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to_toml() can be used to build Cargo.toml. The cargo manifest can be represented in terms of R objects, allowing limited validation and syntax verification. This function converts manifests written using R objects into toml representation, applying basic formatting, which is ideal for generating cargo manifests at runtime.

Usage

to_toml(..., .str_as_literal = TRUE, .format_int = "%d", .format_dbl = "%g")

Arguments

...

A list from which toml is constructed. Supports nesting and tidy evaluation.

.str_as_literal

Logical indicating whether to treat strings as literal (single quotes no escapes) or basic (escaping some sequences) ones. Default is TRUE.

.format_int, .format_dbl

Character scalar describing number formatting. Compatible with sprintf.

Value

A character vector, each element corresponds to one line of the resulting output.

Examples

# Produces [workspace] with no children
to_toml(workspace = )
#> [workspace]

to_toml(patch.crates_io = list(`extendr-api` = list(git = "git-ref")))
#> [patch.crates_io]
#> extendr-api = { git = 'git-ref' }

# Single-element arrays are distinguished from scalars
# using explicitly set `dim`
to_toml(lib = list(`crate-type` = array("cdylib", 1)))
#> [lib]
#> crate-type = [ 'cdylib' ]