I'm using dflydev's markdown which is based on michelf's project to transform Markdown into HTML.
My site is RTL by default and I'd like to add a custom tag to allow left-aligning paragraphs,
something like:
regular text, right aligned.
<- some text that will be aligned to the left
<--
fenced text that will be aligned to the left
<--
I'm trying to build the regex pattern to catch those blocks:
For <- ... I have: /^<- ([^\n]+)/
For the fenced block I couldn't get a working pattern
I'd like to get help on the fenced block regex and on improving the one-line regex I already have.
Thanks!
This would match your second group:
^<--.*?<--$
For your first group I would use something like this instead:
^<-[^-][^\r\n]*?$
For your first case you can use
/^<-(.*?)$/
and get the first group.
For the second case use
/^<--(.*?)<--$/
and get the first group.
Related
I have some urls saved in DB like hello world
with break tags, so i need to delete them, the problem that <br/> are in other places to so i can't delete all of them,
i write RegExp <*"*<br\/?>"> but it select not only <br> and quotes too.
You really shouldn't be using regular expressions for parsing HTML or XML.
Having said that. As I understand it, you have br tags inside the href attribute of a tags.
try :
href\s*?=\s*?\"(.*?)(<br\/?\>)\"
If you try to search about the right lines in the database, then this is your regex extended to match the whole line:
<.*\".*<br\/>\">.*>
After this you can mach the '<br/>' directly in those lines. Is there a language to edit your DB?
Some of the other answers here are okay. I'll offer an alternative:
https://regex101.com/r/uG5PBA/2
This'll put the break tags in a capture group -- group 1, so that you can simply nix them.
Regex:
<a[\s\S]*?(\<br\/>)[\s\S]*?<\/a>
Test String:
hello worldhello world
I have a csv in following format.
id,mobile
1,02146477474
2,08585377474
3,07646474637
4,02158789566
5,04578599525
I want to add a new column and add just leading 3 numbers to that column (for specific cases and all the others NOT_VALID string). So result should be:
id,number,provider
1,02146477474,021
2,08585377474,085
3,07646474637,NOT_VALID
4,02158789566,021
5,04578599525,NOT_VALID
I can use following regex for replacing that. But I would like to use all possible conversations in one step. Using UpdateRecord processor.
${field.value:replaceFirst('085[0-9]+','085')}
When I use something like this:
${field.value:replaceFirst('085[0-9]+','085'):or(${field.value:replaceFirst('086[0-9]+','086')}`)}
This replaces all with false.
Nifi uses Java regex
As soon, as you are using record processing, this should work for you:
${field.value:replaceFirst('^(021|085)?.*','$1')}
The group () optionally ? catches 021 or 085 at the beginning of string ^
The replacement - $1 - is the first group
PS: The sites like https://regex101.com/ helps to understand regex
I'm trying to scrape a piece of text from a website using Kimonolabs. The text is succesfully scraped using the advanced setting:
div > div > ul > li.location > span.value
The text being scraped using this CSS selector is:
Cityname, streetname 1
However, I wish to delete everything before the comma so that only remains:
Cityname
I wish to do this with regex, but I'm totally ignorant about it. What I do konw is that it has to containof 3 blocks when using Kimonolabs: https://help.kimonolabs.com/hc/en-us/articles/203043464-Manually-input-regular-expressions
Can anybody help me setting up the correct regex? All I got so far is the following, but it's not the correct markup for Kimonolabs (it doesn't allow for it in the dashboard):
^(.+?),
See the docs you referred to:
The regular expression pattern in kimono is defined in three parts. It's important that any custom regular expression you produce retains the three part notation, with the surrounding ( ) for each part. The first part refers to the pattern to the left of the desired content. The middle part refers to the pattern that the desired content must match and the third part refers to the pattern to the right of the desired content.
So, you seem to need:
/^()([^,]+)()/
Or, /(^)([^,]+)(,)/ (it should be equivalent), and the 2nd capture group (the middle part) should capture the Cityname.
I am trying to extract javascript code from HTML content that I receive via CFHTTP request.
I have this simple regex that catches everyting as long as there is no linebreak in the code between the tags.
var result=REMatch("<script[^>]*>(.*?)</script>",html);
This will catch:
<script>testtesttest</script<
but not
<script>
testtest
</script>
I have tried to use (?m) for multiline, but it doesn't work like that.
I am using the reference to figure it out but I am just not getting it with regex.
Heads up, normally there would be javascript between the script tags, not simple text so also characters like {}();:-_ etc.
Can anyone help me out?
Cheers
[[UPDATE]]
Thanks guys, I will try the solutions. I favor regex because but I will look into the HTML Parser too.
(?m) multiline mode is for making ^ and $ match on line breaks (not just start/end of string as is default), but what you're trying to do here is make . include newlines - for that you want (?s) (dot-all mode).
However, I probably wouldn't do this with regex - a HTML parser is a more robust solution. Here's how to do it with jSoup:
var result = jsoup.parse(html).select('script').text();
More details on using jSoup in CF are available here, or alternatively you can use the TagSoup parser, which ships with CF10 (so you don't need to worry about jars/etc).
If you really want regex, then you can use this:
var result = rematch('<script[^>]*>(?:[^<]+|<(?!/script>))+',html);
Unlike using (?s).*? this avoids matching empty blocks (but it will still fail in certain edge cases - if accuracy is required use a HTML parser).
To extract just the text from the first script block, you can strip the script tag with this:
result = ListRest( result[1] , '>' );
You can use dot matches all mode or replace . with [\s\S] to get the same effect.
<script[^>]*>[\s\S]*?</script> would match everything including newlines.
I'm trying to write a regexp which will help to find non-translated texts in html code.
Translated texts means that they are going through special tag: or through construction: ${...}
Ex. non-translated:
<h1>Hello</h1>
Translated texts are:
<h1><fmt:message key="hello" /></h1>
<button>${expression}</button>
I've written the following expression:
\<(\w+[^>])(?:.*)\>([^\s]+?)\</\1\>
It finds correct strings like:
<p>text<p>
Correctly skips
<a><fmt:message key="common.delete" /></a>
But also catches:
<li><p><fmt:message key="common.delete" /></p></li>
And I can't figure out how to add exception for ${...} strings in this expression
Can anybody help me?
If I understand you properly, you want to ensure the data inside the "tag" doesn't contain fmt:messsage or ${....}
You might be able to use a negative-lookahead in conjuction with a . to assert that the characters captured by the . are not one of those cases:
/<(\w+)[^>]*>(?:(?!<fmt:message|\$\{|<\/\1>).)*<\/\1>/i
If you want to avoid capturing any "tags" inside the tag, you can ignore the <fmt:message portion, and just use [^<] instead of a . - to match only non <
/<(\w+)[^>]*>(?:(?!\$\{)[^<])*<\/\1>/i
Added from comment If you also want to exclude "empty" tags, add another negative-lookahead - this time (?!\s*<) - ensure that the stuff inside the tag is not empty or only containing whitespace:
/<(\w+)[^>]*>(?!\s*<)(?:(?!\$\{)[^<])*<\/\1>/i
If the format is simple as in your examples you can try this:
<(\w+)>(?:(?!<fmt:message).)+</\1>
Rewritten into a more formal question:
Can you match
aba
but not
aca
without catching
abcba ?
Yes.
FSM:
Start->A->B->A->Terminate
Insert abcba and run it
Start is ready for input.
a -> MATCH, transition to A
b -> MATCH, transition to B
c -> FAIL, return fail.
I've used a simple one like this with success,
<([^>]+)[^>]*>([^<]*)</\1>
of course if there is any CDATA with '<' in those it's not going to work so well. But should do fine for simple XML.
also see
https://blog.codinghorror.com/parsing-html-the-cthulhu-way/
for a discussion of using regex to parse html
executive summary: don't