file_writer: File Writer
In curl: A Modern and Flexible Web Client for R

Description Usage Arguments Details Value Examples

Generates a closure that writes binary (raw) data to a file.

1	file_writer(path)

path

file name or path on disk

The writer function automatically opens the file on the first write and closes when it goes out of scope, or explicitly by setting close = TRUE. This can be used for the data callback in multi_add() or curl_fetch_multi().

Function with signature writer(data = raw(), close = FALSE)

# Doesn't open yet
tmp <- tempfile()
writer <- file_writer(tmp)

# Now it opens
writer(charToRaw("Hello!\n"))
writer(charToRaw("How are you?\n"))

# Close it!
writer(charToRaw("All done!\n"), close = TRUE)

# Check it worked
readLines(tmp)