The Space Lua API provides functions for working with Lua expressions and templates.

spacelua.parseExpression(luaExpression)

Parses a lua expression and returns the parsed expression as an AST.

Example:

local parsedExpression = spacelua.parseExpression("1 + 1")

spacelua.evalExpression(parsedExpr, envAugmentation?)

Evaluates a parsed Lua expression and returns the result. Optionally accepts an environment table to augment the global environment.

Example:

local parsedExpr = spacelua.parseExpression("x + y")
local result = spacelua.evalExpression(parsedExpr, {x = 1, y = 2})
print(result)  -- prints: 3

spacelua.interpolate(template, envAugmentation?)

Interpolates a string with lua expressions and returns the result. Expressions are wrapped in ${...} syntax. Optionally accepts an environment table to augment the global environment.

Example:

local greeting = spacelua.interpolate("Hello ${name}!", {name="Pete"})
print(greeting)  -- prints: Hello Pete!

spacelua.baseUrl()

Returns your SilverBullet instance's base URL, or nil when run on the server.

Example:

local url = spacelua.baseUrl()
print(url)  -- prints something like: https://example.com