&sver=3&ratebypass=yes&mt=1348800611&ip
+=92.22.37.231&mv=m&source=youtube&ms=au&cp=U0hTTVhNUV9LTENOM19QR1VKOk
+FyQWNVSVFNbmNL&id=1100a4b92b939cd6&type=video/webm;+codecs="vp8.0,+vo
+rbis"&fallback_host=tc.v13.cache3.c.youtube.com&sig=8353F6329CDA8168C
+4F7F29E20F2AE3F6509D85F.C582D63C02534232CE8E28D5ADC5B119AAEF2963&qual
+ity=small,itag=15&url=http://o-o---preferred---sn-u5a3u5a3-h5oe---v11
+---lscache4.c.youtube.com/videoplayback?upn=8kbZJLkF5PA&sparams=algor
+ithm%2Cburst%2Ccp%2Cfactor%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2
+Cexpire&fexp=927101%2C923006%2C922401%2C920704%2C912806%2C913419%2C91
+3546%2C913556%2C919349%2C919351%2C925109%2C919003%2C920201%2C912706&e
+xpire=1348823962&algorithm=throttle-factor&burst=40&ip=92.22.37.231&i
+tag=35&sver=3&key=yt1&mt=1348800611&mv=m&source=youtube&ms=au&ipbits=
+8&factor=1.25&cp=U0hTTVhNUV9LTENOM19QR1VKOkFyQWNVSVFNbmNL&id=1100a4b9
+2b939cd6&type=video/x-flv&fallback_host=tc.v11.cache4.c.youtube.com&s
+ig=885C9C098DF9D80E780177E01CF944BC4F9564FE.9A374618A2BE8C2E562C8622D
+CB449A7071E37BD&quality=quality=small quality=medium,itag=55&url=http
+://o-o---preferred---sn-u5a3u5a3-h5oe---v11---lscache4.c.youtube.com/
+videoplayback?upn=8kbZJLkF5PA&sparams=algorithm%2Cburst%2Ccp%2Cfactor
+%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2Cexpire&fexp=927101%2C9230
+06%2C922401%2C920704%2C912806%2C913419%2C913546%2C913556%2C919349%2C9
+19351%2C925109%2C919003%2C920201%2C912706&expire=1348823962&algorithm
+=throttle-factor&burst=40&ip=92.22.37.231&itag=35&sver=3&key=yt1&mt=1
+348800611&mv=m&source=youtube&ms=au&ipbits=8&factor=1.25&cp=U0hTTVhNU
+V9LTENOM19QR1VKOkFyQWNVSVFNbmNL&id=1100a4b92b939cd6&type=video/x-flv&
+fallback_host=tc.v11.cache4.c.youtube.com&sig=885C9C098DF9D80E780177E
+01CF944BC4F9564FE.9A374618A2BE8C2E562C8622DCB449A7071E37BD&quality=qu
+ality=small quality=medium,itag= ...AND SO ON

    [download]
    Output 
    44
http://o-o---preferred---sn-u5a3u5a3-h5oe---v13---lscache3.c.youtube.c
+om/videoplayback?upn=8kbZJLkF5PA&sparams=cp%2Cid%2Cip%2Cipbits%2Citag
+%2Cratebypass%2Csource%2Cupn%2Cexpire&fexp=927101%2C923006%2C922401%2
+C920704%2C912806%2C913419%2C913546%2C913556%2C919349%2C919351%2C92510
+9%2C919003%2C920201%2C912706&key=yt1&expire=1348823962&itag=44&ipbits
+=8&sver=3&ratebypass=yes&mt=1348800611&ip=92.22.37.231&mv=m&source=yo
+utube&ms=au&cp=U0hTTVhNUV9LTENOM19QR1VKOkFyQWNVSVFNbmNL&id=1100a4b92b
+939cd6&type=video/webm;+codecs="vp8.0,+vorbis"&fallback_host=tc.v13.c
+ache3.c.youtube.com&sig=8353F6329CDA8168C4F7F29E20F2AE3F6509D85F.C582
+D63C02534232CE8E28D5ADC5B119AAEF2963&quality=large
35
http://o-o---preferred---sn-u5a3u5a3-h5oe---v11---lscache4.c.youtube.c
+om/videoplayback?upn=8kbZJLkF5PA&sparams=algorithm%2Cburst%2Ccp%2Cfac
+tor%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2Cexpire&fexp=927101%2C9
+23006%2C922401%2C920704%2C912806%2C913419%2C913546%2C913556%2C919349%
+2C919351%2C925109%2C919003%2C920201%2C912706&expire=1348823962&algori
+thm=throttle-factor&burst=40&ip=92.22.37.231&itag=35&sver=3&key=yt1&m
+t=1348800611&mv=m&source=youtube&ms=au&ipbits=8&factor=1.25&cp=U0hTTV
+hNUV9LTENOM19QR1VKOkFyQWNVSVFNbmNL&id=1100a4b92b939cd6&type=video/x-f
+lv&fallback_host=tc.v11.cache4.c.youtube.com&sig=885C9C098DF9D80E7801
+77E01CF944BC4F9564FE.9A374618A2BE8C2E562C8622DCB449A7071E37BD&quality
+=large
104
http://o-o---preferred---sn-u5a3u5a3-h5oe---v13---lscache3.c.youtube.c
+om/videoplayback?upn=8kbZJLkF5PA&sparams=cp%2Cid%2Cip%2Cipbits%2Citag
+%2Cratebypass%2Csource%2Cupn%2Cexpire&fexp=927101%2C923006%2C922401%2
+C920704%2C912806%2C913419%2C913546%2C913556%2C919349%2C919351%2C92510
+9%2C919003%2C920201%2C912706&key=yt1&expire=1348823962&itag=44&ipbits
+=8&sver=3&ratebypass=yes&mt=1348800611&ip=92.22.37.231&mv=m&source=yo
+utube&ms=au&cp=U0hTTVhNUV9LTENOM19QR1VKOkFyQWNVSVFNbmNL&id=1100a4b92b
+939cd6&type=video/webm;+codecs="vp8.0,+vorbis"&fallback_host=tc.v13.c
+ache3.c.youtube.com&sig=8353F6329CDA8168C4F7F29E20F2AE3F6509D85F.C582
+D63C02534232CE8E28D5ADC5B119AAEF2963&quality=small
15
http://o-o---preferred---sn-u5a3u5a3-h5oe---v11---lscache4.c.youtube.c
+om/videoplayback?upn=8kbZJLkF5PA&sparams=algorithm%2Cburst%2Ccp%2Cfac
+tor%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2Cexpire&fexp=927101%2C9
+23006%2C922401%2C920704%2C912806%2C913419%2C913546%2C913556%2C919349%
+2C919351%2C925109%2C919003%2C920201%2C912706&expire=1348823962&algori
+thm=throttle-factor&burst=40&ip=92.22.37.231&itag=35&sver=3&key=yt1&m
+t=1348800611&mv=m&source=youtube&ms=au&ipbits=8&factor=1.25&cp=U0hTTV
+hNUV9LTENOM19QR1VKOkFyQWNVSVFNbmNL&id=1100a4b92b939cd6&type=video/x-f
+lv&fallback_host=tc.v11.cache4.c.youtube.com&sig=885C9C098DF9D80E7801
+77E01CF944BC4F9564FE.9A374618A2BE8C2E562C8622DCB449A7071E37BD&quality
+=quality=small quality=medium
55
http://o-o---preferred---sn-u5a3u5a3-h5oe---v11---lscache4.c.youtube.c
+om/videoplayback?upn=8kbZJLkF5PA&sparams=algorithm%2Cburst%2Ccp%2Cfac
+tor%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2Cexpire&fexp=927101%2C9
+23006%2C922401%2C920704%2C912806%2C913419%2C913546%2C913556%2C919349%
+2C919351%2C925109%2C919003%2C920201%2C912706&expire=1348823962&algori
+thm=throttle-factor&burst=40&ip=92.22.37.231&itag=35&sver=3&key=yt1&m
+t=1348800611&mv=m&source=youtube&ms=au&ipbits=8&factor=1.25&cp=U0hTTV
+hNUV9LTENOM19QR1VKOkFyQWNVSVFNbmNL&id=1100a4b92b939cd6&type=video/x-f
+lv&fallback_host=tc.v11.cache4.c.youtube.com&sig=885C9C098DF9D80E7801
+77E01CF944BC4F9564FE.9A374618A2BE8C2E562C8622DCB449A7071E37BD&quality
+=quality=small quality=medium

    [download]
    If you tell me, I'll forget.
    If you show me, I'll remember.
    if you involve me, I'll understand.
    --- Author unknown to me
[reply]
[d/l]
[select]

      Hi, and THANKS! Now the plugin is working perfectly again.

      I really do need to get better with my Perl..

[reply]

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