Regular Expressions 101

Explanation

Pro

Group 1((C1)(.*?))?

?repeats the group contents below at most once:

Group 2(C1)

C1the literal text C1 (case sensitive)

Group 3(.*?)

.*?any character (except for line terminators), repeated any number of times

Group 4((C2)(.*?))?

?repeats the group contents below at most once:

Group 5(C2)

C2the literal text C2 (case sensitive)

Group 6(.*?)

.*?any character (except for line terminators), repeated any number of times

Group 7((C3)(.*?))?

?repeats the group contents below at most once:

Group 8(C3)

C3the literal text C3 (case sensitive)

Group 9(.*?)

.*?any character (except for line terminators), repeated any number of times

Group 10((C4)(.*?))?

?repeats the group contents below at most once:

Group 11(C4)

C4the literal text C4 (case sensitive)

Group 12(.*?)

.*?any character (except for line terminators), repeated any number of times

Group 13(\.zip|$)

1st Alternative\.zip

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

zipthe literal text zip (case sensitive)

2nd Alternative$

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

((C1)(.*?))?((C2)(.*?))?((C3)(.*?))?((C4)(.*?))?(\.zip|$)

New

C1 Anything, Notice How The Groups Are Always The Same C2 Anything C3 Anything C4 Anything.zip
C1 Anything, The Same No Matter Which C's Are Present C2 Anything C3 Anything C4 Anything.zip
C1 Anything, This One Is An Example Of No Extension C4 Anything
C1 Anything, The File Extension Is Always Group 13 C3 Anything.zip
C2 Anything, This One Starts With "C2" C3 Anything.zip
C3 Anything, And This One Starts With "C3" C4 Anything.zip

Group 2 is always C1 and anything after is always Group 3
Group 5 is always C2 and anything after is always Group 6
Group 8 is always C3 and anything after is always Group 9
Group 11 is always C4 and anything after is always Group 12
Group 13 (the file extension) is always .zip

But, is there a way of stopping group 13 matching with the end of every line whilst still maintaining this group structure?