toml-edit.lua

Edit toml files while preserving whitespace and formatting from Lua.

Usage

The parse function creates a table with metatable, which can be converted back to toml (preserving comments) using tostring:

local toml_content = [[
[rocks]
# Some comment
"toml-edit" = "1.0.0"
]]
local toml_edit = require("toml_edit")
local toml_tbl = toml_edit.parse(toml_content)
toml_tbl.rocks["toml-edit"] = "2.0.0"
print(tostring(toml_tbl))
-- outputs:
-- [rocks]
-- # Some comment
-- "toml-edit" = "2.0.0"

The parse_as_tbl function parses toml as a regular lua table:

local toml_content = [[
[rocks]
"toml-edit" = "1.0.0"
]]
local toml_edit = require("toml_edit")
local lua_tbl = toml_edit.parse_as_tbl(toml_content)
print(tostring(toml_tbl))
-- outputs: table: 0x7ff975807668

Tip

• Use parse when you need to modify the toml, and you are accessing or setting fields by name.
• Use parse_as_tbl when you need to perform operations that don't access fields by name (e.g. iterating over key/value pairs).

Development

To run tests:

Using Nix:

nix flake check -L

Using luarocks:

mkdir luarocks
luarocks make --tree=luarocks
luarocks test

Note

You may need to luarocks install --local luarocks-build-rust-mlua.