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List Available Git2rdata Files Containing Data

Source: R/list_data.R
list_data.Rd

The function returns the names of all valid git2rdata objects. This implies .tsv files with a matching valid metadata file (.yml). Invalid metadata files result in a warning. The function ignores valid metadata files without matching raw data (.tsv).

Usage

list_data(root = ".", path = ".", recursive = TRUE)

Arguments

root

the root of the repository. Either a path or a git-repository

path

relative path from the root. Defaults to the root

recursive

logical. Should the listing recurse into directories?

Value

A character vector of git2rdata object names, including their relative path.

See also

Other storage: display_metadata(), prune_meta(), read_vc(), relabel(), rename_variable(), rm_data(), update_metadata(), verify_vc(), write_vc()

Examples

## on file system

# create a directory
root <- tempfile("git2rdata-")
dir.create(root)

# store a dataframe as git2rdata object. Capture the result to minimise
# screen output
junk <- write_vc(iris[1:6, ], "iris", root, sorting = "Sepal.Length")
# write a standard tab separate file (non git2rdata object)
write.table(iris, file = file.path(root, "standard.tsv"), sep = "\t")
# write a YAML file
yml <- list(
  authors = list(
   "Research Institute for Nature and Forest" = list(
       href = "https://www.inbo.be/en")))
yaml::write_yaml(yml, file = file.path(root, "_pkgdown.yml"))

# list the git2rdata objects
list_data(root)
#> [1] "iris.tsv"
# list the files
list.files(root, recursive = TRUE)
#> [1] "_pkgdown.yml" "iris.tsv"     "iris.yml"     "standard.tsv"

# remove all .tsv files from valid git2rdata objects
rm_data(root, path = ".")
# check the removal of the .tsv file
list.files(root, recursive = TRUE)
#> [1] "_pkgdown.yml" "iris.yml"     "standard.tsv"
list_data(root)
#> character(0)

# remove dangling git2rdata metadata files
prune_meta(root, path = ".")
#> Warning: Invalid metadata files found. See ?is_git2rmeta():
#> _pkgdown.yml
# check the removal of the metadata
list.files(root, recursive = TRUE)
#> [1] "_pkgdown.yml" "standard.tsv"
list_data(root)
#> character(0)


## on git repo

# initialise a git repo using git2r
repo_path <- tempfile("git2rdata-repo-")
dir.create(repo_path)
repo <- git2r::init(repo_path)
git2r::config(repo, user.name = "Alice", user.email = "alice@example.org")

# store a dataframe
write_vc(iris[1:6, ], "iris", repo, sorting = "Sepal.Length", stage = TRUE)
#> 09d5bfd6a65e682a4ca030c766348180861568c8 
#>                               "iris.tsv" 
#> 0d434e56d22a710c99c5b912e8624d52abd41aaf 
#>                               "iris.yml" 
# check that the dataframe is stored
status(repo)
#> Staged changes:
#> 	New:        iris.tsv
#> 	New:        iris.yml
#> 
list_data(repo)
#> [1] "iris.tsv"

# commit the current version and check the git repo
commit(repo, "add iris data", session = TRUE)
#> [0a7a21d] 2024-12-05: add iris data
status(repo)
#> working directory clean

# remove the data files from the repo
rm_data(repo, path = ".")
# check the removal
list_data(repo)
#> character(0)
status(repo)
#> Unstaged changes:
#> 	Deleted:    iris.tsv
#> 

# remove dangling metadata
prune_meta(repo, path = ".")
# check the removal
list_data(repo)
#> character(0)
status(repo)
#> Unstaged changes:
#> 	Deleted:    iris.tsv
#> 	Deleted:    iris.yml
#>