objective c - NSRegularExpression - Probleme with a Pattern -



objective c - NSRegularExpression - Probleme with a Pattern -

i've wrote little programme find string in string works fine far. have problem nsregularexpression - need right pattern special case , stuck.

nsstring *strregexp = [nsstring stringwithformat:@"?trunk/%@/%@/+\\([a-za-z0-9_\\-\\.])+/host-1", inputstrse , inputstrsno]; nsregularexpression *regex = [nsregularexpression regularexpressionwithpattern:strregexp options: nsregularexpressioncaseinsensitive error:null]; nsarray *arrayofallmatches = [regex matchesinstring:inputurl options:0 range:nsmakerange(0, [inputurl length])];

the nsregularexpression pattern should match string this:

trunk/%@/%@/some-text-1/host-1 trunk/test/1/5-text-text/host-1

where trunk/%@/%@/ , /host-1 stays same. part in middle variable , looks this:

number-some-text -> 5-hello-world -> /trunk/test/1/5-hello-world/host-1

i've tried different regexp see here: "?trunk/%@/%@/+\([a-za-z0-9_\-\.])+/host-1", still seems not work, maybe can help me.

maybe there probleme when build pattern with:

nsstring *strregexp = [nsstring stringwithformat:@"?trunk/%@/%@/+\\([a-za-z0-9_\\-\\.])+/host-1", inputstrse , inputstrsno];

and utilize later that:

regularexpressionwithpattern:strregexp

i hope can help me - i'm new regularexpressions.

generally, expressing regex "i want match number of letters, dash, number" , on easiest way build one. also, using tool such http://www.regexr.com simplifies lot.

from understand want match following:

trunk/test/1/[some number]-[some text]-[some other text]/host-1

if so, next regular look should cutting it:

trunk\/test\/1\/[0-9]*-[a-za-z]*-[a-za-z]*\/host-1

it following:

trunk\/test\/1\/: match constant string trunk/test/1/ (the backslashes escapes) [0-9]*-: match number of digits followed - [a-za-z]*-: match number of letters followed - [a-za-z]*: match number of letters \/host-1: match constant string /host-1/

here link regexr can utilize if want experiment different input info or changes regex: http://regexr.com/39tgn

the next string provided in comments: trunk\test\/1\/.*\/host-1. it's bit less strict job well.

objective-c regex nsstring nsregularexpression

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