Re: Regex repeating capture
- From: "Mythran" <kip_potter@xxxxxxxxxxx>
- Date: Tue, 30 Jan 2007 17:06:53 -0800
"Jay" <JaythePCguy@xxxxxxxxx> wrote in message news:1170180040.876508.261640@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I know what the identifiers are, so I'm okay with replacing the .{4}
with (Identifier1|Identifier2|...|IdentifierN) at run time. However, I
cannot blindly end the data capture on an asterisk. "*CZ1 2.3 4*A56
*fuuuS24364 08 23 72" is also valid provide *A6 is not a valid
identifier. The data capture can only end if it encounters another
valid identifier.
On Jan 30, 12:52 pm, "Jay" <JaythePC...@xxxxxxxxx> wrote:The identifier is at least 2 character, but has no upper limit.
Thanks,
Jay
On Jan 30, 12:36 pm, "Mythran" <kip_pot...@xxxxxxxxxxx> wrote:
> "Mythran" <kip_pot...@xxxxxxxxxxx> wrote in > messagenews:406FDAFC-735E-433F-A47A-478A660F0679@xxxxxxxxxxxxxxxx
> > <jayluc...@xxxxxxxxx> wrote in message
> >news:1170174574.488763.29890@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> >> Howdy,
> >> I'm trying to break an input string into multpile pieces using a
> >> series of delimiters that start with an asterisk. Following the
> >> asterisk is a mulitple character identifier immediately followed by > >> a
> >> data string of variable length. The input string may contain more > >> than
> >> one identifier anywhere in the string.
> >> Here is an example:
> >> *CZ1 2.3 4-56 *fuuuS24364 08 23 72
> >> I'd like to break this into
> >> CZ
> >> 1 2.3 4-56
> >> fuuu
> >> S24364 08 23 72
> >> I have tried the pattern (?:\*(CZ|fuuu)(.*)), which produces the
> >> following ouput:
> >> CZ
> >> 1 2.3 4-56 *fuuuS24364 08 23 72
> >> How can I force it to repeat the capturing?
> >> Thanks,
> >> Jay
> > So, to split based on an * using a regular expression:
> > string pattern = @"\*(?<Text>[^\*]+)";
> > string input = "*CZ1 2.3 4-56 *fuuuS24364 08 23 72";
> > Match match = Regex.Match(input, pattern);
> > while (match.Success) {
> > Console.WriteLine(match.Groups["Text"].Value);
> > match = match.NextMatch();
> > }
> > HTH,
> > Mythranahh, I didn't know you wanted to break it out into identifier, > > text,
> identifier, text...thus the previous post should be obliterated :P...do > you
> know if the identifier is always 4 characters? Hope so, the following
> example shows how to achieve this:
> string pattern = @"\*(?<Identifier>.{4})(?<Value>[^\*]+)";
> string input = "*CZ1 2.3 4-56 *fuuuS24364 08 23 72";
> Match match = Regex.Match(input, pattern);
> while (match.Success) {
> Console.WriteLine(
> "Identifier: {0} - Value: {1}",
> match.Groups["Identifier"].Value,
> match.Groups["Value"].Value
> );
> match = match.NextMatch();
> }HTH,
> Mythran
How many identifiers are there? If there are a small list (say, less than 10ish), then you can use the regex OR character '|' in the pattern to separate the list of valid identifiers instead of matching on the asterisk itself.
HTH,
Mythran
.
- References:
- Regex repeating capture
- From: jaylucier
- Re: Regex repeating capture
- From: Mythran
- Re: Regex repeating capture
- From: Mythran
- Re: Regex repeating capture
- From: Jay
- Re: Regex repeating capture
- From: Jay
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