re2 | friendly alternative to backtracking regular expression | Regex library

by google C++ Version: 2023-06-02 License: BSD-3-Clause

X-Ray Key Features Code Snippets(5)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | re2 Summary

re2 is a C++ library typically used in Utilities, Regex applications. re2 has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

This is the source code repository for RE2, a regular expression library. For documentation about how to install and use RE2, visit

Support

Quality

Security

License

Reuse

Support

re2 has a medium active ecosystem.

It has 7876 star(s) with 1121 fork(s). There are 239 watchers for this library.

There were 2 major release(s) in the last 12 months.

There are 0 open issues and 349 have been closed. On average issues are closed in 57 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of re2 is 2023-06-02

Quality

re2 has 0 bugs and 0 code smells.

Security

re2 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

re2 code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

re2 is licensed under the BSD-3-Clause License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

re2 releases are available to install and integrate.

It has 841 lines of code, 27 functions and 5 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

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re2 Key Features

No Key Features are available at this moment for re2.

re2 Examples and Code Snippets

RegEx to accept String, # and a number

Python

Lines of Code : 2

License : Strong Copyleft (CC BY-SA 4.0)

Copy

^(BUG|bug|Bug) *(?:# *)?\d{5,6}$

Regex in Google Analytics v4 to fetch pagePath not containing "?"

Python

Lines of Code : 2

License : Strong Copyleft (CC BY-SA 4.0)

Copy

^([^?\r\n]+)$

Python Regular Expressions to NFA

Python

Lines of Code : 59

License : Strong Copyleft (CC BY-SA 4.0)

Copy

try:
    import re2 as re
    re.set_fallback_notification(re.FALLBACK_WARNING)
except ImportError:
    # latest version was for Python 2.6
else:
    import re

import re
try:
    import re2
    re2.set_fallback_not

How can I use Regex to find a string of characters in alphabetical order using Python?

Python

Lines of Code : 8

License : Strong Copyleft (CC BY-SA 4.0)

Copy

((?:a+(?(?!b)(*ACCEPT))|b+(?(?!c)(*ACCEPT))|c+(?(?!d)(*ACCEPT))|d+(?(?!e)(*ACCEPT))|e+(?(?!f)(*ACCEPT))|f+(?(?!g)(*ACCEPT))|g+(?(?!h)(*ACCEPT))|h+(?(?!i)(*ACCEPT))|i+(?(?!j)(*ACCEPT))|j+(?(?!k)(*ACCEPT))|k+(?(?!l)(*ACCEPT))|l+(?(?!m)(*ACCE

Google bigquery python client library SQL select regex error

Python

Lines of Code : 9

License : Strong Copyleft (CC BY-SA 4.0)

Copy

"""
SELECT
  REGEXP_EXTRACT(REGEXP_REPLACE(content, r'.*(\\n)', ''),
                 r'pd\.([^”,\.\(\,\`) ’:\[\]\/\\={}]*)')
FROM
  [fh-bigquery:github_extracts.contents_py]
LIMIT 10
"""

Community Discussions

Trending Discussions on re2

How to Keep rows of multi-line cells containing a keyword in google sheets

Cannot seem to regexp extract a word on URL (Data Studio)

Any substitution for the negative lookahead in regular expression?

How to capture subdomain in nginx ingress

GLMER model produces different values for fitted.values() and predict() on same data

Trying to convert plural words to singular words using regex but want to ignore a few words

Regex using re2

Extract following word after match word in Kusto

Software Foundations: weak_pumping lemma proof

EC2 GRPC install hangs after 12 hours still no install

QUESTION

How to Keep rows of multi-line cells containing a keyword in google sheets

Asked 2022-Apr-04 at 15:23

I'm trying to keep lines that contain the word "NOA" in a column A which has many multi-line cells as can be viewed in this Google Spreadsheet.

If "NOA" is present then, I would like to keep the line. The input and output should look like the image which I have "working" with too-many helper cells. Can this be combined into a single formula?

Theoretical Approaches: I have been thinking about three approaches to solve this:

ARRAYFORMULA(REGEXREPLACE - couldn't get it to work
JOIN(FILTER(REGEXMATCH(TRANSPOSE - showing promise as it works in multiple steps
Using the QUERY Function - unfamiliar w/ function but wondering if this function has a fast solution

Practical attempts:

FIRST APPROACH: first I attempted using REGEXEXTRACT to extract out everything that did not have NOA in it, the Regex worked in demo but didn't work properly in sheets. I thought this might be a concise way to get the value, perhaps if my REGEX skill was better?

...

ANSWER

Answered 2022-Apr-04 at 15:23

Here's one way you can do that:

Source https://stackoverflow.com/questions/71738288

QUESTION

Cannot seem to regexp extract a word on URL (Data Studio)

Asked 2022-Mar-16 at 19:41

I read from somewhere that Datastudio use little bit different Regular Expression from other places: that it uses RE2. I, however, manage to find a site to test for RE2 regex and able to get it running, but it was not working on Data studio.

I have this URL I wanted to extract:

...

ANSWER

Answered 2022-Mar-16 at 19:41

You can use several solutions here.

Solution 1: matching digits after a specific string (here, news-)

Source https://stackoverflow.com/questions/71498945

QUESTION

Any substitution for the negative lookahead in regular expression?

Asked 2022-Mar-08 at 13:48

I'm using regular expression to extract some country data in BigQuery. And I don't know how to extract the text I want from it. This is the example records I use.

country China Anhui Univ Chinese Med, Affiliated Hosp 1, Expt Ctr Clin Res, Sci Res Dept, 117 Meishan Rd, Hefei 230031, Anhui, 12, Peoples R China Meluna Res, Geldermalsen, Netherlands; [Wiegant, Frederik Anton Clemens] Univ Utrecht, Utrecht, Netherlands

I wanted to extract the last comma-followed words Peoples R China, Netherlands from the text, so I used the negative lookahead to extract them.

...

ANSWER

Answered 2022-Mar-08 at 13:47

You can use

Source https://stackoverflow.com/questions/71396046

QUESTION

How to capture subdomain in nginx ingress

Asked 2022-Feb-13 at 05:02

I want to capture subdomain and rewrite URL with /subdomain, For example bhautik.bhau.tk rewrite to bhau.tk/bhautik.

I also https://github.com/google/re2/wiki/Syntax tried group syntax

Here is my nginx ingress config:

...

ANSWER

Answered 2022-Feb-12 at 14:19

I believe you want a redirect instead of rewrite. Here is the server-snippet you need:

Source https://stackoverflow.com/questions/71089917

QUESTION

GLMER model produces different values for fitted.values() and predict() on same data

Asked 2022-Jan-29 at 19:22

I've trained a pretty complex (random intercept and slope) mixed logistic model which I'm then using to predict new data. My predictions were way off so I compared the predicted values for my original data and noticed that they are very different from my fitted.values(). E.g. taking just the first data point, the fitted value is 0.359, the predicted value (predict(model, newdata=data, type="response") is 0.0585. I'm pretty sure the issue relates to the random effects, because if I predict the same data point with only fixed effects I get 0.707, which is what I'd expect, and random effects only gives 0.0252 which is very wrong.

You can see the different random effect groups by plotting fitted vs predicted (below) This also shows how the gradients within groups are the same so it looks like a problem with the intercepts rather than the slopes.

Any help would be really appreciated!

EDIT: In case it helps, the formula basically looks like this:

...

ANSWER

Answered 2022-Jan-29 at 19:22

The model:

Source https://stackoverflow.com/questions/70864410

QUESTION

Trying to convert plural words to singular words using regex but want to ignore a few words

Asked 2022-Jan-08 at 21:43

I am currently trying to replace some of the plural words like removing "s" from "birds" and replacing it as "bird" in bigquery

but I want them to ignore a few words like "less", "james", "this".

I was able to come up with this which ignores the "less" but still butchers james.

...

ANSWER

Answered 2022-Jan-08 at 21:43

You can use an alternation here, a regex with two alternatives. In the first alternative, you can capture all the words that are exceptions, into Group 1, and in the second one, use your regex. The replacement will be both group values concatenated:

Source https://stackoverflow.com/questions/70628801

QUESTION

Regex using re2

Asked 2022-Jan-06 at 20:54

I am using re2 (https://github.com/google/re2/wiki/Syntax). I have a string of the form:

...

ANSWER

Answered 2022-Jan-06 at 20:42

Your regexp will work except if the quote is at the end of the string, because [^"] won't match there. So use an alternative to match the end there.

Source https://stackoverflow.com/questions/70613339

QUESTION

Extract following word after match word in Kusto

Asked 2021-Dec-30 at 16:24

Kusto uses the re2 library: https://github.com/google/re2/wiki/Syntax, as mentioned here: https://docs.microsoft.com/en-us/azure/kusto/query/re2 so apparently lookarounds is not supported.

Sample String:Some sentence. Some word Some word ServiceInstanceId:78d61d2f-6df9-4ba4-a192-0713d3cd8a82.1234 not found. , ErrorCode:2 Some sentences. Some sentences.Some sentences.

Is it possible to extract 78d61d2f-6df9-4ba4-a192-0713d3cd8a82 from the above string in Kusto. Need all characters after "ServiceInstanceId:" until next space.

...

ANSWER

Answered 2021-Dec-30 at 13:57

You can use parse:

Source https://stackoverflow.com/questions/70530439

QUESTION

Software Foundations: weak_pumping lemma proof

Asked 2021-Dec-24 at 17:23

Continuing my work on Software Foundations, I've reached the weak_pumping lemma. I managed to get through almost everything, but I can't find a solution for MStarApp case.

Here's the Lemma:

...

ANSWER

Answered 2021-Oct-11 at 15:11

Try to destruct s1 and look again on lemma napp_star in one of cases.

Source https://stackoverflow.com/questions/69515896

QUESTION

EC2 GRPC install hangs after 12 hours still no install

Asked 2021-Dec-01 at 19:04

I'm pretty sure it's because I am using t2.nano and not something a little more beefy.

But I have used laravel forge to provision an ec2 server, I can't deploy my application however because I need to install GRPC.

I have followed these instructions: https://cloud.google.com/php/grpc#using-pecl

And when I run: sudo pecl install grpc it runs for around 10 mins and then just gets stuck.

Seems to be running the same thing over and over again, can't quite workout the full stack trace or more importantly where it begins, but I'll post below.

...

ANSWER

Answered 2021-Dec-01 at 19:04

Upgrade to a bigger tier than the t2.nano and it should work. I think it's because of the RAM limit. I had the same issue with some instances in Digital Ocean.

Source https://stackoverflow.com/questions/69988900

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install re2

You can download it from GitHub.

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For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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