Substrings and splitting












-2















I have a lot of messages formatted like this



"42["message","base64:QWZ0ZXIgQnVuZGxlciBpbnN0YWxscyB0aGUgZ2VtcyBpbiB5b3VyIEdlbWZpbGUsIHlvdSBjYW4gcHJvY2VlZCB0byByZWZlcmVuY2UgdGhlbSBpbiA0eTQ0NG91ciBjb2RlIGp1c3QgYXMgaWYgeW914oCZZCBpbnN0YWxsZWQgdGhlbSB5b3Vyc2VsZi4="]"


What I want to do is if the message contains base64: then extract the substring after the colon and before the next quote mark.



edit: this works but is probably horrible.



if event.data.include? 'base64:'
new_string = event.data[event.data.rindex("base64:") + "base64:".length..-3]
puts new_string
end









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  • 4





    What is stopping you? What have you tried so far? Show us your code...

    – L. O. van Ingen
    Nov 14 '18 at 11:28
















-2















I have a lot of messages formatted like this



"42["message","base64:QWZ0ZXIgQnVuZGxlciBpbnN0YWxscyB0aGUgZ2VtcyBpbiB5b3VyIEdlbWZpbGUsIHlvdSBjYW4gcHJvY2VlZCB0byByZWZlcmVuY2UgdGhlbSBpbiA0eTQ0NG91ciBjb2RlIGp1c3QgYXMgaWYgeW914oCZZCBpbnN0YWxsZWQgdGhlbSB5b3Vyc2VsZi4="]"


What I want to do is if the message contains base64: then extract the substring after the colon and before the next quote mark.



edit: this works but is probably horrible.



if event.data.include? 'base64:'
new_string = event.data[event.data.rindex("base64:") + "base64:".length..-3]
puts new_string
end









share|improve this question




















  • 4





    What is stopping you? What have you tried so far? Show us your code...

    – L. O. van Ingen
    Nov 14 '18 at 11:28














-2












-2








-2








I have a lot of messages formatted like this



"42["message","base64:QWZ0ZXIgQnVuZGxlciBpbnN0YWxscyB0aGUgZ2VtcyBpbiB5b3VyIEdlbWZpbGUsIHlvdSBjYW4gcHJvY2VlZCB0byByZWZlcmVuY2UgdGhlbSBpbiA0eTQ0NG91ciBjb2RlIGp1c3QgYXMgaWYgeW914oCZZCBpbnN0YWxsZWQgdGhlbSB5b3Vyc2VsZi4="]"


What I want to do is if the message contains base64: then extract the substring after the colon and before the next quote mark.



edit: this works but is probably horrible.



if event.data.include? 'base64:'
new_string = event.data[event.data.rindex("base64:") + "base64:".length..-3]
puts new_string
end









share|improve this question
















I have a lot of messages formatted like this



"42["message","base64:QWZ0ZXIgQnVuZGxlciBpbnN0YWxscyB0aGUgZ2VtcyBpbiB5b3VyIEdlbWZpbGUsIHlvdSBjYW4gcHJvY2VlZCB0byByZWZlcmVuY2UgdGhlbSBpbiA0eTQ0NG91ciBjb2RlIGp1c3QgYXMgaWYgeW914oCZZCBpbnN0YWxsZWQgdGhlbSB5b3Vyc2VsZi4="]"


What I want to do is if the message contains base64: then extract the substring after the colon and before the next quote mark.



edit: this works but is probably horrible.



if event.data.include? 'base64:'
new_string = event.data[event.data.rindex("base64:") + "base64:".length..-3]
puts new_string
end






ruby string






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edited Nov 19 '18 at 2:59









Cœur

18k9108147




18k9108147










asked Nov 14 '18 at 11:18









William MansellWilliam Mansell

34




34








  • 4





    What is stopping you? What have you tried so far? Show us your code...

    – L. O. van Ingen
    Nov 14 '18 at 11:28














  • 4





    What is stopping you? What have you tried so far? Show us your code...

    – L. O. van Ingen
    Nov 14 '18 at 11:28








4




4





What is stopping you? What have you tried so far? Show us your code...

– L. O. van Ingen
Nov 14 '18 at 11:28





What is stopping you? What have you tried so far? Show us your code...

– L. O. van Ingen
Nov 14 '18 at 11:28












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message = "42["message","base64:QWZ0ZXIgQnVuZGxlciBpbnN0YWxscyB0aGUgZ2VtcyBpbiB5b3VyIEdlbWZpbGUsIHlvdSBjYW4gcHJvY2VlZCB0byByZWZlcmVuY2UgdGhlbSBpbiA0eTQ0NG91ciBjb2RlIGp1c3QgYXMgaWYgeW914oCZZCBpbnN0YWxsZWQgdGhlbSB5b3Vyc2VsZi4="]"
base64 = message[/base64:(.+?)"/, 1]
puts(Base64.decode64(base64)) unless base64.nil?





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    message = "42["message","base64:QWZ0ZXIgQnVuZGxlciBpbnN0YWxscyB0aGUgZ2VtcyBpbiB5b3VyIEdlbWZpbGUsIHlvdSBjYW4gcHJvY2VlZCB0byByZWZlcmVuY2UgdGhlbSBpbiA0eTQ0NG91ciBjb2RlIGp1c3QgYXMgaWYgeW914oCZZCBpbnN0YWxsZWQgdGhlbSB5b3Vyc2VsZi4="]"
    base64 = message[/base64:(.+?)"/, 1]
    puts(Base64.decode64(base64)) unless base64.nil?





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      message = "42["message","base64:QWZ0ZXIgQnVuZGxlciBpbnN0YWxscyB0aGUgZ2VtcyBpbiB5b3VyIEdlbWZpbGUsIHlvdSBjYW4gcHJvY2VlZCB0byByZWZlcmVuY2UgdGhlbSBpbiA0eTQ0NG91ciBjb2RlIGp1c3QgYXMgaWYgeW914oCZZCBpbnN0YWxsZWQgdGhlbSB5b3Vyc2VsZi4="]"
      base64 = message[/base64:(.+?)"/, 1]
      puts(Base64.decode64(base64)) unless base64.nil?





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        message = "42["message","base64:QWZ0ZXIgQnVuZGxlciBpbnN0YWxscyB0aGUgZ2VtcyBpbiB5b3VyIEdlbWZpbGUsIHlvdSBjYW4gcHJvY2VlZCB0byByZWZlcmVuY2UgdGhlbSBpbiA0eTQ0NG91ciBjb2RlIGp1c3QgYXMgaWYgeW914oCZZCBpbnN0YWxsZWQgdGhlbSB5b3Vyc2VsZi4="]"
        base64 = message[/base64:(.+?)"/, 1]
        puts(Base64.decode64(base64)) unless base64.nil?





        share|improve this answer













        message = "42["message","base64:QWZ0ZXIgQnVuZGxlciBpbnN0YWxscyB0aGUgZ2VtcyBpbiB5b3VyIEdlbWZpbGUsIHlvdSBjYW4gcHJvY2VlZCB0byByZWZlcmVuY2UgdGhlbSBpbiA0eTQ0NG91ciBjb2RlIGp1c3QgYXMgaWYgeW914oCZZCBpbnN0YWxsZWQgdGhlbSB5b3Vyc2VsZi4="]"
        base64 = message[/base64:(.+?)"/, 1]
        puts(Base64.decode64(base64)) unless base64.nil?






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        answered Nov 14 '18 at 12:26









        Kimmo LehtoKimmo Lehto

        4,08911328




        4,08911328






























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