User Tools

Site Tools


Sidebar



en:objects:textfile:file_work:delete_line_from_file

delete_line_from_file

delete_line_from_file($file,$line,$timeout=COMMAND_TIME); - delete the specified line in the file, available from version 7.0.4

The function accepts parameters as input:

  • $file – path to the file to delete the line in. It can be either absolute or relative (relative to the script folder).
  • $line – the number of the line to delete in the file (starts with 0)
  • $timeout – the maximum time to perform this operation (in seconds), by default - 60 seconds, if the operation is not completed during this time, the script continues to run further.

    After testing, the function returns the result of its work to the script :
  • true – operation completed (boolean)
  • false – operation failed (boolean)

    PHP example:

    <?php $xhe_host = "127.0.0.1:7016";
     
    //connect the object to control the emulator, if not already connected
    if(!isset($path))
       $path = "../../../Templates/xweb_human_emulator.php";
    require($path);
     
    //Start
    echo "<hr> <font color = blue> textfile->".basename(__FILE__)."</font> <hr>";
     
    //prepare files
    $path = "test \ test_delete.txt";
    $file_os->delete($path);
    $file_os->copy("test \ test_dedupe.txt", $path);
     
    //1
    echo("1.Get the number of lines in the file:");
    echo $textfile->get_lines_count($path)." n";
     
    //2
    echo("2.Remove line from file:");
    echo $textfile->delete_line_from_file($path, 2)." n";
     
    //3
    echo("3.Get the number of lines in the file:");
    echo $textfile->get_lines_count($path)." n";
     
    //end
    echo "<hr> <br>";
     
    //Quit
    $app->quit();
    ?>

    Python example:

    # Additional paths
    import sys
    sys.path.insert(0, '../../../Templates PY/')
     
    xhe_host = "127.0.0.1:7016"
    from xweb_human_emulator import *
     
    # Start
    echo("<hr> <font color = blue> textfile.xxxxxxxxx </font> <hr>")
     
    # prepare files
    path = "test \ test_delete.txt";
    file_os.delete(path);
    file_os.copy("test \ test_dedupe.txt", path);
     
    # 1
    echo("1.Get the number of lines in the file:");
    echo(textfile.get_lines_count(path), "
    ");
     
    # 2
    echo("2.Remove line from file:");
    echo(textfile.delete_line_from_file(path, 2), "
    ");
     
    # 3
    echo("3.Get the number of lines in the file:");
    echo(textfile.get_lines_count(path), "
    ");
     
    # end
    echo("<hr> <br>")
     
    # Quit
    app.quit()

    C# example:

    #region using
     
    using System;
    using System.Diagnostics;
    using System.Collections.Generic;
    using System.Linq;
    using System.IO;
    using System.Text;
    using System.Threading;
     
    using XHE;
    using XHE.XHE_DOM;
    using XHE.XHE_System;
    using XHE.XHE_Window;
    using XHE.XHE_Web;
     
    #endregion
     
     class Program: XHEScript
     {
    static void Main(string [] args)
    {
    //init XHE
    server = "127.0.0.1:7016";
    InitXHE();
     
    //Start
    echo("<hr> <font color = blue> textfile.get_all_external_inner_texts_and_hrefs </font> <hr>");
     
               //prepare files
                string path = "test \ test_delete.txt";
                file_os.delete(path);
                file_os.copy("test \ test_dedupe.txt", path);
     
               //1
                echo("1.Get the number of lines in the file:");
                echo(textfile.get_lines_count(path) + " n");
     
               //2
                echo("2.Remove line from file:");
                echo(textfile.delete_line_from_file(path, 2) + " n");
     
               //3
                echo("3.Get the number of lines in the file:");
                echo(textfile.get_lines_count(path) + " n");
     
    //end
    echo("<hr> <br>");
     
    app.quit();
    }
    }

    Java Script example:

    //connect the object to control the emulator, if not already connected
    xhe_host = "127.0.0.1:7016";
    echo = require("../../../Templates JS/xweb_human_emulator.js");
     
    //Start
    echo("<hr> <font color = blue> textfile.get_line_from_file </font> <hr>");
     
    //prepare files
    var path = "test \ test_delete.txt";
    file_os.delete(path);
    file_os.copy("test \ test_dedupe.txt", path);
     
    //1
    echo("1.Get the number of lines in the file:");
    echo(textfile.get_lines_count(path) + " n");
     
    //2
    echo("2.Remove line from file:");
    echo(textfile.delete_line_from_file(path, 2) + " n");
     
    //3
    echo("3.Get the number of lines in the file:");
    echo(textfile.get_lines_count(path) + " n");
     
    //end
    echo("<hr> <br>");
     
    //Quit
    app.quit();
  • en/objects/textfile/file_work/delete_line_from_file.txt · Last modified: 2026/08/05 22:52 (external edit)