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Get Local & Remote Resources Last-Modified Timestamp

Source: R/utils_remote.R
remote_last_modified.Rd

These functions derive timestamps for local and remote resources.

  • remote_last_modified(): Parses the Last-Modified HTTP response header as the timestamp. Returns NA if the header is not available.

  • local_last_modified(): Local file last modified timestamp.

Usage

remote_last_modified(url)

local_last_modified(path)

Arguments

url

Character string specifying the URL of the remote file.

path

Path to local file to get the last modified timestamp for.

Value

  • remote_last_modified(): POSIXct datetime representing the Last-Modified header timestamp, or NA if not provided by the server.

  • local_last_modified(): POSIXct datetime of the file's last modification.

Examples

if (FALSE) { # \dontrun{
url <- "https://www2.census.gov/geo/tiger/GENZ2024/shp/cb_2024_us_state_20m.zip"
remote_last_modified(url)

path <- "data-raw/cache/tiger/GENZ2024/shp/cb_2024_us_state_20m.zip"
local_last_modified(path)
} # }