Ferret File System/v0.1/process

Scanning a Volume

When given a volume to scan, here's what happens:

• For every entry record in that volume:
  • Clear the "didFind" flag. (These get set as entries are found during the scan.)
  • Set the "didSeek" flag. (Indicates entries that existed before this scan.)
• Read the directory at the volume's URL.
• For each item found, do "Each Entry" below. (This maps the volume.)

Each Entry

• Look for a matching entry.
• If entry does not exist, create it.
• Log that the entry was found, and whether it was new or existing.
• If it was an existing entry, log any changes in the specs (timestamps, size).
• If Entry is a File, do "Each File" below.
• If Entry is a Folder, do "Each Folder" below.

Each File

• Check the firev to see if it matches.
  • If not, create a new firev and updates the file's ID_Firev.
  • Log whether the firev has changed or not.

Each Folder

• If folder is new:
  • Check name against text blacklist.
  • If found:
    • Mark it "noScan" when creating.
    • Add a note which includes the matching blacklist line.
• If "noScan" is set:
  • log that it was not scanned ("noScan" is currently the only possible reason for this).
• ...else...
  • do "Each Entry" above for each entry in the folder's directory.