Hide unchanged option does not hide moved unchanged files

[locobastos]

Hello,

Your program is very useful is almost all cases but in some rare cases, where the package are built unconventionally, the diff report is not usable.

Let me explain:

In my company, we are building our software/web services "unconventionally", and we are installing each version in a separate folder:

/opt/my_company/my_product/1.0.0/all_my_files...
/opt/my_company/my_product/1.1.0/all_my_files...
/opt/my_company/my_product/1.2.0/all_my_files...
/opt/my_company/my_product/1.3.0/all_my_files...

Between version 1.2.0 and version 1.3.0, it may have few changes.

When I'm running pkgdiff on both RPM (we are using RPM-based Linux servers), ALL files are reported as moved (yes, it's true) with a Delta = 0%

My RFE is to hide these results when we are using the -hide-unchanged option to keep only files with real delta, even if they are moved.

To reach this point, I've changed this part of code:

https://github.com/lvc/pkgdiff/blob/master/pkgdiff.pl#L2171

2169    if($HideUnchanged)
2170    {
2171        if($Info{"Status"} eq "unchanged")
2172        {  # do not show unchanged files
2173            next;
2174        }
2175    }

to add:

2169    if($HideUnchanged)
2170    {
2171        if($Info{"Status"} eq "unchanged" or show_number($Info{"Rate"}*100) eq 0)
2172        {  # do not show unchanged files
2173            next;
2174        }
2175    }

This let me know which files are modified between two packages ignoring moved file without any modification.

Thank you!

[locobastos]

Let's take a real example with Java JDK which installs multiple versions of the same package at different directory:

• /usr/java/jdk-17.0.1/
• /usr/java/jdk-17.0.2/
• /usr/java/jdk-17.0.3/
• ...

You can download these versions here thanks to the WayBackMachine

• 17.0.1 ==> https://web.archive.org/web/20220101012755/https://www.oracle.com/java/technologies/downloads/
• 17.0.2 ==> https://web.archive.org/web/20220323033115/https://www.oracle.com/java/technologies/downloads/
• 17.0.5 ==> https://web.archive.org/web/20221201030525/https://www.oracle.com/java/technologies/downloads/

With this kind of package, I would like an option to ignore install folder. It means that with this option, files '/usr/java/jdk-17.0.1/conf/logging.properties' and '/usr/java/jdk-17.0.2/conf/logging.properties' should show the same result as if both packages install their files on the same folder.