Visual FoxPro Lines of Code Analysis

Introduction

Being a long-time Visual FoxPro turned .NET developer, I am now faced with the task of porting several existing applications from VFP to .NET - and providing customers with estimates of effort for each project as well.

Since I could not find a Source Lines of Code (SLOC) tool for VFP projects, I decided to build one. This article is the result of my work and I hope someone else will find this tool useful in their work.

Using the Application

The VFPLOCCounter application is very easy to use - simply select the VFP *.pjx file you wish to analyze and then click the Process button.

The application will analyze code found in Forms (*.scx), Menus (*.mnx), Class Libraries (*.vcx), Programs (*.prg), Includes (*.h), and Reports (*.frx).

For each file, the application generates the following metrics:

Total number of lines of source
Number of methods
Number of lines of Code
Number of Comment lines
Number of Blank lines
Percentage of Code lines
Percentage of Comment lines
Percentage of Blank lines

Note the Percentage calculations are all based on the total lines in the file or project, for example, the Percentage of Code lines is calculated as follows:

fileCodePercent = (fileCodeLines / fileTotalLines) * 100;

After all files in the project have been analyzed, the application generates the above metrics for the project as a whole.

When the analysis is completed, you can produce a printable report by clicking the Print Preview button which is positioned to the right of the Process button.

Points of Interest

The report that the application generates is built using Microsoft Reporting and was for me an interesting excursion into this way of building reports.

Enjoy!

History

29^th May, 2007: Initial post
31^st August, 2011: Updated project to Visual Studio 2010, search "supexpr" field for code in report files
30th December, 2011: Updated project, corrected bug that did not correctly account for lines containing a single character (such as a ? or a single tab). Also corrected bug that prevented Include files (.h) from being examined. Also correctly count comment lines that begin with "&&" as comment lines and not code lines. Starting a comment line with "&&" is considered bad form in VFP, but is allowed nonetheless.