git2r (version 0.33.0)

[.git_tree: Extract object from tree

Description

Lookup a tree entry by its position in the tree

Usage

# S3 method for git_tree
[(x, i)

Value

Git object

Arguments

x

The tree object

i

The index (integer or logical) of the tree object to extract. If negative values, all elements except those indicated are selected. A character vector to match against the names of objects to extract.

Examples

if (FALSE) {
##' Initialize a temporary repository
path <- tempfile(pattern="git2r-")
dir.create(path)
dir.create(file.path(path, "subfolder"))
repo <- init(path)

##' Create a user
config(repo, user.name = "Alice", user.email = "[e-mail]")

##' Create three files and commit
writeLines("First file",  file.path(path, "example-1.txt"))
writeLines("Second file", file.path(path, "subfolder/example-2.txt"))
writeLines("Third file",  file.path(path, "example-3.txt"))
add(repo, c("example-1.txt", "subfolder/example-2.txt", "example-3.txt"))
new_commit <- commit(repo, "Commit message")

##' Pick a tree in the repository
tree_object <- tree(new_commit)

##' Display tree
tree_object

##' Select item by name
tree_object["example-1.txt"]

##' Select first item in tree
tree_object[1]

##' Select first three items in tree
tree_object[1:3]

##' Select all blobs in tree
tree_object[vapply(as(tree_object, 'list'), is_blob, logical(1))]
}