Store files in a local cache

Source: R/store.R

Resources at a specified URL will be downloaded and copied into the local content-based storage. Local paths will simply be copied into local storage. Identical content is not duplicated.

store(x, dir = content_dir(), algos = default_algos())

Arguments

x

a URL, connection, or file path.
dir

the path we should use for permanent / on-disk storage of the registry. An appropriate default will be selected (also configurable using the environmental variable CONTENTID_HOME), if not specified.
algos

Which algorithms should we compute contentid for? Default "sha256", see details.

Value

the content-based identifier

See also

retrieve

Examples

if (FALSE) { # interactive()
 ## Real users won't use a temporary dir
Sys.setenv("CONTENTID_HOME" = tempdir())

# Store & retrieve local file
vostok_co2 <- system.file("extdata", "vostok.icecore.co2",
                          package = "contentid")
 id <- store(vostok_co2)
 retrieve(id)

 ## Real users won't use a temporary dir
Sys.unsetenv("CONTENTID_HOME")

}