use_template: Use a usethis-style template

Description Usage Arguments Details Value Examples

Description

Creates a file from data and a template found in a package. Provides control over file name, the addition to .Rbuildignore, and opening the file for inspection.

Usage

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use_template(template, save_as = template, data = list(),
  ignore = FALSE, open = FALSE, package = "usethis")

Arguments

template

Path to template file relative to templates/ directory within package; see details.

save_as

Path of file to create, relative to root of active project. Defaults to template

data

A list of data passed to the template.

ignore

Should the newly created file be added to .Rbuildignore?

open

Open the newly created file for editing? Happens in RStudio, if applicable, or via utils::file.edit() otherwise.

package

Name of the package where the template is found.

Details

This function can be used as the engine for a templating function in other packages. The template argument is used along with the package argument to derive the path to your template file; it will be expected at fs::path_package(package = package, "templates", template). We use fs::path_package() instead of base::system.file() so that path construction works even in a development workflow, e.g., works with devtools::load_all() or pkgload::load_all(). Note this describes the behaviour of fs::path_package() in fs v1.2.7.9001 and higher.

To interpolate your data into the template, supply a list using the data argument. Internally, this function uses whisker::whisker.render() to combine your template file with your data.

Value

A logical vector indicating if file was modified.

Examples

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## Not run: 
  # Note: running this will write `NEWS.md` to your working directory
  use_template(
    template = "NEWS.md",
    data = list(Package = "acme", Version = "1.2.3"),
    package = "usethis"
  )

## End(Not run)

usethis documentation built on July 4, 2019, 5:05 p.m.