Powershell – Copyright header generator script

Recently i have been doing pair programming with my colleague Andre and thanks to him, i learned powershell programming. Most of the code files in the project need some kind of copyright information at the top. One way to add these headers is by using code formatting tools like stylecop or resharper. But with my newly acquired skills i believe its better to write a small script to append the header on all code files using powershell.

Problem: (Add copyright information to all the files with a given extension found in the target and its subdirectories.)

• Read all the files from target directory and its subdirectories with given extension.
• Append header text at the beginning of the file with copyright information.

Solution:

param($target = "c:\\tmp", $companyname = "Lab49")
$header = "//-----------------------------------------------------------------------
// <copyright file=""{0}"" company=""{1}"">
//     Copyright (c) {1}. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------`r`n"
function Write-Header ($file) {
    $content = Get-Content $file
    $filename = Split-Path -Leaf $file
    $fileheader = $header -f $filename,$companyname
    Set-Content $file $fileheader
    Add-Content $file $content
}
Get-ChildItem $target -Recurse | ? { $_.Extension -like ".txt" } | % {
    Write-Header $_.PSPath.Split(":",3)[2]
}

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