firepol
asked on
regular expression to replace what's Inside a match
Hello, I think the easiest is to show you what I get with my regex, and tell you what I'd like to achieve...
If I run the attached C# code snippet I get this result:
-- BEGIN
xmlString: DT_EFFECTIVE_FROM_UTC="200
fixedString: DT_EFFECTIVE_FROM_UTC="T" SOME_ATTRIBUTE="This T should Stay" DT_EFFECTIVE_UNTIL_UTC="T"
-- END
The regular expression matches the "T" inside a datetime of the following format: 2008-09-25T16:18:55.
What I want to achieve, is to get rid of the "T" inside the datetime. So I'd like to get this:
fixedString: DT_EFFECTIVE_FROM_UTC="200
Please give me the correct regular expression to use, or the corrections to my code to obtain it.
Thank you.
If I run the attached C# code snippet I get this result:
-- BEGIN
xmlString: DT_EFFECTIVE_FROM_UTC="200
fixedString: DT_EFFECTIVE_FROM_UTC="T" SOME_ATTRIBUTE="This T should Stay" DT_EFFECTIVE_UNTIL_UTC="T"
-- END
The regular expression matches the "T" inside a datetime of the following format: 2008-09-25T16:18:55.
What I want to achieve, is to get rid of the "T" inside the datetime. So I'd like to get this:
fixedString: DT_EFFECTIVE_FROM_UTC="200
Please give me the correct regular expression to use, or the corrections to my code to obtain it.
Thank you.
//Goal: get rid of the "T" inside the datetime
string xmlString = "DT_EFFECTIVE_FROM_UTC=\"2008-09-25T16:18:55\" SOME_ATTRIBUTE=\"This T should Stay\" DT_EFFECTIVE_UNTIL_UTC=\"2009-01-01T00:00:00\" ANOTHER_ATTRIBUTE=\"Value For This Attribute\"";
// Search for datetime values of the format 2004-08-22T00:00:00
string rp = @"\d{4}-\d{2}-\d{2}(.*?)\d{2}:\d{2}:\d{2}";
// TODO: replace just the "T" with a blank space.
// The following doesn't work as I want. It replaces what is OUTSIDE the T... I want to get rid of the T, not of the date.
string fixedString = Regex.Replace(xmlString, rp, "$1");
// I use it from an aspx page, thus I use Response.Write
Response.Write("<pre>" + xmlString + "\r\n\r\n" + fixedString + "</pre>");
if possible i will fix the source of the problem and not go for a regular expression fix
the source of the data is DateTime.ToString() function
just use DateTime.Now.ToString("yyy
the source of the data is DateTime.ToString() function
just use DateTime.Now.ToString("yyy
ASKER
I copied exactly your code:
string rp = @"\d{4}-\d{2}-\d{2}(.*?)\d
string fixedString = Regex.Replace(xmlString, rp, "$` $'");
and I obtain:
fixedString: DT_EFFECTIVE_FROM_UTC="DT_
It doesn't work. The fixedString seems to double length and the T is still there...
Maybe I should do a foreach and for every matched occurrence, I need to do a simple replace of the "T" with " "... ?
I can't eliminate the problem from the source (I've already tried it) because the DateTime object, when SERIALIZED into XML becomes by default a string with this format: 2009-01-01T00:00:00. A manual replace is needed as I'm sending the XML to a third party application that does not support the "T" in the dateTimeFormat...
string rp = @"\d{4}-\d{2}-\d{2}(.*?)\d
string fixedString = Regex.Replace(xmlString, rp, "$` $'");
and I obtain:
fixedString: DT_EFFECTIVE_FROM_UTC="DT_
It doesn't work. The fixedString seems to double length and the T is still there...
Maybe I should do a foreach and for every matched occurrence, I need to do a simple replace of the "T" with " "... ?
I can't eliminate the problem from the source (I've already tried it) because the DateTime object, when SERIALIZED into XML becomes by default a string with this format: 2009-01-01T00:00:00. A manual replace is needed as I'm sending the XML to a third party application that does not support the "T" in the dateTimeFormat...
Actually I am also using serialized objects to be passed as XML to my SQL Stored Procedures
Actually what happens that the datetime serialization is what we are trying to fix
but if i create a public property which returns that date as a string it will solve the problem
public stirng DateString
{
get { return date.ToString("yyyy-MM-dd hh:mm:ss"); }
set { throw new InvalidOperationException (); }
}
-- something like this and it will return the datetime without the "T" in it
Actually what happens that the datetime serialization is what we are trying to fix
but if i create a public property which returns that date as a string it will solve the problem
public stirng DateString
{
get { return date.ToString("yyyy-MM-dd hh:mm:ss"); }
set { throw new InvalidOperationException (); }
}
-- something like this and it will return the datetime without the "T" in it
ASKER CERTIFIED SOLUTION
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totally understood
even i could have done that but i took the call of doing the string because first its being serialized to an XML which is already a string so didnt see much harm
Also after looking at your code and the amount of extra code and processing i think that using a string was a better option for me - lower code to maintain
Thanks anyways for giving me the regex approach - who knows might come handy later
even i could have done that but i took the call of doing the string because first its being serialized to an XML which is already a string so didnt see much harm
Also after looking at your code and the amount of extra code and processing i think that using a string was a better option for me - lower code to maintain
Thanks anyways for giving me the regex approach - who knows might come handy later
string fixedString = Regex.Replace(xmlString, rp, "$` $'");