Split text

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I need to take a specific piece of a file . txt that is between <tag> and </tag>.
But I need to get all the lines where it happens.

Example: 

<tag1>titulo</tag1>
<tag2>subtitulo</tag2> 

texto... 

<tag2>subtitulo</tag2> 
texto... 

<tag1>titulo</tag1> 
<tag2>subtitulo</tag2> 
texto...

I want to pick up the text between these tags and save.

javascript node.js regex
  • 1

    You want to take the text between the <tag1> and <tag2> tags, is that it? If it’s no problem to put the application code, it would be easier to help...

  • That’s it! My system needs to do this with this txt.

  • 2

    I don’t understand if you want to capture titulo and subtitulo or what is outside the tags as texto....

  • and why the <tag2> is not closed?

  • I want to take what’s outside the tags.

  • forgot to close.

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1 answer

0


Try this code:

var pattern = /<tag.*?>(.*?)<\/tag.*?>/g; //Padrão que a regex vai dar Match
var reader = new FileReader(); //Leitor do arquivo txt
var output = ""; //Variável de texto onde será carregado o conteúdo do txt
reader.onload = function (e) {  //Função para leitura após o carregamento do reader
            output = e.target.result;
            displayContents(output);
        }; //Fim da função
        reader.readAsText(filePath.files[0]); //insira o path para seu txt
var m;

do {
    m = pattern.exec(output); //executa o padrão da regex e armazena os val em m
    if (m) {
        console.log(m[1]); //mostra o resultado no console do browser
    }
} while (m);

Explanation of the code:

  • The following function loads the txt file through a FileReader

  • Passes your content to the variable output.

  • Print the content that match regex in the browser console.

Explanation of the regex:

/<tag.*?>(.*?)<\/tag.*?>/g;
  • <tag Finds the sequence exactly equal to <tag
  • .*?> Continues (without capturing) by all characters until the first occurrence of >.
  • (.*?)<\/tag Captures all content in capture group 1 until the first occurrence of </tag
  • .*?> Continues (without capturing) by all characters until the first occurrence of >.
  • /g It is a regex modifier, indicates that you should continue trying to match until the end of the text sequence.

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