Regular Expressions

Dave Kreskowiak29-Dec-20 16:15

Dave Kreskowiak

29-Dec-20 16:15

What does it take to get you to copy and paste the code you're using where you're setting up and using this RegEx?

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Dave Kreskowiak

Member 1357268430-Dec-20 11:08

30-Dec-20 11:08

Hi Dave,

Sorry for the delayed response

The reason for wanting to show a screenshot is because I use application to insert the a Search and Replace regex. So I would enter [A-Za-z]{3}\d{4} in the Search dialogue box, and [A-Za-z]{3}(?=\d{4}) in the replace dialoge box.

The search regex works fine, but the replace regex returns [A-Za-z]{3}(?=\d{4})

I'm assuming the the Regex pattern HTML 5 FireFox doesn't allow for replace?

Dave Kreskowiak30-Dec-20 11:47

Dave Kreskowiak

30-Dec-20 11:47

You're making a lot of baseless assumptions and STILL not providing what is needed to solve the problem.

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Dave Kreskowiak

Member 1357268430-Dec-20 11:54

30-Dec-20 11:54

Dave,

I'm not sure I could be any clearer.

If you looked at the image you would see exactly what happens when I insert the Regex

Case Conversion Regular Expression in JAVA 8

Dave Kreskowiak30-Dec-20 11:57

Dave Kreskowiak

30-Dec-20 11:57

Never heard of DataCleaner. Don't use it and not going to start.

If it's some tool you found somewhere, your best source of support is going to be whoever wrote it.

Your BIGGEST mistake was never telling anyone you were using some tool to do this work instead of writing your own code to do it.

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Google: C# How to debug code
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Dave Kreskowiak

Member 1357268427-Dec-20 22:13

Re: Case Conversion Regular Expression in JAVA 8

27-Dec-20 22:13

Hi Community,

I have come to the conclusion that it may not to be possible to change the case of a string in JAVA 8 as simply as it is to change the case in say Perl.

However, before I move on, I just wanted to have someone on this forum confirm its not possible to change the case in JAVA 8 as follows:

Insert the whole regex match or the 1st through 99th backreference with the first letter of each word in the matched text converted to uppercase and the remaining letters converted to lowercase.

Example

Replacing .+ with \I0 in HeLlO WoRlD yields Hello World

Can someone confirm that the above isn't possible with JAVA 8?

If its not possible, can someone let me know how to achieve the above with JAVA 8?

Thanks

Richard MacCutchan27-Dec-20 22:48

Re: Case Conversion Regular Expression in JAVA 8

27-Dec-20 22:48

I suggested to you last week that it would be easier to use string functions to do what you want. Convert the entire string to lower case, then find each word beginning and convert the single letter to upper case.

Member 1357268428-Dec-20 8:30

Re: Case Conversion Regular Expression in JAVA 8

28-Dec-20 8:30

Hey Richard,

I was so fixated with the way I wanted to achieve the result that I didn't realise how easy it is to get the result using your suggestion. TBH, with your suggestion I can get the result just using SQL, converting the entire string to lower case (as you suggested) and using a simple SQL function (which I'm familiar with) to Capitalize each word.

I literally would have saved myself 9 hours of trying to figure this out.

Thanks man

Member 1357268428-Dec-20 8:32

Regular Expression to Change Uppercase Text to Lowercase

28-Dec-20 8:32

Thanks man

How to namn this?

Xfinger Fxinger24-Dec-20 19:40

Xfinger Fxinger

24-Dec-20 19:40

[S1.E2] The Series Name - The Episod Name

To look like this:

The.Series.Name.S01E02.The.Episod.Name.

Not matching with tvdb will say, if it did, it had been easy

Thanks for helping =)

Re: How to namn this?

PIEBALDconsult24-Dec-20 19:45

PIEBALDconsult

24-Dec-20 19:45

Adding the leading zeroes with only a Regular Expression replacement may prove difficult.
If you're trying to match the two formats, it may be better to convert the other way.

What are you really trying to do?

modified 25-Dec-20 1:52am.

Member 1357268424-Dec-20 2:44

Re: Regular Expression to Change Uppercase Text to Lowercase

24-Dec-20 2:44

Can someone assist with a regular expression that will replace and capitalize the first character in a text characters to lowercase

For example
PETER Before
Peter After

JohN Before
John After

paul Before
Paul After

The following Regex will locate the Uppercase characters

[A-Z]

But I don't know how to replace them by turning the first character to Uppercase.

Thanks

Richard MacCutchan24-Dec-20 4:20

Re: Regular Expression to Change Uppercase Text to Lowercase

24-Dec-20 4:20

You are probably better off using one of the many methods available with the String type. But since you have not identified which language you are using, that is something of a guess.

Member 1357268424-Dec-20 5:13

Re: Regular Expression to Change Uppercase Text to Lowercase

24-Dec-20 5:13

Hi,

Thanks for reaching out.

Sorry for not mentioning the language.

The language is JAVA 8

Richard MacCutchan24-Dec-20 5:18

Re: Regular Expression to Change Uppercase Text to Lowercase

24-Dec-20 5:18

See String (Java Platform SE 7 )[^].

Member 1357268424-Dec-20 5:28

Re: Regular Expression to Change Uppercase Text to Lowercase

24-Dec-20 5:28

Hi Richard,

Thanks for reaching out.

And thanks for the link.

Unfortunately, I'm extremely new to Regex so unfortunately I wouldn't know where to look in the link

String (Java Platform SE 7 )[^]

I thought this was a pretty easy question for someone help with an answer to?

Richard MacCutchan24-Dec-20 5:32

Re: Regular Expression to Change Uppercase Text to Lowercase

24-Dec-20 5:32

The String class has nothing to do with Regexes. You use it to quickly convert all characters to lower case. You can then find some method to capitalise the first letter of each word.

Member 1357268424-Dec-20 5:35

Re: Regular Expression to Change Uppercase Text to Lowercase

24-Dec-20 5:35

Hi Richard,

Sorry to be pain, but could please provide an example

Richard MacCutchan24-Dec-20 5:45

Re: Regular Expression to Change Uppercase Text to Lowercase

24-Dec-20 5:45

I have a better idea. Think about what you are trying to do and work out which methods are likely to help you. You will learn far more by trying things yourself.

Member 1357268424-Dec-20 6:11

Re: Regular Expression to Change Uppercase Text to Lowercase

24-Dec-20 6:11

ok, I will think of something.

I will post it. Hopefully, you'll let me know if I'm on the right track

Member 1357268424-Dec-20 8:13

Re: Regular Expression to Change Uppercase Text to Lowercase

24-Dec-20 8:13

I'm never going to figure it out!

Can I get some hints on a solution?

Member 1357268425-Dec-20 8:41

Re: Regular Expression to Change Uppercase Text to Lowercase

25-Dec-20 8:41

So, this is my attempt

I tried the following regex in Java 8, (?i)(Helló) (Wórld) which matches HeLlÓ WóRlD the replacement string \U$1 \L$2 should become HELLÓ wórld, but it doesn't work.

Can someone please help me???

Gerry Schmitz24-Dec-20 4:57

Gerry Schmitz

24-Dec-20 4:57

In C# (for example) there is no "proper case": one changes to "lower case", then uses "title case".

TextInfo.ToTitleCase(String) Method (System.Globalization) | Microsoft Docs

Quote:
Converts the specified string to title case (except for words that are entirely in uppercase, which are considered to be acronyms).

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food

Re: Regular Expression to Change Uppercase Text to Lowercase

Member 1357268424-Dec-20 5:14