Question regarding tmp-file

[Lolf1010]

Hey, if i understand it correctly the Inputstream that is given to Parser.createParser is written into a temp-file and the library then reads from that file. Meaning that if i would parse a 1 MB InputStream a 1 MB temp-file would be temporarily exist.

I think the answer is no but just to make sure:

• Is it possible to change the directory of the tmp-file without changing the java-property (java.io.tmpdir) or overwriting the class code?
• Is there an alternative to the tmp-file (excluding small pdf-files which are kept in-memory it appears) ?

Thank you

Update: It appears that the classes are signed which means that its not easily possible to overwrite the InternalInputStream to change the directory. So i guess the only option would be to change the java-property.

[Lolf1010]

Can you maybe make it configurable to define a sub-folder in the tmp-folder ?

[bdoubrov]

Normally small cached data is not written into tmp files and kept in memory. "Small" means < SeekableInputStream.MAX_BUFFER_SIZE. This is a private constant, which we can expose as one of the veraPDF configuration parameters.

Temporary files are always created by standard Java call File.createTempFile(String prefix, String suffix); . Again, we can use another version of this method File.createTempFile(String prefix, String suffix, File directory); and expose directory as yet another config parameter.

Would this work for your purposes?

[Lolf1010]

Thanks for the response. The idea to use a different directory for the tmp-files was discussed at work - which is when i wrote this issue - but since then has been dropped. So the library works for our purposes. Feel free to reopen the issue / create a new one if you want to implement the configuration for the directory anyways ;)