which regex pattern is the best for this string ?

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Hi, i wanna ask about some Regular Expression, though i'm not quite understand at regular Expression.

i wanna to know about the pattern for this string,

here is the String :

1. $BUMI
2. $BUMI,
3. $BUMI-W

and for those string, i want to change it become like this in c#

1. $<a href="BUMI">BUMI</a>
2. $<a href="BUMI">BUMI.</a>
3. $<a href="BUMI-W">BUMI-W</a>

thanks for the answer.

[edit]Code block added - OriginalGriff[/edit]

Posted 25-Mar-15 0:07am

Andrew Budiman

Updated 25-Mar-15 0:14am

OriginalGriff

v2

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Matt T Heffron 25-Mar-15 20:02pm

Do the input strings ALWAYS start with the $ character?
Or is it number, dot, space, $
Or ???
You need to tell us EXACTLY what the input patterns can be.

Obviously, not EVERY POSSIBLE input... but describe the patterns.
What is fixed?
What is constrained? (e.g., number only, or at least n-characters long, or ...)
What is variable?

Andrew Budiman 25-Mar-15 23:48pm

hi Matt T Heffron,

the input string is always start with the $ character
as of you said, after the $ character it can be 4 alphabet, and then, it can follow by - or . after - it can be followed by 1 alphabet.

so let me give an example..

$BUMI this is cool, <- $BUMI this is cool
$BUMI. this is cool <- $BUMI. this is cool
$BUMI-W this is cool <- $BUMI-W this is cool

the alphabet after BUMI, can be anything (4 alphabet or with -(1 alphabet(toUpper)) )

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OriginalGriff · Answer 1 · 2015-03-25T00:20:00

Solution 1

Just use

(.*?)(BUMI.*)$

And then use Regex.Replace:

C#

string outp = Regex.Replace(inp, @"(.*?)(BUMI.*)$", @"${1}<a href="${2}">${2}</a>");

"thanks for you answer, but the BUMI can be other word, maybe some kind of string, like BRMS, or BMRI."

So try this:

C#

string outp = Regex.Replace(inp, @"\$(BUMI.*)$", @"\$<a href="${1}">${1}</a>");

Posted 25-Mar-15 0:20am

OriginalGriff

Updated 25-Mar-15 0:32am

v2

Comments

Andrew Budiman 25-Mar-15 6:23am

thanks for you answer, but the BUMI can be other word, maybe some kind of string, like BRMS, or BMRI.

OriginalGriff 25-Mar-15 6:30am

So replace it...

OriginalGriff 25-Mar-15 6:33am

Answer updated
But if you need something specific, ask for something specific: remember that we can't see your screen, access your HDD, or read your mind! :laugh:

Andrew Budiman 25-Mar-15 6:32am

how do i replace it ?

OriginalGriff 25-Mar-15 6:36am

I'd suggest that you need to learn about Regexes: Get a copy of Expresso

http://www.ultrapico.com/Expresso.htm

it's free, and it examines and generates Regular expressions.

ruinei 30-Mar-15 12:15pm

Lynda.com also has a great Regular Expressions course.

Andrew Budiman 9-Apr-15 5:01am

there's no more time for me to learn about regex. i just need to quickly implement it to my code.

here i found your old pattern @originalGriff public static Regex regex = new Regex(
"\\$(?<PostDollar>[\\w]+)(?<term>\\s|$)",
RegexOptions.IgnoreCase
| RegexOptions.Multiline
| RegexOptions.CultureInvariant
| RegexOptions.IgnorePatternWhitespace
| RegexOptions.Compiled
);
public static string regexReplace = "http://webname/name.aspx?name=${PostDollar}";

but it won't work if the string has . or -w