in reply to Regex: Ignore \n in \S

You don't show the code you use, so it's hard to say how your regular expression "returns" something.

Maybe you want to use ([^\n]+) instead of the (\S+)? But \n would be in the \s class, so your \S shouldn't capture a \n. Please show the actual code you use.

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Re^2: Regex: Ignore \n in \S
by manav_gupta (Acolyte) on Sep 12, 2010 at 20:45 UTC
    Apologies. I meant to convey that $1 would "return" "\n" as well, instead of the non-spaces before it.
    The regex I'd be using is DIP\s+\S+\s+(\S+).*?\\n
[reply]
[d/l]

      Ah. Now I understand. You have a literal "\n", not a newline in your data, but you don't want to capture that. The easiest way is to restrict the character class to not include the backslash:

      for (<DATA>) {
    print "Matched: $1\n"
        if /DIP\s+\S+\s+([^\\\s]+).*?\\n/;
    
};
__DATA__
*** ALARM 009 A2/APT \"KEN5-132/019/00\" 100831   1511      \nSWITCHIN
+G NETWORK TERMINAL FAULT\n\nSNT                TCASE  STATE    FCODE 
+SUBSNT  INFO        DIP amad theoneiwant\n RTDMA-63           4      
+BLOC     38\n\nEXTERNAL EQUIPMENT FAILURE\n\nEXTP                MG\n
+2-2-010109          MEAPH\nEND
*** ALARM 009 A2/APT \"KEN5-132/019/00\" 100831   1511      \nSWITCHIN
+G NETWORK TERMINAL FAULT\n\nSNT                TCASE  STATE    FCODE 
+SUBSNT  INFO        DIP amad theoneiwant      \n RTDMA-63           4
+      BLOC     38\n\nEXTERNAL EQUIPMENT FAILURE\n\nEXTP              
+  MG\n2-2-010109          MEAPH\nEND
*** ALARM 009 A2/APT \"KEN5-132/019/00\" 100831   1511      \nSWITCHIN
+G NETWORK TERMINAL FAULT\n\nSNT                TCASE  STATE    FCODE 
+SUBSNT  INFO        DIP amad theoneiwant hello world \n RTDMA-63     
+      4      BLOC     38\n\nEXTERNAL EQUIPMENT FAILURE\n\nEXTP       
+         MG\n2-2-010109          MEAPH\nEND
*** ALARM 009 A2/APT \"KEN5-132/019/00\" 100831   1511      \nSWITCHIN
+G NETWORK TERMINAL FAULT\n\nSNT                TCASE  STATE    FCODE 
+SUBSNT  INFO        DIP amad theoneiwant\n RTDMA-63           4      
+BLOC     38\n\nEXTERNAL EQUIPMENT FAILURE\n\nEXTP                MG\n
+2-2-010109          MEAPH\nEND

      [download]

      The character class \S will not match any whitespace, but the character sequence "\n" (that is, backslash, followed by "n") is not whitespace.

[reply]
[d/l]
[select]
        A better way would be to decode the lines, i.e. convert the "\n" into newlines. 
        while (<DATA>) {
    s/\\n/\n/g;
    print "Matched: $1\n"
        if /DIP\s+\S+\s+(\S+).*?\n/;
    
}

        [download]
[reply]
[d/l]
        Holy cow. Thank you. I've spent over 3 hours trying to tackel it! Thank you!
[reply]

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