need Help Regex

  • Thread starter Thread starter JM
  • Start date Start date
J

JM

Hi,

I am not sure if this is the place to post a REGEX question if not, please
indicate me where i can post it?.

My question:
Given a string like: "Boston. MA. Holidays" I need to define the regular
expression to find each dot, the previous word and the word after. That is i
want to obtain:

first match: "Boston" "." "MA"
second match: "MA" "." "Holidays"

The problem is that if I use somthing like: ([^\s\.]+)(\.)(\s*[^\s\.]+) I
"cosume" MA in the first macth so I do not have a second match. That is I
obtained:

first match: "Boston" "." "MA"
and no more matches, since MA is consumed in the previous match.

Any help??

Thanks,
jaime
 
Hi,

I am not sure if this is the place to post a REGEX question if not, please
indicate me where i can post it?.

My question:
Given a string like: "Boston. MA. Holidays" I need to define the regular
expression to find each dot, the previous word and the word after. That is i
want to obtain:

first match: "Boston" "." "MA"
second match: "MA" "." "Holidays"

The problem is that if I use somthing like: ([^\s\.]+)(\.)(\s*[^\s\.]+) I
"cosume" MA in the first macth so I do not have a second match. That is I
obtained:

first match: "Boston" "." "MA"
and no more matches, since MA is consumed in the previous match.

Any help??

Thanks,
jaime
Click to expand...

Could a simpler implementation not be to split by ".", then you will
have an array of strings that you can just move through a pair at a time
running the trim function to remove whitespace.

Example
========

string[] parts = full_string.Split('.');

if (parts.length > 2) {
string a = parts[0].Trim();
string b = parts[1].Trim();

DoSomething(a, b);

for (i = 2; i < parts.Length; i++) {
a = b;
b = parts.Trim();

DoSomething(a, b);
}
}

========
 
Thanks Chris.
But actually I need to do it using Regular Expressions.


Chris Chilvers said:
Hi,

I am not sure if this is the place to post a REGEX question if not, please
indicate me where i can post it?.

My question:
Given a string like: "Boston. MA. Holidays" I need to define the regular
expression to find each dot, the previous word and the word after. That is
i
want to obtain:

first match: "Boston" "." "MA"
second match: "MA" "." "Holidays"

The problem is that if I use somthing like: ([^\s\.]+)(\.)(\s*[^\s\.]+) I
"cosume" MA in the first macth so I do not have a second match. That is I
obtained:

first match: "Boston" "." "MA"
and no more matches, since MA is consumed in the previous match.

Any help??

Thanks,
jaime
Click to expand...

Could a simpler implementation not be to split by ".", then you will
have an array of strings that you can just move through a pair at a time
running the trim function to remove whitespace.

Example
========

string[] parts = full_string.Split('.');

if (parts.length > 2) {
string a = parts[0].Trim();
string b = parts[1].Trim();

DoSomething(a, b);

for (i = 2; i < parts.Length; i++) {
a = b;
b = parts.Trim();

DoSomething(a, b);
}
}

========
Click to expand...
 
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