Cache file read failure

[ZeltaDred]

Program fails to read/load complete cache file..

Environment is Ubuntu 16.04 VM ( virtualbox ) with QT 5.7 ( opensource )
Cache file attached..
qdirstat.cache.gz

File generated by pointing at root (/) mount point while running as non-root user.
Treemap builds and displays, Cache file save seems to write "correct" information.

When attempting to read the cache file, the first (/) directory and the 2 file links are the only things processed / displayed..

Log file is full of the "cannot find parent" messages referenced in the other cache file issue reported

qdirstat-1000.log.tar.gz

[shundhammer]

I can reproduce the problem with the attached cache file.

Thanks for reporting this! Will investigate.

[shundhammer]

Looks like that old parser was a bit too simplistic for some fringe cases. This should be fixed now. There is some performance impact, though: Unlike previously, we now have a regexp search & replace for each cache line to avoid double slashes (which QUrl doesn't seem to handle well).

[ZeltaDred]

Looks like the regexp replace is overstepping its intent..

screen view prior to cache save...

after cache file read...

the cache file was generated the same way as originally reported

[shundhammer]

I was unsure about this for a while, but I can now reproduce it.

This is unrelated to this original issue, though: This is a problem in the internal cache writer class. When I generate the cache file with the supplied qdirstat-cache-writer script, I get the exact same result (7.8 GB total) for my root file system no matter if qdirstat reads it directly from disk or if it reads the cache file.

When I generate that cache file with the "File" -> "Write Cache File" menu actions, though, the resulting cache file contains only 457 MB worth of files.

I will clone this into a separate issue to keep track of this.

[shundhammer]

Cloned issue: #23