zimdump dump misses html files when file name conflict with directory name

[nickhuang99]

Let's use "real" wiki page of "C++" as an example:
"https://en.wikipedia.org/wiki/C++" is a html page and it has some sub pages under the directory "C++":
https://en.wikipedia.org/wiki/C++/CLI
This situation cannot be represented in dump static html files because "C++" cannot be a html file and directory at same time.
How should zimdump generate redirect is not so easy, especially when "C++" is url-escaped as "C%2B%2B". Then redirect URL has to include a safe-URL encoded to check if actual filesystem directory "C++" actually exists.
To give a real test case, please download "kiwix" computer zim from:
https://download.kiwix.org/zim/wikipedia/wikipedia_en_computer_maxi_2024-05.zim

And when you zimdump it, you will see "C++" html page is missing because "C++" is a directory to hold "CLI" page in filesystem.

[nickhuang99]

After submitted, I realized this is a duplicate of old issue #190
Can someone dup it or should I close it? Maybe just another test cases in future?

[nickhuang99]

escapeSlash.diff.zip
I have a simple solution to solve this issue by escaping all '/' in path of filename to allow all article/picture residing in same level of directory to avoiding this directory-filename-conflicts. Even though this may create potential filename longer than 255 issue when directory is too deep. However, my tests show at least for "https://download.kiwix.org/zim/wikipedia/wikipedia_en_computer_maxi_2024-05.zim" we no longer have any single exception.

Attached please find patch. Can developer to take a look to see if it can be patched if ok.
Thank you.