voxelcore/doc/en/scripting/filesystem.md

Filesystem and serialization

file library

See file library

json library

The library contains functions for serializing and deserializing tables:

json.tostring(object: table, human_readable: bool=false) -> str

Serializes an object into a JSON string. If the second parameter is true, multi-line human-readable formatting will be used, rather than the compact format used by default.

json.parse(code: str) -> table

Parses a JSON string into a table.

toml library

The library contains functions for serializing and deserializing tables:

toml.tostring(object: table) -> str

Serializes an object into a TOML string.

toml.parse(code: str) -> table

Parses a TOML string into a table.

yaml library

The library contains functions for serializing and deserializing tables:

yaml.tostring(object: table) -> str

Serializes an object into a YAML string.

yaml.parse(code: str) -> table

Parses a YAML string into a table.

XML Library

The library contains functions for serializing and deserializing XML:

Further, XML as a data type denotes a Lua table with the following structure:

• Element tag is accessible by the key #
• XML ​​attributes are accessible as key = value pairs
• Inner elements are accessible by index

The table is used both as a dictionary and an array.

Example:

<panel size='400' color='0' interval='1' context='menu'>
    <button onclick='menu.page="worlds"'>@Worlds</button>
</panel>

Equivalent Lua table:

{
    ['#'] = "panel",
    size = "400",
    color = "0",
    interval = "1",
    context = "menu",
    {
        ['#'] = "button",
        onclick = 'menu.page="worlds"',
        {
            "@Worlds"
        }
    }
}

Consequently, the button element is accessible as panel_element[1].

-- Serializes a tree in XML format
-- multiline - use multiline formatting
xml.tostring(data: XML, multiline: bool = true) -> str

-- Parses XML
xml.parse(code: str) -> XML

-- Parses the VCD (VoxelCore Declaration) format used by the VCM format.
-- root_tag - root element tag (the format does not require an explicit root)
xml.parse(code: str, root_tag: str = "root") -> XML

bjson library

The library contains functions for working with the binary data exchange format vcbjson.

-- Encodes a table into a byte array
bjson.tobytes(
    -- encoded table
    value: table,
    -- compression
    [optional] compression: bool=true
) --> Bytearray

-- Decodes a byte array into a table
bjson.frombytes(bytes: table | Bytearray) --> table

Storing data in a world

When saving pack data in the world, you should use the function:

pack.data_file(packid: str, filename: str) -> str

Returns data file path like: world:data/packid/filename and creates missing directories.

If paths other than data/{packid}/... are used, data may be lost.