Software for organising, sorting, and viewing digital documents. Born out of frustration using Calibre—wanting something more like Foobar 2000 and other music library organisers+players.

• PDFs (etc.) don't get moved to a a special folder, just leave them wherever you want / organise them however you want.
• Be able to 'watch' the user's directory for changes, and update without prompting
• Metadata shares Calibre's format (see the metadata.opf files, which are XML).
• Super-customisable layout.
• Fetch metadata online.
• Custom filters: regex with a nice GUI interface if needed.
• Use something zippy like MuPDF for rendering docs. That could be modular.
• Python or FreePascal, I guess.
• Rely on existing system, so use 'outside' programs for things like pdf reading/rendering
• config file for settings is fine.
  • library directory (i don't need multiple, but might be useful)
  • pdf viewer location, if want one not default (xdg-open)
  • ExifTool location
  • location for 'collections'
• 'panels'
  • file browser (or maybe not)
  • collections (like playlists, store as separate plaintext lists of files)
  • keywords (tags)
  • author
  • subject
• OBSPDFC Official Blueberry Soft PDF Catalogue ??

(Just have this urge to do things in FreePascal, but Python seems way easier)

• Reading a file in FreePascal Info on reading config files and parsing launch arguments.
• https://www.freepascal.org/docs-html/rtl/system/read.html - reading from files and stdin
• https://www.freepascal.org/docs-html/rtl/sysutils/getappconfigdir.html
• https://www.freepascal.org/docs-html/rtl/sysutils/getappconfigfile.html
  • https://forum.lazarus.freepascal.org/index.php?topic=42612.0
• https://wiki.freepascal.org/Using_INI_Files
• https://www.freepascal.org/docs-html/rtl/classes/tstringlist.html
• https://wiki.freepascal.org/File_Handling_In_Pascal
• https://wiki.freepascal.org/File
• https://lazarus-ccr.sourceforge.io/docs/fcl/process/tprocess.html
• https://wiki.lazarus.freepascal.org/Executing_External_Programs
  • https://wiki.lazarus.freepascal.org/Executing_External_Programs#LCLIntf_Alternatives - `OpenDocument` uses the default external program
• https://wiki.lazarus.freepascal.org/Add_Help_to_Your_Application

• page-generator - WYSIWYG GUI tool for Python.
• https://github.com/srstevenson/xdg
• https://docs.python.org/2/tutorial/inputoutput.html#reading-and-writing-files
• https://tutswiki.com/read-write-config-files-in-python/
• https://stackoverflow.com/questions/7567642/where-to-put-a-configuration-file-in-python
• https://stackoverflow.com/questions/5055042/whats-the-best-practice-using-a-settings-file-in-python
• https://stackoverflow.com/questions/19379120/how-to-read-a-config-file-using-python
• https://docs.python.org/3/library/configparser.html
• https://www.tutorialspoint.com/python/os_listdir.htm
• https://stackabuse.com/python-list-files-in-a-directory/
• https://www.youtube.com/watch?v=UmPe07a3bWs
• https://github.com/smarnach/pyexiftool
• https://www.easymetadata.com/2014/11/fun-with-python-extracting-pdf-metadata/
• https://stackoverflow.com/questions/14209214/reading-the-pdf-properties-metadata-in-python

• https://github.com/arrufat/pdftag
• https://github.com/glutanimate/PDFMtEd
• https://www.jabref.org/

• https://helpx.adobe.com/acrobat/using/pdf-properties-metadata.html