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Return directory listing as a data frame from the local drive, Google Drive, or SFTP site

Source: R/get_dir.R
get_dir.Rd

A sister function to get_file

Usage

get_dir(path, sourcedrive = "local", sftp)

Arguments

path

directory path (must end with '/' on Google Drive)

sourcedrive

one of local, google, or sftp

sftp

list of url = address of site, user = credentials (optional)

Details

Returns data frame with name (filenames), and id (Google Drive id, only if sourcedrive = google`)

  • when sourcedrive = local name is full path to local files

  • when sourcedrive = google, name is just the base name

  • when sourcedrive = sftp, name is the full path to files on the SFTP site

  • When directories aren't found, throw an error

Notes:

  • paths for Google Drive are case-sensitive

  • initial runs with Google Drive in a session open the browser for authentication or wait for input from the console, so don't run blindly when using the Google Drive

  • SFTP directory info is crazy. Apparently the format is highly platform-dependent. The targeted use for this is running on Unity / fetching files from SFTP on the NAS that we don't have yet, so I'll have to revisit this to tailor it to the specific platforms.

  • When testing this on my laptop / fetching files via SFTP from the Landscape Ecology cluster, I found two date issues:

    1. Seconds are truncated. I'm adding one minute so date checks won't fail. It seems safe to assume source files won't be updated within a minute of downloading them.

    2. Strangely, summer dates are reported differently by xplorer2 and DOS/Command Prompt (1:12 pm) vs. Win Explorer, FileZilla, and this code (2:12 pm). Absolutely crazy. In the final setup, we'll have Linux servers on both sides so hopefully this'll clear up.