What is the process of transforming the character \u0421 into the letter "C"?

After making a post query to the server, I received JSON data that had an incorrect symbol: instead of "Correct," it showed up as "\u0421orrect". How can I properly encode this text?

The function parse_json appeared to handle it like "РЎorrect";

Through my investigation, I discovered the following:

$a = "\x{0421}orrect";
$a= encode("utf-8",  $a);

gives me "РЎorrect," and

$a = "\x{0421}orrect";
$a= encode("cp1251",  $a);

returns "Correct"

Therefore, I made the decision to switch from \u to \x for further conversion using cp1251.

\u to \x

I implemented the following:

Encode::Escape::enmode 'unicode-escape', 'perl';
Encode::Escape::demode 'unicode-escape', 'python';       
$content= encode 'unicode-escape', decode 'unicode-escape', $content;

This resulted in \x{0421}orrect.

Subsequently, I attempted:

$content = encode( 'cp1251', $content );

However, there was no change - I still had \x{0421}orrect...

Notably, I observed something intriguing:

$a = "\x{0421}orrect";
$a= encode("cp1251",  $a);

yields "Correct"

BUT

$a = '\x{0421}orrect';
$a= encode("cp1251",  $a);

still displays "\x{0421}orrect".

This discrepancy may hold clues, but I am uncertain about the next steps to take.

Attempts were made to utilize encode and decode, Encode:: from_to, JSON::XS, and utf8, but the issue persists.

Answer №1

You've mentioned the need to escape multiple times, but in this case, you actually want to do the opposite - unescape.

decode_json/from_json will correctly return "Correct" (with a CYRILLIC CAPITAL LETTER ES instead of the regular "C").

use JSON::XS qw( decode_json );

my $json_utf8 = '{"value":"\u0421orrect"}';
my $data = decode_json($json_utf8);

It's important to encode your outputs as well. For instance, if you are working with a Cyrillic-based Windows system and need to create a native file, you could use:

open(my $fh, '>:encoding(cp1251)', $qfn)
   or die("Can't create \"$qfn\": $!\n");

say $fh $data->{value};

If you prefer to hardcode the encoding or are interested in modifying the encoding output for STDOUT and STDERR, you can find more information here.

Answer №2

Sorry if this is already known - but I feel it's important to mention so we are all clear.

  • Character number \x{0421} is described as "CYRILLIC CAPITAL LETTER ES" and looks like: С
  • Character number \x{0043} is described as "LATIN CAPITAL LETTER C" and looks like: C

Depending on the font being used, these two characters may appear the same.

You inquired about "How can I encode this text?" without specifying what you mean or why you want to "encode" it. There is no encoding that will change 'С' (\x{0421}) to 'C' (\x{0043}) - as they belong to different alphabets.

The real question is, what result are you aiming for? Are you trying to validate if the server's response matches "Correct"? If so, it won't work since the server returns "Сorrect". Despite looking similar, they are distinct strings.

It's possible that there's an error in the server code, and it should actually be returning "Correct". In such a scenario where you can't rely on consistent output from the server, one solution could be utilizing a character replacement technique to "normalize" the string before analyzing its contents. For example:

use JSON::XS qw( decode_json );

my $response = <<EOF;
{
    "status": "\u0421orrect"
}
EOF

my $data = decode_json($response);

my $status = $data->{status};
$status =~ tr/\x{0421}/C/;

if($status eq "Correct") {
    say "The status is correct";
}
else {
    say "The status is not correct";
}

This code will function correctly now, and in the future if the server code gets rectified to return "Correct".

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Using getStaticPaths and getStaticProps with moralis query for dynamic data fetching

I've been trying to getStaticPaths and getStaticProps to work, but I feel like I might be overlooking something. I attempted querying inside each of them, which seems redundant, but I'm not sure how else to do it. Can someone provide an example? ...

Updating a component's property in React from a different component

I am completely new to using React, so please be patient with me. Currently, I am working on a webpage that incorporates React components. However, the entire page cannot be built using React; it's not an option for me. What I am trying to achieve i ...

Parsing JSON in React resulted in an undefined object

It's worth mentioning that I am not a React expert and am simply trying my best to learn. If there are any obvious errors, please do point them out. I have been attempting to convert a JSON file into an object so that I can easily parse its contents ...

Dealing with cross-origin error issues when using json.parse in React / MERN development

My data structure functions correctly when I use console.log: console.log(JSON.parse([values.category2]).needed_skills); However, when I pass the output of JSON.parse([values.category2]).needed_skills to a component in my application, the entire system c ...

Filtering JSON data by date range in React JS

I have a dataset with JSON data containing ISO dates, and my goal is to filter out entries based on the "date_created" field falling within a specific date range. The time component should be ignored in this comparison, and the original JSON data should re ...

Step-by-step guide on writing to a JSON file using Node.js

I am currently developing a Facial Recognition web application using React for the frontend and Node.js for the backend. You can find more information about my project here. So far, I have completed the frontend part where users manually add 128-d descript ...

Preparing my JSON data for visualization on a chart

I have successfully retrieved data using this API, but now I need to transform it into a chart within my react project. As a newcomer to JS and React, I am struggling to create a chart with the JSON data. My objective is to display prices by bedrooms over ...

Looking to locate or track duplicate values within a multi-dimensional array?

In a multidimensional array, I am looking to detect and count duplicates. If duplicates are found, an alert should be triggered. Arr =[[2,"sk"],[3,"df"],[7,"uz"],[3,"df"],[7,"gh"]] Suggestions: One way to ...

Switching XML to JSON using React.js

Currently, I am in the process of developing an application with a requirement to retrieve data from a web API that provides XML responses. However, my objective is to obtain this information in JSON format, but unfortunately, the API does not offer suppor ...

Access the contents of objects during the creation process

I am currently in the process of creating a large object that includes API path variables. The challenge I am facing is the need to frequently modify these API paths for application migration purposes. To address this, I had the idea of consolidating base ...

Utilizing React to dynamically load JSON data and render a component

I am currently facing a challenge in rendering a React component that includes data fetched from a JSON using the fetch() method. Although the API call is successful, I am experiencing difficulties in displaying the retrieved data. Below is the code snip ...

What is the most effective way to import a substantial static array in React for utilization in a select field?

The scenario is quite straightforward. I currently have a single array containing over 2500 strings of company names, saved locally in the project as a JSON file within a subdirectory under src. To access this data in my component, I am importing the JSON ...

Avoiding repetition in json array using reactjs with the help of axios

After receiving guidance from @Akrion, I managed to resolve the issue! Check out my comments below our conversation for the solution. I am relatively new to reactJS and axios, but I recently collaborated with a classmate on a project. Now, I find myself s ...

The TextField is currently unable to be edited because of an Uncaught TypeError stating it is not iterable

Currently, I am fetching data from an API and updating TextFields with it for display. My goal is to allow users to edit the data shown in these TextFields, but I keep encountering a Uncaught TypeError: prev.fields is not iterable error whenever I attempt ...

Enhance the editing capabilities of the Json data form

https://i.stack.imgur.com/YZIjb.png My goal is to enhance a form for editing json data by moving beyond the typical <textarea /> tag and making it more user-friendly. Are there any tools available that can help improve the form's usability? Add ...

What are the benefits of adding member functions to the data structures of React.js store?

Using React.js and Typescript, I store plain Javascript objects in the React.js store. These objects are sometimes received from the server without any member functions, but I wish to add functions for better organization. Instead of having to rely on exte ...

What is causing the difficulty in accessing the 'query' feature within the API, and why is the question bank failing to display?

Just wanted to mention that I am still learning about class based components, setState, and other concepts in async JS like axios. Below is a very basic example of what I can currently do. This is App.js: import Questions from './components/Ques ...

Updating subdata in an array using Reactjs handleChange

I am facing an issue with my handleChange function. While I can easily change data in the same directory without any problem, I'm struggling to update sub-data. I would like to find a clean solution for this without having to add extra functions withi ...

What are some methods for singling out a specific table row?

When working on my app, I faced the task of importing a JSON file and displaying its contents in a table with 3 columns. However, there are two main issues that arose: Utilizing array index for the row key is not recommended due to the table also having ...

Uncover the secrets to retrieving JSON data using the React fetch method

I've been struggling to retrieve data from an API using various methods, but without success. I have included my code and the API below in hopes of utilizing this JSON data with the React fetch method. // Fetching Data from API fetchData() { ...