Attached, "sourcecount.py.txt," is the Python 3.0 script to generate the mapping between authors and java source code files.

Attached, "code_contribution.ods," is the OpenOffice 2.0 Calc file to generate the following statistics from the data generated by the above Python script.

To reproduce the following statistics for other versions of Liferay, change the path variable in the Python script to the path to the root directory of Liferay x.y, run the script.

The script generates an output file. Replace the last two characters of each line in the output file with " because there is a non-printable character that I'm not sure how to get rid of.

In order to generate the statistics, first get the list of authors. To get the list of authors, paste the output file's data into Columns A and B for filename and author, respectively. Sort the data in ascending order by column B's data. Then, in column C row 1 type "=IF(B1=B2;1;0)". This will be 1 everywhere except when the author's name changes. Sort the data in ascending order by column C's data. Now Column C can be used to find the unique author names in Column B. Copy and paste the author names across the columns. In the cell below the author's name, type "=IF(D1=B1;1;0)". Then drag the black anchor on the bottom right of the cell to all the way down so as to cover all the rows in the data. Finally, select Coulmn D and press and drag the black anchor on the bottom right of the cell all the way to the right so as to cover all the columns in the data.

Liferay 5.1.2