git_download_file: Download a blob for a remote git repository

In pkgdepends: Package Dependency Resolution and Downloads

Download a blob for a remote git repository

Description

Download a blob for a remote git repository

Usage

git_download_file(url, sha, output = sha)

Arguments

url	Repository URL, e.g. ⁠https://github.com/r-lib/pak.git⁠. It might include authentication information, e.g. a GitHub token.
sha	SHA hash of the blob.
output	Path where the blob will be written. It's directory is created if it does not exist.

Value

A list that corresponds to a git packfile entry, invisibly. It has entries: type (always "blob"), object (raw object, the blob itself), size, packed_size, hash.

Examples

Download a DESCRIPTION file from GitHub:

pak_repo <- "https://github.com/r-lib/pak.git"
fls <- git_list_files(pak_repo, "HEAD")
git_download_file(
  pak_repo,
  fls$files$hash[fls$files$path == "DESCRIPTION"],
  output = tmp <- tempfile()
)
readLines(tmp)[1:5]
#> [1] "Package: pak"                                                                  
#> [2] "Version: 0.3.1.9999"                                                           
#> [3] "Title: Another Approach to Package Installation"                               
#> [4] "Description: The goal of 'pak' is to make package installation faster and"     
#> [5] "    more reliable. In particular, it performs all HTTP operations in parallel,"

pkgdepends documentation built on Nov. 10, 2023, 5:06 p.m.