How to Use PowerShell for Analyzing Code: Metrics for Java, Python, JavaScript, and C# Projects

PowerShell for Analyzing Code

In this blog post, learn how to leverage PowerShell commands to analyze your code projects effectively. Whether you’re working with Java, Python, JavaScript, or C#, discover how to count lines of code, methods, classes, packages, interfaces, enums, annotations, comments, API endpoints, libraries, and user interfaces. This guide provides a step-by-step approach to automate code analysis, ensuring high code quality and better project management across different programming languages.

Save the following commands in a file named analyze-project.ps1 in the same directory as your project files.
Java Projects
$lineCount = Get-ChildItem -Recurse -Filter *.java | Get-Content | Measure-Object -Line

$methodCount = Get-ChildItem -Recurse -Filter *.java | Select-String -Pattern '^\s*(public|protected|private|static|\s)*\s*\w+\s+\w+\s*\([^)]*\)\s*\{' | Measure-Object -Line

$classCount = Get-ChildItem -Recurse -Filter *.java | Select-String -Pattern '^\s*(public|protected|private|abstract|final|\s)*\s*class\s+\w+' | Measure-Object -Line

$packageCount = Get-ChildItem -Recurse -Filter *.java | Select-String -Pattern '^\s*package\s+[\w\.]+' | Select-Object -Unique | Measure-Object -Line

$interfaceCount = Get-ChildItem -Recurse -Filter *.java | Select-String -Pattern '^\s*(public|protected|private|abstract|final|\s)*\s*interface\s+\w+' | Measure-Object -Line

$enumCount = Get-ChildItem -Recurse -Filter *.java | Select-String -Pattern '^\s*(public|protected|private|abstract|final|\s)*\s*enum\s+\w+' | Measure-Object -Line

$annotationCount = Get-ChildItem -Recurse -Filter *.java | Select-String -Pattern '^\s*@\w+' | Measure-Object -Line

$commentCount = Get-ChildItem -Recurse -Filter *.java | Select-String -Pattern '^\s*//|^\s*/\*|^\s*\*' | Measure-Object -Line

$apiCount = Get-ChildItem -Recurse -Filter *.java | Select-String -Pattern '^\s*@RequestMapping|^\s*@GetMapping|^\s*@PostMapping|^\s*@PutMapping|^\s*@DeleteMapping' | Measure-Object -Line

$libraryCount = Select-String -Path "pom.xml" -Pattern '<dependency>' | Measure-Object -Line

$userInterfaceCount = Get-ChildItem -Recurse -Filter *.java | Select-String -Pattern 'implements\s+javax\.swing|implements\s+javafx' | Measure-Object -Line

Write-Output "Total lines in project: $($lineCount.Lines)"

Write-Output "Total methods: $($methodCount.Lines)"

Write-Output "Total classes: $($classCount.Lines)"

Write-Output "Total packages: $($packageCount.Lines)"

Write-Output "Total interfaces: $($interfaceCount.Lines)"

Write-Output "Total enums: $($enumCount.Lines)"

Write-Output "Total annotations: $($annotationCount.Lines)"

Write-Output "Total comments: $($commentCount.Lines)"

Write-Output "Total API endpoints: $($apiCount.Lines)"

Write-Output "Total Java libraries: $($libraryCount.Lines)"

Write-Output "Total user interfaces: $($userInterfaceCount.Lines)"

Python Projects
$lineCount = Get-ChildItem -Recurse -Filter *.py | Get-Content | Measure-Object -Line

$functionCount = Get-ChildItem -Recurse -Filter *.py | Select-String -Pattern '^\s*def\s+\w+\s*\(' | Measure-Object -Line

$classCount = Get-ChildItem -Recurse -Filter *.py | Select-String -Pattern '^\s*class\s+\w+' | Measure-Object -Line

$importCount = Get-ChildItem -Recurse -Filter *.py | Select-String -Pattern '^\s*import\s+|\s*from\s+\w+\s+import\s+' | Measure-Object -Line

Write-Output "Total lines in project: $($lineCount.Lines)"

Write-Output "Total functions: $($functionCount.Lines)"

Write-Output "Total classes: $($classCount.Lines)"

Write-Output "Total imports: $($importCount.Lines)"

JavaScript Projects
$lineCount = Get-ChildItem -Recurse -Filter *.js | Get-Content | Measure-Object -Line

$functionCount = Get-ChildItem -Recurse -Filter *.js | Select-String -Pattern '^\s*function\s+\w+\s*\(' | Measure-Object -Line

$classCount = Get-ChildItem -Recurse -Filter *.js | Select-String -Pattern '^\s*class\s+\w+' | Measure-Object -Line

$importCount = Get-ChildItem -Recurse -Filter *.js | Select-String -Pattern '^\s*import\s+' | Measure-Object -Line

Write-Output "Total lines in project: $($lineCount.Lines)"

Write-Output "Total functions: $($functionCount.Lines)"

Write-Output "Total classes: $($classCount.Lines)"

Write-Output "Total imports: $($importCount.Lines)"

C# Projects
$lineCount = Get-ChildItem -Recurse -Filter *.cs | Get-Content | Measure-Object -Line

$methodCount = Get-ChildItem -Recurse -Filter *.cs | Select-String -Pattern '^\s*(public|private|protected|internal|static|\s)*\s*\w+\s+\w+\s*\(' | Measure-Object -Line

$classCount = Get-ChildItem -Recurse -Filter *.cs | Select-String -Pattern '^\s*(public|private|protected|internal|abstract|sealed|\s)*\s*class\s+\w+' | Measure-Object -Line

$namespaceCount = Get-ChildItem -Recurse -Filter *.cs | Select-String -Pattern '^\s*namespace\s+\w+' | Measure-Object -Line

Write-Output "Total lines in project: $($lineCount.Lines)"

Write-Output "Total methods: $($methodCount.Lines)"

Write-Output "Total classes: $($classCount.Lines)"

Write-Output "Total namespaces: $($namespaceCount.Lines)"

Using PowerShell in Your Preferred IDE
You can run the PowerShell script in any IDE that supports PowerShell and the respective programming language. Here are a few popular options:Visual Studio Code: A lightweight, powerful code editor that supports PowerShell through extensions. You can install the PowerShell extension from the Visual Studio Code marketplace.
IntelliJ IDEA: A robust IDE for Java development that also supports running PowerShell scripts.
Eclipse: Another popular Java IDE that can be configured to run PowerShell scripts using external tools.

Running the ScriptVisual Studio Code:

Install the necessary extensions for PowerShell and the programming language.
Open your project directory.
Create and save your PowerShell script (e.g., analyze-project.ps1).
Open the integrated terminal and run the script using .\analyze-project.ps1.

IntelliJ IDEA:

Open your project.
Create and save your PowerShell script.
Use the terminal within IntelliJ IDEA to navigate to your project directory and run the script.

Eclipse:

Open your project.
Create and save your PowerShell script.
Use the external tools configuration to run the script.

Explanation of CommandsTotal lines in project: 

Counts the total number of lines in all source files.
Total methods/functions: Counts the total number of methods or functions in all source files.
Total classes: Counts the total number of classes in all source files.
Total packages/namespaces: Counts the total number of unique packages or namespaces in all source files.
Total interfaces: Counts the total number of interfaces in all source files.
Total enums: Counts the total number of enums in all source files.
Total annotations: Counts the total number of annotations in all source files.
Total comments: Counts the total number of comments in all source files.
Total API endpoints: Counts the total number of API endpoints in all source files.
Total libraries/imports: Counts the total number of dependencies or imports in the project files.
Total user interfaces: Counts the total number of user interfaces implemented using specific libraries.


Conclusion
By using these PowerShell commands, you can automate the process of analyzing your project, making it easier to maintain and improve your codebase. This guide provides a comprehensive approach to gathering important metrics about your project, helping you ensure high code quality and better project management.