pacs (version 0.6.0)

pac_timemachine: Package metadata for all releases

Description

Using CRAN website to get a package metadata used at a specific Date or a Date interval or for specific version.

Usage

pac_timemachine(
  pac,
  at = NULL,
  from = NULL,
  to = NULL,
  version = NULL,
  source = c("cran", "crandb")
)

Value

data.frame with 7 columns

Package

character package name.

Version

character package version.

Released

character release Date

Archived

character archived Date.

LifeDuration

difftime number of days the version was the newest one.

URL

character the suffix of the base URL to tar.gz file. The base part of URL in the result is https://cran.r-project.org/src/contrib/.

Size

character size of the tar.gz file.

Arguments

pac

character a package name.

at

Date from which to take the version. Default: NULL

from

Date the lower limit. Default: NULL

to

Date the upper limit. Default: NULL

version

character version of a package. Default: NULL

source

character one of c("cran", "crandb"). Using the MEATCRAN CRANDB or the direct web page download from CRAN. When "crandb" is set then options(pacs.crandb_ntry = 3) and options(pacs.crandb_nsleep = 0.001) can be used to control the fetch. "pacs.crandb_ntry" can be used to set the maximum number of try outs, by default 3. "pacs.crandb_nsleep" can be used to set the sleep duration between fetch try outs, by default 0.001. Default: "cran"

Examples

if (FALSE) {
pacs::pac_timemachine("dplyr")
pacs::pac_timemachine("dplyr", at = as.Date("2017-02-02"))
pacs::pac_timemachine("dplyr", from = as.Date("2017-02-02"), to = as.Date("2018-04-02"))
pacs::pac_timemachine("dplyr", at = Sys.Date())
pacs::pac_timemachine("tidyr", from = as.Date("2020-06-01"), to = Sys.Date())
}